10 MW Biomass Based Power Plant
ABEIL
G1. INTRODUCTION
Amrit Bio Energy and Industries Ltd (henceforth abbreviated as ABEIL) has been incorporated
as a Public Limited Company on 29th January,2004 . This company was promoted by Shri.
K.C.Dujari, Chairman & Managing Director and Smt. Sudha Dujari, Director. ABEIL is planning
to set up an 11 MW independent biomass based power plant at Jagi Road in Mayong Circle of
Marigaon district in Assam. This will be the first Independent Biomass Based Power Plant at
Assam.
1.1
BACKGROUND AND INTRODUCTION
Biomass is known to be an important energy source for developing countries like India. Its
importance is now being reaffirmed even by developed countries in view of its renewable and
environment friendly character. In our country also, optimum utilization of biomass resources
could not only lead to savings in conventional energy but also result in many indirect benefits.
In view of this, the Ministry of Non Conventional Energy Sources has been promoting
electricity generation from biomass as a means of full exploitation of its inherent energy value.
Among the technologies being promoted for this purpose is the megawatt scale power
generation through combustion using boiler and turbine and gasification, using Gasifier and
producer gas engines. Combustion route is used for independent biomass power plants and
also in cogeneration mode. These projects are covered under the Biomass
Power/Cogeneration Programme of Ministry of Non Conventional energy Sources, Govt. of
India. The Ministry initiated the programme for promotion of these routes of biomass utilization
almost a decade back and significant achievements have been made in this period towards
their commercialization and establishment as a viable and environment friendly electricity
generation option.
1.2
POTENTIAL
The annual generation of biomass materials covering residues from agriculture, forestry, and
plantation operations, is estimated at more than 550 million tons. Biomass is classified into
three categories. Crop residues like Cotton stalks, mustard stalks, etc, agro industry residues
like rice husk, bagasse, etc and from waste lands and forest. Biomass is also categorized into
two functional categories like, suitable for fodder and suitable for power generation. Biomass
suitable for fodder is not considered for power generation, eventhough the biomass is surplus.
It has been estimated that about 70-80% of these wastes are used as fodder, as fuel for
10 MW Biomass Based Power Plant
ABEIL
domestic cooking and for other economic purposes leaving behind 120-150 millions tons of
usable agro residues per year which could be made available for power generation. By using
these surplus agro residues and the wastes from forestry and plantations, it has been
estimated that more than 16,000 MW of grid quality power can be generated. In addition,
around 3,500 MW of power can be produced, if the sugar mills in the country switch over to
modern techniques of optimum co-generation. The States having the maximum potential for
bagasse based cogeneration include Maharashtra, Uttar Pradesh, Tamil Nadu, Karnataka and
Andhra Pradesh, while the States having greater potential for biomass based power
generation include Andhra Pradesh. Tamil Nadu, Karnataka, Chhattisgarh, Bihar, Punjab etc.
1.3
ACHIEVEMENTS
To tap this large potential, the Ministry has been implementing biomass power & bagasse cogeneration programme for the last 10 years. Over these years, 120 projects aggregating to
805 MW have been installed in the country for feeding power to the grid. In addition, it is
estimated that another 91 projects aggregating to 822.43 MW of electricity are under various
stages of implementation. The installed capacity includes 60 projects of bagasse based
cogeneration aggregating to 437 MW and the capacity under implementation includes 42
projects aggregating to 435.43 MW of bagasse cogenerated electricity. 60 Biomass based
power plants are already in operation with installed capacity of 342.5 MW and 49 projects are
under various stages of completion. With the commissioning of pipeline projects, Biomass
Based Power plants will contribute 730 MW, and bagasse based cogeneration projects – 898
MW. This capacity is in addition to the Biomass Gasifier systems, aggregating more than 62
MW. The States which have taken a leadership position in implementation of cogeneration
projects include Andhra Pradesh, Tamil Nadu, Karnataka and Uttar Pradesh, while for
biomass power projects, the leading States are Andhra Pradesh, Karnataka and Tamil Nadu.
Government of India, had announced the power policy, where captive power plants are not
needing any approval. With this policy, number of industries are opting for captive biomass
based power plants.
1.4
MNES POLICY
Ministry of Non Conventional Energy Sources (MNES) Govt. of India is promoting the power
generation from renewable energy sources in general and the Power Group of Ministry is
10 MW Biomass Based Power Plant
ABEIL
specially promoting the Biomass Based Power Plants and Cogeneration power plants. MNES
is giving fiscal and financial benefits to the project developers.
Ministry had announced the fiscal incentives common for all renewable energy projects and
announced category wise financial incentives. These financial incentives are also
modified/revised from time to time.
Fiscal Incentives are:
1. Accelerated depreciation –100% in first year of investment
2. Income tax exemption for 10 Years
3. Sales Tax exemption for plant and machinery
a. Some states had given sales tax exemption for the equipment used in the
renewable energy project. Some states had given additional price per unit is
given from the sales tax revenue to the extent of project cost. And some
states have allowed to off set the Sales tax payment with other products of
industry
4. Excise duty or custom duty exemption
a. Excise duty and custom duty is exempted on the plant and machinery of the
project.
Ministry has also extended the Capital subsidy for Biomass Based Power plants and Bagasse
based cogeneration power plants.
At present, Government of India had announced that rapid depreciation will be upto 80% of
the project cost estimates in the first year, instead of 100% as announced earlier.
Even though notification was generally exempting the excise duty for renewable energy
projects, excise department had not given this concession to biomass based power plants and
bagasse based cogeneration systems, as the boiler and turbine can be used for conventional
systems also. Ministry of Finance, Govt. of India had issued notification no: 33/2005 dated
8.9.2005, clearly indicating that, plant and machinery needed to set up the biomass based
power plants are exempted for excise and custom duty. Copy of the notification is given below:
TO BE PUBLISHED IN PART II, SECTION 3, SUB-SECTION (i) OF THE
GAZETTE OF INDIA, EXTRAORDINARY, DATED THE 8TH SEPTEMBER,
2005
17 BHADRAPADA, 1927 (SAKA)
10 MW Biomass Based Power Plant
ABEIL
GOVERNMENT OF INDIA
MINISTRY OF FINANCE
(DEPARTMENT OF REVENUE)
***
New Delhi, dated the 8th September, 2005
17 Bhadrapada , 1927 (Saka)
NOTIFICATION
No. 33/ 2005-Central Excise
G.S.R.
(E).- In exercise of the powers conferred by sub-section (1) of
section 5A of the Central Excise Act, 1944 (1 of 1944), the Central Government
being satisfied that it is necessary in the public interest so to do, hereby exempts all
items of machinery, including prime movers, instruments, apparatus and appliances,
control gear and transmission equipment and auxiliary equipment (including those
required for testing and quality control) and components, required for initial setting
up of a project for the generation of power using non-conventional materials,
namely, agricultural, forestry, agro-industrial, industrial, municipal and urban waste,
bio waste or poultry litter, falling under any Chapter of the First Schedule to the
Central Excise Tariff Act, 1985(5 of 1986), from the whole of the duty of excise
leviable thereon which is specified in the said First Schedule, subject to the
following conditions,(i) before the clearance of the goods from the factory, the manufacturer produces
to the Deputy Commissioner of Central Excise or the Assistant Commissioner
of Central Excise, as the case may be, a certificate, from an officer not below
the rank of a Deputy Secretary to the Government of India in the Ministry of
Non-Conventional Energy Sources recommending the grant of this exemption
and the said officer certifies that the goods are required for initial setting up
of a project for the generation of power using non-conventional materials,
namely, agricultural, forestry, agro-industrial, industrial, municipal and urban
waste, bio waste or poultry litter; and
(ii) the manufacturer proves to the satisfaction of the Deputy Commissioner of
Central Excise or the Assistant Commissioner of Central Excise, as the case
may be, that there is a valid power purchase agreement between the importer
and the purchaser, for the sale and purchase of electricity generated using
non-conventional materials, for a period of not less than ten years from the
date of commissioning of the project.
[F.No. 460 / 44 /2005-Cus.V]
(Ajay)
Under Secretary to the Government of India
The indications are that, MNES is planning to give capital subsidy instead of interest subsidy.
This amount is paid to the financial institution through IREDA after commissioning of the
power project.
10 MW Biomass Based Power Plant
1.5
ABEIL
STATUS OF BIOMASS BASED POWER PLANTS
Biomass Based power plants are in operation since 1992 in India, whereas these plants are in
operation in the world since mid eighties. In California, biomass based power plants of 50 MW
capacity are also in operation.
Status of Projects Commissioned and under Implementation as on 30.9.2005
PROJECTS
BIOMASS POWER
MW
Commissioned
Nos.
CO-GENERATION
MW
Nos.
TOTAL
MW
Nos
342.5
60
462.53
60
805.03
120
Under Implementation
387.04
49
435.43
42
822.43
91
Total
729.54
109
897.96
102
1627.46
211
State-Wise status of Commissioned & Under Implementation Biomass Power / CoGeneration Projects as on 28/2/2005
S.N.
State
Commissioned
No. of Projects
1
Andhra Pradesh
2
Under Implementation
Capacity
(in MW)
No. of Projects
Capacity
(in MW)
48
257.25
19
135.96
Chhattisgarh
2
11
5
51
3
Gujarat
1
0.50
0
0
4
Haryana
2
6
0
0
5
Karnataka
15
151.98
20
155.66
6
Madhya Pradesh
1
1.00
0
0
7
Maharashtra
9
36.00
8
75.80
8
Punjab
3
22
1
6
9
Rajasthan
1
7.8
4
29.10
10
Tamil Nadu
19
173
9
77.00
11
Uttar Pradesh
10
73.00
8
64.30
Total
Status of Assam
111
739.53
74
594.82
1.5.1
Assam Energy Development Agency is the nodal agency to give the approvals for setting up
Biomass Based Power Plants in the state of Assam. Government of Assam is not yet
10 MW Biomass Based Power Plant
ABEIL
announced the policy of power purchase from Renewable Energy Projects. This project will be
the first independent biomass based power project of Assam.
Assam State Electricity Regulatory Commission while issuing the tariff order for the financial
year 2005-06, had given special emphasis to promote renewable energy projects in the state.
Relevant portion of the order is reproduced below:
11.28 Under section 86 (e) of the Act, the Commission to:
“(e) promote co-generation and generation of electricity from renewable sources of energy by
providing suitable measures for connectivity with the grid and sale of electricity to any person,
and also specify, for purchase of electricity from such sources, a percentage of the total
consumption of electricity in the area of a distribution licence;”
11.29 The Commission has considered this requirement and decided that it is too early to
prescribe any purchase requirements on the Discom who have only been established late last
year.
11.30 The Commission is interested in encouraging renewable energy for stand alone power
systems or for remote villages not connected to the grid where a renewable energy source
may be a more cost effective option to improve the reliability of supply instead augmenting the
existing network.
11.31 ASEB had prepared a policy for small hydro power development up to 25 MW in the
State of Assam and sent the draft policy to Assam Electricity Regulatory Commission for
comment. AERC suggested a number of modifications in the policy.
11.32 To encourage generation of power from renewable sources, the Commission may
consider fixing appropriate tariff for such generation if such a generation system is connected
to grid. Wheeling charges for wheeling the generated energy will also be determined by the
Commission.
11.33 The Commission is also decided in this tariff order to create an incentive for consumers
to switch to solar hot water systems. In Assam, during winter months very high consumption of
10 MW Biomass Based Power Plant
ABEIL
electricity is observed during the morning hours resulting in peaking of demand in morning in
addition to normal peak hours. One of the reason for Assam Electricity Regulatory
Commission Tariff Order FY 2005-06 this peaking of demand in the morning during winter
matters is use of water heating appliances like geysers, immersion rods etc. These heating
appliances consume high amounts of electricity.
11.34 For proper grid management it is essential that consumers should be encouraged to opt
for alternative methods to meet their water heating requirements. Solar water heaters offer an
excellent alternative to electrical water heating system and can help in a big way in reducing
the demand during the morning hours. It also results in substantial reduction in the
consumers’energy bills. So use of solar heating is, thus, a win-win situation for consumers as
well as utilities.
11.35 In order to encourage consumers to switch over to solar water heating system, the
Commission proposes to introduce a monthly rebate of Rs.30 for all consumers who have
installed such solar water heating systems for meeting their hot water requirements and these
are actually used. To avail this rebate, the consumer will be required to give the licensee an
affidavit to the effect that such a system has been installed on his premises and is being used
to meet his water heating requirements. The declaration can be verified by the licensee’s
meter readers / representative, if required. In case, any such declaration is found to be false,
the licensee apart from taking appropriate legal action against such consumer would be
entitled to recover the entire rebate allowed to such consumers with 100% penalty.
As per the estimates of 2006-07 the power requirement of ASEB is more than the availability
during the months of April, June and September-February.The deficit of 221MU for the year of
2006-07(after considering an export of 140 MU during the surplus months) has to be made up
by purchasing power from traders at an estimated average cost of Rs.3.57 per unit.To this the
indirect benefits of renewable energy needs to be added before fixing the tariff for biomass
based power.
.
1.6
ROLE OF FINANCIAL INSTITUTIONS
The leading financial institution extending the financial assistance is IREDA. Indian Renewable
Energy Development Agency (IREDA) the financial arm of Ministry also extends the financial
assistance for setting up these power plants. The other financial institutions like IDFC, IDBI,
10 MW Biomass Based Power Plant
ABEIL
ICICI, HUDCO and nationalized banks like State Bank of India, Andhra Bank etc are also
extending the financial assistance.
IREDA is having the fixed rate of interest, irrespective of the promoter, but it is having different
rate of interest depending upon the capacity of the power plant and the boiler pressure.
Whereas, the other financial institutions interest rate is depending upon the credit rating of
promoter, i.e. PLR rate of financial institution and some points.
As per IREDA’s guidelines, the promoter has to bring minimum of 30% of project cost as their
equity. The interest rate for the biomass power projects is 10.5%. Repayment of loan is for the
period of 10 years after commissioning. This period is inclusive 3 years of moratorium followed
by loan repayment.
Special concession is given for North Eastern states
Concessions given to North Eastern States are given below:
Grid Connected Power Projects:
1. Rebate of 1.0% pa in interest rates
2. Exemption from Payment of
a. Registration Fees
b. Inspection Charges
c. Legal Charges (other than incurred for Recovery)
d. Expenditure Incurred on Nominee Directors
e. Front End Fee
3. Concession of 5% in Promoters contribution
4. Cost of DPR preparation for Grid Connected projects by BDAS
Security norms of IREDA are given below:
1. Equitable mortgage (Mortgage by deposit of title deeds) of all immovable properties;
2. Hypothecation of movable assets, both existing and future subject to prior charge of
Banks on specified current assets
3. Guarantees by promoters/promoter Directors and promoter companies
4. Deposit of post dated cheques in accordance with repayment schedule of principal loan
amount and interest.
HUDCO:
HUDCO also gives the term loan to the extent of 70% of the project cost. Conditions of
HUDCO are given below:
10 MW Biomass Based Power Plant
ABEIL
For Bagasse/Bio-Mass Based Co-generation Schemes:
 Availability of bagasse and other secondary fuel (minimum 125%) of requirement for the
proposed capacity of co-generation scheme
 Scheme may have provision for use of alternate fossil fuel such as coal as per MNES
norms.
 Design parameter should be for 65 Kg per Sq. cm. pressure / 485 degree C temperature
or higher steam parameters.
 The minimum capacity of the sugar unit should be 2500 TCD.
 Minimum annual DSCR of 1.2 and Average DSCR of 1.5.
 The minimum IRR of the project should be at least 15% or 3% more than HUDCO’s Rate
of Interest whichever is higher.
 Track record of two successful crushing seasons of sugarcane with no outstanding dues
in cane procurement and other goods in case of bagasse based co-generation project.
 The agency should not have been in loss during the last three financial years.
 However, in case of newly formed borrowing agencies, the proposal can be considered on
the financial strength of the project/parent company with additional risk mitigation
measures, such as, reduced debt exposure or increased margin of security for loan. In
such cases, the balance sheet of the parent company should be examined.
Mortgage/hypothecation of all project properties (land, building and plant & machinery and
equipment) for private agencies. The total security cover should be minimum 150% (likely to
be increased to 175%)of the loan amount which shall include 125% (likely to be increased to
150%)cover towards prime security and minimum 25% in the form of collateral security (for
private sector schemes only):
The 25% collateral security cover can be through any or combination of the items indicated
below:
a. Cash deposits (minimum of 15% of loan amount)
b. First charge (pledge of equity shares of any other listed Company / hypothecation /
mortgage) on personal properties of promoters.
c. First charge (pledge / hypothecation/ mortgage) on other unencumbered properties of
the company (other than project assets) or other un-encumbered properties of any
other person / company.
d. Pari-passu charge (hypothecation of movable properties and/or mortgage of
immovable properties not financed by HUDCO) with other lenders.
In addition to the above, agency shall furnish the following: 



Personal guarantee of Promoters.
Corporate Guarantee (if promoter is a Company)
A letter of Undertaking from the Agency to credit into the TRA all the Govt. subsidies
(including MNES subsidies) This TRA account will be under the control of HUDCO.
Assignment of contractual rights, title, interest, benefit, claims under various project
documents, agreements and all licenses, permits, approvals and consents in respect
of the project.
10 MW Biomass Based Power Plant






ABEIL
Power of Attorney to sell the project assets.
Assignment of all insurance policies relating to the project up to the satisfaction of
HUDCO.
Pledging of 51% of equity shares (if available) to HUDCO.
Opening of Trust and Retention Account/Escrow Account as per HUDCO norms with
first charge on all receivables in HUDCO’s favour.
Corporate guarantee acceptable to HUDCO.
The valuation of the properties should be done by a valuer recognized by the Income
Tax Department / Nationalised Banks/ Government approved valuer for the purpose of
mortgage of the properties.
Post dated cheques of the closely held Companies/Firms/Association of persons.
1.7
ASSAM GOVT POLICIES
Ministry of Non Conventional Energy Sources, Govt. of India, had given the guidelines on
power purchase by state electricity boards. Assam Government is yet to announce the policy
based on the guidelines of MNES. Based on the projected deficit of 221MU for 2006-07 for
which power is being purchased at an average rate of Rs.3.57 per unit,the cap ratef for the
sale of renewable power to the grid can be fixed at Rs.3.50 per unit for a quantum of 200MU
per annum.
1.8
ADVANTAGES OF BIOMASS BASED POWER PLANTS
Biomass based project situated in rural areas will contribute the following:
1.8.1
*
Employment Generation
*
Social Consideration
*
Impact on National Power
Employment Generation
Biomass based power plant purely depends on the biomass collection. Biomass is obtained as
crop residue and agro industrial residue. As the biomass is having low bulk density and needs
a scientific approach for collection unemployed youths can form a NGO to collect the biomass
and sell the same to project. In nutshell biomass bank will be created. Biomass preparation
system followed by transportation will help the locals to be employed. Even power plant needs
the operating persons. This plant will keep the skilled manpower hence the local youth are
exposed to the skilled jobs. There is an indirect employment generation, as more industries
will come up in the area, due to less problems of power in that location. Hence there will be
requirement of additional manpower.
10 MW Biomass Based Power Plant
1.8.2
ABEIL
Social Considerations
The setting up of the proposed plant will have a very positive impact on the purchasing
capacity of individuals as they will be able to get money for the crop residue, which at present
is either, burnt or too much under utilized.
1.8.3
Impact on National Power
Today most of the states are having distribution losses of more than 20%. As the power is
available at local point, this power will be equivalent to 120% of the conventional power plant
generation. This will save the transmission losses and also assures the reliability in power
supply.
The power generation from biomass plays an important role in supplementing the power
requirement in rural areas. This power generation leads to decentralized power generation
and improves the general condition of rural masses. At present biomass is being used to
generate steam and power in agro industries like Sugar Plants and rice mills. The biomass is
also used as fodder, domestic fuel and left out is burnt in the open areas.
Biomass is produced as crop residue, agro industry residue and waste from barren and
uncultivable land and forests. Even though cattle also generate biomass as dung, the quantity
is consumed as domestic fuel in combination with wood.
Biomass consumption is taken for domestic fuel, cattle feed, manure, thatching etc. Biomass
is consumed in industry, to generate steam. Today the surplus biomass is burnt in the open
fields due to non-availability of attractive proposal.
Biomass Based Power Plants will get the benefit of CDM.
1.9
Climatic Change Problem and Response
1.9.1
The United Nations Framework Convention on Climate Change, UNFCCC
In June 1992, the “United Nations Framework Convention on Climate Change” (UNFCCC)
was signed in Rio de Janeiro by over 150 nations. The climate convention is the base or
international co-operation within the climate change area. In the convention the climate
problem’s seriousness is stressed. There is a concern that human activities are enhancing the
natural greenhouse effect, which can have serious consequences on human settlements and
ecosystems. The convention’s overall objective is the stabilization of greenhouse gas
conncentrations in the atmosphere at a level that would prevent dangerous anthropogenic
10 MW Biomass Based Power Plant
ABEIL
interference with the climate system.” The principle commitment applying to parties of the
convention is the adoption of policies and measures on the mitigation of climate change, by
limiting anthropogenic emissions Global Environmental Concerns greenhouse gases and
protecting and enhancing greenhouse gas sinks and reservoirs. The commitment includes the
preparation and communication of national inventories of greenhouse gases. The Climate
convention does not have any quantitative targets or timetables for individual nations.
However, the overall objective can be interpreted as stabilization of emissions of greenhouse
gases by year 2000 at 1990 levels. The deciding body of the climate convention is the
Conference of Parties (COP). At the COP meetings, obligations made by the parties are
examined and the objectives and implementation of the climate convention are further defined
and developed. The first COP was held in Berlin, Germany in 1995 and the latest (COP 10)
was held in December 2004,Buenos Aires, Argentina.
1.9.2
The Kyoto Protocol
There is a scientific consensus that human activities are causing global warming that could
result in significant impacts such as sea level rise, changes in weather patterns and adverse
health effects. As it became apparent that major nations such as the United States and Japan
would not meet the voluntary stabilization target by 2000, Parties to the Convention decided in
1995 to enter into negotiations on a protocol to establish legally binding limitations or
reductions in greenhouse gas emissions. It was decided by the Parties that this round of
negotiations would establish limitations only for the developed countries, including the former
Communist countries (called annex A countries). Negotiations on the Kyoto Protocol to the
United Nations Framework Convention on Climate Change (UNFCCC) were completed
December 11, 1997, committing the industrialized nations to specify, legally binding reductions
in emissions of six greenhouse gases. The 6 major greenhouse gases covered by the protocol
are carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydro fluorocarbons (HFCs),
per fluorocarbons (PFCs), and sulfur hxafluoride (SF 6).
Emissions Reductions
The United States would be obligated under the Protocol to a cumulative reduction in its
greenhouse gas emissions of 7% below 1990 levels for three greenhouse gases (including
carbon dioxide), and below 1995 levels for the three man-made gases, averaged over the
commitment period 2008 to 2012.
10 MW Biomass Based Power Plant
ABEIL
The Protocol states that developed countries are committed, individually or jointly, to ensuring
that their aggregate anthropogenic carbon dioxide equivalent emissions of greenhouse gases
do not exceed amounts assigned to each country with a view to reducing their overall
emissions of such gases by at least 5% below 1990 levels in the commitment period 2008 to
2012. The amounts for each country are listed as percentages of the base year, 1990 and
range from 92% (a reduction of 8%) for most European countries--to 110% (an increase of
10%) for Iceland.
Developing Country Responsibilities
Another problematic area is that the treaty is ambiguous regarding the extent to which
developing nations will participate in the effort to limit global emissions. The original 1992
climate treaty made it clears that, while the developed nations most responsible for the current
buildup of greenhouse gases in the atmosphere should take the lead in combating climate
change; developing nations also have a role to play in protecting the global climate.
Developing countries, including India and China, do not have to commit to reductions in this
first time period because their per-capita emissions are much lower than those of developed
countries, and their economies are less able to absorb the initial costs of changing to cleaner
fuels. They have not contributed significantly to today’s levels of pollution that has been the
product of the developed world’s Industrial Revolution. The idea is that developing countries
will be brought more actively into the agreement as new energy technologies develops and as
they industrialize further.
Annex I and Annex II Parties
Annex I parties are countries which have commitments according to the Kyoto protocol. The
entire Annex I parties are listed in the Table 9.1 below. Further Annex I parties shown in bold
are also called Annex II parties. These Annex II parties have a special obligation to provide
“new and additional financial sources” to developing countries (non Annex I) to help them
tackle climate change, as well as to facilitate the transfer of climate friendly technologies to
both developing countries and to economies in transition. Commitments are presented as
percentage of base year emission levels to be achieved during between 2008 – 2012.
Actions required from developed and developing Nations
The Kyoto Protocol does call on all Parties (developed and developing) to take a number of
steps to formulate national and regional programs to improve "local emission factors,” activity
data, models, and national inventories of greenhouse gas emissions and sinks that remove
these gases from the atmosphere. All Parties are also committed to formulate, publish, and
10 MW Biomass Based Power Plant
ABEIL
update climate change mitigation and adaptation measures, and to cooperate in promotion
and transfer of environmentally sound technologies and in scientific and technical research on
the climate system.
Who is bound by the Kyoto Protocol?
The Kyoto Protocol has to be signed and ratified by 55 countries (including those responsible
for at least 55% of the developed world's 1990 carbon dioxide emissions) before it can enter
into force. Now that Russia has ratified, this been achieved and the Protocol will enter into
force on 16 February 2005.
1.9.3
India’s Greenhouse Gas Emissions
India has experienced a dramatic growth in fossil fuel CO2 emissions, and the data compiled
by various agencies shows an increase of nearly 5.9 % since 1950. At present India is rated
as the 6th largest contributor of CO2 emissions behind China, the 2nd largest contributor.
However, our per capita CO2 of 0.93 tons per annum is well below the world average of 3.87
tons per annum. Fossil fuel emissions in India continue to result largely from coal burning.
India is highly vulnerable to climate change as its economy is heavily reliant on climate
sensitive sectors like agriculture and forestry. The vast low-lying and densely populated
coastline is susceptible to rise in sea level. The energy sector is the largest contributor of
carbon dioxide emissions in India. The national inventory of greenhouse gases indicates that
55% of the total national emissions come from energy sector. These include emissions from
road transport; burning of traditional bio-mass fuels, coal mining, and fugitive emissions from
oil and natural gas. Agriculture sector constitutes the next major contributor, accounting for
nearly 34%. The emissions under this sector include those from enteric fermentation in
domestic animals, manure management, rice cultivation, and burning of agriculture residues.
Emissions from Industrial sector mainly came from cement production.
Indian Response to Climatic Change
Under the UNFCCC, developing countries such as India do not have binding GHG mitigation
commitments in recognition of their small contribution to the greenhouse problem as well as
low financial and technical capacities. The Ministry of Environment and Forests is the nodal
agency for climate change issues in India. It has constituted Working Groups on the UNFCCC
and Kyoto Protocol. Work is currently in progress on India's initial National Communication
(NATCOM) to the UNFCCC. India ratified the Kyoto Protocol in 2002.
10 MW Biomass Based Power Plant
1.9.4
ABEIL
The Conference of the Parties (COP)
The Conference of the Parties is the supreme body of the Climate Change Convention. The
vast majority of the world’s countries are members (185 as of July 2001). The Convention
enters into force for a country 90 days after that country ratifies it. The COP held its first
session in 1995 and will continue to meet annually unless decided otherwise. However,
various subsidiary bodies that advise and support the COP meet more frequently. The
Convention states that the COP must periodically examine the obligations of the Parties and
the institutional arrangements under the Convention. It should do this in light of the
Convention’s objective, the experience gained in its implementation, and the current state of
scientific knowledge.
Exchange of Information
The COP assesses information about policies and emissions that the Parties share with each
other through their national communications. It also promotes and guides the development
and periodic refinement of comparable methodologies, which are needed for quantifying net
greenhouse gas emissions and evaluating the effectiveness of measures to limit them. Based
on the information available, the COP assesses the Parties efforts to meet their treaty
commitments and adopts and publishes regular reports on the Convention’s implementation.
Support for Developing countries
Developing countries need support so that they can submit their national communications,
adapt to the adverse effects of climate change, and obtain environmentally sound
technologies. The COP therefore oversees the provision of new and additional resources by
developed countries. The third session of the Conference of the Parties adopted the Kyoto
Protocol.
1.9.5
The Flexible Mechanisms
The Kyoto protocol gives the Annex I countries the option to fulfill a part of their commitments
through three “flexible mechanisms”. Through these mechanisms, a country can fulfill a part of
their emissions reductions in another country or buy emission allowances from another
country. There are three flexible mechanisms:
10 MW Biomass Based Power Plant
ABEIL
i. Emissions trading
ii. Joint implementation
iii. Clean development mechanism
i) Emissions trading
Article 17 of the Kyoto protocol opens up for emissions trading between countries that have
made commitments to reduce greenhouse gas emissions. The countries have the option to
delegate this right of emissions trading to companies or other organisations.In a system for
emissions trading, the total amount of emissions permitted is pre-defined. The corresponding
emissions allowances are then issued to the emitting installations through auction or issued
freely. Through trading, installations with low costs for reductions are stimulated to make
reductions and sell their surplus of emissions allowances to organizations where reductions
are more expensive. Both the selling and buying company wins on this flexibility that trade
offers with positive effects on economy, resource efficiency and climate. The environmental
advantage is that one knows, in advance, the amount of greenhouse gases that will be
emitted. The economical advantage is that the reductions are done where the reduction costs
are the lowest. The system allows for a cost effective way to reach a predefined target and
stimulates environmental technology development.
i)
Joint Implementation, JI
Under article 6 of the Kyoto protocol an Annex I country that has made a commitment for
reducing greenhouse gases, can offer to, or obtain from another Annex I country greenhouse
gas emissions reductions. These emissions reductions shall come from projects with the
objectives to reduce anthropogenic emissions from sources or increase the anthropogenic
uptake in sinks. In order to be accepted as JI-projects, the projects have to be accepted by
both parties in advance. It also has to be proven that the projects will lead to emissions
reductions that are higher than what otherwise would have been obtained. JI-projects are an
instrument for one industrial country to invest in another industrial country and in return obtain
emissions reductions. These reductions can be used to help fulfill their own reduction
commitments at a lower cost than if they had to do the reductions in their own country.
10 MW Biomass Based Power Plant
ABEIL
Clean Development Mechanism (CDM)
Article 12 of the Kyoto protocol defines the Clean Development Mechanism, CDM. The
purpose of CDM is to:
a) Contribute to sustainable development in developing countries;
b) Help Annex I-countries under the Kyoto Protocol to meet their target.
With the help of CDM, countries which have set themselves an emission reduction target
under the Kyoto Protocol (Annex I countries) can contribute to the financing of projects in
developing countries (non-Annex I countries), which do not have a reduction target. These
projects should reduce the emission of greenhouse gases while contributing to the sustainable
development of the host country involved. The achieved emission reductions can be
purchased by the Annex I country in order to meet its reduction target.
In order to be accepted as CDM-projects, the projects have to be accepted by both parties in
advance. It also has to be proven that the projects will lead to emissions reductions that are
higher than what otherwise would have been obtained. The difference between JI-projects and
CDM-projects is that JI-projects are done between countries that both have commitments,
while the CDM-projects is between one country that has commitments and another country
that does not have commitments. Emissions reductions that have been done through CDMprojects during the period 2000 to 2007 can be used for fulfilling commitments in Annex I
countries for the period 2008-2012.
How CDM works?
An investor from a developed country, can invest in, or provide finance for a project in a
developing country that reduces greenhouse gas emissions so that they are lower than they
would have been without the extra investment – i.e. compared to what would have happened
without the CDM under a business as usual outcome. The investor then gets credits – carbon
credits - for the reductions and can use those credits to meet their Kyoto target. If the CDM
works perfectly it will not result in more or less emission reductions being achieved than were
agreed under the Kyoto Protocol, it will simply change the location in which some of the
reductions will happen. For example, a French company needs to reduce its emissions as part
of its contribution to meeting France’s emission reduction target under the Kyoto Protocol.
Instead of reducing emissions from its own activities in France, the company provides funding
for the construction of a new biomass plant in India that would not have been able to go ahead
without this investment. This, they argue, prevents the construction of new fossil-fueled plants
10 MW Biomass Based Power Plant
ABEIL
in India, or displaces consumption of electricity from existing ones, leading to Global
Environmental Concerns reduction in greenhouse gas emissions in India. The French investor
gets credit for those reductions and can use them to help meet their reduction target in
France.
1.9.6
Requirements for Participating in CDM
Project Cycle for CDM
Global Environmental Concerns While investors profit from CDM projects by obtaining
reductions at costs lower than in their own countries, the gains to the developing country host
parties are in the form of finance, technology, and sustainable development benefits. Projects
starting in the year 2000 are eligible to earn Certified Emission Reductions (CERs) if they lead
to "real, measurable, and long-term" GHG reductions, which are additional to any that would
occur in the absence of the CDM project. This includes afforestation and reforestation
projects, which lead to the sequestration of carbon dioxide. At COP-7, it was decided that the
following types of projects would qualify for fast-track approval procedures:
- Renewable energy projects with output capacity up to 15 MW
- Energy efficiency improvement projects, which reduce energy consumption on the supply
and/or demand side by up to 15 GWh annually
- Other project activities that both reduce emissions by sources and directly emit less than 15
kilotons CO2 equivalent annually.
The CDM will be supervised by an executive board, and a share of the proceeds from project
activities will be used to assist developing countries in meeting the costs of adaptation to
climate change.
Indian Initiatives on CDM
Government of India has been willing to fulfill its responsibility under the CDM. It has
developed an interim criterion for approval of CDM project activities, which is now available to
stakeholders. It has undertaken various capacity building activities like holding of workshops,
initiation of various studies, and briefing meeting with the stakeholders. India has been actively
participating in the CDM regime and has already approved projects for further development.
Under CDM, projects such as energy efficient hydrocarbon refrigerators, modernization of
10 MW Biomass Based Power Plant
ABEIL
small scale foundry units and renovation, modernization of thermal power stations etc. are
being taken up.
1.9.7
Prototype Carbon Fund (PCF)
Recognizing that global warming will have the most impact on its borrowing client countries,
the World Bank approved the establishment of the Prototype Carbon Fund (PCF). The PCF is
intended to invest in projects that will produce high quality greenhouse gas emission
educations that could be registered with the United Nations Framework Convention on Climate
Change UNFCCC) for the purposes of the Kyoto Protocol. To increase the likelihood that the
ductions will be recognized by the Parties to the UNFCCC, independent experts will follow
validation, verification and certification procedures that respond to UNFCCC rules as they
develop. The PCF will pilot production of emission reductions within the framework of Joint
Implementation (JI) and the Clean Development Mechanism (CDM). The PCF will invest
contributions made by companies and governments in projects designed to produce emission
reductions fully consistent with the Kyoto Protocol and the emerging framework for JI and the
CDM. Contributors, or "Participants" in the PCF, will receive a pro rata share of the emission
reductions, verified and certified in accordance with agreements reached with the respective
countries "hosting" the projects.
1.9.8
Size of Market for Emissions Reductions
• All estimates of market volume are speculative at this early stage in the market’s
development.
• One way of looking at the potential size of the market is to assume that about one billion
tonnes of carbon emissions must be reduced per year during the commitment period of 20082012 in order for the industrialized countries to meet their obligations of a 5% reduction in their
1990 levels of emissions.
Under Prototype carbon fund programme of the World Bank. Government of India has
approved a municipal solid waste energy project for implementation in Chennai, which
proposes to use the state of art technology for extracting energy from any solid waste
irrespective of the energy content. Many industrial organizations in the private sector have
also sought assistance under this fund.
10 MW Biomass Based Power Plant
SIGNIFICANCE OF CDM

Achieve sustainable development

Reduce impact on environment

Additional stream of income through sale of emission reductions

Contributes for rural development

Reduce pollution levels

Technology improvement

Improves economics of project

Helps developed countries to achieve their emission reduction commitments
ABEIL
10 MW Biomass Based Power Plant
ABEIL
2. DEMAND ANALYSIS AND JUSTIFICATION OF THE PROJECT
2.0
INTRODUCTION
It is a well-known fact that electricity is the most essential input for growth and development of
any state. Assam is planning to grow rapidly in both the industrial and agricultural sectors and
consequently the demand for power is on the rise. However, the growth in installed power
generating capacity has not kept pace with the projected demand.
2.1
POWER SECTOR REFORMS IN ASSAM
Govt. of Assam decided to reforms its Power Sector with the objective of creating conditions
for sustainable development of the Power Sector and improving efficiency and quality of
service to the consumers by allowing private participation in the State Power Sector.
The Govt. of Assam established Assam Electricity Regulatory Commission (AERC). to
regulate the functioning of the Power Sector on sound commercial principles, to safeguard the
interests of the Consumers in respect of quality, reliability and fair price for electricity and to
set cost and efficiency based tariff to ensure credit worthiness and viability of the Power
Sector so as to progressively eliminate tariff distortions and subsidies. The Commission is fully
functional and regulating the State Power Sector utilities.
Assam state with Dispur as its capital has an area of 78,438 sq. Km and a population of
22.4 million. Administratively it is divided into 23 districts comprising of 87 towns and 28,590
villages (as per 1991 census).
The state is predominantly agrarian with 89 percent of the population being rural. About
63% of its population is engaged in agriculture and allied activities, of which tea plantation
is the most important. Assam is endowed with rich mineral resources. It has reserves of
coal, limestone, petroleum and natural gas.
2.2
Growth of Power Sector
Significant growth in Power Sector in the State with the establishment of the State
Electricity Board took place. Apart from building up installed capacity of 554 MW as on 31st
March 1997 as against 132 MW in 1975, electricity is extended to 19,019 out of 24,685
villages (habitated) covering 77% of villages in the State as on 31st March 1997 as against
10 MW Biomass Based Power Plant
ABEIL
190 in 1975. ASEB is serving 9,11,514 consumers as on 30th June, 2001 - up from
7,12,714 consumers as on 31st March 1997 and 1,08,613 in 1975. The per capita
consumption in the State over the last two decades is summarized briefly in the table
below:
Particulars
1975
1996-97
Installed Capacity (MW)
132
554
Energy Available (MU)
556
2,609
Length of HT Lines (ckt km)
5,456
42,615
Length of LT Lines* (ckt km)
8,763
41,872
Substations (33kv & above) (MVA)
678
2,518
Distribution Transformers (MVA)
391
1,657
Towns & Villages electrified (Nos.)
190
21,887
1,08,613
7,12,714
31
104
1975
1996-97
Installed Capacity (MW)
132
554
Energy Available (MU)
556
2,609
5,456
42,615
Number of consumers served
Per capita consumption (kWh/person)
Particulars
Length of HT Lines (ckt km)
2.4
Energy Resources
Assam has rich reserves of coal, petroleum and natural gas. The North-eastern region is
endowed with about 37% of all India hydroelectric resources. The estimated hydroelectric
potential of the region is about 31,857 MW at 60% load factor, out of which 315 MW have
already been exploited and 305 MW are under development. Assam being an integral part
of the North-Eastern region, it would be the beneficiary of development of hydro potential in
the region.
2.4.1
Industry Structure
Assam State Electricity Board (ASEB) constituted under the Electricity Act 1948 is
responsible for generation, transmission and distribution of electricity in the State. An
Electricity Board was constituted in 1958 in the composite state of Assam. The existing
Board covers only part of the old State which was trifurcated into Assam, Meghalaya and
Mizoram in 1972.
10 MW Biomass Based Power Plant
ABEIL
North Eastern Electric Power Corporation (NEEPCO), a Government of India Corporation,
was established in 1976 for establishing and operating hydro and thermal power plants with
transmission network in the North-eastern region supplementing the efforts of the States in
power development in the region.
Power Grid Corporation of India (PGCIL), a Government of India Corporation, was
established in 1989 for planning, construction and operation of central transmission system
in the country had taken over the transmission network of NEEPCO in the region. PGCIL
has been made responsible for major works in the future in transmission sector.
Independent Power Producers (IPP) such as DLF has also started operating since 1997 in
the southern part of the State with a total installed capacity of 24.5 MW.
LIST OF CAPTIVE POWER PLANTS IN ASSAM.
S.No.
Company
Industry
Fuel
Capacity
Location
1.
Hindustan Paper
Corp., Jagiroad
Paper
Coal
2x15 MW
Jagiroad, DistNagaon
2.
Hindustan Paper
Corp., Panchgram
Paper
Coal
2x15 MW
Panchgram, DistCachar
3.
Bongaigaon Refinery
& Petro Chemicals
Ltd.
Oil
Oil/Gas
3x16 MW
Dhaligaon, DistBongaigaon
4.
Oil India Ltd.
Duliajan
Oil
Gas
2x15 MW
Duliajan, DistTinsukia
Moran, DistSibsagar.
2x3 MW
5.
Hindustan Fertilizer
Corp. Namrup
Fertilizer
Gas
1x20 MW
1x7 MW
2x1 MW
Namrup, DistDibrugarh
6.
Indian Oil Corp. Ltd.
Guwahati Refinery
Oil
Oil(RCO)
2x8 MW
Noonmati
Guwahati.
7.
Indian Oil Corp. Ltd.
Digboi Refinery
Oil
Gas/Oil
3x8.5 MW
8.
ONGC Ltd.
Rudrasagar
Oil &
Natural
Gas
Gas
2x3 MW
Rudrasagar, DistSibsagar
9.
ONGC Ltd. Geleky
Oil &
Natural
Gas
Gas
3x3 MW
Geleky, DistSibsagar.
Digboi, DistTinsukia
10 MW Biomass Based Power Plant
ABEIL
10.
ONGC Ltd. Lakwa
Oil &
Natural
Gas
Gas
3x3 MW
Lakwa, DistSibsagar
11.
Assam Industrial
Dev. Corp. Sack
craft Project
Paper
Coal
1x5 MW
(closed)
Dhing, Dist,
Nagaon
12.
M/s. Prag Bosimi
Synthetics Ltd.
Sipajhar
Polyester
Fibre
Diesel
2x1.6 MW
4x2.7 MW
Sipajhar, DistDarrang
13.
Ashok Paper Mills,
Jogighopa,
Paper
Diesel
1x8.3 MW
not under
operation
Jogighopa, DistBongaigaon
14.
CCI, Bokajan
Cement
Diesel
1x4 MW
15.
Numaligarh Refinery
Ltd. Golaghat
Oil
Gas
Diesel
2x34 MW
1x1.17 MVA
Numaligarh, DistJorhat.
16.
Gas Authority of
India Ltd. Lakwa
Gas
Gas
Diesel
2x3.125 MW
2x0.2 MW
Lakwa, DistSibsagar
17.
IOC (AOD) Digboi
Oil
Gas
1x20 MW
Bokajan, DistKarbi Anglong
Digboi
2.5 The Current Power Scenario in Assam
2.5.1
Installed Capacity
The installed capacity in the State as on 31st March 2002 is 574.4 MW. In addition to its own
installed capacity, the State has a share of 288 MW from Central Sector Generating Stations
owned by NEEPCO and NHPC. Besides this, the State has also 24.5 MW of private power (IPP)
generation. The total capacity thus available for the State is 886.9 MW. The details of installed
capacity are given below:
Type of Generation
Hydro
Coal
Capacity in MW
2.0
240.0
Oil
60.0
Gas
274.4
State's Installed Capacity:
574.4
Private Sector
24.5
Import from Other Sectors
288.0
Total Availability:
886.9
10 MW Biomass Based Power Plant
ABEIL
In addition, the State has captive generating capacity of 451 MW of which 207 MW with
refineries, Oil India, ONGCL and paper mills etc. and 244 MW with tea gardens and other
industries.
The station wise details of ASEB's installed capacity are given below:
Sl No.
Station
Capacity (MW)
1
Bongaigaon Thermal (coal fired)
240.0
2
Chandrapur Thermal (oil fired)
3
Lakwa Thermal (gas fired)
120.0
4
Namrup Thermal (gas fired)
133.5
5
Mobile (gas fired)
6
Hydro
60.0
18.9
2.0
2.5.2 Generation, Purchase and Sales
ASEB has generated 868.54 MU (excluding auxiliary consumption) during 2000-2001 and
purchased 2292.77 MU from Central Sector, Meghalaya, IPP and Eastern region. This includes
135.33 MU free power from NEEPCO hydro generation. The total energy thus available for sale
was 3161.31 MU.
2.5.3 Power supply position in the State
The peak demand and energy requirement met during 2000-2001 is 580.0 MW and 8.0 MU (per
day) respectively. But at this level of supply both peak and energy was short of the real demand.
The unrestricted peak demand and energy requirement are assessed at 600 MW and 9.0 MU
(per day) respectively. The unrestricted peak demand and energy requirement have to be studied
further.
2.5.4 Consumer Profile and Energy Sales.
ASEB serves 9.11 Lakh consumers as on 2001-2002 with toal connected load of 1,650 MW. The
rural domestic and commercial consumers numbering 1.5 Lakh (16.5% of total number of
consumers) are not metered. However, all the services released from 1992 are metered. The
State has about 2009 irrigation pumpsets. The Irrigation Deptt. operates most of these pumpsets
and the consumption is metered.
10 MW Biomass Based Power Plant
ABEIL
GENERATION
Assam State Electricty Board has four major Thermal Generating Stations.
Installed Capacity
STATION
BTPS
CTPS
LTPS
NTPS
MOBILE
CAPACITY
240.0
60.0
120.0
133.5
18.9
HYDRO
2.0
Unit-wise details are:
 BTPS: 4 x 60 MW Coal fired Steam Turbine.
 CTPS: 2 x 30 MW Oil fired Steam Turbine.
 LTPS: 4 x 15 MW + 3 x 20 MW Gas Turbine.
 NTPS: 3 x 23 MW + 1 x 12.5 MW Gas Turbine + 1 x 30 MW Gas fired Steam Turbine + 1 x
22 MW Waste Heat Recovery Unit.
 Mobile: 3 x 2.7 + 4 x 2.7 MW
 Hydro: 2.0 MW
Total generating capacity: 574.4 MW
Type of Installed Capacity
Type of Generation
Hydro
Coal
MW
2.0
240.0
Oil
60.0
Gas
274.4
State's Installed Capacity:
574.4
2.6 Rural Electrification
ASEB had started the Rural Electrification (RE) programme in 1966-67 with a Cell headed by an
Executive Engineer under Chief Engineer (Electrical). To cope up with tempo of RE works, the
Cell was upgraded at various stages, to the Circle, Zone & Wing level being headed by
Superintending Engineer, Additional Chief Engineer & Chief Engineer respectively. However,
during slack period the Wing was put under ACE on a few occasions. At present RE Wing is
headed by Chief Engineer and entrusted with preparation of schemes, monitoring progress of RE
works which are being carried out by respective O&M Divisions under Chief Engineer
(Distribution).
10 MW Biomass Based Power Plant
ABEIL
2.6.1 Status of Electrification:
ASEB has electrified 19,019 villages under various RE schemes, 5,666 nos of villages are yet to
be electrified (List of unelectrified villages). Most of the schemes were financed by REC Ltd. on
long term loan amounting to Rs. 329.84 Crore. A few schemes were also taken under State Plan.
District-wise status of electrified villages are given as below:
District-wise number of Electrified Census villages as per 1991 census
Sl No
Name of District
Total populated
village
No of villages electrified
up to 31.03.01
No of villages to
be electrified
745
706
39
1,284
1,057
227
1
Goalpara
2
Dhubri
3
Kokrajhar
923
839
84
4
Bongaigaon
858
816
42
5
Darang
1,328
1,218
110
6
Sonitpur
1,691
1,426
265
7
Barpeta
1,046
948
98
8
Nalbari
803
800
3
9
Kamrup
1,300
1,234
66
10
Nagaon
1,379
1,249
126
11
Marigaon
569
432
137
12
Sibsagar
873
817
56
13
Golaghat
1,059
658
481
14
Jorhat
798
614
184
15
Lakhimpur
1,140
854
286
16
Dhemaji
1,110
342
768
17
Cachar
1,024
923
101
18
Hailakandi
327
290
37
19
Karimganj
893
535
358
20
Dibrugarh
1,306
1,136
170
21
Tinsukia
1,136
825
311
22
Karbi Anglong
2,520
1,039
1,481
23
N. C. Hills
577
261
316
--
Total
24,685
19,019
5,666
10 MW Biomass Based Power Plant
ABEIL
Government of India has also envisages the use of Non-Conventional sources of energy for
electrification of remote villages where Grid power cannot be extended economically. In the first
phase about 300 remote villages in Assam have been proposed to be electrified with NonConventional sources of energy viz. Photo Voltaic Cell, Micro Hydro and BioMass.
2.7 Brief Note on Tariff Petitions for FY 06-07
Assam State Electricity Board (ASEB) and its five successor entities submitted petition for Annual
Revenue Requirements (ARR) for FY2006-2007 along with tariff revision proposals to meet the
additional revenue requirements before the Hon’ble Assam Electricity Regulatory Commission (AERC)
as per provisions of The Electricity act 2003.
As per the provisions of Assam Electricity Reform First Transfer Scheme 2004, notified by the State
Government as per the provision of The Electricity Act, the ASEB is now carrying out the function of
bulk purchaser and bulk supplier. Accordingly ASEB has filed petition before the Commission for Bulk
Supply Tariff applicable for distribution companies.
ASEB had projected an expenditure ofRs.717.27 crores in its ARR filings for 2006-07 for the purchase
of 3809.48 MU to meet the requirements of DISCOM sales of 2354.98 MU and trading sales of 140
MU.Against this, the Commission has approved a quantum o 4098.36MU to meet the requirement of
DISCOM sales of 2417.63 MU and trading sales.The DISCOM sales of 2417.63MU exclude the
distribution losses amounting to 910.38 MU which averages to 27.36%.
It has been estimated that in 2006-07 there will be a deficit of 221 MU even after the purchases of
ASEB(cited above) for which power has to be purchased from Traders at an average rate of Rs.3.57
per unit.A schedule of this deficit is given below in tabular form.
10 MW Biomass Based Power Plant
ABEIL
Schedule of Energy Deficit in ASEB during the year 2006-07
(All figures in million units)
Availability
of supply
with ASEB
ASEB
requirement
Excess
Energy
available
for Export
Energy
Deficit for
which
import is
reqd.
2.8
April May June July Aug Sept Oct Nov Dec Jan Feb Mar
252 291 296 377 398 300 315 255 281 279 263 281 3588
275
285
310
6
23
13
326
323
51
75
348
333 325
316 284 273 273 3670
8
47
18
70
36
5
10
NEED FOR THE PROJECT
The deficit in the installed capacity as well as in the energy availability as discussed in the
previous paragraphs is likely to increase in future unless corrective measures are planned
right now. This provides ample justification for the installation of 11 MW power plant at Jagi
Road in Mayong Circle of Marigaon district in Assam. After considering around one MW for
internal consumption(auxiliaries etc), a net quantum of 10 MW will be injected to the ASEB
grid. This power plant is environmental friendly and can be claimed for carbon credit.
140
221
10 MW Biomass Based Power Plant
ABEIL
3. BIOMASS POTENTIAL
3.0
INTRODUCTION
Amrit Bio Energy and Industries Limited has planned to set up a 11 MW independent biomass
based power plant with rice husk as fuel at Jagi Road in Mayong circle of Morigaon district in
Assam. This power plant is consisting of one traveling grate boiler of 50 TPH capacity
operating at 67 bar and 4850C, one extraction cum condensing turbine of 11 MW capacity.
Biomass assessment was carried out in full Kamrup and Morigaon district. For study, blocks
falling in Kamrup and Morigaon district are considered.
It is planned to have a Plant capacity utilization of 90% from the first year itself. This
Plant Load Factor will include the annual maintenance and any unscheduled stoppages due to
machine breakdown or non availability of fuel . The plant will thus be operating for 328.5 days.
Rice husk requirement for this plant on the basis of above will be 108405 MT.The internal
consumption of the plant (auxiliaries etc) is expected to be around 1 MW and the balance 10
MW of power will be sold to ASEB.
3.1 BLOCKS IN KAMRUP & MORIGAON DISTRICT
Kamrup District
Morigaon District
Sualkuchi
Mayong
Hajo
Moriabari
Goroimari
Laharighat
Chhaygaon
Bhurbandha
Chandrapur
Kapili
Dimoria
Chayani Barduar
Boko
Bongaon
Chamaria
Rani
Rampur
Bezera
10 MW Biomass Based Power Plant
Kamrup District
ABEIL
Morigaon District
Kamalpur
Rangia
Goreswar
Bihdia Jajikona
3.1
DISTRICT PROFILE
KAMRUP DISTRICT
Kamrup District is the Capital District of Assam. It is situated between 25.43° and 26.51° North
Latitude and between 90.36° and 92.12° East Longitude. The greater part of the district
consists of wide plains, through the lower portion of which the mighty river Brahmaputra
makes its way, flowing a steady course from east to west.
MORIGAON DISTRICT
Morigaon is basically an agrarian district. The District is situated in the Brahmaputra Valley
Zone of the Assam. It lies between 26.15° to 26.5° North latitude and 92° to 95.5° east
longitude. Morigaon district is the second smallest district of Assam
3.1.1
Soils
The main soils in the district are Alluvial soil. The soils in general are fertile in nature. The
District is richly endowed with natural and human resources and offer excellent scope for
development of agriculture and allied industries.
3.1.2
Climate and Rainfall
The average temperature is moderate, about 84 degrees F (29 degrees C) in the hottest
month of August. The average valley temperature in January is 61 degrees F (16 degrees C).
In this season, heavy fogs and a little rain mark the climate of the valley.
Assam does not have the normal Indian hot, dry season. Some rain occurs from March
onwards, but the real force of the monsoon winds is faced from June onward. Rainfall in
Assam ranks among the highest in the world; its annual rainfall varies from 70 inches in the
west to 120 inches per year in the east. Large concentrated during the months from June to
10 MW Biomass Based Power Plant
ABEIL
September; it often results in widespread destructive floods. Much of the state is covered with
dense tropical forests of bamboo and, at higher elevations, evergreens. Common animals of
Assam include the elephant, tiger, leopard, rhinoceros, and bear.
KAMRUP DISTRICT
This district generally experiences Sub tropical with semi -dry summer & cold in winter
extreme conditions. The maximum and minimum temperature in the district is around 38.5° C
and 7° C. The annual rainfall in the district ranges between 1500 mm to 2600 mm.
MORIGAON DISTRICT
The average annual rainfall is 1597.48 mm. The maximum temperature is felt during JuneJuly while the minimum during January.
3.1.3
Demographic Particulars
KAMRUP DISTRICT
As per 2001 census, there are 1342 inhabited villages in the district. This district has a total
population of 2522324 as of 2001 Census. The literacy percentage of the district is 74.16 %.
This district is having urban population of 908217 & rural population of 1614107 respectively.
The total Male population is 1326981 and female population is 1195343. This district is having
population density of 581 sq. kms, with sex ratio of 901 for 1000 males.
MORIGAON DISTRICT
As per 2001 census, there are 592 inhabited villages in the district. This district has a total
population of 776256 as of 2001 Census. The literacy percentage of the district is 58.53 %.
This district is having urban population of 37988 & rural population of 738268 respectively.
The total Male population is 398926 and female population is 377330. This district is having
population density of 456 sq. kms, with sex ratio of 946 for 1000 males.
3.1.4
Agriculture
10 MW Biomass Based Power Plant
ABEIL
3.1.4.1 Land Classification
The classification of geographical area under different categories of land utilised is stated in
the table below:
3.2 Land Classification (Area in Hectares)
Particulars
Kamrup
Morigaon
TOTAL
Geographical Area
446402
158765
605167
Forest
116694
17626
134320
Land put to non- agricultural uses
77246
20198
97444
Barren and unculturable land
20296
5120
25416
Permanent Pastures & other grazing land
21236
8331
29567
Land under misc. tress groves
25409
4489
29898
Culturable waste land
4573
690
5263
Fallow & current fallow
12428
939
13367
Net sown area
92680
101372
194052
(Source: Statistical book of Assam)
It can be observed from the table above, a relatively large area (97444 ha) is not available for
agriculture, while area (134320 ha) is designated as forest in the district. Only about 84881ha
land is classified as barren and uncultivable land, permanent pastures and other misc. trees.
3.1.4.3 Cropping Pattern:
The main crops grown in the district are Wheat, Paddy, Jute, Mustard etc.
3.3 Cropping pattern (Area in Ha)
Season
2004-05
2003-04
2002-03
2001-02
2000-01
Kamrup District
Kharif
110047
105798
105339
105011
104119
Rabi
105071
102754
101706
102600
101323
Total
215118
208552
207045
207611
205442
Morigaon District
Kharif
35202
34585
34013
34530
33826
Rabi
66611
66083
65419
65623
65923
Total
101813
100668
99432
100153
99749
Grand Total
316931
309220
306477
307764
305191
10 MW Biomass Based Power Plant
ABEIL
3.4 Cropped Area Kharif & Rabi Seasons (Area in Ha)
Crop Name
2004-05
2003-04
2002-03
2001-02
2000-01
KAMRUP DISTRICT
Kharif
Sualkuchi
Paddy
4498
4424
4449
4432
4426
Maize
13
10
20
11
30
Arhar
13
13
16
14
16
Sugarcane
91
90
100
64
100
576
518
522
524
466
Castor
5
6
4
6
4
Ground Nut
7
6
4
4
6
515
524
465
518
418
Paddy
14264
13864
13850
13871
13876
Maize
30
26
18
28
24
Arhar
20
24
20
20
18
Sugarcane
42
43
28
44
28
700
614
612
612
614
Castor
4
0
0
0
0
Ground Nut
0
0
0
0
0
877
866
818
814
820
Paddy
2865
2880
2880
2887
2866
Maize
30
23
16
26
10
Arhar
80
84
88
88
66
Sugarcane
43
42
44
24
42
220
224
218
218
224
Castor
0
0
0
0
0
Ground Nut
0
0
0
0
0
Other Pulses
38
44
66
43
64
2850
2726
2706
2733
2720
Jute
Other Pulses
Hajo
Jute
Other Pulses
Goroimari
Jute
Chhaygaon
Paddy
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Maize
110
110
98
115
101
Arhar
10
10
4
6
0
Sugarcane
35
36
60
38
36
Jute
75
78
66
79
60
Castor
0
0
0
0
0
Ground Nut
5
5
0
0
0
165
174
132
124
144
Paddy
1188
1165
1121
1170
1102
Maize
0
6
4
4
6
Arhar
0
4
6
6
4
Sugarcane
2
6
4
4
4
Jute
2
14
24
19
25
Castor
0
0
0
0
0
Ground Nut
0
0
2
6
0
Other Pulses
30
24
22
25
30
Paddy
4300
4303
4308
4308
4246
Maize
5
18
24
20
28
Arhar
50
50
53
48
52
Sugarcane
20
25
20
24
54
100
96
100
94
100
2
2
0
4
0
Ground Nut
27
14
10
14
0
Other Pulses
200
184
164
188
124
Paddy
1732
1602
1542
1610
1542
Maize
9
24
24
25
28
Arhar
10
10
24
10
18
Sugarcane
92
94
68
84
72
679
681
694
618
624
Castor
0
0
0
0
0
Ground Nut
0
0
0
0
0
Other Pulses
Chandrapur
Dimoria
Jute
Castor
Chayani Barduar
Jute
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
213
216
210
212
218
Paddy
4604
4536
4549
4557
4536
Maize
225
184
178
188
166
Arhar
55
56
84
52
52
Sugarcane
450
418
416
398
244
Jute
330
318
368
324
366
Castor
550
485
418
386
618
Ground Nut
170
136
0
144
0
Other Pulses
635
624
624
618
618
Paddy
2738
2676
2694
2692
2690
Maize
45
36
24
38
29
Arhar
35
24
20
18
18
Sugarcane
50
54
52
64
52
Jute
360
324
320
318
318
Castor
112
110
100
114
66
0
0
128
0
100
114
115
109
96
110
Paddy
15646
12846
12878
12856
12850
Maize
2
4
6
4
6
Arhar
578
518
521
524
518
79
64
54
84
84
1753
1724
1718
1801
1724
Castor
2
2
4
4
0
Ground Nut
2
0
0
0
0
638
624
610
618
624
Paddy
4200
4276
4242
4282
4290
Maize
0
16
18
18
16
Arhar
240
216
276
6
281
Sugarcane
360
316
300
384
278
Other Pulses
Boko
Bongaon
Ground Nut
Other Pulses
Chamaria
Sugarcane
Jute
Other Pulses
Rani
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Jute
500
561
518
484
529
Castor
140
121
118
111
168
Ground Nut
410
384
274
285
124
Other Pulses
200
196
124
184
110
Paddy
2006
2086
2078
2087
2061
Maize
10
24
28
26
24
Arhar
10
24
18
20
6
Sugarcane
111
98
66
121
110
Jute
239
134
146
125
145
Castor
1
2
6
4
6
Ground Nut
0
0
0
19
0
226
218
210
224
188
Paddy
3216
3161
3208
3106
3135
Maize
6
4
4
4
4
Arhar
12
14
14
16
10
Sugarcane
21
20
78
22
38
Jute
25
16
28
34
24
4
2
0
0
0
Ground Nut
50
48
50
42
41
Other Pulses
250
264
288
216
262
Paddy
1330
1359
1284
1358
1327
Maize
2
2
4
0
0
Arhar
2
0
6
0
4
Sugarcane
9
0
20
12
18
Jute
5
5
6
0
6
Castor
0
0
0
0
0
Ground Nut
12
16
6
6
4
Other Pulses
211
178
194
178
176
13540
13574
13549
13406
13336
Rampur
Other Pulses
Bezera
Castor
Kamalpur
Rangia
Paddy
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Maize
303
222
324
284
218
Arhar
14
0
10
12
19
Sugarcane
68
66
16
63
64
Jute
29
24
34
24
33
Castor
0
0
0
0
0
Ground Nut
0
0
0
28
20
338
324
324
316
324
Paddy
11265
11229
11333
11306
11238
Maize
24
18
16
18
6
Arhar
29
34
24
18
25
Sugarcane
161
144
121
138
24
Jute
547
524
484
366
318
0
0
0
0
0
Ground Nut
29
34
24
18
20
Other Pulses
103
112
111
98
112
Paddy
2789
2858
2810
2870
2808
Maize
7
6
6
6
6
Arhar
18
6
6
4
16
Sugarcane
98
100
96
100
94
126
133
122
111
96
6
1
0
0
0
Ground Nut
25
24
18
6
0
Other Pulses
705
724
696
711
712
Kharif Total
110047
105798
105339
105011
104119
Paddy
4206
4316
4424
4324
4428
Wheat
679
684
618
685
624
Gram
14
18
24
21
20
Seasumum
54
62
64
56
66
Linseed
48
44
48
68
66
Other Pulses
Goreswar
Castor
Bihdia Jajikona
Jute
Castor
Rabi
Sualkuchi
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
503
524
516
505
418
5
6
4
6
6
742
718
721
724
718
Paddy
5526
5418
5424
5420
5426
Wheat
670
618
624
621
628
Gram
22
20
18
22
10
177
170
138
179
166
Linseed
81
88
66
78
88
Mustard
721
524
710
718
716
0
0
2
6
2
405
444
418
414
424
Paddy
4370
4416
4524
4420
4518
Wheat
355
324
316
327
316
Gram
15
16
16
18
10
Seasumum
30
34
30
40
28
Linseed
81
24
22
40
24
Mustard
127
120
118
124
124
0
0
0
0
0
290
224
216
228
216
Paddy
4197
4124
4135
4125
4128
Wheat
210
210
208
214
210
Gram
10
10
10
13
10
6
2
6
6
6
Linseed
55
56
28
56
52
Mustard
90
94
98
98
68
Other Oilseeds
75
78
66
84
73
450
418
481
424
478
Paddy
1100
1124
1126
1128
1196
Wheat
30
36
24
38
34
Mustard
Other Oilseeds
Vegetables
Hajo
Seasumum
Other Oilseeds
Vegetables
Goroimari
Other Oilseeds
Vegetables
Chhaygaon
Seasumum
Vegetables
Chandrapur
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Gram
0
6
4
6
2
Seasumum
0
0
0
0
6
Linseed
10
6
4
15
10
Mustard
30
32
18
24
24
2
4
4
6
4
200
200
184
202
180
Paddy
4667
4614
4630
4624
4587
Wheat
122
118
120
120
118
Gram
50
44
24
42
22
Seasumum
50
44
42
52
54
Linseed
5
5
0
6
6
Mustard
105
113
110
115
110
25
26
20
28
26
1200
1200
1212
1211
1210
Paddy
4823
4618
4624
4620
4416
Wheat
181
196
184
199
186
Gram
19
20
20
18
18
Seasumum
32
34
30
24
24
Linseed
0
2
0
6
2
Mustard
179
184
188
188
168
49
52
64
56
10
200
224
218
218
210
Paddy
5369
5218
5220
5220
5210
Wheat
198
118
108
120
100
Gram
75
72
84
64
84
Seasumum
250
218
216
265
188
Linseed
215
198
116
187
214
Mustard
475
418
420
416
418
Other Oilseeds
252
216
218
284
184
Vegetables
542
518
521
524
510
Other Oilseeds
Vegetables
Dimoria
Other Oilseeds
Vegetables
Chayani Barduar
Other Oilseeds
Vegetables
Boko
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Paddy
3594
3524
3225
3520
3445
Wheat
145
144
118
145
111
Gram
41
40
20
38
18
Seasumum
33
36
24
35
64
Linseed
15
6
4
18
10
Mustard
395
384
385
324
324
2
4
6
6
6
285
216
210
216
208
Paddy
3851
3864
3818
3865
3824
Wheat
1301
1286
1210
1288
1224
40
40
18
36
18
Seasumum
228
218
210
218
216
Linseed
135
198
112
135
124
Mustard
1149
418
1160
1155
1155
61
216
67
73
46
205
212
210
212
416
Paddy
3799
3618
3624
3624
3624
Wheat
510
466
416
467
415
0
0
6
6
6
Seasumum
100
94
68
100
64
Linseed
390
384
318
224
309
Mustard
570
524
548
534
524
Other Oilseeds
498
418
410
484
365
Vegetables
485
466
418
418
416
Paddy
3389
3465
3218
3466
3228
Wheat
160
145
125
147
125
Gram
11
12
24
10
16
Seasumum
34
28
18
24
24
0
6
6
6
6
Bongaon
Other Oilseeds
Vegetables
Chamaria
Gram
Other Oilseeds
Vegetables
Rani
Gram
Rampur
Linseed
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
164
162
160
168
162
41
24
20
31
24
243
218
231
224
224
Paddy
4418
4424
4424
4416
4400
Wheat
193
148
128
144
132
4
6
6
4
6
150
132
122
146
138
Linseed
8
6
0
6
6
Mustard
76
64
66
84
78
Other Oilseeds
23
24
28
24
18
219
200
224
218
202
Paddy
4331
4418
4421
4516
4321
Wheat
64
64
77
64
62
Gram
24
18
14
24
25
Seasumum
24
20
18
22
18
Linseed
40
36
24
36
24
Mustard
77
65
36
32
24
Other Oilseeds
10
10
10
12
24
206
200
200
194
182
Paddy
7750
7721
7624
7318
7724
Wheat
502
518
514
534
524
Gram
121
118
96
88
66
38
44
44
36
40
Linseed
0
0
0
6
6
Mustard
771
716
684
664
597
0
0
6
6
6
1339
1324
1224
1284
1214
Paddy
5691
5684
5518
5425
5324
Wheat
175
164
184
186
184
Mustard
Other Oilseeds
Vegetables
Bezera
Gram
Seasumum
Vegetables
Kamalpur
Vegetables
Rangia
Seasumum
Other Oilseeds
Vegetables
Goreswar
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Gram
20
16
18
24
25
Seasumum
67
66
34
62
38
Linseed
122
110
96
112
96
Mustard
1095
1066
906
1044
1018
30
24
33
24
18
265
248
218
224
216
Paddy
9795
9729
9618
9624
9618
Wheat
79
66
88
80
78
Gram
5
6
8
6
4
Seasumum
68
68
66
54
24
Linseed
75
62
64
64
88
Mustard
308
311
288
224
184
56
46
24
46
34
Vegetables
289
294
300
216
198
Rabi Total
105071
102754
101706
102600
101323
Kamrup Total
215118
208552
207045
207611
205442
Other Oilseeds
Vegetables
Bihdia Jajikona
Other Oilseeds
MORIGAON DISTRICT
Kharif
Mayong
Paddy
11689
11647
11582
11674
11526
Maize
55
50
50
28
38
Arhar
5
6
0
6
4
Sugarcane
115
96
98
100
96
Jute
520
544
518
518
464
10
4
0
0
0
Ground Nut
0
0
4
6
4
Other Pulses
13
18
18
14
24
Paddy
1478
1512
1497
1442
1472
Maize
0
0
0
0
0
Arhar
5
0
0
5
0
685
485
618
598
514
Castor
Moriabari
Sugarcane
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
434
444
388
316
325
0
0
0
0
0
Ground Nut
15
64
48
13
6
Other Pulses
50
24
16
64
78
Paddy
8822
8724
8614
8818
8650
Maize
0
0
0
0
0
Arhar
0
0
2
4
0
194
200
200
196
145
3000
2818
2624
2896
2946
0
0
0
0
0
Ground Nut
160
85
6
132
124
Other Pulses
102
98
96
98
64
Paddy
2412
2502
2294
2399
2404
Maize
0
0
0
0
0
Arhar
10
4
0
5
0
Sugarcane
200
200
184
184
155
Jute
847
844
818
864
818
Castor
0
0
0
0
0
Ground Nut
0
0
6
4
6
Other Pulses
62
64
96
66
65
Paddy
1564
1558
1700
1542
1534
Maize
0
0
0
0
0
Arhar
0
0
0
0
0
46
66
18
38
26
2385
2214
2224
2216
2114
Castor
0
0
0
0
0
Ground Nut
0
0
6
0
0
Other Pulses
324
314
288
284
224
Kharif Total
35202
34585
34013
34530
33826
Jute
Castor
Laharighat
Sugarcane
Jute
Castor
Bhurbandha
Kapili
Sugarcane
Jute
Rabi
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Paddy
19405
19412
19212
19345
19228
Wheat
375
384
285
301
288
Gram
14
18
24
19
24
Seasumum
245
188
214
194
218
Linseed
110
96
96
64
96
Mustard
746
718
718
668
718
Other Oilseeds
430
287
218
221
384
Vegetables
880
864
824
756
886
Paddy
9830
9824
9624
9824
9818
Wheat
382
288
265
214
196
0
0
0
5
6
Seasumum
78
66
68
76
64
Linseed
75
64
78
64
78
Mustard
261
212
244
255
244
0
6
4
6
4
94
98
96
64
95
Paddy
13002
13024
13125
13000
13096
Wheat
351
364
384
324
318
Gram
100
85
86
88
74
Seasumum
180
196
144
132
198
Linseed
72
72
74
78
74
Mustard
331
324
324
318
324
46
46
84
18
64
300
218
210
288
304
Paddy
13822
13816
13616
13814
13800
Wheat
194
165
200
144
164
0
0
0
0
0
379
410
318
404
384
95
94
98
78
92
Mayong
Moriabari
Gram
Other Oilseeds
Vegetables
Laharighat
Other Oilseeds
Vegetables
Bhurbandha
Gram
Seasumum
Linseed
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
578
516
566
578
518
0
0
0
0
0
95
84
86
100
65
Paddy
3037
3024
3038
3024
3014
Wheat
104
98
78
105
96
0
0
0
2
12
38
24
64
88
44
Linseed
0
6
16
18
4
Mustard
817
864
812
810
796
0
0
0
0
0
Vegetables
145
128
126
136
135
Rabi Total
66611
66083
65419
65623
65923
Morigaon Total
101813
100668
99432
100153
99749
Grand Total
316931
309220
306477
307764
305191
Mustard
Other Oilseeds
Vegetables
Kapili
Gram
Seasumum
Other Oilseeds
3.1.5
Livestock Population
The livestock population of Kamrup and Morigaon districts is given in table below:
3.5 Livestock Population details
Particulars
Cattle
Kamrup
Morigaon
610748
146951
13167
4729
Goats
241659
63952
Pigs
164919
8544
Poultry
1465574
357188
Total
2496067
581364
Buffaloes
(Source: Statistics deptt, Assamand Animal Husbandry Department,)
3.1.6
Industries
3.1.6.1 Rice Mills:
10 MW Biomass Based Power Plant
ABEIL
There are around 5 Rice mills in the Kamrup district and 3 rice mills in Morigaon district as per
rice mill association, but as per survey it is revealed that there are more no. of small capacity
hullers in Kamrup and Morigaon district. The rice mills are milling the paddy coming from the
district and nearby area. The rice mills are generating rice husk and rice bran.
S.N.
Name of Rice Mill
Kamrup
1
Sharma Rice Mill
2
Sri Laxmi Rice Mill
3
Sagar Rice Mill
4
Surana Industries
5
Dhaemashwari Rice Mill
Morigaon
1
Anand Rice Mill
2
Manhat Rice Mill
3
Sunil Rice Mill
3.1.6.2 Saw Mills:
There are around 47 Sawmills in the Kamrup district and 13 sawmills in Morigaon district.
These sawmills are getting wood from the near by villages. The main species are Babool,
seasum, khejedi etc. The saw mills are generating wood chips and saw dust.
3.2
BIOMASS POWER PLANT LOCATION DETAILS
Biomass assessment was carried out in full Kamrup and Morigaon district. For study, blocks
falling in Kamrup and Morigaon districts are considered.
3.2.1
Demographic Features
Circle wise population, households for Kamrup and Morigaon districts are given below.
3.6 Demographic Features
Circle Name
Household
Kamrup District
Population
10 MW Biomass Based Power Plant
Circle Name
ABEIL
Household
Population
Goreswar
30770
172576
Rangia
32205
180976
Kamalpur
26900
152720
Hajo
38796
224381
Chhaygaon
36463
209740
Chamaria
16147
99919
Nagarbera
10743
61514
Boko
18628
99935
Palasbari
49963
266926
Guwahati
184454
809895
12417
65813
3067
16140
23049
124043
7138
37746
North Guwahati
Dispur
Sonapur
Chandrapur
Morigaon District
Mayong
34752
203641
Bhuragaon
16556
106140
Laharighat
29742
183420
Marigaon
30762
164835
Mikirbheta
21646
118220
Mayong
34752
203641
Bhuragaon
16556
106140
Chandgad
34907
180781
(Source: As per 2001 census)
10 MW Biomass Based Power Plant
3.2.2
ABEIL
Cropping Pattern:
The season wise & crop wise cropping pattern for five years for the blocks covered within the
Kamrup and Morigaon district are given below.
3.2.3
Block wise Cropping pattern in hectares
The main crops grown in the districts are Wheat, Paddy, Jute, Mustard etc.
3.7 Cropping pattern (Area in Ha)
Season
2004-05
2003-04
2002-03
2001-02
2000-01
Kamrup District
Kharif
110047
105798
105339
105011
104119
Rabi
105071
102754
101706
102600
101323
Total
215118
208552
207045
207611
205442
Morigaon District
Kharif
35202
34585
34013
34530
33826
Rabi
66611
66083
65419
65623
65923
Total
101813
100668
99432
100153
99749
Grand Total
316931
309220
306477
307764
305191
3.8 Cropped Area Kharif & Rabi Seasons (Area in Ha)
Crop Name
2004-05
2003-04
2002-03
2001-02
2000-01
Kamrup District
Kharif
Sualkuchi
Paddy
4498
4424
4449
4432
4426
Maize
13
10
20
11
30
Arhar
13
13
16
14
16
Sugarcane
91
90
100
64
100
576
518
522
524
466
Castor
5
6
4
6
4
Ground Nut
7
6
4
4
6
515
524
465
518
418
Jute
Other Pulses
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Paddy
14264
13864
13850
13871
13876
Maize
30
26
18
28
24
Arhar
20
24
20
20
18
Sugarcane
42
43
28
44
28
700
614
612
612
614
Castor
4
0
0
0
0
Ground Nut
0
0
0
0
0
877
866
818
814
820
Paddy
2865
2880
2880
2887
2866
Maize
30
23
16
26
10
Arhar
80
84
88
88
66
Sugarcane
43
42
44
24
42
220
224
218
218
224
Castor
0
0
0
0
0
Ground Nut
0
0
0
0
0
Other Pulses
38
44
66
43
64
Paddy
2850
2726
2706
2733
2720
Maize
110
110
98
115
101
Arhar
10
10
4
6
0
Sugarcane
35
36
60
38
36
Jute
75
78
66
79
60
Castor
0
0
0
0
0
Ground Nut
5
5
0
0
0
165
174
132
124
144
Paddy
1188
1165
1121
1170
1102
Maize
0
6
4
4
6
Arhar
0
4
6
6
4
Sugarcane
2
6
4
4
4
Jute
2
14
24
19
25
Hajo
Jute
Other Pulses
Goroimari
Jute
Chhaygaon
Other Pulses
Chandrapur
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Castor
0
0
0
0
0
Ground Nut
0
0
2
6
0
Other Pulses
30
24
22
25
30
Paddy
4300
4303
4308
4308
4246
Maize
5
18
24
20
28
Arhar
50
50
53
48
52
Sugarcane
20
25
20
24
54
100
96
100
94
100
2
2
0
4
0
Ground Nut
27
14
10
14
0
Other Pulses
200
184
164
188
124
Paddy
1732
1602
1542
1610
1542
Maize
9
24
24
25
28
Arhar
10
10
24
10
18
Sugarcane
92
94
68
84
72
679
681
694
618
624
Castor
0
0
0
0
0
Ground Nut
0
0
0
0
0
213
216
210
212
218
Paddy
4604
4536
4549
4557
4536
Maize
225
184
178
188
166
Arhar
55
56
84
52
52
Sugarcane
450
418
416
398
244
Jute
330
318
368
324
366
Castor
550
485
418
386
618
Ground Nut
170
136
0
144
0
Other Pulses
635
624
624
618
618
Paddy
2738
2676
2694
2692
2690
Maize
45
36
24
38
29
Dimoria
Jute
Castor
Chayani Barduar
Jute
Other Pulses
Boko
Bongaon
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Arhar
35
24
20
18
18
Sugarcane
50
54
52
64
52
Jute
360
324
320
318
318
Castor
112
110
100
114
66
0
0
128
0
100
114
115
109
96
110
Paddy
15646
12846
12878
12856
12850
Maize
2
4
6
4
6
Arhar
578
518
521
524
518
79
64
54
84
84
1753
1724
1718
1801
1724
Castor
2
2
4
4
0
Ground Nut
2
0
0
0
0
638
624
610
618
624
Paddy
4200
4276
4242
4282
4290
Maize
0
16
18
18
16
Arhar
240
216
276
6
281
Sugarcane
360
316
300
384
278
Jute
500
561
518
484
529
Castor
140
121
118
111
168
Ground Nut
410
384
274
285
124
Other Pulses
200
196
124
184
110
Paddy
2006
2086
2078
2087
2061
Maize
10
24
28
26
24
Arhar
10
24
18
20
6
Sugarcane
111
98
66
121
110
Jute
239
134
146
125
145
Castor
1
2
6
4
6
Ground Nut
0
0
0
19
0
226
218
210
224
188
Ground Nut
Other Pulses
Chamaria
Sugarcane
Jute
Other Pulses
Rani
Rampur
Other Pulses
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Paddy
3216
3161
3208
3106
3135
Maize
6
4
4
4
4
Arhar
12
14
14
16
10
Sugarcane
21
20
78
22
38
Jute
25
16
28
34
24
4
2
0
0
0
Ground Nut
50
48
50
42
41
Other Pulses
250
264
288
216
262
Paddy
1330
1359
1284
1358
1327
Maize
2
2
4
0
0
Arhar
2
0
6
0
4
Sugarcane
9
0
20
12
18
Jute
5
5
6
0
6
Castor
0
0
0
0
0
Ground Nut
12
16
6
6
4
Other Pulses
211
178
194
178
176
Paddy
13540
13574
13549
13406
13336
Maize
303
222
324
284
218
Arhar
14
0
10
12
19
Sugarcane
68
66
16
63
64
Jute
29
24
34
24
33
Castor
0
0
0
0
0
Ground Nut
0
0
0
28
20
338
324
324
316
324
Paddy
11265
11229
11333
11306
11238
Maize
24
18
16
18
6
Arhar
29
34
24
18
25
Sugarcane
161
144
121
138
24
Jute
547
524
484
366
318
Bezera
Castor
Kamalpur
Rangia
Other Pulses
Goreswar
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
0
0
0
0
0
Ground Nut
29
34
24
18
20
Other Pulses
103
112
111
98
112
Paddy
2789
2858
2810
2870
2808
Maize
7
6
6
6
6
Arhar
18
6
6
4
16
Sugarcane
98
100
96
100
94
126
133
122
111
96
6
1
0
0
0
Ground Nut
25
24
18
6
0
Other Pulses
705
724
696
711
712
Kharif Total
110047
105798
105339
105011
104119
Paddy
4206
4316
4424
4324
4428
Wheat
679
684
618
685
624
Gram
14
18
24
21
20
Seasumum
54
62
64
56
66
Linseed
48
44
48
68
66
Mustard
503
524
516
505
418
5
6
4
6
6
742
718
721
724
718
Paddy
5526
5418
5424
5420
5426
Wheat
670
618
624
621
628
Gram
22
20
18
22
10
177
170
138
179
166
Linseed
81
88
66
78
88
Mustard
721
524
710
718
716
0
0
2
6
2
405
444
418
414
424
Castor
Bihdia Jajikona
Jute
Castor
Rabi
Sualkuchi
Other Oilseeds
Vegetables
Hajo
Seasumum
Other Oilseeds
Vegetables
Goroimari
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Paddy
4370
4416
4524
4420
4518
Wheat
355
324
316
327
316
Gram
15
16
16
18
10
Seasumum
30
34
30
40
28
Linseed
81
24
22
40
24
Mustard
127
120
118
124
124
0
0
0
0
0
290
224
216
228
216
Paddy
4197
4124
4135
4125
4128
Wheat
210
210
208
214
210
Gram
10
10
10
13
10
6
2
6
6
6
Linseed
55
56
28
56
52
Mustard
90
94
98
98
68
Other Oilseeds
75
78
66
84
73
450
418
481
424
478
Paddy
1100
1124
1126
1128
1196
Wheat
30
36
24
38
34
Gram
0
6
4
6
2
Seasumum
0
0
0
0
6
Linseed
10
6
4
15
10
Mustard
30
32
18
24
24
2
4
4
6
4
200
200
184
202
180
Paddy
4667
4614
4630
4624
4587
Wheat
122
118
120
120
118
Gram
50
44
24
42
22
Seasumum
50
44
42
52
54
Linseed
5
5
0
6
6
Mustard
105
113
110
115
110
Other Oilseeds
Vegetables
Chhaygaon
Seasumum
Vegetables
Chandrapur
Other Oilseeds
Vegetables
Dimoria
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
25
26
20
28
26
1200
1200
1212
1211
1210
Paddy
4823
4618
4624
4620
4416
Wheat
181
196
184
199
186
Gram
19
20
20
18
18
Seasumum
32
34
30
24
24
Linseed
0
2
0
6
2
Mustard
179
184
188
188
168
49
52
64
56
10
200
224
218
218
210
Paddy
5369
5218
5220
5220
5210
Wheat
198
118
108
120
100
Gram
75
72
84
64
84
Seasumum
250
218
216
265
188
Linseed
215
198
116
187
214
Mustard
475
418
420
416
418
Other Oilseeds
252
216
218
284
184
Vegetables
542
518
521
524
510
Paddy
3594
3524
3225
3520
3445
Wheat
145
144
118
145
111
Gram
41
40
20
38
18
Seasumum
33
36
24
35
64
Linseed
15
6
4
18
10
Mustard
395
384
385
324
324
2
4
6
6
6
285
216
210
216
208
Paddy
3851
3864
3818
3865
3824
Wheat
1301
1286
1210
1288
1224
40
40
18
36
18
Other Oilseeds
Vegetables
Chayani Barduar
Other Oilseeds
Vegetables
Boko
Bongaon
Other Oilseeds
Vegetables
Chamaria
Gram
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Seasumum
228
218
210
218
216
Linseed
135
198
112
135
124
Mustard
1149
418
1160
1155
1155
61
216
67
73
46
205
212
210
212
416
Paddy
3799
3618
3624
3624
3624
Wheat
510
466
416
467
415
0
0
6
6
6
Seasumum
100
94
68
100
64
Linseed
390
384
318
224
309
Mustard
570
524
548
534
524
Other Oilseeds
498
418
410
484
365
Vegetables
485
466
418
418
416
Paddy
3389
3465
3218
3466
3228
Wheat
160
145
125
147
125
Gram
11
12
24
10
16
Seasumum
34
28
18
24
24
Linseed
0
6
6
6
6
Mustard
164
162
160
168
162
41
24
20
31
24
243
218
231
224
224
Paddy
4418
4424
4424
4416
4400
Wheat
193
148
128
144
132
4
6
6
4
6
150
132
122
146
138
Linseed
8
6
0
6
6
Mustard
76
64
66
84
78
Other Oilseeds
23
24
28
24
18
219
200
224
218
202
Other Oilseeds
Vegetables
Rani
Gram
Rampur
Other Oilseeds
Vegetables
Bezera
Gram
Seasumum
Vegetables
Kamalpur
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Paddy
4331
4418
4421
4516
4321
Wheat
64
64
77
64
62
Gram
24
18
14
24
25
Seasumum
24
20
18
22
18
Linseed
40
36
24
36
24
Mustard
77
65
36
32
24
Other Oilseeds
10
10
10
12
24
206
200
200
194
182
Paddy
7750
7721
7624
7318
7724
Wheat
502
518
514
534
524
Gram
121
118
96
88
66
38
44
44
36
40
Linseed
0
0
0
6
6
Mustard
771
716
684
664
597
0
0
6
6
6
1339
1324
1224
1284
1214
Paddy
5691
5684
5518
5425
5324
Wheat
175
164
184
186
184
Gram
20
16
18
24
25
Seasumum
67
66
34
62
38
Linseed
122
110
96
112
96
Mustard
1095
1066
906
1044
1018
30
24
33
24
18
265
248
218
224
216
Paddy
9795
9729
9618
9624
9618
Wheat
79
66
88
80
78
Gram
5
6
8
6
4
Seasumum
68
68
66
54
24
Linseed
75
62
64
64
88
Mustard
308
311
288
224
184
Vegetables
Rangia
Seasumum
Other Oilseeds
Vegetables
Goreswar
Other Oilseeds
Vegetables
Bihdia Jajikona
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
56
46
24
46
34
Vegetables
289
294
300
216
198
Rabi Total
105071
102754
101706
102600
101323
Kamrup Total
215118
208552
207045
207611
205442
Other Oilseeds
Morigaon District
Kharif
Mayong
Paddy
11689
11647
11582
11674
11526
Maize
55
50
50
28
38
Arhar
5
6
0
6
4
Sugarcane
115
96
98
100
96
Jute
520
544
518
518
464
10
4
0
0
0
Ground Nut
0
0
4
6
4
Other Pulses
13
18
18
14
24
Paddy
1478
1512
1497
1442
1472
Maize
0
0
0
0
0
Arhar
5
0
0
5
0
Sugarcane
685
485
618
598
514
Jute
434
444
388
316
325
0
0
0
0
0
Ground Nut
15
64
48
13
6
Other Pulses
50
24
16
64
78
Paddy
8822
8724
8614
8818
8650
Maize
0
0
0
0
0
Arhar
0
0
2
4
0
194
200
200
196
145
3000
2818
2624
2896
2946
0
0
0
0
0
Ground Nut
160
85
6
132
124
Other Pulses
102
98
96
98
64
Castor
Moriabari
Castor
Laharighat
Sugarcane
Jute
Castor
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Paddy
2412
2502
2294
2399
2404
Maize
0
0
0
0
0
Arhar
10
4
0
5
0
Sugarcane
200
200
184
184
155
Jute
847
844
818
864
818
Castor
0
0
0
0
0
Ground Nut
0
0
6
4
6
Other Pulses
62
64
96
66
65
Paddy
1564
1558
1700
1542
1534
Maize
0
0
0
0
0
Arhar
0
0
0
0
0
46
66
18
38
26
2385
2214
2224
2216
2114
Castor
0
0
0
0
0
Ground Nut
0
0
6
0
0
Other Pulses
324
314
288
284
224
Kharif Total
35202
34585
34013
34530
33826
Paddy
19405
19412
19212
19345
19228
Wheat
375
384
285
301
288
Gram
14
18
24
19
24
Seasumum
245
188
214
194
218
Linseed
110
96
96
64
96
Mustard
746
718
718
668
718
Other Oilseeds
430
287
218
221
384
Vegetables
880
864
824
756
886
Paddy
9830
9824
9624
9824
9818
Wheat
382
288
265
214
196
0
0
0
5
6
Bhurbandha
Kapili
Sugarcane
Jute
Rabi
Mayong
Moriabari
Gram
10 MW Biomass Based Power Plant
Crop Name
ABEIL
2004-05
2003-04
2002-03
2001-02
2000-01
Seasumum
78
66
68
76
64
Linseed
75
64
78
64
78
Mustard
261
212
244
255
244
0
6
4
6
4
94
98
96
64
95
Paddy
13002
13024
13125
13000
13096
Wheat
351
364
384
324
318
Gram
100
85
86
88
74
Seasumum
180
196
144
132
198
Linseed
72
72
74
78
74
Mustard
331
324
324
318
324
46
46
84
18
64
300
218
210
288
304
Paddy
13822
13816
13616
13814
13800
Wheat
194
165
200
144
164
0
0
0
0
0
379
410
318
404
384
Linseed
95
94
98
78
92
Mustard
578
516
566
578
518
0
0
0
0
0
95
84
86
100
65
Paddy
3037
3024
3038
3024
3014
Wheat
104
98
78
105
96
0
0
0
2
12
38
24
64
88
44
Linseed
0
6
16
18
4
Mustard
817
864
812
810
796
0
0
0
0
0
Vegetables
145
128
126
136
135
Rabi Total
66611
66083
65419
65623
65923
Other Oilseeds
Vegetables
Laharighat
Other Oilseeds
Vegetables
Bhurbandha
Gram
Seasumum
Other Oilseeds
Vegetables
Kapili
Gram
Seasumum
Other Oilseeds
10 MW Biomass Based Power Plant
ABEIL
Crop Name
2004-05
2003-04
2002-03
2001-02
2000-01
Morigaon Total
101813
100668
99432
100153
99749
Grand Total
316931
309220
306477
307764
305191
3.2.4
Livestock Population
The livestock population of Kamrup and Morigaon districts is given in table below:
3.9 Livestock Population details
Particulars
Cattle
Kamrup
Morigaon
610748
146951
13167
4729
Goats
241659
63952
Pigs
164919
8544
Poultry
1465574
357188
Total
2496067
581364
Buffaloes
(Source: Statistics deptt, Assamand Animal Husbandry Department,)
3.2.5
Industries
3.2.5.1 Rice Mills:
There are around 5 Rice mills in the Kamrup district and 3 rice mills in Morigaon district as per
rice mill association, but as per survey it is revealed that there are more no. of small capacity
hullers in Kamrup and Morigaon district. The rice mills are milling the paddy coming from the
district and nearby area. The rice mills are generating rice husk and rice bran.
S.N.
Name of Rice Mill
Kamrup District
1
Sharma Rice Mill
2
Sri Laxmi Rice Mill
3
Sagar Rice Mill
4
Surana Industries
5
Dhaemashwari Rice Mill
Morigaon District
10 MW Biomass Based Power Plant
ABEIL
S.N.
Name of Rice Mill
1
Anand Rice Mill
2
Manhat Rice Mill
3
Sunil Rice Mill
3.2.5.2 Saw Mills:
There are around 47 Sawmills in the Kamrup district and 13 sawmills in Morigaon district.
These sawmills are getting wood from the near by villages. The main species are Babool,
seasum, khejedi etc. The saw mills are generating wood chips and saw dust.
3.3
FINDING FROM HOUSEHOLD SURVEY
To arrive consumption around 60 households in each blocks from the surrounding villages of
the power plant site for survey. The survey finding is given in the table below.
3.10 Findings from Household survey
Category
Min
Size of the Family
Agriculture Land Owned (ha)
Max
Avg.
% HH
2
13
6
0.4
42
9
46.16
Cooking/Heating Devices Used (Hours/Day)
Chulha
1
9
4
79.10
Mud Stove
2
2
2
11.79
Kerosene Stove
1
3
2
17.69
Gas Stove
1
6
3
78.97
Electrical Stove
3
4
4
5.90
Kerosene Lamp
1
4
2
26.52
Gas Lamp
1
4
3
9.79
Electric Lamp
3
18
11
97.55
Other Lamps
1
2
1
23.14
2
8
2.6
68.88
Lighting Devices Used (Hours/Day)
Type Of Fuel (Kg/Day)
Fuel Wood
10 MW Biomass Based Power Plant
Category
Crop Residue
ABEIL
Min
Max
Avg.
% HH
0.5
3
1
21.03
Dung Cake
3
20
11
23.24
Kerosene (Lit/Month)
2
6
4
38.97
LPG (Cylinders/Month)
0.5
1.5
0.9
72.63
Electricity (kWh/Two Month)
152
175
162
95.00
Paddy Straw
1.17
1.96
1.86
Wheat Straw
1.27
1.93
1.79
Maize Stalk
2.16
2.86
2.35
Crop Yield (Tons/Hectare)
3.4
Biomass Generation
The major sources of biomass generation are from Crop residues, wastelands and forestry,
and Agro industry residues. Biomass is categorized into suitable for fodder and also not
suitable for fodder. Enough care has been taken to not to use the fodder material for power
plant.
3.5
Crop Residues
Extensive survey was carried out to establish the yields and crop residue ratios. This
information is gathered from the village heads, and literature. Estimates were made based on
the field data and agriculture department data.
The biomass generated is classified into the biomass suitable for fodder and also for burning.
Biomass generated was estimated on the average values of yields and crop residue ratios.
Block wise biomass Generation for season wise is given in the following table.
10 MW Biomass Based Power Plant
ABEIL
3.11 Block wise Crop residue generation
Crop Name
Area
(ha)
Yield
(T/ha)
Production
(Tons)
Residue Type
CRR
Generation
(Tons)
KAMRUP DISTRICT
Sualkuchi
Kharif
Paddy
4498
1.69
7601.62
Straw
1.33
10110.15
Maize
13
0.73
9.49
Stalks
1.86
17.65
Cobs
0.3
2.85
Stalks
1.03
7.90
Tops & Leaves
0.06
209.83
Trash
0.04
139.89
Arhar
13
0.59
7.67
Sugarcane
91
38.43
3497.13
Jute
576
1.87
1077.12
Stalks
1.83
1971.13
Castor
5
0.89
4.45
Stalks
1.23
5.47
Ground Nut
7
1.03
7.21
Stalks
1.78
12.83
515
0.53
272.95
Stalks
1.01
275.68
Paddy
4206
1.63
6855.78
Straw
1.31
8981.07
Wheat
679
1.03
699.37
Straw
1.36
951.14
Gram
14
0.56
7.84
Stalks
1.02
8.00
Seasumum
54
0.59
31.86
Stalks
1.51
48.11
Linseed
48
0.48
23.04
Stalks
1.43
32.95
Mustard
503
1.01
508.03
Stalks
1.61
817.93
5
0.53
2.65
Stalks
1.42
3.76
742
1.46
1083.32
Straw
1
1083.32
Other Pulses
Rabi
Other Oilseeds
Vegetables
TOTAL
21689.53
24679.66
Hajo
Kharif
Paddy
14264
1.69
24106.16
Straw
1.33
32061.19
Maize
30
0.73
21.90
Stalks
1.86
40.73
Cobs
0.3
6.57
Stalks
1.03
12.15
Tops & Leaves
0.06
96.84
Trash
0.04
64.56
Arhar
20
0.59
11.80
Sugarcane
42
38.43
1614.06
10 MW Biomass Based Power Plant
Crop Name
ABEIL
Area
(ha)
Yield
(T/ha)
Production
(Tons)
Residue Type
CRR
Generation
(Tons)
700
1.87
1309.00
Stalks
1.83
2395.47
Castor
4
0.89
3.56
Stalks
1.23
4.38
Ground Nut
0
1.03
0.00
Stalks
1.78
0.00
877
0.53
464.81
Stalks
1.01
469.46
Paddy
5526
1.63
9007.38
Straw
1.31
11799.67
Wheat
670
1.03
690.10
Straw
1.36
938.54
Gram
22
0.56
12.32
Stalks
1.02
12.57
177
0.59
104.43
Stalks
1.51
157.69
Linseed
81
0.48
38.88
Stalks
1.43
55.60
Mustard
721
1.01
728.21
Stalks
1.61
1172.42
0
0.53
0.00
Stalks
1.42
0.00
405
1.46
591.30
Straw
1
591.30
Jute
Other Pulses
Rabi
Seasumum
Other Oilseeds
Vegetables
TOTAL
38703.91
49879.14
Goroimari
Kharif
Paddy
2865
1.69
4841.85
Straw
1.33
6439.66
Maize
30
0.73
21.90
Stalks
1.86
40.73
Cobs
0.3
6.57
Stalks
1.03
48.62
Tops & Leaves
0.06
99.15
Trash
0.04
66.10
Arhar
80
0.59
47.20
Sugarcane
43
38.43
1652.49
Jute
220
1.87
411.40
Stalks
1.83
752.86
Castor
0
0.89
0.00
Stalks
1.23
0.00
Ground Nut
0
1.03
0.00
Stalks
1.78
0.00
Other Pulses
38
0.53
20.14
Stalks
1.01
20.34
Paddy
4370
1.63
7123.10
Straw
1.31
9331.26
Wheat
355
1.03
365.65
Straw
1.36
497.28
Gram
15
0.56
8.40
Stalks
1.02
8.57
Seasumum
30
0.59
17.70
Stalks
1.51
26.73
Linseed
81
0.48
38.88
Stalks
1.43
55.60
Rabi
10 MW Biomass Based Power Plant
Crop Name
Mustard
Other Oilseeds
Vegetables
ABEIL
Area
(ha)
Yield
(T/ha)
127
1.01
0
290
Residue Type
CRR
128.27
Stalks
1.61
206.51
0.53
0.00
Stalks
1.42
0.00
1.46
423.40
Straw
1
423.40
TOTAL
Production
(Tons)
15100.38
Generation
(Tons)
18023.39
Chhaygaon
Kharif
Paddy
2850
1.69
4816.50
Straw
1.33
6405.95
Maize
110
0.73
80.30
Stalks
1.86
149.36
Cobs
0.3
24.09
Stalks
1.03
6.08
Tops & Leaves
0.06
80.70
Trash
0.04
53.80
Arhar
10
0.59
5.90
Sugarcane
35
38.43
1345.05
Jute
75
1.87
140.25
Stalks
1.83
256.66
Castor
0
0.89
0.00
Stalks
1.23
0.00
Ground Nut
5
1.03
5.15
Stalks
1.78
9.17
165
0.53
87.45
Stalks
1.01
88.32
Paddy
4197
1.63
6841.11
Straw
1.31
8961.85
Wheat
210
1.03
216.30
Straw
1.36
294.17
Gram
10
0.56
5.60
Stalks
1.02
5.71
6
0.59
3.54
Stalks
1.51
5.35
Linseed
55
0.48
26.40
Stalks
1.43
37.75
Mustard
90
1.01
90.90
Stalks
1.61
146.35
Other Oilseeds
75
0.53
39.75
Stalks
1.42
56.45
450
1.46
657.00
Straw
1
657.00
Other Pulses
Rabi
Seasumum
Vegetables
TOTAL
14361.20
17238.75
Chandrapur
Kharif
Paddy
1188
1.69
2007.72
Straw
1.33
2670.27
Maize
0
0.73
0.00
Stalks
1.86
0.00
Cobs
0.3
0.00
Stalks
1.03
0.00
Arhar
0
0.59
0.00
10 MW Biomass Based Power Plant
Crop Name
Sugarcane
ABEIL
Area
(ha)
Yield
(T/ha)
2
38.43
Production
(Tons)
76.86
Residue Type
CRR
Generation
(Tons)
Tops & Leaves
0.06
4.61
Trash
0.04
3.07
Jute
2
1.87
3.74
Stalks
1.83
6.84
Castor
0
0.89
0.00
Stalks
1.23
0.00
Ground Nut
0
1.03
0.00
Stalks
1.78
0.00
Other Pulses
30
0.53
15.90
Stalks
1.01
16.06
Paddy
1100
1.63
1793.00
Straw
1.31
2348.83
Wheat
30
1.03
30.90
Straw
1.36
42.02
Gram
0
0.56
0.00
Stalks
1.02
0.00
Seasumum
0
0.59
0.00
Stalks
1.51
0.00
Linseed
10
0.48
4.80
Stalks
1.43
6.86
Mustard
30
1.01
30.30
Stalks
1.61
48.78
2
0.53
1.06
Stalks
1.42
1.51
200
1.46
292.00
Straw
1
292.00
Rabi
Other Oilseeds
Vegetables
TOTAL
4256.28
5440.86
Dimoria
Kharif
Paddy
4300
1.69
7267.00
Straw
1.33
9665.11
Maize
5
0.73
3.65
Stalks
1.86
6.79
Cobs
0.3
1.10
Stalks
1.03
30.39
Tops & Leaves
0.06
46.12
Trash
0.04
30.74
Arhar
50
0.59
29.50
Sugarcane
20
38.43
768.60
Jute
100
1.87
187.00
Stalks
1.83
342.21
2
0.89
1.78
Stalks
1.23
2.19
Ground Nut
27
1.03
27.81
Stalks
1.78
49.50
Other Pulses
200
0.53
106.00
Stalks
1.01
107.06
Paddy
4667
1.63
7607.21
Straw
1.31
9965.45
Wheat
122
1.03
125.66
Straw
1.36
170.90
Gram
50
0.56
28.00
Stalks
1.02
28.56
Castor
Rabi
10 MW Biomass Based Power Plant
Crop Name
ABEIL
Area
(ha)
Yield
(T/ha)
50
0.59
Linseed
5
Mustard
Seasumum
Other Oilseeds
Vegetables
Residue Type
CRR
29.50
Stalks
1.51
44.55
0.48
2.40
Stalks
1.43
3.43
105
1.01
106.05
Stalks
1.61
170.74
25
0.53
13.25
Stalks
1.42
18.82
1200
1.46
1752.00
Straw
1
1752.00
TOTAL
Production
(Tons)
18055.41
Generation
(Tons)
22435.64
Chayani Barduar
Kharif
Paddy
1732
1.69
2927.08
Straw
1.33
3893.02
Maize
9
0.73
6.57
Stalks
1.86
12.22
Cobs
0.3
1.97
Stalks
1.03
6.08
Tops & Leaves
0.06
212.13
Trash
0.04
141.42
Arhar
10
0.59
5.90
Sugarcane
92
38.43
3535.56
Jute
679
1.87
1269.73
Stalks
1.83
2323.61
Castor
0
0.89
0.00
Stalks
1.23
0.00
Ground Nut
0
1.03
0.00
Stalks
1.78
0.00
213
0.53
112.89
Stalks
1.01
114.02
Paddy
4823
1.63
7861.49
Straw
1.31
10298.55
Wheat
181
1.03
186.43
Straw
1.36
253.54
Gram
19
0.56
10.64
Stalks
1.02
10.85
Seasumum
32
0.59
18.88
Stalks
1.51
28.51
Linseed
0
0.48
0.00
Stalks
1.43
0.00
Mustard
179
1.01
180.79
Stalks
1.61
291.07
49
0.53
25.97
Stalks
1.42
36.88
200
1.46
292.00
Straw
1
292.00
Other Pulses
Rabi
Other Oilseeds
Vegetables
TOTAL
16433.93
17915.87
Boko
Kharif
Paddy
4604
1.69
7780.76
Straw
1.33
10348.41
Maize
225
0.73
164.25
Stalks
1.86
305.51
10 MW Biomass Based Power Plant
Crop Name
Arhar
Sugarcane
Area
(ha)
ABEIL
Yield
(T/ha)
Production
(Tons)
55
0.59
32.45
450
38.43
17293.50
Residue Type
CRR
Generation
(Tons)
Cobs
0.3
49.28
Stalks
1.03
33.42
Tops & Leaves
0.06
1037.61
Trash
0.04
691.74
Jute
330
1.87
617.10
Stalks
1.83
1129.29
Castor
550
0.89
489.50
Stalks
1.23
602.09
Ground Nut
170
1.03
175.10
Stalks
1.78
311.68
Other Pulses
635
0.53
336.55
Stalks
1.01
339.92
Paddy
5369
1.63
8751.47
Straw
1.31
11464.43
Wheat
198
1.03
203.94
Straw
1.36
277.36
Gram
75
0.56
42.00
Stalks
1.02
42.84
Seasumum
250
0.59
147.50
Stalks
1.51
222.73
Linseed
215
0.48
103.20
Stalks
1.43
147.58
Mustard
475
1.01
479.75
Stalks
1.61
772.40
Other Oilseeds
252
0.53
133.56
Stalks
1.42
189.66
Vegetables
542
1.46
791.32
Straw
1
791.32
Rabi
TOTAL
37541.95
28757.23
Bongaon
Kharif
Paddy
2738
1.69
4627.22
Straw
1.33
6154.20
Maize
45
0.73
32.85
Stalks
1.86
61.10
Cobs
0.3
9.86
Stalks
1.03
21.27
Tops & Leaves
0.06
115.29
Trash
0.04
76.86
Arhar
35
0.59
20.65
Sugarcane
50
38.43
1921.50
Jute
360
1.87
673.20
Stalks
1.83
1231.96
Castor
112
0.89
99.68
Stalks
1.23
122.61
0
1.03
0.00
Stalks
1.78
0.00
114
0.53
60.42
Stalks
1.01
61.02
3594
1.63
5858.22
Straw
1.31
7674.27
Ground Nut
Other Pulses
Rabi
Paddy
10 MW Biomass Based Power Plant
Crop Name
ABEIL
Area
(ha)
Yield
(T/ha)
Wheat
145
1.03
Gram
41
Seasumum
Residue Type
CRR
149.35
Straw
1.36
203.12
0.56
22.96
Stalks
1.02
23.42
33
0.59
19.47
Stalks
1.51
29.40
Linseed
15
0.48
7.20
Stalks
1.43
10.30
Mustard
395
1.01
398.95
Stalks
1.61
642.31
2
0.53
1.06
Stalks
1.42
1.51
285
1.46
416.10
Straw
1
416.10
Other Oilseeds
Vegetables
TOTAL
Production
(Tons)
14308.83
Generation
(Tons)
16854.58
Chamaria
Kharif
Paddy
15646
1.69
26441.74
Straw
1.33
35167.51
Maize
2
0.73
1.46
Stalks
1.86
2.72
Cobs
0.3
0.44
Stalks
1.03
351.25
Tops & Leaves
0.06
182.16
Trash
0.04
121.44
Arhar
Sugarcane
Jute
578
0.59
341.02
79
38.43
3035.97
1753
1.87
3278.11
Stalks
1.83
5998.94
Castor
2
0.89
1.78
Stalks
1.23
2.19
Ground Nut
2
1.03
2.06
Stalks
1.78
3.67
638
0.53
338.14
Stalks
1.01
341.52
Paddy
3851
1.63
6277.13
Straw
1.31
8223.04
Wheat
1301
1.03
1340.03
Straw
1.36
1822.44
40
0.56
22.40
Stalks
1.02
22.85
Seasumum
228
0.59
134.52
Stalks
1.51
203.13
Linseed
135
0.48
64.80
Stalks
1.43
92.66
Mustard
1149
1.01
1160.49
Stalks
1.61
1868.39
61
0.53
32.33
Stalks
1.42
45.91
205
1.46
299.30
Straw
1
299.30
Other Pulses
Rabi
Gram
Other Oilseeds
Vegetables
TOTAL
Rani
Kharif
42771.28
54749.55
10 MW Biomass Based Power Plant
Crop Name
ABEIL
Area
(ha)
Yield
(T/ha)
Production
(Tons)
Residue Type
CRR
Generation
(Tons)
Paddy
4200
1.69
7098.00
Straw
1.33
9440.34
Maize
0
0.73
0.00
Stalks
1.86
0.00
Cobs
0.3
0.00
Stalks
1.03
145.85
Tops & Leaves
0.06
830.09
Trash
0.04
553.39
Arhar
240
0.59
141.60
Sugarcane
360
38.43
13834.80
Jute
500
1.87
935.00
Stalks
1.83
1711.05
Castor
140
0.89
124.60
Stalks
1.23
153.26
Ground Nut
410
1.03
422.30
Stalks
1.78
751.69
Other Pulses
200
0.53
106.00
Stalks
1.01
107.06
Paddy
3799
1.63
6192.37
Straw
1.31
8112.00
Wheat
510
1.03
525.30
Straw
1.36
714.41
0
0.56
0.00
Stalks
1.02
0.00
Seasumum
100
0.59
59.00
Stalks
1.51
89.09
Linseed
390
0.48
187.20
Stalks
1.43
267.70
Mustard
570
1.01
575.70
Stalks
1.61
926.88
Other Oilseeds
498
0.53
263.94
Stalks
1.42
374.79
Vegetables
485
1.46
708.10
Straw
1
708.10
Rabi
Gram
TOTAL
31173.91
24885.70
Rampur
Kharif
Paddy
2006
1.69
3390.14
Straw
1.33
4508.89
Maize
10
0.73
7.30
Stalks
1.86
13.58
Cobs
0.3
2.19
Stalks
1.03
6.08
Tops & Leaves
0.06
255.94
Trash
0.04
170.63
Arhar
Sugarcane
Jute
10
0.59
5.90
111
38.43
4265.73
239
1.87
446.93
Stalks
1.83
817.88
Castor
1
0.89
0.89
Stalks
1.23
1.09
Ground Nut
0
1.03
0.00
Stalks
1.78
0.00
226
0.53
119.78
Stalks
1.01
120.98
Other Pulses
10 MW Biomass Based Power Plant
Crop Name
ABEIL
Area
(ha)
Yield
(T/ha)
Production
(Tons)
Residue Type
CRR
Generation
(Tons)
Paddy
3389
1.63
5524.07
Straw
1.31
7236.53
Wheat
160
1.03
164.80
Straw
1.36
224.13
Gram
11
0.56
6.16
Stalks
1.02
6.28
Seasumum
34
0.59
20.06
Stalks
1.51
30.29
Linseed
0
0.48
0.00
Stalks
1.43
0.00
Mustard
164
1.01
165.64
Stalks
1.61
266.68
41
0.53
21.73
Stalks
1.42
30.86
243
1.46
354.78
Straw
1
354.78
Rabi
Other Oilseeds
Vegetables
TOTAL
14493.91
14046.81
Bezera
Kharif
Paddy
3216
1.69
5435.04
Straw
1.33
7228.60
Maize
6
0.73
4.38
Stalks
1.86
8.15
Cobs
0.3
1.31
Stalks
1.03
7.29
Tops & Leaves
0.06
48.42
Trash
0.04
32.28
Arhar
12
0.59
7.08
Sugarcane
21
38.43
807.03
Jute
25
1.87
46.75
Stalks
1.83
85.55
4
0.89
3.56
Stalks
1.23
4.38
Ground Nut
50
1.03
51.50
Stalks
1.78
91.67
Other Pulses
250
0.53
132.50
Stalks
1.01
133.83
Paddy
4418
1.63
7201.34
Straw
1.31
9433.76
Wheat
193
1.03
198.79
Straw
1.36
270.35
4
0.56
2.24
Stalks
1.02
2.28
150
0.59
88.50
Stalks
1.51
133.64
Linseed
8
0.48
3.84
Stalks
1.43
5.49
Mustard
76
1.01
76.76
Stalks
1.61
123.58
Other Oilseeds
23
0.53
12.19
Stalks
1.42
17.31
219
1.46
319.74
Straw
1
319.74
Castor
Rabi
Gram
Seasumum
Vegetables
TOTAL
14391.24
17947.64
10 MW Biomass Based Power Plant
Crop Name
ABEIL
Area
(ha)
Yield
(T/ha)
Production
(Tons)
Residue Type
CRR
Generation
(Tons)
Paddy
1330
1.69
2247.70
Straw
1.33
2989.44
Maize
2
0.73
1.46
Stalks
1.86
2.72
Cobs
0.3
0.44
Stalks
1.03
1.22
Tops & Leaves
0.06
20.75
Trash
0.04
13.83
Kamalpur
Kharif
Arhar
2
0.59
1.18
Sugarcane
9
38.43
345.87
Jute
5
1.87
9.35
Stalks
1.83
17.11
Castor
0
0.89
0.00
Stalks
1.23
0.00
Ground Nut
12
1.03
12.36
Stalks
1.78
22.00
Other Pulses
211
0.53
111.83
Stalks
1.01
112.95
Paddy
4331
1.63
7059.53
Straw
1.31
9247.98
Wheat
64
1.03
65.92
Straw
1.36
89.65
Gram
24
0.56
13.44
Stalks
1.02
13.71
Seasumum
24
0.59
14.16
Stalks
1.51
21.38
Linseed
40
0.48
19.20
Stalks
1.43
27.46
Mustard
77
1.01
77.77
Stalks
1.61
125.21
Other Oilseeds
10
0.53
5.30
Stalks
1.42
7.53
206
1.46
300.76
Straw
1
300.76
Rabi
Vegetables
TOTAL
10285.83
13014.13
Rangia
Kharif
Paddy
13540
1.69
22882.60
Straw
1.33
30433.86
Maize
303
0.73
221.19
Stalks
1.86
411.41
Cobs
0.3
66.36
Stalks
1.03
8.51
Tops & Leaves
0.06
156.79
Trash
0.04
104.53
Arhar
14
0.59
8.26
Sugarcane
68
38.43
2613.24
Jute
Castor
29
1.87
54.23
Stalks
1.83
99.24
0
0.89
0.00
Stalks
1.23
0.00
10 MW Biomass Based Power Plant
Crop Name
ABEIL
Area
(ha)
Yield
(T/ha)
Residue Type
CRR
0
1.03
0.00
Stalks
1.78
0.00
338
0.53
179.14
Stalks
1.01
180.93
Paddy
7750
1.63
12632.50
Straw
1.31
16548.58
Wheat
502
1.03
517.06
Straw
1.36
703.20
Gram
121
0.56
67.76
Stalks
1.02
69.12
38
0.59
22.42
Stalks
1.51
33.85
Linseed
0
0.48
0.00
Stalks
1.43
0.00
Mustard
771
1.01
778.71
Stalks
1.61
1253.72
0
0.53
0.00
Stalks
1.42
0.00
1339
1.46
1954.94
Straw
1
1954.94
Ground Nut
Other Pulses
Production
(Tons)
Generation
(Tons)
Rabi
Seasumum
Other Oilseeds
Vegetables
TOTAL
41932.05
52025.04
Goreswar
Kharif
Paddy
11265
1.69
19037.85
Straw
1.33
25320.34
Maize
24
0.73
17.52
Stalks
1.86
32.59
Cobs
0.3
5.26
Stalks
1.03
17.62
Tops & Leaves
0.06
371.23
Trash
0.04
247.49
Arhar
Sugarcane
Jute
29
0.59
17.11
161
38.43
6187.23
547
1.87
1022.89
Stalks
1.83
1871.89
0
0.89
0.00
Stalks
1.23
0.00
Ground Nut
29
1.03
29.87
Stalks
1.78
53.17
Other Pulses
103
0.53
54.59
Stalks
1.01
55.14
Paddy
5691
1.63
9276.33
Straw
1.31
12151.99
Wheat
175
1.03
180.25
Straw
1.36
245.14
Gram
20
0.56
11.20
Stalks
1.02
11.42
Seasumum
67
0.59
39.53
Stalks
1.51
59.69
Linseed
122
0.48
58.56
Stalks
1.43
83.74
Mustard
1095
1.01
1105.95
Stalks
1.61
1780.58
30
0.53
15.90
Stalks
1.42
22.58
Castor
Rabi
Other Oilseeds
10 MW Biomass Based Power Plant
Crop Name
Vegetables
ABEIL
Area
(ha)
Yield
(T/ha)
265
1.46
TOTAL
Production
(Tons)
386.90
Residue Type
Straw
CRR
1
37441.68
Generation
(Tons)
386.90
42716.77
Bihdia Jajikona
Kharif
Paddy
2789
1.69
4713.41
Straw
1.33
6268.84
Maize
7
0.73
5.11
Stalks
1.86
9.50
Cobs
0.3
1.53
Stalks
1.03
10.94
Tops & Leaves
0.06
225.97
Trash
0.04
150.65
Arhar
18
0.59
10.62
Sugarcane
98
38.43
3766.14
Jute
126
1.87
235.62
Stalks
1.83
431.18
6
0.89
5.34
Stalks
1.23
6.57
Ground Nut
25
1.03
25.75
Stalks
1.78
45.84
Other Pulses
705
0.53
373.65
Stalks
1.01
377.39
Paddy
9795
1.63
15965.85
Straw
1.31
20915.26
Wheat
79
1.03
81.37
Straw
1.36
110.66
Gram
5
0.56
2.80
Stalks
1.02
2.86
Seasumum
68
0.59
40.12
Stalks
1.51
60.58
Linseed
75
0.48
36.00
Stalks
1.43
51.48
Mustard
308
1.01
311.08
Stalks
1.61
500.84
56
0.53
29.68
Stalks
1.42
42.15
289
1.46
421.94
Straw
1
421.94
Castor
Rabi
Other Oilseeds
Vegetables
TOTAL
26024.48
29634.17
MORIGAON DISTRICT
Mayong
Kharif
Paddy
11689
1.69
19754.41
Straw
1.33
26273.37
Maize
55
0.73
40.15
Stalks
1.86
74.68
Cobs
0.3
12.05
Stalks
1.03
3.04
Tops & Leaves
0.06
265.17
Arhar
Sugarcane
5
0.59
2.95
115
38.43
4419.45
10 MW Biomass Based Power Plant
Crop Name
Jute
Area
(ha)
ABEIL
Yield
(T/ha)
Production
(Tons)
Residue Type
CRR
Generation
(Tons)
Trash
0.04
176.78
520
1.87
972.40
Stalks
1.83
1779.49
10
0.89
8.90
Stalks
1.23
10.95
Ground Nut
0
1.03
0.00
Stalks
1.78
0.00
Other Pulses
13
0.53
6.89
Stalks
1.01
6.96
Paddy
19405
1.63
31630.15
Straw
1.31
41435.50
Wheat
375
1.03
386.25
Straw
1.36
525.30
Gram
14
0.56
7.84
Stalks
1.02
8.00
Seasumum
245
0.59
144.55
Stalks
1.51
218.27
Linseed
110
0.48
52.80
Stalks
1.43
75.50
Mustard
746
1.01
753.46
Stalks
1.61
1213.07
Other Oilseeds
430
0.53
227.90
Stalks
1.42
323.62
Vegetables
880
1.46
1284.80
Straw
1
1284.80
Castor
Rabi
TOTAL
59692.90
73686.53
Moriabari
Kharif
Paddy
1478
1.69
2497.82
Straw
1.33
3322.10
Maize
0
0.73
0.00
Stalks
1.86
0.00
Cobs
0.3
0.00
Stalks
1.03
3.04
Tops & Leaves
0.06
1579.47
Trash
0.04
1052.98
Arhar
Sugarcane
Jute
5
0.59
2.95
685
38.43
26324.55
434
1.87
811.58
Stalks
1.83
1485.19
0
0.89
0.00
Stalks
1.23
0.00
Ground Nut
15
1.03
15.45
Stalks
1.78
27.50
Other Pulses
50
0.53
26.50
Stalks
1.01
26.77
Paddy
9830
1.63
16022.90
Straw
1.31
20990.00
Wheat
382
1.03
393.46
Straw
1.36
535.11
0
0.56
0.00
Stalks
1.02
0.00
78
0.59
46.02
Stalks
1.51
69.49
Castor
Rabi
Gram
Seasumum
10 MW Biomass Based Power Plant
Crop Name
ABEIL
Area
(ha)
Yield
(T/ha)
Linseed
75
0.48
Mustard
261
Other Oilseeds
Vegetables
Residue Type
CRR
36.00
Stalks
1.43
51.48
1.01
263.61
Stalks
1.61
424.41
0
0.53
0.00
Stalks
1.42
0.00
94
1.46
137.24
Straw
1
137.24
TOTAL
Production
(Tons)
46578.08
Generation
(Tons)
29704.78
Laharighat
Kharif
Paddy
8822
1.69
14909.18
Straw
1.33
19829.21
Maize
0
0.73
0.00
Stalks
1.86
0.00
Cobs
0.3
0.00
Stalks
1.03
0.00
Tops & Leaves
0.06
447.33
Trash
0.04
298.22
Arhar
Sugarcane
Jute
0
0.59
0.00
194
38.43
7455.42
3000
1.87
5610.00
Stalks
1.83
10266.30
0
0.89
0.00
Stalks
1.23
0.00
Ground Nut
160
1.03
164.80
Stalks
1.78
293.34
Other Pulses
102
0.53
54.06
Stalks
1.01
54.60
Paddy
13002
1.63
21193.26
Straw
1.31
27763.17
Wheat
351
1.03
361.53
Straw
1.36
491.68
Gram
100
0.56
56.00
Stalks
1.02
57.12
Seasumum
180
0.59
106.20
Stalks
1.51
160.36
Linseed
72
0.48
34.56
Stalks
1.43
49.42
Mustard
331
1.01
334.31
Stalks
1.61
538.24
46
0.53
24.38
Stalks
1.42
34.62
300
1.46
438.00
Straw
1
438.00
Castor
Rabi
Other Oilseeds
Vegetables
TOTAL
50741.70
60721.61
Bhurbandha
Kharif
Paddy
2412
1.69
4076.28
Straw
1.33
5421.45
Maize
0
0.73
0.00
Stalks
1.86
0.00
Cobs
0.3
0.00
10 MW Biomass Based Power Plant
Crop Name
Arhar
Sugarcane
Jute
ABEIL
Area
(ha)
Yield
(T/ha)
Production
(Tons)
10
0.59
5.90
200
38.43
7686.00
Residue Type
CRR
Generation
(Tons)
Stalks
1.03
6.08
Tops & Leaves
0.06
461.16
Trash
0.04
307.44
847
1.87
1583.89
Stalks
1.83
2898.52
Castor
0
0.89
0.00
Stalks
1.23
0.00
Ground Nut
0
1.03
0.00
Stalks
1.78
0.00
Other Pulses
62
0.53
32.86
Stalks
1.01
33.19
Paddy
13822
1.63
22529.86
Straw
1.31
29514.12
Wheat
194
1.03
199.82
Straw
1.36
271.76
0
0.56
0.00
Stalks
1.02
0.00
379
0.59
223.61
Stalks
1.51
337.65
Linseed
95
0.48
45.60
Stalks
1.43
65.21
Mustard
578
1.01
583.78
Stalks
1.61
939.89
0
0.53
0.00
Stalks
1.42
0.00
95
1.46
138.70
Straw
1
138.70
Rabi
Gram
Seasumum
Other Oilseeds
Vegetables
TOTAL
37106.30
40395.15
Kapili
Kharif
Paddy
1564
1.69
2643.16
Straw
1.33
3515.40
Maize
0
0.73
0.00
Stalks
1.86
0.00
Cobs
0.3
0.00
Stalks
1.03
0.00
Tops & Leaves
0.06
106.07
Trash
0.04
70.71
Arhar
Sugarcane
Jute
0
0.59
0.00
46
38.43
1767.78
2385
1.87
4459.95
Stalks
1.83
8161.71
Castor
0
0.89
0.00
Stalks
1.23
0.00
Ground Nut
0
1.03
0.00
Stalks
1.78
0.00
324
0.53
171.72
Stalks
1.01
173.44
Paddy
3037
1.63
4950.31
Straw
1.31
6484.91
Wheat
104
1.03
107.12
Straw
1.36
145.68
Other Pulses
Rabi
10 MW Biomass Based Power Plant
Crop Name
ABEIL
Area
(ha)
Yield
(T/ha)
Residue Type
CRR
0
0.56
0.00
Stalks
1.02
0.00
38
0.59
22.42
Stalks
1.51
33.85
Linseed
0
0.48
0.00
Stalks
1.43
0.00
Mustard
817
1.01
825.17
Stalks
1.61
1328.52
0
0.53
0.00
Stalks
1.42
0.00
145
1.46
211.70
Straw
1
211.70
Gram
Seasumum
Other Oilseeds
Vegetables
Production
(Tons)
TOTAL
15159.33
Generation
(Tons)
20231.99
3.12 Summary of District wise Crop residue generation in tons
District
Rabi
Total
Kamrup
244391.05
205853.89
450244.93
Morigaon
88443.68
136296.38
224740.06
332834.73
342150.27
674984.99
Grand total
3.4.2
Kharif
Biomass from Forest and Other Waste Lands
Besides the State forest there are other areas, which include waste lands in the district.
Interaction with the farmers, during the survey revealed that the annual sustainable
productivity of the forest land in the district is 1.5 MT/year and wastelands, which includes
barren uncultivatable, permanent pasture and grazing land are 0.8 MT/year.
Biomass from wastelands is calculated through multiplying the total area under barren
uncultivable, permanent pasture and grazing land by the average annual sustainable
productivity of wastelands. The following table indicates the area and biomass generated from
forest and other lands in the district.
3.13 Biomass generation from forest & other land sources in tons
District
Forest land
Other Waste lands
Total
Kamrup
175041
57211
232252
Morigaon
26439
14904
41343
201480
72115
273595
Grand Total
10 MW Biomass Based Power Plant
3.4.3
ABEIL
Agro Industry Residues
Major Agro industrial residues available within district are rice husk, rice bran, wood chips, saw
dust etc.
3.14 District wise biomass generation from Industries in tons
Particulars
Kamrup
Morigaon
TOTAL
Rice Mills
Husk
63591
30846
94437
Bran
14453
7010
21463
2115
585
2700
423
117
540
Saw Mills
Wood chips
Saw dust
3.4.4
Summary of Biomass Generation from all Sources
Biomass from crop residues, agro industries mainly from rice mills, and forest and wastelands
is estimated and given below:
3.15 District wise biomass generation from all sources in tons
Districts
Crop Residue
Forest &
other lands
AgroIndustry
Total
Kamrup
450244.93
232252
80582
763079
Morigaon
224740.06
41343
38558
304641
Grand total
674984.99
273595
119140
1067720
Total biomass generation in the both districts is 674984.99 tons of crop residue, 273595 tons
of wood and 119140 tons of agro industrial residue which includes bagasse, rice husk, wood
chips etc. The total biomass generation from all sources is 1067720.
3.5
Biomass Consumption
The major areas of biomass consumption are for domestic fuel, fodder and small hotels etc.
As per the survey, the average consumption of woody biomass consumed per household per
annum is around 50-70 kgs in the both districts.
10 MW Biomass Based Power Plant
3.5.1
ABEIL
Domestic Fuel Consumption
This area is developed one and the purchasing capacity is much higher. Slowly domestic fuel
is being shifted from the wood, dung cakes to LPG. The wood and crop residue consumption
is considered on an average basis as 50-70 Kgs and 26-44 kgs per annum per person in
Kamrup and Morigaon district respectively. This figure is arrived based on the household
survey carried out in 60 households in selected village of each blocks.
In every block one or two village was selected for household survey, for domestic and fodder
consumptions and other miscellaneous purposes.
Domestic fuel requirement in the district given below:
3.16 District wise Domestic fuel consumption in tons
Districts
Domestic Fuel (Tons)
Wood
Total
Kamrup
112987
41958.80
154945.80
Morigaon
33222
32680.10
65902.10
146209.00
74638.90
220847.90
Total
3.5.2
Crop Residue
Fodder Consumption
In this area cattle also sent for grazing. On an average, the consumption of fodder is around
4-6 kg/day per cattle.
3.17 District wise Fodder consumption in tons
Districts
Fodder Consumption
Rice Bran
Total
Kamrup
403488.80
14453
417941.80
Morigaon
189989.67
7010
196999.67
Grand total
593478.47
21463
614941.47
10 MW Biomass Based Power Plant
3.5.3
ABEIL
Industrial Fuel Consumption
The following table gives the details of consumption of biomass in industrial sector within
Kamrup and Morigaon districts.
3.18 District wise Industrial Biomass consumption in tons
District
Saw mill Brick Kilns, Poultry farms, Hotels
Wood
Rice Husk Wood chips Saw dust
Kamrup
8460
33067
2115
423
44065
Morigaon
2340
16040
585
117
19082
10800
49107
2700
540
63147
Grand total
3.5.4
Total
Summary of Biomass Consumption
The following table gives the summary of biomass consumption in different sectors within the
district.
3.19 Summary of Biomass consumption in tons
District
Domestic
Fodder
Kamrup
154945.80
417941.80
44065
616952.60
Morigaon
65902.10
196999.67
19082
281983.77
220847.90
614941.47
63147
898936.37
Grand total
3.6
Industry
Total
Biomass Surplus
After estimating the biomass generation from the possible sources, and estimating the
consumption of biomass as fodder and also for domestic fuel, which contributes the major
consumption, the other consumptions namely for saw mills etc can be accounted in the wood,
portion, the net biomass surplus available from each block of district are given below:
3.6.1
Block wise Crop Residue Balance
The following table gives the details of surplus biomass from different sources within the
district.
10 MW Biomass Based Power Plant
ABEIL
3.20 Block wise crop residue balance in tons
Crop Name
Residue Type
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
KAMRUP DISTRICT
Sualkuchi
Kharif
Paddy
Straw
10110.15
9806.85
303.30
0.00
0.00
Maize
Stalks
17.65
17.65
0.00
0.00
0.00
Cobs
2.85
0.00
0.00
2.85
0.00
Arhar
Stalks
7.90
0.00
0.00
7.90
0.00
Sugarcane
Tops & Leaves
209.83
209.83
0.00
0.00
0.00
Trash
139.89
0.00
0.00
139.89
0.00
Jute
Stalks
1971.13
0.00
0.00
1971.13
0.00
Castor
Stalks
5.47
5.47
0.00
0.00
0.00
Ground Nut
Stalks
12.83
12.83
0.00
0.00
0.00
Other Pulses
Stalks
275.68
0.00
0.00
275.68
0.00
Paddy
Straw
8981.07
8981.07
0.00
0.00
0.00
Wheat
Straw
951.14
951.14
0.00
0.00
0.00
Gram
Stalks
8.00
8.00
0.00
0.00
0.00
Seasumum
Stalks
48.11
0.00
0.00
48.11
0.00
Linseed
Stalks
32.95
0.00
0.00
32.95
0.00
Mustard
Stalks
817.93
0.00
0.00
817.93
0.00
Other Oilseeds
Stalks
3.76
0.00
0.00
3.76
0.00
Vegetables
Straw
1083.32
1083.32
0.00
0.00
0.00
24679.66
21076.17
303.30
3300.19
0.00
Rabi
TOTAL
Hajo
Kharif
Paddy
Straw
32061.19
31740.58
320.61
0.00
0.00
Maize
Stalks
40.73
40.73
0.00
0.00
0.00
Cobs
6.57
0.00
0.00
6.57
0.00
Stalks
12.15
0.00
0.00
12.15
0.00
Arhar
10 MW Biomass Based Power Plant
Crop Name
Sugarcane
Residue Type
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
Tops & Leaves
96.84
96.84
0.00
0.00
0.00
Trash
64.56
0.00
0.00
64.56
0.00
Jute
Stalks
2395.47
0.00
0.00
2395.47
0.00
Castor
Stalks
4.38
4.38
0.00
0.00
0.00
Ground Nut
Stalks
0.00
0.00
0.00
0.00
0.00
Other Pulses
Stalks
469.46
0.00
0.00
469.46
0.00
Paddy
Straw
11799.67
11799.67
0.00
0.00
0.00
Wheat
Straw
938.54
938.54
0.00
0.00
0.00
Gram
Stalks
12.57
12.57
0.00
0.00
0.00
Seasumum
Stalks
157.69
0.00
0.00
157.69
0.00
Linseed
Stalks
55.60
0.00
0.00
55.60
0.00
Mustard
Stalks
1172.42
0.00
0.00
1172.42
0.00
Other Oilseeds
Stalks
0.00
0.00
0.00
0.00
0.00
Vegetables
Straw
591.30
591.30
0.00
0.00
0.00
49879.14
45224.61
320.61
4333.92
0.00
Rabi
TOTAL
Goroimari
Kharif
Paddy
Straw
6439.66
6117.68
321.98
0.00
0.00
Maize
Stalks
40.73
40.73
0.00
0.00
0.00
Cobs
6.57
0.00
0.00
6.57
0.00
Arhar
Stalks
48.62
0.00
0.00
48.62
0.00
Sugarcane
Tops & Leaves
99.15
99.15
0.00
0.00
0.00
Trash
66.10
0.00
0.00
66.10
0.00
Jute
Stalks
752.86
0.00
0.00
752.86
0.00
Castor
Stalks
0.00
0.00
0.00
0.00
0.00
Ground Nut
Stalks
0.00
0.00
0.00
0.00
0.00
Other Pulses
Stalks
20.34
0.00
0.00
20.34
0.00
Paddy
Straw
9331.26
9331.26
0.00
0.00
0.00
Wheat
Straw
497.28
497.28
0.00
0.00
0.00
Rabi
10 MW Biomass Based Power Plant
Crop Name
Residue Type
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
Gram
Stalks
8.57
8.57
0.00
0.00
0.00
Seasumum
Stalks
26.73
0.00
0.00
26.73
0.00
Linseed
Stalks
55.60
0.00
0.00
55.60
0.00
Mustard
Stalks
206.51
0.00
0.00
206.51
0.00
Other Oilseeds
Stalks
0.00
0.00
0.00
0.00
0.00
Vegetables
Straw
423.40
423.40
0.00
0.00
0.00
18023.39
16518.07
321.98
1183.33
0.00
TOTAL
Chhaygaon
Kharif
Paddy
Straw
6405.95
6085.65
320.30
0.00
0.00
Maize
Stalks
149.36
149.36
0.00
0.00
0.00
Cobs
24.09
0.00
0.00
24.09
0.00
Arhar
Stalks
6.08
0.00
0.00
6.08
0.00
Sugarcane
Tops & Leaves
80.70
80.70
0.00
0.00
0.00
Trash
53.80
0.00
0.00
53.80
0.00
Jute
Stalks
256.66
0.00
0.00
256.66
0.00
Castor
Stalks
0.00
0.00
0.00
0.00
0.00
Ground Nut
Stalks
9.17
9.17
0.00
0.00
0.00
Other Pulses
Stalks
88.32
0.00
0.00
88.32
0.00
Paddy
Straw
8961.85
8961.85
0.00
0.00
0.00
Wheat
Straw
294.17
294.17
0.00
0.00
0.00
Gram
Stalks
5.71
5.71
0.00
0.00
0.00
Seasumum
Stalks
5.35
0.00
0.00
5.35
0.00
Linseed
Stalks
37.75
0.00
0.00
37.75
0.00
Mustard
Stalks
146.35
0.00
0.00
146.35
0.00
Other Oilseeds
Stalks
56.45
0.00
0.00
56.45
0.00
Vegetables
Straw
657.00
657.00
0.00
0.00
0.00
17238.75
16243.61
320.30
674.84
0.00
Rabi
TOTAL
Chandrapur
Kharif
10 MW Biomass Based Power Plant
Crop Name
Residue Type
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
Paddy
Straw
2670.27
2483.35
186.92
0.00
0.00
Maize
Stalks
0.00
0.00
0.00
0.00
0.00
Cobs
0.00
0.00
0.00
0.00
0.00
Arhar
Stalks
0.00
0.00
0.00
0.00
0.00
Sugarcane
Tops & Leaves
4.61
4.61
0.00
0.00
0.00
Trash
3.07
0.00
0.00
3.07
0.00
Jute
Stalks
6.84
0.00
0.00
6.84
0.00
Castor
Stalks
0.00
0.00
0.00
0.00
0.00
Ground Nut
Stalks
0.00
0.00
0.00
0.00
0.00
Other Pulses
Stalks
16.06
0.00
0.00
16.06
0.00
Paddy
Straw
2348.83
2348.83
0.00
0.00
0.00
Wheat
Straw
42.02
42.02
0.00
0.00
0.00
Gram
Stalks
0.00
0.00
0.00
0.00
0.00
Seasumum
Stalks
0.00
0.00
0.00
0.00
0.00
Linseed
Stalks
6.86
0.00
0.00
6.86
0.00
Mustard
Stalks
48.78
0.00
0.00
48.78
0.00
Other Oilseeds
Stalks
1.51
0.00
0.00
1.51
0.00
Vegetables
Straw
292.00
292.00
0.00
0.00
0.00
5440.86
5170.81
186.92
83.13
0.00
Rabi
TOTAL
Dimoria
Kharif
Paddy
Straw
9665.11
9375.16
289.95
0.00
0.00
Maize
Stalks
6.79
6.79
0.00
0.00
0.00
Cobs
1.10
0.00
0.00
1.10
0.00
Arhar
Stalks
30.39
0.00
0.00
30.39
0.00
Sugarcane
Tops & Leaves
46.12
46.12
0.00
0.00
0.00
Trash
30.74
0.00
0.00
30.74
0.00
Jute
Stalks
342.21
0.00
0.00
342.21
0.00
Castor
Stalks
2.19
2.19
0.00
0.00
0.00
Ground Nut
Stalks
49.50
49.50
0.00
0.00
0.00
10 MW Biomass Based Power Plant
Crop Name
Other Pulses
Residue Type
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
Stalks
107.06
0.00
0.00
107.06
0.00
Paddy
Straw
9965.45
9965.45
0.00
0.00
0.00
Wheat
Straw
170.90
170.90
0.00
0.00
0.00
Gram
Stalks
28.56
28.56
0.00
0.00
0.00
Seasumum
Stalks
44.55
0.00
0.00
44.55
0.00
Linseed
Stalks
3.43
0.00
0.00
3.43
0.00
Mustard
Stalks
170.74
0.00
0.00
170.74
0.00
Other Oilseeds
Stalks
18.82
0.00
0.00
18.82
0.00
Vegetables
Straw
1752.00
1752.00
0.00
0.00
0.00
22435.64
21396.66
289.95
749.03
0.00
Rabi
TOTAL
Chayani Barduar
Kharif
Paddy
Straw
3893.02
3659.44
233.58
0.00
0.00
Maize
Stalks
12.22
12.22
0.00
0.00
0.00
Cobs
1.97
0.00
0.00
1.97
0.00
Arhar
Stalks
6.08
0.00
0.00
6.08
0.00
Sugarcane
Tops & Leaves
212.13
212.13
0.00
0.00
0.00
Trash
141.42
0.00
0.00
141.42
0.00
Jute
Stalks
2323.61
0.00
0.00
2323.61
0.00
Castor
Stalks
0.00
0.00
0.00
0.00
0.00
Ground Nut
Stalks
0.00
0.00
0.00
0.00
0.00
Other Pulses
Stalks
114.02
0.00
0.00
114.02
0.00
Paddy
Straw
10298.55
10298.55
0.00
0.00
0.00
Wheat
Straw
253.54
253.54
0.00
0.00
0.00
Gram
Stalks
10.85
10.85
0.00
0.00
0.00
Seasumum
Stalks
28.51
0.00
0.00
28.51
0.00
Linseed
Stalks
0.00
0.00
0.00
0.00
0.00
Mustard
Stalks
291.07
0.00
0.00
291.07
0.00
Other Oilseeds
Stalks
36.88
0.00
0.00
36.88
0.00
Rabi
10 MW Biomass Based Power Plant
Crop Name
Vegetables
Residue Type
Straw
TOTAL
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
292.00
292.00
0.00
0.00
0.00
17915.87
14738.74
233.58
2943.55
0.00
Boko
Kharif
Paddy
Straw
10348.41
10037.96
310.45
0.00
0.00
Maize
Stalks
305.51
305.51
0.00
0.00
0.00
Cobs
49.28
0.00
0.00
49.28
0.00
Arhar
Stalks
33.42
0.00
0.00
33.42
0.00
Sugarcane
Tops & Leaves
1037.61
1037.61
0.00
0.00
0.00
Trash
691.74
0.00
0.00
691.74
0.00
Jute
Stalks
1129.29
0.00
0.00
1129.29
0.00
Castor
Stalks
602.09
602.09
0.00
0.00
0.00
Ground Nut
Stalks
311.68
311.68
0.00
0.00
0.00
Other Pulses
Stalks
339.92
0.00
0.00
339.92
0.00
Paddy
Straw
11464.43
11464.43
0.00
0.00
0.00
Wheat
Straw
277.36
277.36
0.00
0.00
0.00
Gram
Stalks
42.84
42.84
0.00
0.00
0.00
Seasumum
Stalks
222.73
0.00
0.00
222.73
0.00
Linseed
Stalks
147.58
0.00
0.00
147.58
0.00
Mustard
Stalks
772.40
0.00
0.00
772.40
0.00
Other Oilseeds
Stalks
189.66
0.00
0.00
189.66
0.00
Vegetables
Straw
791.32
791.32
0.00
0.00
0.00
28757.23
24870.78
310.45
3576.00
0.00
Rabi
TOTAL
Bongaon
Kharif
Paddy
Straw
6154.20
5846.49
307.71
0.00
0.00
Maize
Stalks
61.10
61.10
0.00
0.00
0.00
Cobs
9.86
0.00
0.00
9.86
0.00
Arhar
Stalks
21.27
0.00
0.00
21.27
0.00
Sugarcane
Tops & Leaves
115.29
115.29
0.00
0.00
0.00
10 MW Biomass Based Power Plant
Crop Name
Residue Type
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
Trash
76.86
0.00
0.00
76.86
0.00
Jute
Stalks
1231.96
0.00
0.00
1231.96
0.00
Castor
Stalks
122.61
122.61
0.00
0.00
0.00
Ground Nut
Stalks
0.00
0.00
0.00
0.00
0.00
Other Pulses
Stalks
61.02
0.00
0.00
61.02
0.00
Paddy
Straw
7674.27
7674.27
0.00
0.00
0.00
Wheat
Straw
203.12
203.12
0.00
0.00
0.00
Gram
Stalks
23.42
23.42
0.00
0.00
0.00
Seasumum
Stalks
29.40
0.00
0.00
29.40
0.00
Linseed
Stalks
10.30
0.00
0.00
10.30
0.00
Mustard
Stalks
642.31
0.00
0.00
642.31
0.00
Other Oilseeds
Stalks
1.51
0.00
0.00
1.51
0.00
Vegetables
Straw
416.10
416.10
0.00
0.00
0.00
16854.58
14462.39
307.71
2084.48
0.00
Rabi
TOTAL
Chamaria
Kharif
Paddy
Straw
35167.51
34815.84
351.68
0.00
0.00
Maize
Stalks
2.72
2.72
0.00
0.00
0.00
Cobs
0.44
0.00
0.00
0.44
0.00
Arhar
Stalks
351.25
0.00
0.00
351.25
0.00
Sugarcane
Tops & Leaves
182.16
182.16
0.00
0.00
0.00
Trash
121.44
0.00
0.00
121.44
0.00
Jute
Stalks
5998.94
0.00
0.00
5998.94
0.00
Castor
Stalks
2.19
2.19
0.00
0.00
0.00
Ground Nut
Stalks
3.67
3.67
0.00
0.00
0.00
Other Pulses
Stalks
341.52
0.00
0.00
341.52
0.00
Paddy
Straw
8223.04
8223.04
0.00
0.00
0.00
Wheat
Straw
1822.44
1822.44
0.00
0.00
0.00
Gram
Stalks
22.85
22.85
0.00
0.00
0.00
Rabi
10 MW Biomass Based Power Plant
Crop Name
Residue Type
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
Seasumum
Stalks
203.13
0.00
0.00
203.13
0.00
Linseed
Stalks
92.66
0.00
0.00
92.66
0.00
Mustard
Stalks
1868.39
0.00
0.00
1868.39
0.00
Other Oilseeds
Stalks
45.91
0.00
0.00
45.91
0.00
Vegetables
Straw
299.30
299.30
0.00
0.00
0.00
54749.55
45374.20
351.68
9023.68
0.00
TOTAL
Rani
Kharif
Paddy
Straw
9440.34
9157.13
283.21
0.00
0.00
Maize
Stalks
0.00
0.00
0.00
0.00
0.00
Cobs
0.00
0.00
0.00
0.00
0.00
Arhar
Stalks
145.85
0.00
0.00
145.85
0.00
Sugarcane
Tops & Leaves
830.09
830.09
0.00
0.00
0.00
Trash
553.39
0.00
0.00
553.39
0.00
Jute
Stalks
1711.05
0.00
0.00
1711.05
0.00
Castor
Stalks
153.26
153.26
0.00
0.00
0.00
Ground Nut
Stalks
751.69
751.69
0.00
0.00
0.00
Other Pulses
Stalks
107.06
0.00
0.00
107.06
0.00
Paddy
Straw
8112.00
8112.00
0.00
0.00
0.00
Wheat
Straw
714.41
714.41
0.00
0.00
0.00
Gram
Stalks
0.00
0.00
0.00
0.00
0.00
Seasumum
Stalks
89.09
0.00
0.00
89.09
0.00
Linseed
Stalks
267.70
0.00
0.00
267.70
0.00
Mustard
Stalks
926.88
0.00
0.00
926.88
0.00
Other Oilseeds
Stalks
374.79
0.00
0.00
374.79
0.00
Vegetables
Straw
708.10
708.10
0.00
0.00
0.00
24885.70
20426.68
283.21
4175.81
0.00
Rabi
TOTAL
Rampur
Kharif
10 MW Biomass Based Power Plant
Crop Name
Residue Type
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
Paddy
Straw
4508.89
4238.35
270.53
0.00
0.00
Maize
Stalks
13.58
13.58
0.00
0.00
0.00
Cobs
2.19
0.00
0.00
2.19
0.00
Arhar
Stalks
6.08
0.00
0.00
6.08
0.00
Sugarcane
Tops & Leaves
255.94
255.94
0.00
0.00
0.00
Trash
170.63
0.00
0.00
170.63
0.00
Jute
Stalks
817.88
0.00
0.00
817.88
0.00
Castor
Stalks
1.09
1.09
0.00
0.00
0.00
Ground Nut
Stalks
0.00
0.00
0.00
0.00
0.00
Other Pulses
Stalks
120.98
0.00
0.00
120.98
0.00
Paddy
Straw
7236.53
7236.53
0.00
0.00
0.00
Wheat
Straw
224.13
224.13
0.00
0.00
0.00
Gram
Stalks
6.28
6.28
0.00
0.00
0.00
Seasumum
Stalks
30.29
0.00
0.00
30.29
0.00
Linseed
Stalks
0.00
0.00
0.00
0.00
0.00
Mustard
Stalks
266.68
0.00
0.00
266.68
0.00
Other Oilseeds
Stalks
30.86
0.00
0.00
30.86
0.00
Vegetables
Straw
354.78
354.78
0.00
0.00
0.00
14046.81
12330.69
270.53
1445.58
0.00
Rabi
TOTAL
Bezera
Kharif
Paddy
Straw
7228.60
7011.75
216.86
0.00
0.00
Maize
Stalks
8.15
8.15
0.00
0.00
0.00
Cobs
1.31
0.00
0.00
1.31
0.00
Arhar
Stalks
7.29
0.00
0.00
7.29
0.00
Sugarcane
Tops & Leaves
48.42
48.42
0.00
0.00
0.00
Trash
32.28
0.00
0.00
32.28
0.00
Jute
Stalks
85.55
0.00
0.00
85.55
0.00
Castor
Stalks
4.38
4.38
0.00
0.00
0.00
Ground Nut
Stalks
91.67
91.67
0.00
0.00
0.00
10 MW Biomass Based Power Plant
Crop Name
Other Pulses
Residue Type
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
Stalks
133.83
0.00
0.00
133.83
0.00
Paddy
Straw
9433.76
9433.76
0.00
0.00
0.00
Wheat
Straw
270.35
270.35
0.00
0.00
0.00
Gram
Stalks
2.28
2.28
0.00
0.00
0.00
Seasumum
Stalks
133.64
0.00
0.00
133.64
0.00
Linseed
Stalks
5.49
0.00
0.00
5.49
0.00
Mustard
Stalks
123.58
0.00
0.00
123.58
0.00
Other Oilseeds
Stalks
17.31
0.00
0.00
17.31
0.00
Vegetables
Straw
319.74
319.74
0.00
0.00
0.00
17947.64
17190.50
216.86
540.28
0.00
Rabi
TOTAL
Kamalpur
Kharif
Paddy
Straw
2989.44
2780.18
209.26
0.00
0.00
Maize
Stalks
2.72
2.72
0.00
0.00
0.00
Cobs
0.44
0.00
0.00
0.44
0.00
Arhar
Stalks
1.22
0.00
0.00
1.22
0.00
Sugarcane
Tops & Leaves
20.75
20.75
0.00
0.00
0.00
Trash
13.83
0.00
0.00
13.83
0.00
Jute
Stalks
17.11
0.00
0.00
17.11
0.00
Castor
Stalks
0.00
0.00
0.00
0.00
0.00
Ground Nut
Stalks
22.00
22.00
0.00
0.00
0.00
Other Pulses
Stalks
112.95
0.00
0.00
112.95
0.00
Paddy
Straw
9247.98
9247.98
0.00
0.00
0.00
Wheat
Straw
89.65
89.65
0.00
0.00
0.00
Gram
Stalks
13.71
13.71
0.00
0.00
0.00
Seasumum
Stalks
21.38
0.00
0.00
21.38
0.00
Linseed
Stalks
27.46
0.00
0.00
27.46
0.00
Mustard
Stalks
125.21
0.00
0.00
125.21
0.00
Other Oilseeds
Stalks
7.53
0.00
0.00
7.53
0.00
Rabi
10 MW Biomass Based Power Plant
Crop Name
Vegetables
Residue Type
Straw
TOTAL
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
300.76
300.76
0.00
0.00
0.00
13014.13
12477.75
209.26
327.12
0.00
Rangia
Kharif
Paddy
Straw
30433.86
30129.52
304.34
0.00
0.00
Maize
Stalks
411.41
411.41
0.00
0.00
0.00
Cobs
66.36
0.00
0.00
66.36
0.00
Arhar
Stalks
8.51
0.00
0.00
8.51
0.00
Sugarcane
Tops & Leaves
156.79
156.79
0.00
0.00
0.00
Trash
104.53
0.00
0.00
104.53
0.00
Jute
Stalks
99.24
0.00
0.00
99.24
0.00
Castor
Stalks
0.00
0.00
0.00
0.00
0.00
Ground Nut
Stalks
0.00
0.00
0.00
0.00
0.00
Other Pulses
Stalks
180.93
0.00
0.00
180.93
0.00
Paddy
Straw
16548.58
16548.58
0.00
0.00
0.00
Wheat
Straw
703.20
703.20
0.00
0.00
0.00
Gram
Stalks
69.12
69.12
0.00
0.00
0.00
Seasumum
Stalks
33.85
0.00
0.00
33.85
0.00
Linseed
Stalks
0.00
0.00
0.00
0.00
0.00
Mustard
Stalks
1253.72
0.00
0.00
1253.72
0.00
Other Oilseeds
Stalks
0.00
0.00
0.00
0.00
0.00
Vegetables
Straw
1954.94
1954.94
0.00
0.00
0.00
52025.04
49973.56
304.34
1747.14
0.00
Rabi
TOTAL
Goreswar
Kharif
Paddy
Straw
25320.34
25067.14
253.20
0.00
0.00
Maize
Stalks
32.59
32.59
0.00
0.00
0.00
Cobs
5.26
0.00
0.00
5.26
0.00
Arhar
Stalks
17.62
0.00
0.00
17.62
0.00
Sugarcane
Tops & Leaves
371.23
371.23
0.00
0.00
0.00
10 MW Biomass Based Power Plant
Crop Name
Residue Type
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
Trash
247.49
0.00
0.00
247.49
0.00
Jute
Stalks
1871.89
0.00
0.00
1871.89
0.00
Castor
Stalks
0.00
0.00
0.00
0.00
0.00
Ground Nut
Stalks
53.17
53.17
0.00
0.00
0.00
Other Pulses
Stalks
55.14
0.00
0.00
55.14
0.00
Paddy
Straw
12151.99
12151.99
0.00
0.00
0.00
Wheat
Straw
245.14
245.14
0.00
0.00
0.00
Gram
Stalks
11.42
11.42
0.00
0.00
0.00
Seasumum
Stalks
59.69
0.00
0.00
59.69
0.00
Linseed
Stalks
83.74
0.00
0.00
83.74
0.00
Mustard
Stalks
1780.58
0.00
0.00
1780.58
0.00
Other Oilseeds
Stalks
22.58
0.00
0.00
22.58
0.00
Vegetables
Straw
386.90
386.90
0.00
0.00
0.00
42716.77
38319.58
253.20
4143.98
0.00
Rabi
TOTAL
Bihdia Jajikona
Kharif
Paddy
Straw
6268.84
5955.39
313.44
0.00
0.00
Maize
Stalks
9.50
9.50
0.00
0.00
0.00
Cobs
1.53
0.00
0.00
1.53
0.00
Arhar
Stalks
10.94
0.00
0.00
10.94
0.00
Sugarcane
Tops & Leaves
225.97
225.97
0.00
0.00
0.00
Trash
150.65
0.00
0.00
150.65
0.00
Jute
Stalks
431.18
0.00
0.00
431.18
0.00
Castor
Stalks
6.57
6.57
0.00
0.00
0.00
Ground Nut
Stalks
45.84
45.84
0.00
0.00
0.00
Other Pulses
Stalks
377.39
0.00
0.00
377.39
0.00
Paddy
Straw
20915.26
20915.26
0.00
0.00
0.00
Wheat
Straw
110.66
110.66
0.00
0.00
0.00
Gram
Stalks
2.86
2.86
0.00
0.00
0.00
Rabi
10 MW Biomass Based Power Plant
Crop Name
Residue Type
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
Seasumum
Stalks
60.58
0.00
0.00
60.58
0.00
Linseed
Stalks
51.48
0.00
0.00
51.48
0.00
Mustard
Stalks
500.84
0.00
0.00
500.84
0.00
Other Oilseeds
Stalks
42.15
0.00
0.00
42.15
0.00
Vegetables
Straw
421.94
421.94
0.00
0.00
0.00
29634.17
27693.99
313.44
1626.73
0.00
TOTAL
MORIGAON DISTRICT
Mayong
Kharif
Paddy
Straw
26273.37
25747.90
525.47
0.00
0.00
Maize
Stalks
74.68
74.68
0.00
0.00
0.00
Cobs
12.05
0.00
0.00
12.05
0.00
Arhar
Stalks
3.04
0.00
0.00
3.04
0.00
Sugarcane
Tops & Leaves
265.17
265.17
0.00
0.00
0.00
Trash
176.78
0.00
0.00
176.78
0.00
Jute
Stalks
1779.49
0.00
0.00
1779.49
0.00
Castor
Stalks
10.95
10.95
0.00
0.00
0.00
Ground Nut
Stalks
0.00
0.00
0.00
0.00
0.00
Other Pulses
Stalks
6.96
0.00
0.00
6.96
0.00
Paddy
Straw
41435.50
41435.50
0.00
0.00
0.00
Wheat
Straw
525.30
525.30
0.00
0.00
0.00
Gram
Stalks
8.00
8.00
0.00
0.00
0.00
Seasumum
Stalks
218.27
0.00
0.00
218.27
0.00
Linseed
Stalks
75.50
0.00
0.00
75.50
0.00
Mustard
Stalks
1213.07
0.00
0.00
1213.07
0.00
Other Oilseeds
Stalks
323.62
0.00
0.00
323.62
0.00
Vegetables
Straw
1284.80
1284.80
0.00
0.00
0.00
73686.53
69352.28
525.47
3808.78
0.00
Rabi
TOTAL
Moriabari
Kharif
10 MW Biomass Based Power Plant
Crop Name
Residue Type
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
Paddy
Straw
3322.10
3023.11
298.99
0.00
0.00
Maize
Stalks
0.00
0.00
0.00
0.00
0.00
Cobs
0.00
0.00
0.00
0.00
0.00
Arhar
Stalks
3.04
0.00
0.00
3.04
0.00
Sugarcane
Tops & Leaves
1579.47
1579.47
0.00
0.00
0.00
Trash
1052.98
0.00
0.00
1052.98
0.00
Jute
Stalks
1485.19
0.00
0.00
1485.19
0.00
Castor
Stalks
0.00
0.00
0.00
0.00
0.00
Ground Nut
Stalks
27.50
27.50
0.00
0.00
0.00
Other Pulses
Stalks
26.77
0.00
0.00
26.77
0.00
Paddy
Straw
20990.00
20990.00
0.00
0.00
0.00
Wheat
Straw
535.11
535.11
0.00
0.00
0.00
Gram
Stalks
0.00
0.00
0.00
0.00
0.00
Seasumum
Stalks
69.49
0.00
0.00
69.49
0.00
Linseed
Stalks
51.48
0.00
0.00
51.48
0.00
Mustard
Stalks
424.41
0.00
0.00
424.41
0.00
Other Oilseeds
Stalks
0.00
0.00
0.00
0.00
0.00
Vegetables
Straw
137.24
137.24
0.00
0.00
0.00
29704.78
26292.43
298.99
3113.36
0.00
Rabi
TOTAL
Laharighat
Kharif
Paddy
Straw
19829.21
19333.48
495.73
0.00
0.00
Maize
Stalks
0.00
0.00
0.00
0.00
0.00
Cobs
0.00
0.00
0.00
0.00
0.00
Arhar
Stalks
0.00
0.00
0.00
0.00
0.00
Sugarcane
Tops & Leaves
447.33
447.33
0.00
0.00
0.00
Trash
298.22
0.00
0.00
298.22
0.00
Jute
Stalks
10266.30
0.00
0.00
10266.30
0.00
Castor
Stalks
0.00
0.00
0.00
0.00
0.00
Ground Nut
Stalks
293.34
293.34
0.00
0.00
0.00
10 MW Biomass Based Power Plant
Crop Name
Other Pulses
Residue Type
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
Stalks
54.60
0.00
0.00
54.60
0.00
Paddy
Straw
27763.17
27763.17
0.00
0.00
0.00
Wheat
Straw
491.68
491.68
0.00
0.00
0.00
Gram
Stalks
57.12
57.12
0.00
0.00
0.00
Seasumum
Stalks
160.36
0.00
0.00
160.36
0.00
Linseed
Stalks
49.42
0.00
0.00
49.42
0.00
Mustard
Stalks
538.24
0.00
0.00
538.24
0.00
Other Oilseeds
Stalks
34.62
0.00
0.00
34.62
0.00
Vegetables
Straw
438.00
438.00
0.00
0.00
0.00
60721.61
48824.12
495.73
11401.76
0.00
Rabi
TOTAL
Bhurbandha
Kharif
Paddy
Straw
5421.45
4987.74
433.72
0.00
0.00
Maize
Stalks
0.00
0.00
0.00
0.00
0.00
Cobs
0.00
0.00
0.00
0.00
0.00
Arhar
Stalks
6.08
0.00
0.00
6.08
0.00
Sugarcane
Tops & Leaves
461.16
461.16
0.00
0.00
0.00
Trash
307.44
0.00
0.00
307.44
0.00
Jute
Stalks
2898.52
0.00
0.00
2898.52
0.00
Castor
Stalks
0.00
0.00
0.00
0.00
0.00
Ground Nut
Stalks
0.00
0.00
0.00
0.00
0.00
Other Pulses
Stalks
33.19
0.00
0.00
33.19
0.00
Paddy
Straw
29514.12
29514.12
0.00
0.00
0.00
Wheat
Straw
271.76
271.76
0.00
0.00
0.00
Gram
Stalks
0.00
0.00
0.00
0.00
0.00
Seasumum
Stalks
337.65
0.00
0.00
337.65
0.00
Linseed
Stalks
65.21
0.00
0.00
65.21
0.00
Mustard
Stalks
939.89
0.00
0.00
939.89
0.00
Other Oilseeds
Stalks
0.00
0.00
0.00
0.00
0.00
Rabi
10 MW Biomass Based Power Plant
Crop Name
Vegetables
Residue Type
Straw
TOTAL
ABEIL
Biomass
Generation
Biomass Consumption
Fodder
Thatching
Domestic
fuel
Collectable
Surplus
138.70
138.70
0.00
0.00
0.00
40395.15
35373.47
433.72
4587.97
0.00
Kapili
Kharif
Paddy
Straw
3515.40
3199.02
316.39
0.00
0.00
Maize
Stalks
0.00
0.00
0.00
0.00
0.00
Cobs
0.00
0.00
0.00
0.00
0.00
Arhar
Stalks
0.00
0.00
0.00
0.00
0.00
Sugarcane
Tops & Leaves
106.07
106.07
0.00
0.00
0.00
Trash
70.71
0.00
0.00
70.71
0.00
Jute
Stalks
8161.71
0.00
0.00
8161.71
0.00
Castor
Stalks
0.00
0.00
0.00
0.00
0.00
Ground Nut
Stalks
0.00
0.00
0.00
0.00
0.00
Other Pulses
Stalks
173.44
0.00
0.00
173.44
0.00
Paddy
Straw
6484.91
6484.91
0.00
0.00
0.00
Wheat
Straw
145.68
145.68
0.00
0.00
0.00
Gram
Stalks
0.00
0.00
0.00
0.00
0.00
Seasumum
Stalks
33.85
0.00
0.00
33.85
0.00
Linseed
Stalks
0.00
0.00
0.00
0.00
0.00
Mustard
Stalks
1328.52
0.00
0.00
1328.52
0.00
Other Oilseeds
Stalks
0.00
0.00
0.00
0.00
0.00
Vegetables
Straw
211.70
211.70
0.00
0.00
0.00
20231.99
10147.37
316.39
9768.23
0.00
Rabi
TOTAL
3.6.2
Biomass Surplus from Agro-industries
The only biomass available in surplus from agro industries is rice husk. Other biomass
generated from agro industries is fully consumed in industrial and other sectors. The district
wise surplus biomass available is given in the table below.
10 MW Biomass Based Power Plant
ABEIL
3.21 District wise Biomass Surplus from Agro-industries in Tons
District
3.6.3
Rice Husk
Total
Kamrup
30524
30524
Morigaon
14806
14806
Grand total
45330
45330
Biomass Surplus from Forest and other land
The following table gives the details regarding the biomass available from the forest and
other wasteland within districts is given below.
3.22 District wise Biomass Surplus from Forest and other land in Tons
District
Surplus Wood
Kamrup
110805
110805
5781
5781
116586
116586
Morigaon
Grand total
3.6.4
Total
Summary of Surplus Biomass Availability
The following table gives the summary of surplus biomass from different sources within the
district.
3.23 Summary of surplus biomass in Tons
Districts
3.7
Crop residue Forest and
other land
Agroindustry
Total
Kamrup
0.00
110805
30524
141329
Morigaon
0.00
5781
14806
20587
Grand total
0.00
116586
45330
161916
POWER GENERATION POTENTIAL
The surplus available for the power generation purpose is 161916 tons/year, which mainly
consists of the wood from the forestlands and rice husk.
10 MW Biomass Based Power Plant
ABEIL
The power potential available with the surplus wood is about 11.66 MW, and with the Agroindustries residues i.e rice husk is about 4.53 MW. The total power potential available in
Kamrup and Morigaon districts is 16.19 MW.
3.8
BIOMASS CHARACTERISTICS, AVAILABILITY AND COST
3.8.1
Biomass Characteristics
Biomass is a renewable source of energy that can be made use of effectively for thermal as
well as electrical energy generation. All the processes in which biomass is used as fuel have a
definite bearing on the properties of the biomass material. Thus the characterization of
biomass material is essential. The characterization of biomass involves the Proximate and
Ultimate Analysis.
3.8.1.1 Proximate Analysis
The proximate analysis gives the proxy information of biomass constituents such as moisture,
volatiles, fixed carbon and ash content. The carbon content determined through this method is
not actual carbon content in the biomass but only the non-volatile part of carbon content, some
of the carbon present in the biomass escapes along with volatiles. The proximate analysis of
some biomass is given in the table.
Calorific Value
(kcal/kg)
Ash (%)
Paddy straw
3730
15.50
68.30
16.20
Wheat straw
4146
7.70
80.60
11.70
Maize Stalks
3200 to 3800
1 to 20
60 to 85
10 to 20
Mustard stalk
4178
4.90
78.00
17.10
Cane trash
4120
10.90
70.40
18.70
3700 to 4200
1 to 3
70 to 85
15 to 20
3200
19.20
66.20
14.60
Biomass
Wood
Rice husk
Volatile
Fixed
matter (%) Carbon (%)
3.8.1.2 Ultimate Analysis
The ultimate analysis involves the determination of the elemental composition of the fuel i.e.
carbon, nitrogen, oxygen, hydrogen, sulphur etc. The determination of the total carbon and
10 MW Biomass Based Power Plant
ABEIL
hydrogen and their (C/H) ratio gives an indication of the type of volatiles present in the
biomass i.e. saturated or unsaturated hydrocarbons which governs the tar formation. The
ultimate analysis of some biomass is given in the table.
Biomass
Oxygen
(%)
Ash (%)
Paddy straw
35.97
5.28
0.17
43.08
15.50
Mustard Stalks
40.89
5.92
6.37
39.12
7.70
Maize Stalk
35 to 40
6 to 8
0.5 to 1
50 to 55
1 to 20
Cane trash
39.75
5.55
0.17
46.82
7.71
5 to 7 0.5 to 0.9
40 to 48
1 to 3
35.88
22.20
Wood
Rice husk
3.8.2
Carbon Hydrogen Nitrogen
(%)
(%)
(%)
45 to 50
36.42
4.91
0.59
Biomass Collection, handling, and preparation:
As mentioned earlier, biomass is generated from crop residues, agro industry, barren and
forest lands. The biomass obtained as crop residue and agro industry residue will have low
bulk density. The type of crop residue generated depends on the crop and also harvesting
methods. For example, if combines are used for harvesting of paddy crop, almost 5% of straw
is left in the field. The harvested straw is in the form of powder with low bulk density. This
straw needs to densified using briquetting technique. The straw left in the field, needs manual
harvesting. Manual harvested straw can be densified using bailing. If the paddy crop can be
harvested manual, total straw can be collected and can be efficiently used. Wheat straw is
also being harvested similarly.
Residue from oil seeds and pulses are brittle woody type. This type of material needs
mechanism to break into pieces of 2 to 6 inches. Usually choppers are used for this purpose.
Biomass obtained from energy plantation or wood from forest and barren land needs special
attention of preparation. This material is heavy and transportation problems are less compared
with low bulk residues.
Depending on the size and quality of material, shredders, cutters, choppers and chippers can
be used.
10 MW Biomass Based Power Plant
3.8.3
ABEIL
Seasonal Biomass Availability and Cost
The major crops in this area are paddy, maize wheat, sugarcane and barley. The residues
from these crops like from these crops like paddy straw, wheat straw, maize stalks are used
as fodder. Maize cobs, cane trash, Til and Mustard stalks are used as domestic fuel. Rice
husk and Wood are the major biomass available this area which is used for industrial purpose
and domestic. After the consumption of different biomasses in various sectors cane trash,
Mustard and Til stalks, Maize cobs, wood and rice husk are available in surplus quantity,
which can be used for power generation.
As the power plant start working, biomass prices may increase to tune to 5 to 10 % in the offseason.
3.8.4
Transportation Modes
Tractor trolleys and bullock carts are the most important means of transport available with
farmers. The farmers are having adequate means for the transportation of the biomass.
Different modes of transport like head load, hand carts, bullock carts, tractors, trucks etc. are
used for the wood transportation. Wood in large quantity is transported either by means of
tractor or trucks. While for transporting small quantity handcarts or bullock carts are used.
3.8.4.1 Bullock Carts
In rural areas, bullock cart has been the most common mode of transport. Although tractor
trolleys have also been adopted but still bullock cart is quite common particularly with the
small and medium farms even now. Farmers usually do not charge for hiring of bullock carts.
3.8.4.2 Tractor Trolleys
All the tractor owners do not own a trolley. As such special four-wheel wagons can be
developed which may carry large quantity of crop residue stalks and wood. One such wagon,
having capacity of 3-5 tones of crop residue stalks and 5-7 tones of wood. This capacity is less
than that of a truck. The initial cost of a wagon and trolley is Rs. 25000 and Rs. 20000
respectively.
3.8.4.3 Trucks
10 MW Biomass Based Power Plant
ABEIL
Trucks are not at all common in rural areas for transport of agricultural wastes. However, for
handling large volumes of arhar stalks, the use of trucks may become necessary because of
time factor. These are fast moving vehicles. The capacity of a truck as mentioned above is
about 5-7 tonnes for crop residue stalks and about 8-10 tonnes for Wood.
3.8.5
Storage
Approximate biomass balance for year replicates the biomass is available in surplus in large
quantity only in the month of harvesting. This large surplus biomass quantity has to be stored
and should be used for rest of the year. Hence this biomass has to be procured in these
months and stored.
The following points may be taken into account while planning storage facilities:

A well-drained site may be chosen.

Leave at least 40 cms. Space between each stack to ensure proper drainage and
ventilation.

Plan different storage sites as a safety precaution against the fire. Ample fireguards and
precautions may be taken at each of the site.

There should be adequate natural ventilation arrangements and no natural shade of any
kind should be near the stacks.
On storage, the ash content increase, volatile matter decrease, fixed carbon increases and no
appreciable change on tone of material. The loss of VM is to be corrected with loss of weight.
3.9
BIOMASS REQUIREMENT:
Biomass Power plant will be operating at a PLF of 90% anf the rice husk requirement will be
108405 MT per annum.
3.10
CATEGORY WISE BIOMASS AVAILABLE:
The category wise biomass available from different sources is shown in the table below
3.25 Category wise availability of Biomass
10 MW Biomass Based Power Plant
Biomass Type
ABEIL
Residue
Biomass Available
Agro Residue
Rice Husk
Husk
45330
Wood
116586
Forest & other lands
Wood
Grand Total
3.10
161916
AVERAGE COST OF BIOMASS:
The average cost of the biomass is taken as Rs.1500 per ton,as per current rates with annual
escalation of 5%. .
10 MW Biomass Based Power Plant
ABEIL
4. PLANT AND EQUIPMENT DESIGN CRITERIA
4.0
GENERAL
This power plant will be using the combustion technology. The basic steps involve, biomass
handling, boiler, turbo generator and evacuation system.
Power generation is having direct bearing on the pressure and superheated temperature of
steam. Normally 67 bar and 490 Deg C, is used for biomass based power plants. Clearly, the
technological improvements can allow us to recover and put to use the energy, which would
otherwise be wasted. In that process, the need for new energy projects can be reduced,
resources can be preserved, and energy costs and environmental damage can be minimized,
and these benefits can be the greatest when abundant renewable biomass is the power
generation fuel. High pressure and high temperature cycles are crucial for increasing the
operating efficiency and the power output from the Biomass Power Plants. The choice of the
level of the pressure and temperature for the cycle depends on the level of confidence in the
plant operators, quality of the feed water and the water treatment systems available and the
cost of the high pressure/ temperature boiler and Turbo generator systems and the financial
benefits realizable from the power plant by way of the sale of the exportable power.
Thermodynamically, energy recovery from the Rankine Cycle is more dependent on the steam
inlet temperature than the pressure and the higher the inlet steam temperature, higher the
cycle efficiency. However, the practically attainable limits of temperatures are influenced by
the metallurgy of the boiler tubing, piping and the turbine components and the complexity of
the Creep fatigue interaction for the materials at higher temperatures.
Temperatures upto 400 0C require the use of ordinary carbon steel and beyond 400 0C low
alloy steels are employed. Above 500 0C, the requirements become stringent and expensive
and above 550 0C, the requirements are very stringent and prohibitively expensive. It is
extremely important that the selection of the temperature is done keeping in mind the nature of
the industry. Considerations such as cost, maintainability, provision of adequate safety
margins, the experience of the industry so far and the level of the operating personnel
available in the industry, force us to a selection of around 485 0C as the practical limit for the
steam temperatures. It is also important to keep in mind that the superheated steam
temperature response is a little erratic, even with a good steam temperature control system,
10 MW Biomass Based Power Plant
ABEIL
mainly because of the nature of the fuel and the difficulty to ensure a correctly metered
quantity of fuel flow to the boiler. From this point of view also 485 0C is a safe selection.
Looking from purely the Cycle Efficiency point of view, with the selection of 485 0C as the
steam temperature, the Thermodynamics laws, typical construction of the turbine blading and
the practical extent of steam expansion possible in the turbines, dictate the limits of cycle
pressure. Keeping the above temperature, there is a little thermodynamic efficiency advantage
to be gained by pressures exceeding 67 ata.
The cycle parameters are decided as 64 Ata and 480 0C at the turbine throttle valve inlet.
Correspondingly the boiler outlet parameters shall be 67 Ata and 485 0C, accounting for the
pressure and temperature losses in the piping.
As the proposed power plant will be operating with the boiler outlet steam parameters of 67
Ata and 485  5 0C, a feed water management program will be implemented whereby the
complete feed water requirements of the boiler will be met essentially by the condensate. The
steam Condensate will be available at 450C and will be directly used in the feed water circuit,
although with certain monitoring for certain circuits. The make up for the plant operation will be
demineralized water and a Demineralized water treatment plant of adequate capacity will be
provided.
The boiler being proposed for the biomass power plant, will be with the steam parameters of
67 Ata and 485  5 0C at the boiler outlet. The boiler will be designed with a travelling grate
with electric drive to burn the biomass. The steam to biomass percentage will be achieved with
a minimum efficiency of 80 % with the dried biomass.
The power generation turbine will be a condensing machine. The turbine steam inlet
parameters will be 64 ata and 480 0C. The power plant will be operating for nearly 330 days.
The boiler will be operating on 100 % of each biomass and also in combination of various
biomasses.
The power generation cycle will be provided with a deaerator serving the dual purpose of
deaerating the feed water as well as heating the feed water with the extraction steam. The
deaerator will be operating at 2.7 ata pressure, with the deaerated feed water temperature at
105 0C. The power generation in the turbo generator will be at 11 kV level. The turbo
10 MW Biomass Based Power Plant
ABEIL
generator will be operating in parallel with the ASEB Grid. The entire power requirements of
the plant and the power requirements of the auxiliaries amounting to 1 MW(approx) of the
power plant will be met by the power generated in the new turbogenerator. The balance of the
power generated i.e.10 MW in the plant will be exported to the grid.
The exportable power will be stepped up to 132 kV and will be connected to Jagi Road substation 132/11 kV of ASEB located at 1-2 kms distance. Adequate space and transformer
capacities are available at the sub-station, for receiving the exportable quantum of power from
the power plant.
All the plant and systems shall be designed to achieve the best possible efficiency under the
specified operating conditions. The power plant cycle shall be designed with one Deaerator for
feed water heating. The steam requirements of the deaerator shall be met with the extraction
from the turbine & low load PRDS.
The complete plant instrumentation and control system shall be based on Distributed Control
System (DCS) philosophy, covering the total functioning requirements of measuring,
monitoring, alarming and controlling, logging, sequence interlocks and equipment protection
etc.
The ash collection points are, Grate ash from the furnace bottom and fly ash from the Air
Heaters and Electro Static Precipitator hoppers. Ash handling system will have a combination
of submerged scrapper conveyor or pneumatic conveyors. All the ash shall be taken and
stored in bins and disposed off in trucks to be used as landfill or to be used as nutrients to the
fields, or to be disposed of to Brick Kiln Owners.
The optimum arrangement of the equipment shall be determined by the consideration of
functional requirements, economy of equipment supports, installation and maintenance access
requirements.
This section of the report gives the basic criteria for design of the power plant. The design
parameters like the size, layout, ratings, quantities, materials of construction, type of
equipment etc., described in this report are approximate. Necessary changes could occur as
the detailed engineering of the plant progresses, and such changes are permitted as long as
the detailed engineering of the plant achieves the intent of this scheme.
10 MW Biomass Based Power Plant
4.1
AMBIENT CONDITIONS
Plant Elevation above Mean Sea Level (MSL)
4.1.1
: As per IS: 875
Seismic Coefficient
Design
4.2
: 1500 -2600 mm
Wind
Design and velocity
4.1.5
: 85.0 %
: 45.0 %
: 60.0 %
Precipitation
Total Annual Rainfall
4.1.4
: 37 °C
: 7 °C
: 30 °C
: 35 °C
: 27 °C
: 45 °C
Relative Humidity
Maximum
Minimum
Plant design relative humidity
4.1.3
: 262 meters
Temperatures
Maximum day temperature
Minimum day temperature
Average day temperature
Plant design temperature (dry bulb)
Plant design wet bulb temperature
Plant design temperature for electrical equipment
4.1.2
ABEIL
: As per IS: 893
DESIGN AND GUARANTEE FUEL
The design and guarantee fuel for the power plant is rice husk and wood. Detailed availability
is given in Chapter 3.
4.3
RAW WATER
The raw water supply will be from canal / bore wells. The distance of canal from power plant is
2 Kms. This raw water is used as a makeup of the losses in the boiler blow down, cooling
tower blow down, service water etc. The raw water requirement for power plant is 1980 KL per
day. Borewells are to be dug. The raw water will be analyzed.
10 MW Biomass Based Power Plant
4.4
MAIN PLANT AND EQUIPMENT
4.4.1
Steam Generator & Auxiliaries
ABEIL
The steam generating system for the power plant will use biomass collected from the fields,
sugar industry, and rice mills. Boiler will be designed to fire the biomass like cotton stalks, and
mustard stalks from crops, with a Maximum Continuous Rating (MCR) of 50 tph, with the outlet
steam parameters at 67 Ata and 485°C. The variation on the superheater outlet temperature
shall be ± 5 °C. The combustion system of the boiler shall be travelling grate with spreader
stoker. The boiler efficiency, firing 100% mustard stalks, shall be a minimum of 80.0 % on the
GCV basis. The dust concentration in the flue gases leaving the boiler shall be a maximum of
115 mg/Nm³.
The design of the boiler shall be of bi-drum, natural circulation; radiant furnace with water
cooled membrane walls, two-stage superheater with interstage desuperheater and balanced
draft. The boiler shall be top supported and shall be semi-outdoor type. The boiler shall be
capable of a peak generation of 110% of the MCR generation for a period of one (1) hour in a
shift. The operating excess air percentage at the outlet of the boiler shall be less than 30%.
1)
Boiler Feed Water
The boiler shall be capable of operating with the following feed water quality
requirements
pH
: 8.8-9.2
Oxygen
: 0.005 ppm
Hardness
:0
Total Iron
: 0.01 ppm
Total Copper
: 0.01 ppm
Total Silica
: 0.02 ppm
Hydrazine
: 0.01-0.02 ppm
Specific electrical conductivity
: 0.5 micro ohms / cm
At 25 °C measured after cation exchanger in the H + form and after CO2 removal
(max)
2)
Steam Purity
The boiler shall be capable of supplying uninterrupted steam at the MCR rating with
following steam purity levels.
* Total dissolved solids
* Silica (max)
:
:
0.1 ppm (max)
0.02 ppm
10 MW Biomass Based Power Plant
3)
ABEIL
Performance Guarantee Tests





Boiler efficiency at MCR on GCV basis while firing mustard stalks.
Boiler efficiency at MCR on GCV basis while firing cotton stalks.
Auxiliary power consumption under MCR operating conditions.
Steam purity for all operating loads.
Dust concentration in the flue gases leaving the ESP, while firing rice husk.
The boiler will be of multifuel type, with provision to burn individual biomass with
100%. The Stack shall be of RCC construction, 50 mtr high with total internal
refractory brick lining.
4.4.2
Turbo generator & Auxiliaries
The turbo generator shall be a bleed cum condensing machine. The bleed shall be at 2.5 Ata.
The following shall be the salient design parameters. The speed of the turbine shall be approx.
8000 rpm.
Steam flow at the turbine stop valve at turbine MCR (kg/hr)
Steam pressure at the turbine stop valve (Ata)
Steam temperature at the turbine stop valve (°C)
Condenser operating pressure (Ata)
Condenser cooling water inlet temperature (°C)
Power Factor (lagging)
Generation voltage (kV)
Ambient temperature for electrical equipment design (°C)
Parallel operation with grid
Grid voltage
Duty requirements
Condenser sizing
System frequency
Atmospheric Conditions
Maximum noise pressure levels at 1.0 mtr distance for any
Equipment from the Equipment surface shall be equal to or
Less than db (A)
4.4.3
: 50,000
: 64
: 480
: 0.1
: 32.0
: 0.8
: 11.0 + 10%
: 45.0
: Required with ASEB grid.
: 132 kV
: Continuous 8000 hrs.
: 30 tph
: 50 ± 5% Hz
: Dusty
: 85 dB(A)
Performance Guarantee Tests
The performance test shall be conducted for the following parameters as per ASME PTC 6
and DIN 1943.



Power output at generator terminals with the inlet steam parameters of 64 Ata and
480°C specified power factor and cooling water inlet temperature of 32°C. Both the
extractions shall be at the indicated Normal flow conditions.
Uncontrolled extraction pressure and temperature with the inlet steam parameters of
64 Ata and 480 °C.
Auxiliary power consumption under guaranteed conditions.
10 MW Biomass Based Power Plant



ABEIL
Cooling water consumption under guaranteed conditions.
Maximum temperature rise in the generator windings.
Heat rate under guaranteed conditions.
4.5
AUXILIARY PLANT AND EQUIPMENT
4.5.1
Biomass Handling
The fuel for the power plant is a rice husk and wood. There will be one separate bunker for
husk and wood. The fuel from the storage is conveyed to the boiler by a combination of belt
conveyors. The system shall have provision for returning the excess fuel to the storage yard
from the boiler. The fuel handling system shall be designed for a capacity of 16 TPH.
Allowable inclination for the belt conveyors is 18°. The belt speed shall be approximately 1.0
m/sec.
4.5.2
Ash Handling
The ash handling system envisaged for the power plant is of two types:


Gravity system for fly ash
Pneumatic System.
The ash handling system shall be designed to take care of 100% biomass burning. The total
ash quantity generated in the boiler, by the burning of husk is approximately 1875 kg/hr. This
ash content is maximum, as wood will generate only 280 kgs/hr of ash. Ash removed from the
grate is approximately 750 kg/hr and the fly ash quantity is approximately 1125 kg/hr. The ash
density is 120 kg/m³.
The ash received in the grate discharge hoppers will be around 500°C, with ash lumps of size
200 mm maximum. The ash from ash ridding hopper will be dry and powdery in nature and
occasionally with hot solids. The temperature of the ash will be around 200°C maximum.
The fly ash from Electrostatic Precipitator Hoppers will be dry and powdery in nature and
occasionally with hot solids. The temperature of ash will be around 200°C maximum.
The fly ash from the Air Heater Hopper will be dry and powdery in nature and occasionally with
hot solids. The temperature of the ash will be around 250°C maximum.
10 MW Biomass Based Power Plant
4.5.2
ABEIL
Cooling Tower
The cooling tower shall be RCC counter flow induced draft cooling tower of capacity of
1800 m³/hr capacity having two (2) cells. The cooling tower shall be designed for a cooling
range of 8°C, and an approach of 5 °C while operating under the atmospheric wet bulb
temperature of about 27°C. The cooling tower shall be of RCC construction. The RCC frame
of the tower shall be integral with the basin. The structure shall be designed for wind and other
load as per IS: 875 and earthquake resistance as per IS: 1893. The cooling tower shall be
carefully sited such that there is no re-entertainment of the vapors in to the cooling tower.
4.5.3
Pumps
The head/flow characteristic of pumps will be such that the head continuously rises with
decreasing capacity until a maximum head is reached at zero flow. Maximum runout flow
should at least be 130% of duty point flow.
The shut off head should be at least 1.1 times the duty point head and should not be more
than 1.2 times the duty point head.
The power curve should be non-overloading type with the maximum power occurring at or
near duty point or towards maximum runout flow.
NPSHR curve should be a continuously rising one in the range of operation, from the minimum
flow in the range to the maximum flow in the range. Required NPSH values shall not exceed
available values over the entire range from minimum to rated flow.
The efficiency curve should be fairly flat in the range of +1% of the BEP flow. The duty point
of the equipment should preferably lie in this flat region, but not at a flow higher than the BEP
flow.
4.5.4
Condensate System
The condensate from the surface condenser and the condensate from the process plant will
be used to meet the complete feed water requirements of the high-pressure boiler. Under the
normal circumstances the make up water for the cycle will be Demineralized water.
10 MW Biomass Based Power Plant
4.5.5
ABEIL
DM Plant
The DM plant shall be designed to have single stream with a capacity of 8 TPH. The DM plant
shall be designed based on the raw water analysis furnished elsewhere in this section of this
report. D.M.Tank capacity shall be 36 m3.
The demineralized water quality at the outlet of the DM plant shall be as follows:








Hardness (ppm)
:
pH @ 25 °C
:
Conductivity @ 25°C (microsiemens/cm) :
Oxygen (max) (ppm)
:
Total iron (max) (ppm)
:
Total copper (max) (ppm)
:
Total silica (max) (ppm)
:
Residual Hydrazine (ppm)
:
0
8.8-9.2
0.05
0.005
0.01
0.01
0.02
0.01-0.02
The raw water at the inlet of the DM plant will be delivered at a pressure of 3.0kg/cm². The
treated water at the outlet of the DM plant will be delivered at a pressure of 3.0 kg/cm².
All vessels shall be designed with adequate free boards. Only seamless pipe shall be used
wherever rubber lining is done. All fabricated vessels shall be designed according to IS
2825.The regenerants like Hydrochloric acid and Caustic Soda shall be stored in bulk in the
DM plant premises, and pumped to the DM plant for regeneration. Manual handling of the
regenerants shall be avoided to the maximum extent.
Adequately sized neutralizing pit shall be provided near the DM plant for collecting the
discharges from the DM plant and effectively neutralizing the same before pumping the waste
to the plant’s effluent treatment system.
4.5.6
Vessels & Heat Exchangers
The design shall be as per ASME Sec. VIII, HEI & TEMA. All heat exchangers and vessels for
steam application shall be designed for full vacuum conditions. The heat exchangers shall be
provided with startup vent connections. The design shall have provision for complete drainage
on both shell and tube sides. The heat exchangers shall be provided with emergency drains,
Tube & Shell side safety valves, and individual bypasses with manual valves.
10 MW Biomass Based Power Plant
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A minimum corrosion allowance of 1.6 mm shall be provided. The tube bundle shall be of
removable type. The tube material shall be stainless steel, unless otherwise specified in the
specifications.
4.5.7
Tanks
The power plant tanks will have storage capacities as required by design of the systems.
Tanks will be of the closed top type. Tanks will be fabricated in accordance with guidelines
established by API or AWWA as determined by the service. A corrosion allowance of 1.5 mm
shall be provided.
Overflow connections and lines shall be provided where required and will be atleast one pipe
size larger than the largest input line or combination of inputs that can discharge
simultaneously.
Maintenance drain connections shall be provided of an adequate size to facilitate drainage of
tanks within a reasonable time. Manholes where provided on tanks and pressure vessels shall
be of size 450 NB size. Ladders and cleanout doors shall be provided on large tanks. DM
water tank shall be internally lined with natural rubber or painted with three coats of Epoxy
Coating.
4.5.8
Piping
All piping system shall be designed as per ASME B 31.1. In addition statutory requirements of
Indian Boiler Regulations (IBR) shall be complied with for those lines under the purview of
IBR. Stress analysis shall be carried out for all possible operating modes and shall be as per
ASME B 31.1 requirements. Supports, guides, Directional Restraints and Anchors shall be
selected to satisfy all the operating conditions.
1)
Pipe Sizing
All piping shall be sized considering the allowable velocity and allowable pressure
drop in the system. The suggested flow velocities of various mediums are




Superheated
Saturated steam
Boiler feed water Pump suction
Pump discharge
Water
Pump suction
:
:
:
:
40 to 55 m/sec
15 to 30 m/sec
< 1 m/sec
2.5 to 4 m/sec
:
< 1 m/sec
10 MW Biomass Based Power Plant



2)
Pump discharge
Condensate
Pump suction
Pump discharge
Compressed air
Lube oil
Pump suction
Pump discharge
ABEIL
:
2.5 m/sec
:
:
:
0.6 to 0.7 m/sec
2.5 m/sec
12 to 18 m/sec
:
:
0.3 to 0.4 m/sec
1.0 m/sec
Piping Materials
The piping material selection shall be based on the following recommendations.








4.5.9
For temperature above 510 °C, SA 335 Gr. P22 shall be used.
For temperature 400 °C to 510 °C, SA 335 Gr. P11/P12/P22 shall be used.
For temperature 399 °C and below, SA 106 Gr. B/C or ASTM A-53 seamless
steel shall be used.
All pipe fittings other than those mentioned shall conform to ASTM A 234
standard and dimensions as per ANSI B 16.9 / B 16.28 / B 16.11
For cooling water, raw water, service water, safety / relief valve exhaust IS:
1239 / IS: 3589 ERW/EFW pipes shall be used.
For service air applications the piping shall be IS: 1239 Black Medium Class.
For instrument air applications: Galvanized pipe (Iron Pipe) to IS: 1239 Part I
shall be used.
The fittings for ERW applications shall be as per IS : 1239 Part II.
Insulation
All exposed portion of the plant which operate at temperature of 60°C and above during
normal operation shall be thermally insulated so that the temperature on the outer surface of
the cladding shall not exceed 20°C above ambient, based on an ambient temperature
indicated in site data. The specified insulation thickness shall not include the thickness of wire
netting, finishing cement or any other finishing or weatherproofing application. Insulation shall
not fill the contours of the expansion bellows. Piping and equipment that are not insulated but
having a surface temperature exceeding 50°C shall be insulated for personnel protection.
In refractory walls suitable expansion gaps shall be provided at regular intervals.
4.6
Civil & Structural
The reinforced concrete structures shall be designed in accordance with the latest version of
IS: 456, “Code of practice for plain and reinforced concrete”. The structural steel design shall
be as per IS: 800. The design wind speed and seismicity shall be in accordance with IS: 875
and IS: 1893 respectively.
10 MW Biomass Based Power Plant
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The structures shall be designed to withstand the calculated dead loads, live loads, along with
the wind and seismic loads in appropriate combinations recommended by the Codes. The
minimum dead and live loads for the design of the platforms and walkways shall be 500 kg/m².
Structural steel shapes, plates and other structural materials shall conform to IS: 800, with a
minimum yield strength of 25 kg/mm² the connection bolts shall conform to IS: 1367.
Welding electrodes shall be as per AWS. HYSD reinforcement steel bars shall conform to IS:
1786. All structural steel (IS 2062) and MS members will be painted with two coats of red
oxide zinc chromate paint and two coats of synthetic enamel paint.
All foundations shall be of the spread footing or mat type. Soil bearing capacity shall be 18
t/m² at 2 to 2.5 meter depth and settlement shall be 25 mm at a depth of 2.0 m below ground
level. The above soil bearing capacity shall be verified by soil investigation before final design.
The site is assumed to be relatively flat, requiring minimal grading and leveling (leveling and
grading upto ± 0.5 m). No major grading / leveling work is envisaged.
All excavation work shall be done by conventional manual methods or by mechanical
equipment method (wherever required). For substructures and superstructures ordinary
Portland cement (grade 43) will be used. Grade of concrete for steam turbogenerator
foundations shall be M-25 and all other foundations / pedestals / buildings etc. shall be of M20.
4.7
Electrical System
All equipment for the power plant shall be designed for satisfactory operation for a lifetime of
minimum 30 years under specified site conditions. All equipments shall be suitable for rated
voltage of ± 10% and frequency of 50 Hz with ± 5% variation and 10% (absolute sum)
combined voltage and frequency variation.
The generator shall be of synchronous type with brushless excitation system and shall be
designed for rated voltage and frequency of 11 kV and 50 Hz, with corresponding variations of
± 10% and ± 5% respectively. The generator shall have closed circuit air-cooled system with
external water circuit (CACW cooling) and the windings shall have class ‘F’ insulation, with
temperature rise limited to class ‘B’ insulation limits, under specified cooling water and
ambient air temperatures.
10 MW Biomass Based Power Plant
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Auxiliaries of the power plant shall be connected to the 415 V level, by providing one (1)
number 1.25 MVA, 11 / 0.433 kV distribution transformer. The surplus power from the power
plant, after feeding the in-house loads(10MW), shall be exported to the ASEB grid by stepping
up the power to 132 kV, through one number 12.5 MVA. 11/132 kV generator transformer.
Transmission system for 132 kV with necessary tariff metering and other terminal equipment
shall be arranged between the plant and the ASEB’s substation at Jagi Road.
It is envisaged to start up the power plant unit by installing 2x500 kVA DG sets.
Once the power plant is ready to take-up the loads, the TG set will be momentarily
synchronized with the DG set to avoid interruption of supply to the power plant auxiliary loads
and then the TG will be synchronized with the grid through 12.5 MVA 132 / 11 kV transformer.
The nominal voltage of main DC system for protection and control systems, turbine
emergency oil pumps and emergency lighting shall be 110 V.
UPS system with rated voltage of 220 V AC shall be envisaged, for meeting UPS power
requirements of the plant DCS and other instrumentation / control loads, emergency lube oil
pump.
All equipment shall comply with the applicable provisions of relevant IS/IEC/IEEE standards,
as listed elsewhere in this document.
1.
Breakers for various systems shall be as below:



132 kV breaker
11 kV breaker
415 V breakers
:
:
:
SF6 circuit breaker
VCB / SF6 CB
Air break circuit breaker
All connections at 11 kV (between 11 kV switchgear and generator / generator
transformer / distribution transformer) shall be carried out through 11 kV, UE grade,
armored, XLPE insulated cables. Connection between secondary of the distribution
transformer and the PCC / Panels shall be through non-segregated phase bus-duct,
with electrolytic grade aluminum bus-bars and aluminum alloy enclosure. All other LT
connections (power as well as control) shall be with PVC insulated, armored,
aluminum / copper cables.
10 MW Biomass Based Power Plant
2.
ABEIL
Sizing of cables shall be as follows:
Cables shall be selected to limit the maximum voltage drop at equipment terminals,
during normal operation and starting conditions, to be well within permissible values.
Cables in circuits controlled by circuit breakers shall be capable of withstanding the
maximum system fault currents till that breaker open by main protection. Fuse
protected cables shall withstand maximum let through fault current for fuse operating
time. 11 kV grade cables shall be suitable for carrying maximum earth fault current of
the 11 kV system for 3 sec.
Current rating of the cables shall be assigned considering continuous conductor
temperature of not more than 70°C for PVC and 90°C for XLPE. Cables should also
be sized to carry system fault current for the duration specified in above without
exceeding the temperature limit of 160°C for PVC and 250 °C for XLPE.
For 415 V system, ACBs shall be provided for rating 800A and above, and fuse switch
/ switch fuse unit shall be provided for lesser ratings. Motor feeders shall have fuse
switch / switch fuse units, over load relays and air-break contactors. Motor of rating
above 37 kW shall be provided with star-delta starters, depending on application, and
shall be provided with static motor protection relays.
Motor for auxiliaries shall be of three-phase induction squirrel cage type except for fan
motors, which can be of slip-ring type for ratings above 90 kW. All motors shall have
class ‘F’ insulation, with temperature rise limited to class ‘B’ limits under specified
ambient and voltage frequency conditions.
4.7.1
Fault Level
All equipment shall be designed to withstand the maximum fault, under voltage variation of ±
10%, 25 kA for 3 sec in 33 kV & 11kV systems and 50 kA for 1 sec in 415 V system.
Distribution transformer and all accessories shall be capable of withstanding for two seconds
without damage during any external short circuit at the terminal.
All switchgears, MCC & Distribution Boards shall be capable of withstanding the maximum
fault currents that may arise, duly considering the maximum fault levels on high voltage
system, negative tolerance on transformer impedance and maximum possible motor
10 MW Biomass Based Power Plant
ABEIL
contribution for maximum possible fault clearing time on ultimate backup protection but not
lower than one second in any case.
4.7.2
4.7.3
Degree of Protection




11 kV Switchgear
LT Switchgear
Switchgear located outdoors
LT busduct enclosure
:
:
:
:

Control panel
:

Push button stations
:


Synchronous generator
Induction motors
:
:
IP42
IP52
IP52
IP52 (in the indoor portion)
IP55 (in the outdoor portion)
IP42 (in air-conditioned area)
IP52 (in other area)
IP54 (indoor)
IP55 (outdoor)
IP54
IP54 (indoor)
IP55 (outdoors)
Neutral Grounding
11 kV system neutral earthling shall be low resistance earthed type to limit the earth fault
current to 70 A, which shall be earthed by providing neutral grounding resistor of the neutral of
the generator.
All 415 V transformer neutrals and 132 kV transformer neutral shall be solidly earthed through
bolted links.
The system shall be compatible for accepting / sending signals from / to DCS. Winding,
bearing and cooling circuit (where applicable) RTDs shall be hooked up to DCS for signal
processing and necessary trippings shall be arranged from DCS, for tripping of the
corresponding motor.
Signals from all transformers for winding temperatures, oil temperatures, oil level gauges,
buchholz relay outputs for alarm and trippings shall be brought to DCS.
Status (ON/OFF/TRIP) of all breakers, LT breakers in PCCs and all motor feeders shall be
brought to DCS, for plant monitoring. Control of motor feeders, as per system requirement,
shall also be arranged for control from the DCS system.
4.8
INSTRUMENTATION & CONTROL SYSTEM
The plant’s Instrumentation and Control system, based on Distributed Control System
philosophy, will be designed to provide monitoring and control capabilities to ensure safe and
10 MW Biomass Based Power Plant
ABEIL
reliable operation, minimize operator manual actions and alert operators to any conditions or
situations requiring manual intervention in a timely manner. The control functions shall be
backed-up by interlocks and safety systems, which cause pre-planned actions in case where
unsafe conditions develop faster than controls or the operator can be, expected to respond. All
I& C equipment will be of proven design and will be selected to achieve highest level of plant
availability and facilitate equipment maintenance.
All field control elements for modulating controls will have actuators of pneumatic type.
Signals from various process parameters are electrical signals generated by field mounted
electronic transmitters. The above signals are processed in the DCS cabinets to produce
electrical signal output of 4-20 mA, DC, which will be converted to control pneumatic signal of
0.2-1.0 kg/cm²(g), through E/P converters to operate the pneumatic actuators. All computation
and signal conditioning and control function generation will be configured in the DCS.
10 MW Biomass Based Power Plant
ABEIL
5. DESCRIPTION OF THE MECHANICAL SYSTEMS IN THE POWER PLANT
5.0
GENERAL DESCRIPTION
The proposed power system will consist of 1 no. High-pressure boiler of capacity,50 TPH, 67
ata 4850 C and 1 no. Bleed cum condensing steam turbine of nominal capacity 11 MW. The
steam pressure at the inlet of the turbine will be 64 ata and temperature 480 0C.
Apart from the boiler and turbogenerator, the power plant will consist of fuel handling system,
boiler feed water system, cooling water system, electrical system, power evacuation system,
control system, utilities like compressed air system, ash handling system, fire protection
system etc.,
5.1
BOILER SYSTEM
5.1.1
Boiler
The boiler will be designed for firing biomass like rice husk, and wood. The super heater outlet
steam will have a pressure of 67 ata and a temperature of 485 0C. The boiler will be designed
for outdoor installation. The boiler will have sub systems like pressure parts, feeding system,
firing system, draft system, feed water system, ESP and chimney.
5.1.2
Pressure parts
The boiler pressure part consists of a water-cooled furnace, boiler bank, steam and water
drums, primary and secondary superheaters, economizer, risers and down comers.
Basically the boiler will be a radiant furnace, Bi-Drum, natural circulation, semi outdoor type
with two-stage superheater. The boiler shall be designed with water cooled membrane / fin
welded walls and the refractory work shall be kept to the barest minimum possible.
No header shall be placed in the flue gas path. All headers in the boiler will have flat end
covers. A minimum of two hand holes for the purpose of cleaning and inspection shall be
provided, for each of the headers, either on the end covers or on the body of the headers.
The boiler will preferably be top supported with adequate provisions for the thermal expansion
of the boiler in all directions.
10 MW Biomass Based Power Plant
ABEIL
The boiler will be provided with one steam and one water drum and drums will be of fusion
welded type. Both the drums will be provided with Semi-Ellipsoidal dished ends fitted with 320
x 420 mm elliptical manways at either end. The manway doors will be arranged to open
inwards. The drum shell, dished ends and the manway doors will conform to SA 515 Gr. 70 or
equivalent material specification.
The steam drum will be liberally sized to assure low steam space loading, with adequate
space to accommodate the internals. The drum design pressure will have a minimum margin
of 6% over drum operating pressure.
The steam drum shall be provided with internals of proven design, shall be bolted type, and of
size that will enable removal through the manways. The system of internals consisting of the
primary and secondary separators will ensure steam of highest purity with dissolved silica
carry over limited to a maximum of 0.02 ppm, at all loads of the boiler. All the components of
the internals, except the dryer screens, shall be carbon steel and the dryer shall be of 304
stainless steel.
The necessary nozzle connections for the following, but not limited to, steam outlets, safety
valves, feed water inlets, continuous blow down, level indicators, chemical feeding, vents and
drains, sampling connections, down comers will be provided on the drums as applicable. All
nozzle connections on the drums will be of welded type and the feed water inlet will be
provided with a suitably designed thermal sleeve.
The necessary drum suspension / support arrangements shall be provided.
1)
Furnace – Water wall System
The Furnace envelope will be constructed of fully water-cooled membrane / fin welded walls
and adequately supported. The construction will be fully gas pressure tight, and the furnace
will be strengthened by providing buckstay and tie-bar system.
Necessary provisions will be made in the furnace for admitting the required quantity of overfire air at various levels.
Adequate number of inlet and outlet headers, with the necessary stubs, commensurate with
the arrangement of the furnace will be provided. The down-comers supply pipes and relief
tube sizing will be based on the circulation calculations.
10 MW Biomass Based Power Plant
2)
ABEIL
Bank Tubes
The bank design will be of inline arrangement and the tube spacing will enable easy removal
of the tubes in case of any failure. The bank tubes will be expanded into both the top and the
bottom drums, and the tubes after expansion will be bell mouthed. There will be adequate
approach space to the tubes of the bank for maintenance.
Adequate number of soot blowers will be provided to cover the maximum surface area of the
bank. The flue gas velocity in the bank area will be restricted to a maximum of 15 meter/sec.
3)
Superheater System
The super heater (SH) system will be of Two (2) stage design with interstage desuperheating
to achieve the rated steam temperature over 60 to 100% load range. The superheater will be
of convection or a combination of convection and radiation type arranged to give the minimum
metal temperature. The superheater pressure drop, the inlet and outlet header sizing,
arrangement and sizing of their respective inlet and take off connections will be so as to give
minimum unbalance and the tube element material selection will be based on the actual metal
temperature calculations.
4)
Attemperator System
The spray type attemperator system to control the temperature of the final superheater outlet
steam temperature within the specified value will be provided in between the two stages of the
superheaters.
The desuperheating system will be complete with all required control valve, bypass, piping and
supports, etc.
5)
Economizer
The Economizer will be located immediately downstream of the boiler bank. The design will be
of bare tube construction with inline, counter flow, and drainable arrangement.
The economizer will be designed for an inlet feed water temperature of 105°C. The coil
arrangement will take care of proper calculated end gaps to avert gas bypassing and the
consequent erosion of the element tubes. Tubes will be of seamless type.
10 MW Biomass Based Power Plant
5.1.3
ABEIL
Air Heater
The Air heater will be arranged as the last heat recovery section downstream of the
economizer. The Air heater will be recuperative type with flue gas flowing inside the tubes and
the combustion air flowing over the tubes. The air heater will be arranged with the tubes in the
vertical direction. The tubes except those required for staying purposes would be expanded
into the tube sheets on both ends.
The air heater arrangement will provide for adequate access for replacing the tubes.
Considering the high moisture in the flue gases, suitable precautions should be taken to
prevent the tube corrosion at the air inlet side of the air heater. If the air heater is designed
with more than a single pass in the airside suitable guide vanes will be incorporated in the
connecting ducting to prevent stratification. The Low Temperature bank of the Air-preheater
will be designed to prevent corrosion and the cold end material of the air heater tubes will be
Corten Steel.
5.1.4
Soot Blowing System
The boiler will be provided with a complete system of soot blowers to effectively dislodge
deposits from the heat transfer areas. The soot blowers will be motor operated with steam,
taken from the outlet of Superheater First stage, as the cleaning medium.
5.1.5
Fuel Firing System
The boiler will be designed for firing 100 % biomass. The layout of the fuel feeding systems
will be such that each system is accessible and maintainable. All feeders and distributors will
have independent drive arrangement.
1)
Fuel Feeding System
This power plant will be having a separate fuel handling system. The fuel feeding
system includes rack and pinion isolation gates, fuel storage silos with a capacity of
atleast for 60 minutes of MCR requirements. The excess fuel in the slat conveyor will
be returned to the storage yard through the return conveyor. The fuel input to the
boiler will be regulated by the feeding system.
10 MW Biomass Based Power Plant
ABEIL
The fuel feeding system in addition to the storage silo will consist of inlet chutes,
feeders, feed chutes and the distributor.
The fuel distributor will be pneumatic with provision to distribute the fuel uniformly
across the furnace. The distributor will have provision for onload adjustment of the
throw of the fuel. The distributor parts facing the radiation from the furnace will be of
AISI 310 type stainless steel. The number of feeder and distributor will be decided
based on the distributor capacity and the width of the furnace.
2)
Firing System
The firing system will consist of a spreader stoker with continuous ash discharge
travelling grate with variable speed drive. The drive system will have overload
protection.
5.1.6
Draft System
The draft system for the boiler will be suitable for producing a balanced draft with subatmospheric pressure conditions in the furnace.
The boiler will have one (1) x 100% capacity Induced Draft Fans, One (1) x 100% capacity
Forced Draft Fans and one (1) x 100% capacity Hot Secondary Air Fans making up the
complete draft system for the boiler.
1)
Forced Draft Fan
The forced draft fan will be a constant speed, horizontal, radial, backward curved
blades, drive motor with suitable starter. The fan flow control will be with inlet guide
vanes through servomechanism incorporating suitable linkages and power cylinder
housed suitably to prevent settlement of dust on links.
2)
Induced Draft Fan
The Induced draft fan will be horizontal, radial, with backward curved blades. The fan
flow control will be with inlet guide vanes / inlet damper through servomechanism
incorporating suitable linkages and power cylinder. IGV/damper operating links/drives
should be housed suitably to avoid settlement of dust or links. The fan will be driven
by a motor drive with a suitable starter. The fan speed will not exceed 1000 RPM. The
10 MW Biomass Based Power Plant
ABEIL
fan will be supplied complete with motor, common base plate for motor and fan,
coupling, etc.
The fan shaft will be of simply supported design and the minimum thickness of the
plates used in the construction of the fan will be 8 mm. The impeller will be hard faced
to avoid erosion of the impeller blades. The fan design temperature will be 200°C.
3)
Secondary Air Fan
The Secondary air fan will be constant speed, horizontal, radial, backward curved and
electric motor driven. The fan flow control will be with inlet guide vanes with pneumatic
cylinder for operation from control room. The fan will be direct driven, with speed not
exceeding 1440 RPM and will be complete with motor, common base plate for fan and
motor, coupling, etc. The fan shaft will be of simply supported design and the
minimum thickness of plate used in the fan will be 6 mm. This fan will handle hot air
and will take suction from the air heater outlet duct.
5.1.7
Ducting System
All ducts will be rectangular in cross section and will be of welded construction, properly
stiffened. All the air ducts will be fabricated from steel plates of minimum 5 mm thick, and all
flue ducts will be of minimum 6 mm thick. The duct plate material will conform to IS 2062.
Carbon steel plates will not be used for ducting system if the operating temperature of flue gas
exceeds 425°C. The duct corners will be stitch welded internally and full welded on the
outside.
All ducts will be suitably stiffened and reinforced on the outside and designed to withstand the
pressures encountered. Ducts will be sized considering a maximum velocity of 18 m/sec for
hot air and flue gases and 12 m/sec for cold air. The duct design consideration will include the
operating internal pressure, medium temperature, dead loads, ash loads, live loads, seismic
loads, expansion joint reaction etc.
Dampers, in the ducting system, will be provided as required, for the proper operation of the
boiler. All dampers will be of the `louver’ or butterfly type with the necessary frames, shafts,
blades, bearings, linkages, seals etc.
All fans will be provided with isolation dampers at the discharge ends for online maintenance.
10 MW Biomass Based Power Plant
5.1.8
ABEIL
Chemical Dosing System
The boiler will be provided with a tri-sodium phosphate based high pressure (HP) dosing
system and a hydrazine and ammonia based Low Pressure (LP) dosing system. The HP
dosing system will continuously add the chemicals to the boiler water and to maintain the
phosphate reserve and to increase the boiler water pH.
The LP dosing is done to the feed water preferably in the deaerator storage tank to scavenge
the traces of oxygen and to increase the feed water pH.
5.1.9
Electro Static Precipitator
The boiler will be equipped with an Electro Static Precipitator, which will remove the dust and
ash particles from the flue gas, before the ID fan could handle it. The efficiency of the
precipitator will be 98% and the dust concentration at the outlet of the ESP will be 115
mg/Nm3.
5.1.10 Chimney
The reinforced concrete chimney will be constructed to exhaust the flue gas to the
atmosphere. The size and height of the chimney will be to suit the gas flow and the local
pollution control norms.
5.1.11 Fuel Handling System
Fuel from the yard will be reclaimed through dozers / front end loaders and will be fed on to
the ground conveyor (BC1). The conveyor BC1 will discharge the fuel on to the conveyor BC2
that subsequently will deliver the fuel on to the slat conveyor SC1. From SC1, the fuel will be
fed to the boiler. The excess fuel will fall on to the conveyor BC3 and taken to the yard.
5.1.12 Ash Handling System
The ash handling system is provided for the ash collected from the following region:
*
*
*
*
Travelling grate hopper
Plenum chamber
Air heater hopper
ESP hoppers
10 MW Biomass Based Power Plant
ABEIL
The ash collected in the plenum chamber is extracted by rotary valves and conveyed to a silo
by pneumatic conveyor system.
The ash collected from the air heater and ESP hoppers will be transported to Ash Silo by
rotary valves and pneumatic conveyor.
5.2
TURBO-GENERATOR SYSTEM
5.2.1
Steam Turbine
The proposed power plant will be with one 11 MW turbogenerator. The turbine will be a bleed
cum condensing type and running at a high speed. The generator speed will be 1500 rpm.
Hence, the turbine will be coupled with the generator through a reduction gear unit.
Steam is admitted into the turbine through an emergency stop valve actuated by hydraulic
cylinders. The turbine speed is controlled by an electronic governing system. The turbine
exhaust pressure will be 0.1 ata.
The turbine will be preferably single cylinder, single exhaust, bleed condensing type. All casing
will be horizontally split and the design will be such as to permit examination of the blading
without disturbing shaft alignment or causing damage to the blades.
The design of the casing and the supports will be such as to permit free thermal expansion in
all directions. The blading will be designed to withstand all vibrations, thermal shocks, and
other loading that may be experienced during service and system disturbances. The blades
will be machined from forged bars or die forged and the materials used will be chromium
steels consistent with proven experience and standards.
The glands will preferably of labyrinth type and sealed with it. A vacuum system required by
the design will be provided. All piping and components of shaft seal and vacuum system will
be sized for 300 percent of the calculated leakage. Steam leaving the glands will be
condensed in seal steam condenser. It will be possible to inspect and replace the end seals
without opening the casing and without damaging the thermal insulation.
1)
Bearings
The Turbine will be provided with liberally rated hydrodynamic radial and thrust
bearings. The radial bearings will be split for ease of assembly, and of the sleeve or
10 MW Biomass Based Power Plant
ABEIL
pad type, with steel shell backed, babbitted replaceable pads. These bearings will be
equipped with anti-rotation pins and will be positively secured in the axial direction.
The thrust bearings will be of the steel backed babbitted multiple segment type,
designed for equal thrust capacity in both directions.
A liberal flow of lube oil under pressure will be supplied to all the bearings for
lubrication and cooling.
2)
Lubrication and control oil system
A pressure lubrication and control oil system will be furnished for the turbo generator
unit to supply oil at the required pressure to the steam turbine, gearbox, generator and
governing system. Oil in the reservoir will be maintained at an appropriate
temperature when the TG set is idle by providing suitable electric heaters and
temperature controls.
The oil system will include the following:









3)
Main oil pump preferably driven by the turbine shaft.
A 100% capacity AC motor driven auxiliary oil pump arranged to cut in
automatically if the oil pressure falls to a preset value. This pump will also meet
the requirements during the start up and shutdown.
A D.C. motor driven emergency oil pump of sufficient capacity to provide
adequate lubrication in the event of a failure of the unit AC motor driven pump.
This pump also will cut in automatically at a pre set value of the oil pressure.
Two 100% duty oil filters arranged in such a way by means of transfer valves
that it is possible to clean one oil filter while the other is in service with
continuous flow.
Duplex 100% capacity oil coolers with changeover valves.
An accumulator to maintain sufficient oil pressure, during servo control
transients and while standby pump accelerates from idling to full speed.
Oil storage and settling tank with adequate reservoir capacity, duplicate
strainers, level indicators with float switches and alarm contacts, vent and oil
mist eliminators.
Flow and temperature indication for outlet oil from bearings and bearing metal
temperature indication for all bearings.
Centrifugal oil purifier.
Oil coolers
The oil coolers will be water-cooled with a duplicate arrangement and changeover
valves. The coolers will be of shell and tube type.
10 MW Biomass Based Power Plant
ABEIL
The coolers will be constructed in accordance with TEMA class C. The provided
surface area will be adequate to cool the oil with Inlet cooling water temperature at 35
°C even with 20% of the tubes plugged.
4)
Filters
Full flow oil filters will be used downstream of the coolers and will be piped in a
parallel arrangement with a continuous flow transfer valve. Filtration will be 10
microns nominal. Filter cartridges will be designed for minimum pressure drop and
suitable for maximum discharge pressure of the oil pumps.
5)
Oil reservoir
The interior of oil reservoirs will be descaled and rust proofed with a permanent
coating. Reservoirs with top mounted equipment will have sufficient rigidity. All
openings for piping will be made dust and waterproof.
6)
Oil purifier
A centrifugal type oil purifier will be provided for the removal of water, sediments and
other oxidation products. The purifier will be a separate complete package.
7)
Steam Turbine Governing System
The turbine governing system will be electro-hydraulic or electronic designed for high
accuracy, speedy and sensitive response. The electrical/electronic and hydraulic
component of the control system will be selected on the basis of reliability over a wide
range of operating conditions.
All components used will be well proven to assure overall system reliability and will be
designed for easy and quick replacement when necessary. The governor will ensure
controlled acceleration of the turbo generator and will prevent overspeed without
tripping the unit under any operating conditions including the event of maximum load
rejection.
The governor will also ensure that the unit does not trip in the event of sudden
frequency fluctuation in the grid and also sudden grid failure / load through off.
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ABEIL
The governor will have linear droop characteristics with a suitable range for stable
operation and will have provision for adjusting the droop in fine steps.
The governing system will have the following important functions:





8)
Speed control
Overspeed control
Load control and speeder gear.
Steam pressure control
Master trip for Low Steam Pressure, Low Vacuum, High Vibration,
eccentricity, over speed, Differential Expansion etc.
Condenser
The condenser will be of non-contact surface type condenser designed as per the
requirements of Heat Exchange Institute Standards for Steam Surface Condensers
and ASME Section VIII division 1. Condenser shell shall be cylindrical made of steel
plate and tubes shall be 19 mm O.D. and 18 BWG admiralty brass. Heat transfer
surface shall have 10% margin for tube plugging over and above fouling factor.
The condenser will be sized to condense the maximum quantity of exhaust steam (i.e.
when the extraction is minimum) with the inlet cooling water temperature at 32°C upto
a maximum of 40°C. (with part load operation).
The condenser design and supply will be complete with the neck, expansion joint,
condensing chamber and tubes, tube sheets, hot well, water boxes, water side, valve,
air removal system and accessories, rupture disc, Teflon padded sliding support,
bolted and hinged water box cover at front and back.
The condenser neck will be suitably designed to reduce the inlet steam velocity to
ensure low-pressure drop and to protect the tubes from impingement of steam.
The condenser will be adequately designed for the external pressure; stiffeners and
bracing wherever required would be provided.
The tubes will be provided with supports to eliminate any serious tube vibration
problems and sagging. The tubes will be expanded into the tube sheets at both the
ends and flared.
10 MW Biomass Based Power Plant
ABEIL
The condenser neck will be connected to the turbine exhaust hood with a properly
designed stainless steel expansion bellow which allows free expansion of the
condenser unit without exerting undue thrust on the turbine exhaust hood and
facilitate independent supporting of the condenser on the foundations without
resorting to springs. Manholes will be provided for facilitating inspection of tubes both
at steam and watersides.
The hot well at the condenser bottom will have a minimum capacity of 2 minutes
storage while handling maximum quantity of exhaust steam.
The hot well will be provided with level gauges and connections for condensate
extraction and drain. A suitably designed level control system will be provided, with
provision for alarm tripping etc.
The condenser will be of divided water box design, and the water boxes will provide
easy accessibility to the tubes. It will be possible to clean one section of the tubes with
the condenser load suitably reduced. The circulating water inlet and outlet
connections will be of adequate size to reduce the waterside pressure drop to the
minimum.
The water boxes will be coated with epoxy resin, internally to prevent corrosion from
the cooling water and will be provided with sacrificial anodes.
9)
Condenser Air Removal Equipment
One steam operated hogging ejector of single stage will be furnished for the initial
pulling of the vacuum in the system. The capacity will be so as to reach 80 – 90 %
vacuum in 20 minutes time.
Hogging Ejector will be, without any condenser, discharging to the atmosphere
through a suitably designed silencer.
2 x 100% steam operated main ejectors of two-stage twin element type with inter and
after condensers will be provided.
10 MW Biomass Based Power Plant
10)
ABEIL
Condensate Extraction Pumps
Two numbers 100% capacity condensate extraction pumps to pump the condensate
from the condenser hot well will be provided.
Both the pumps will be driven by electric motors and the flow will be controlled by
discharge throttling.
The pumps will be of centrifugal, horizontal, single stage type and will be supplied
complete with all valves, inlet and discharge piping with manifolds.
11)
Gear Box
The reduction gearbox, if required, between the turbine and the generator will be of
proven design preferably of double helical arrangement with service factor of 1.2
It will be capable of transmitting the maximum rating of the set and be able to
withstand 20% over speed over a period of minimum five minutes. The gearbox will
also be designed for the short circuit condition of the generator.
All bearings of the gearbox will be readily renewable and it will be possible to inspect
the bearings and the gears readily without disturbing the shaft alignment.
Illuminated sight glasses will be provided to inspect the lube oil drain from each
individual bearing. The gearbox design will be as per the requirements of AGMA.
5.3
COOLING WATER SYSTEM
The cooling water is used in the surface condenser for condensing the steam, turbine
auxiliaries for cooling, boiler auxiliaries like feed pump, ID fan etc., for bearing and gland
cooling.
The cooling water after cooling the equipment will be cooled, so that the same water can be
reused again. For this purpose, a wet cooling tower of induced draft type will be used. The
cooling medium in the condenser will be raw water. The cooling water temperature rise in the
systems will be limited to 10 Deg C. The hot return water will be distributed uniformly over the
cells of the cooling tower.
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ABEIL
The raw water from the Canal/ Borewells will be pumped to the cooling towers after suitable
treatment, which will cool the cooling water. For this purpose, two nos (2 x 100%) pumps of
100% capacity each will be provided. The raw water will be stored in a raw water reservoir.
The water will be pumped to the cooling tower fore bay. The water from the fore bay will then
flow to the suction of the cooling water pumps. The cooling water pumps will have the head to
meet the pressure drop in the entire circuit. The cooling water will also be taken to the
turbogenerator, boiler area etc., through pipes of adequate size.
Isolation valves of type gate / butterfly will be provided at different locations, for easy
maintenance. Similarly suitable expansion joints will be provided in the piping, to facilitate
dismantling and also to take care of the misalignments / thermal expansion of the pipes.
The water in the cooling tower basin is prone for algae growth. If algae grow in the cooling
tower water, it will affect the equipment, which are cooled by the cooling water. To prevent the
growth of algae chlorine will be dosed in the water at appropriate quantity. To maintain the salt
concentration in cooling water to acceptable limits, blow down will be given periodically.
5.4
CHLORINATION SYSTEM
The Chlorination system will have two vacuum feed chlorinators, with one as standby. Each
chlorinator will be connected independently to individual evaporators, which in turn be
connected to two chlorine containers. The water for the Chlorination system will be supplied
from the auxiliary cooling tower pump discharge header. The capacity of chlorinators will be
base on a maximum dosing rate of five ppm on the total rate of main and auxiliary cooling
water systems.
5.5
CONDENSATE WATER SYSTEM
The condensate from the surface condenser will be collected in the hotwell. The condensate
will be pumped to a condensate tank by two condensate extraction pumps (CEP). One of the
pumps will be working and other serving as stand by.
The dissolved gases like oxygen etc., present in the condensate, when heated to the
saturation temperature, will dissociate from the condensate and will be vented out. Traces of
oxygen will be removed by dosing hydrazine solution. The make up water for the system will
10 MW Biomass Based Power Plant
ABEIL
be DM water. The deaerator will have a storage tank with capacity equivalent to 20 minutes
MCR requirements of the boilers.
The feed water from the deaerator storage tank will be pumped to the economizer by one feed
water pump with one 100% stand by, each of capacity 40 m3/hr.
5.6
Pressure reducing and Desuperheating stations:
One No. PRDS with manual by pass will be provided for supply of low-pressure steam-tosteam Jet Air Ejector and Turbine glands. One No. Separate PRDS with manual by pass will
be provided for supply of start up steam and pegging steam to deaerator. Pegging steam will
be automatically cut in when pressure of extraction steam from turbine drops below required
pressure.
5.7
DM WATER PLANT
The DM water, which will be used as the make up water, will be produced in the DM Plant.
The capacity of the plant proposed is 8 m3/hr. The DM plant will consist of sand filters,
activated carbon filters, anion and cation exchangers, degasser and mixed bed exchangers.
Two raw water pumps will pump the raw water. The regeneration of the DM plant will be 8
hrs/day. The DM water from this plant will be stored in a Storage tank of adequate capacity.
The acids and alkali required for the regeneration will be sufficiently provided in the plant. The
effluent from the DM plant will be neutralized in a neutralization pit. The outlet water from the
neutralization pit will have a pH of 7.0.
5.8
SERVICE WATER AND POTABLE WATER
The service water is required for general wash, gardening, toilets etc., and the potable water
required for the power plant will be taken from the outlet of the activated carbon filter in the DM
plant.
5.9
CRANES AND HOISTS
Cranes, hoists and monorails will be provided in the following areas of power plant for
maintenance purposes.
Hand operated overhead travelling crane in the turbo-alternator building. Monorails with hoists
for handling boiler feed water pumps located under the deaerator structure, Monorails with
10 MW Biomass Based Power Plant
ABEIL
hoists for handling impellers and motors of ID fans. Monorails with hoists for handling
impellers and motors of FD/SA fans. Monorails with hoists for handling condenser
components.
The TG building would be provided with a hand operated overhead travelling crane of 15 / 5
tones capacity and about 16mts span for maintenance of all equipment in the TG building. The
capacity would be adequate to handle all equipment / component in the TG building including
the generator stator which is the heaviest equipment to be handled. The auxiliary hook would
handle the smaller components in the TG building such as lube oil coolers, ejectors, gland
steam condenser and ejector condenser. This crane will be hand operated.
5.10
COMPRESSED AIR SYSTEM
Instrument air is required for various pneumatically operated control valves in the boiler and
TG systems. The air is required to be supplied at a pressure of 5 to 6 Kg/cm2 (g) at the various
consumption points. Instrument air from the air compressors will be dried by heatless air drier
making use of the hot air from compressor for regeneration of the drier medium (desiccant).
Service air is required for cleaning of various areas of the plant. Accordingly, the service air
connections are proposed to be provided in the Boiler area, TG building, workshop, DM Plant
etc.
Considering the quantity of air required for the power plant, two (2) air compressors will be
required. These compressors will supply the instrument air and the required service air.
Compressors will be of non-lubricated type.
5.11
AIR-CONDITIONING AND VENTILATION SYSTEM
The following areas in the power plant will be air-conditioned.
-
The main control room housing the control panels of boiler and TG, switchyard control
panels and auxiliary panel room housing the associated system cabinets.
Instrument maintenance room
The above areas will be air-conditioned using window type/spilt type air conditioners. The
capacity of the air conditioning units will be decided based on the area of the room and heat
load dissipated in the room.
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ABEIL
The following mechanical ventilation systems are proposed to be provided for various
buildings/rooms in the power plant.
5.12
Two (2) axial type power roof ventilation of adequate capacity each for the TG
building.
Two (2) centrifugal type supply air fans of adequate capacity for the switch gear room,
battery room etc.,
Suitable number of propeller type exhaust fans in the water pump house, DM Plant,
filtration plant, workshop and stores.
FIRE PROTECTION SYSTEM
The following systems of fire protection are proposed to be provided for the power plant:
-
Hydrant system for the entire plant.
High velocity water spray (HVWS) system for transformers and lube oil tanks.
Carbon dioxide flooding system for the generator of the steam turbine.
Portable fire extinguishers.
The fire protection will basically comply with the Tariff Advisory Committee (TAC)
requirements, enabling rebate in the insurance premium rate.
5.12.1 Reserve Storage
Reserve storage of 350 m3 will be provided in the raw water storage tank with a suitable
partition to cater to the water requirements of the fire protection system. In view of the above,
pump house elevation will also be suitably lowered at the location of the fire water pumps as
compared to the floor elevation at the location of the raw water pumps.
5.12.2 Hydrant System
The hydrant system will comprise the following:
-
One motor driven and one diesel engine driven firewater pump. These pumps will take
the suction from the water storage tank. As per TAC regulations, the above hydrant
pump capacity will be adequate to cater to the total number of Hydrants provided in
the plant.
-
Two motor driven jockey pumps (one working and one stand by) each of 10 cum./hr
capacity will be provided to keep both the hydrant and HVWS system mains
pressurized. These pumps will also take suction from the raw water tank.
-
External fire hydrants in all areas of the power plant including boilers, TG, DM Plant,
control building, switch yard, canteen, stores, and workshop and administration
buildings.
10 MW Biomass Based Power Plant
-
ABEIL
Internal fire hydrants in all storied buildings and structures such as Boiler platforms,
TG building, canteen and administration building.
5.12.3 High Velocity Water Spray System
The HVWS system is proposed to be provided for the transformers and the steam turbine lube
oil tank. Water supply to the HVWS system will be provided by one motor driven pump. Since
the parameters for the HVWS system will be identical to that of the hydrant system, the diesel
engine driven pump described in the hydrant system, can serve as a common standby for both
HVWS system and hydrant system.
The HVWS system will consist of a number of high velocity water projectors mounted on a
pipe network around each transformer and steam turbine lube oil tank. Water supply to each
pipe network from the HVWS system mains will be through a deluge valve. The HVWS
system for the transformers will be of automatic type. In case of fire, quartzoid bulb sensors
mounted around the transformers will automatically actuate the deluge valve on the spray
water line. The HVWS system for the turbine lube oil tank will be manually actuated. Smoke
and heat detectors will be used strategically.
5.12.4 Portable Fire Extinguishers
It is proposed to provide an adequate number of wall/column mounted type portable fire
extinguishers in various areas of the plant including the control room, administration building,
canteen, stores, workshop, pump house, etc., These portable fire extinguishers would
basically be of carbon dioxide and dry power type.
5.12
TECHNICAL DATA FOR MAJOR MECHANICAL EQUIPMENT
5.12.1 Boiler
Number of boilers
MCR capacity
tph
Peak generation
tph
Steam pressure at SH outlet
Kg/ cm2 (g)
0C
Steam temp. at SH outlet
0C
Feed water inlet temp.
Boiler efficiency on mustard or cotton stalks GCV%
Gas temperature at the outlet of AH 0C
:
:
:
:
:
:
:
:
One (1)
50
50
67
485 +/- 5
105
78.5
150
10 MW Biomass Based Power Plant
ABEIL
5.12.2 Turbogenerator
1)
Steam Turbine
Power rated
Inlet steam pressure
Inlet steam temperature
Exhaust steam pressure
Bleed steam pressure
Alternator speed
2)
kW
Kg/ cm2 (g)
0C
ata
Kg/ cm2 (g)
rpm
:
:
:
:
:
:
Surface, divided Water box
30.5
0.1
2100
32
40
:
:
:
:
:
Centrifugal
35
0.1
6.0
2
:
:
:
:
:
:
:
:
:
Induced draft
One (1)
2200
32
42
0.5
2.5
Two (2)
27
:
:
:
:
:
Two (2)
40
1000
Multistage Centrifugal
Electric motor
Condensate Extraction Pump
Type
Capacity
Suction pressure
Discharge pressure
Number of pumps
4)
11000
64
480
0.1
2.5
1500
Surface Condenser
Type
Steam flow tph
Steam pressure ata
Cooling water flow tph
0C
Tube material
Outlet cooling water temperature 0C
3)
:
:
:
:
:
:
m3/hr
ata
Kg/cm2 (g)
Cooling Water System
Cooling Tower:
Type
Number of cooling towers
Capacity
Cooling water supply temperature
Cooling water return temperature
Cooling water return pressure
Evaporation loss and blow down %
No. of cells
Design wet bulb temperature 0C
5)
m3/hr
0C
0C
Kg/ cm2
Boiler Feed Pumps
Number of pumps
Capacity
Head
Type
Drive
m3/hr
MLC
10 MW Biomass Based Power Plant
6)
Deaerator
Type
Capacity
Outlet water temperature
Operating pressure
Design pressure
Steam inlet pressure
Oxygen content in the outlet water
7)
tph
0C
Kg/cm2 (g)
Kg/cm2 (g)
Kg/cm2 (g)
ppm
:
:
:
:
:
:
:
Spray cum tray
40
105
1.0
3.0
1.5
0.007
m3/hr
hrs/day
:
:
8
8
DM Water Plant
Capacity
Regeneration
8)
ABEIL
DM Water Specification
Hardness
:
Nil
Chloride
:
Nil
Silica as SiO2, max.
ppm
:
<0.02
Iron as Fe, max.
ppm
:
<0.01
Conductivity at 20 Deg.C max,
:
0.5 microsiemens/cm
pH
:
9.0 to 9.4
DM water plant will be complete with activated carbon filter, anion, cation exchangers
degassers, pumps, mixed bed exchangers, acid/alkali tank and pumps, raw water pumps etc.,
10 MW Biomass Based Power Plant
ABEIL
6 DESCRIPTION OF ELECTRICAL AND I & C SYSTEMS
6.0
GENERATOR
The generator will be rated 11 MW, 11 kV, 50 Hz, 3 pH, and 0.8 pf. The rated speed will be
1500 rpm. The generator winding will have class F insulation. The winding will be star
connected. The star point will be earthed through a resistor to limit the fault current to full load
current. The generator will be air-cooled with an air -water heat exchanger. The generators will
have brushless excitation system.
All the six terminals of the turbo generator winding will be brought out for external connections.
These connections will be taken to the Lightning Arrestor (LA) VT by suitably rated bus bars.
The LAVT will house necessary current transformers, voltage transformers, lightning arrestor
generator neutral grounding resistor, etc. Further connections to the generator circuit breaker
in the 11 kV switchgear will be by means of suitably rated 11 kV cables.
All six terminals of the steam turbine-generator will be brought out of the turbine pedestal wall,
through seal-off bushings. The connections between generator terminals and seal-off bushing
will be by open busbars. Outside the TG pedestal a short run of segregated phase busduct will
be provided on the phase side of the generator to house the current transformers and give
tap-off connections to LA & PT cubicle. This phase side bus duct will be terminated with a
cable termination box for further connection by 11 kV cables upto the 11 kV switchgear.
Similarly, a short run of segregated phase bus duct will be provided on the neutral side to
house the current transformers. The neutral formation and the disconnecting link will be
provided in an adaptor box after the current transformers. A short single-phase bus duct will
be provided between the adapter box and the NGR cubicle.
The generator shall be of closed circuit air-cooled type housed in an IP55 (CACW) enclosure
and driven by steam turbine through a speed reducer. The necessary coupling and coupling
bolts shall also form part of the supply.
1)
Stator
The stator frame shall be a single piece consisting of a cylindrical casing of welded plate
construction, reinforced internally in the radial and axial direction by stationary web plates
10 MW Biomass Based Power Plant
ABEIL
making the entire frame perfectly rigid. The stator winding shall be of the double layer lap type
with Class ‘F’ insulation.
2)
3)
Rotor
a)
The generator rotor shall be forged from a single piece ingot of special alloy steel
carefully heat treated to obtain excellent mechanical and magnetic properties and a
comprehensive series of ultrasonic examinations on the rotor body shall be done to
ensure that absolutely no inadmissible internal defects are present and that the material
meets the quality standards.
b)
The design and construction of the rotor shall be in accordance with the best modern
practice and shall be fully described in the offer.
c)
The insulation between turns of field winding shall be consistent class F insulation.
d)
The field poles shall be provided with adequate damper windings to ensure stability under
fault conditions and to meet {(I2°C) 2*t} value of 20.
Earth Terminal
Two Nos. or more Earth terminals shall be provided. The earth terminals shall be designed to
terminate Galvanized iron conductors. The size shall be as specified in IEC 34-1.
4)
Speed Regulation
The moment of inertia of the alternator together with that of the turbine shall be sufficient to
ensure stability and the speed regulation specified in the section- covering turbine for full load.
5)
Shaft
a) The generator shaft shall be made of best quality forged alloy steel, properly treated. The
shaft shall be of ample size to operate at all speeds, including maximum over speed
without vibration or distortion and shall be able to withstand short circuit and other
stresses without damage. To prevent the flow of harmful shaft currents damaging the
bearings, suitable shaft earthling shall be provided.
b) A complete set of test reports covering metallurgical strength, crystallographic and
ultrasonic and boroscopic tests performed in each shaft during various stages of its
manufacturing shall be furnished as also the complete specifications of the shaft forging
material and its design parameters such as stresses and critical speed.
10 MW Biomass Based Power Plant
ABEIL
c) The generator shaft shall have a suitably shaped flange for coupling to the
turbine/gearbox shaft. The coupling shall be forged integral with the shaft and the shaft
coupling shall comply with the requirements of IEC for shaft coupling. All coupling bolts,
nut and nut guards for coupling shall be furnished by the vendor. The alignment limit for
the shaft shall be as per the latest NEMA/DIN standards.
6)
Space Heaters
Suitably rated heaters shall be installed within the enclosure of the generator. Location and
the maximum temperature of the heaters shall be such that no damage can be caused to any
insulation. Heaters shall be suitable for operation on a single-phase 230 V AC supplies.
A suitable thermostat controlled switch shall be mounted on or adjacent to the stator frame for
the switching off the heaters.
7)
Excitation System
a) A brushless exciter shall be used and it shall be mounted on the out board end of the
generator frame. A static voltage regulator shall be included to control the voltage of the
synchronous generator by varying the current supplied to the field.
Details of the
equipment shall be furnished along with the bid.
b)
A self-excited static excitation system shall be provided. A high speed, fully tropicalised,
printed circuit, drawout type, automatic digital/analog voltage regulator shall be provided.
It should be complete with necessary sensing PT’s, cable entries, cast resin type current
transformer, adjusting rheostats, auto/manual and on/off selector switches. The following
meters of class one accuracy of size not less than 144 x 144 mm shall be provided in the
excitation cubicle and also in the unit control panel.
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Exciter Field Current
Generator Field Current
Generator Field Voltage
Generator Terminal Voltage
c) The excitation system shall be provided with the following features:
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Generator voltage control
Excitation current control
Excitation buildup during startup and fields suppression shutdown.
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Limiter for the under excited range and delayed limiter for overexcited range.
Feature for parallel operation of the generator with the grid system incorporating
power factor control mode and feature for islanding operation during sudden grid
failure.
d) The system offered shall have the following facilities:
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Manual mode of operation
Auto mode of operation
Follow on mode to have smooth transfer from one mode of operation to the other.
Auto/Manual changeover facility shall be provided. For manual mode voltage lower/raise
pistol grip type / spring return type switch shall be provided. Following minimum alarms
shall be transmitted to the unit control desk. The excitation system shall have diode
protection relays to detect failure of the Rotating Diodes.
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8)
AVR fault
AVR automatic changeover to manual
Diode failure
Accessory Equipment
a) Terminal boxes shall be provided to enclose the leads and current transformer. The
terminal boxes shall be adequately designed to accommodate termination of Bus
duct/single core 11 kV XLPE cable per phase and its termination kits. The generator shall
be provided with various RTD’s (temperature sensors) installed various in the stator
winding with leads, brought out to a separate terminal box.
These RTD’s shall be hooked upto the temperature scanner in the control panel.
Necessary vibration transducer, displacement transducers with transmitters shall be
provided which shall be hooked up to the control panel in the control room.
b) Adequately rated neutral grounding resistor / neutral grounding transformer shall be
supplied, the resistor shall be stainless steel edge wound type mounted in shielded safe
enclosure. A current transformer shall be provided for ground fault current measurements
for protection. The rating of the resistor shall be furnished.
c) Necessary surge capacitors and lightning arrestors shall be provided for generator
protection. The surge capacitors shall conform to the latest IS 2834 and shall be rated
10 MW Biomass Based Power Plant
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0.25 Micro Farad. The capacitors shall be suitable for indoor mounting and shall be
provided with built-in discharge resistor.
6.1
SURGE PROTECTION EQUIPMENT
The surge protection equipment would comprise lightning arrestors with suitable discharge
characteristics to suit the generator insulation level in parallel with suitably rated capacitor for
smoothening the rate of rise of impulse voltage. The lightning arrestors will be located as close
as possible to the generator terminals.
6.2
POWER EVACUATION
The power generated from the proposed power plant will be evacuated at 132 kV through 1
No. 100% capacity transformer.
The generator is earthed through a resistor to limit the earth fault current to acceptable limits
so that generator core is not damaged. Hence this system will be of non-effectively earthed
type.
6.3
11 KV SWITCHGEAR
The power generated from the generator will be fed to an indoor metal clad 11 kV switchgear
through suitably rated cables.
The 11 kV switcher will comprise of draw out type circuit breakers housed in indoor, metal clad
cubicles. The calculated fault level of the 11 kV generator bus is 500 MVA. The circuit breaker
proposed is 750 MVA/40 kA for the generator bus. The breakers will be of either SF6 or
vacuum type.
6.4
POWER TRANSFORMERS
Based on a maximum estimated load of about 12.5 MVA to be evacuated at 132 kV, one No.
12.5 MVA, 11 kV/132 kV, Ynd11, Z = 8% transformers will be provided for interconnection with
the grid. The transformer will be ONAN cooled. It will be provided with OLTC on the HV side
having ± 10% range in steps of 1.25%. The HV neutral will be solidly earthed. The HV side
will be provided with bushings and LV side with cable box.
10 MW Biomass Based Power Plant
6.5
ABEIL
132 kV SWITCHYARD
The 132 kV switchyard shall consist of single busbar arrangement, with one incomer from
transformer and one outgoing feeder for connecting the 132 kV line from ASEB. The fault
level at the 132 kV bus works out to 750 MVA. However, as the minimum available circuit
breaker rating at 132kV is 630 A, SF6 circuit breakers suitable for 26.3 kA breaking capacity
will be provided. The isolators will be horizontal center break type with motor operated closing
mechanism. The current and potential transformers will be of oil filled type.
The switchyard will be of outdoor type with galvanized steel lattice structures.
The station auxiliary switchgear will feed the following switchgear / MCCs / Distribution boards:
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Boiler MCC
Cooling Tower MCC
TG MCC
Ash handling system DB
DM Plant DB
Switchyard DB
Lighting DB
Crane DB
Administrator Building / Guest House
Fuel Handling System.
Loads of the power plant auxiliaries and other station loads will be fed directly from the station
auxiliary switchgear.
The main one-line diagram for the power plant, enclosed indicates the auxiliary power
distribution. The various auxiliaries of the power plant would be supplied at the following
nominal voltages depending upon their ratings and functions:
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6.6
415 V, 3 phase, 3 wire effectively grounded AC supply for motors.
240 V, 1 phase, AC supply for lighting, space heating of motors and panels, single phase
motors, etc.
230 V, 1 phase grounded AC supply for AC control circuits.
110 V, ungrounded DC supply for control and indication.
415 V SYSTEM
The 415V 3 phase, 3 wire power for the 415 V auxiliaries would be obtained from the auxiliary
transformer. The 415 V switchgear would be of metal enclosed design with symmetrical short
circuit rating of 50 kA.
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All the power and motor control centers would be compartmentalized and would be of double
front execution and fully draw-out design with all the circuit components mounted on a
withdrawal sheet metal chassis. The circuit breakers would be air break type. Motor starting
would be direct on-line. Motors rated above 125 kW will be controlled by air break, electromagnetic type contactors provided with ambient temperature compensated, time lagged, hand
reset type thermal overload relays, having adjustable settings and backed up by HRC fuses
for protection against short circuits. The switchgear would be located in the control building.
6.7
STATION AUXILIARY TRANSFORMER
The auxiliary transformer would be 1 no. 1.5 MVA 11 / 0.433 kV Dyn11 common for all units.
It will supply power to the 415 V auxiliaries of the power plant STG, CW/ACW system, water
treatment plant, lighting, battery chargers, etc. The neutral of the transformer would be solidly
earthed. The auxiliary transformer would be ONAN type and would be provided with ± 5% off
circuit taps in steps of 2.5% on the HV side.
6.8
CONTROL & PROTECTION SYSTEM
6.8.1
Generator
The following protections are proposed to be provided for the generators:
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6.8.2
Differential protection
Stator earth fault protection
Loss of field protection
Negative phase sequence current protection
Impedance or voltage restrained overcorrect back-up protection
Rotor earth fault protection
Reverse power protection
Over voltage protection
Low forward power protection (for steam turbine generation only)
Under voltage protection
Overload alarm
Capacity 11 kV / 415 V Station Auxiliary Transformer
The following protections are proposed for the station auxiliary transformer:
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3-pole high set overcorrect protection on H.T. side.
D-pole I.D.M.T overcorrect back-up protection on H.T. side
Single pole instantaneous overcorrect earth fault protection
10 MW Biomass Based Power Plant
6.8.3
ABEIL
12.5 MVA, 11 / 132 kV Transformer
The following protections are proposed for the above transformer:
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6.8.4
Differential protection
Directional back-up phase overcorrect protection on HV and LV side
REF protection
Overfluxing protection
Buchholz, oil and winding temperature protection
132 kV Lines
Distance protection would be provided at the generating station side.
6.8.5
132 kV Busbars
High impedance, circulating current type relay scheme with main and check features would be
provided for the 132 kV busbars.
6.9
EMERGENCY POWER SYSTEM
Two Nos. diesel generator sets, 500 kva each, 415 V, 50 Hz will be provided to make
available emergency power supply to the station in case of black-out. The diesel generator
set will be connected to the 415 V switchgear as shown in SLD.
6.10
DIRECT CURRENT SUPPLY SYSTEM
The Direct Current System (DC) is the most reliable source of supply in the power station and
will be used for the control and protection of the power plant equipment.
The DC system will be used for the following:
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Electrical control of equipment and indications on the control panel.
Power supply to the essential auxiliaries of the power plant and turbines in case of AC
power failure.
Power supply to the following services in case of total AC power failure.
Communication system
DC lighting of strategic areas for safe personnel movement.
The battery sizing will be done to cater to the following type of loads:
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Momentary load for 1 minute
Emergency load for 2 hours
Continuous load for 10 hours
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Under normal conditions, the battery will be on float charger. The float charger is connected to
a distribution board and meets the requirements of DC load. In case of additional demand of
load or AC supply failure; the battery will meet the requirements of DC loads.
The boost charger will be designed to charger the fully discharged battery in 12 hours before
putting it back on float charge.
A set of two 110V battery blanks (100% standby) of suitable capacity with two float and boost
chargers and a direct current switch board will meet the DC load of power plant. The batteries
would be of stationary lead acid type, complete with racks, porcelain insulators, intercell and
interior connectors. The chargers would be of silicon rectifier type with automatic voltage
control and load limiting features.
6.11
UNINTERRUPTED POWER SUPPLY (UPS) SYSTEM
One battery bank of suitable capacity with associated two 100% float and boost chargers and
invertors would be provided to derive uninterrupted 230 V AC power supply through suitably
rated invertors. The batteries will be sized to cater to the loads for 30 minutes. This power
supply will be used to feed essential services such as control, instrumentation, and
annunciation etc. requiring UPS power. The type of batteries and chargers for the UPS
system would be similar to that described above for the DC system.
6.12
LIGHTING
The power station lighting system would comprise the following:
1)
Normal 240 V AC Lighting System
The lighting circuit in the normal 240 V AC lighting system would be fed through 415/433 volts,
3 phase, 4 2wire lighting transformers connected to a 415 V distribution system.
Lighting transformers in each area in the power station would be fed from a convenient 415 V
switchgear/MCC located nearby. About 20% of the lighting fixtures will be connected to
receive emergency AC supply. During failure of normal AC supply, these fixtures will be fed
from emergency AC supply derived from the DG set.
10 MW Biomass Based Power Plant
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Direct Current Emergency Lighting
Direct current emergency lights would be provided at strategic points in the power station, viz.,
near entrances, staircases, the main control room, etc. These would be fed from the station
110 V DC systems and would be off when the normal AC power supply is available. These
would be automatically switched on when the normal AC supply fails.
The proposed illumination levels for various areas are given below:
Area
Control room
Switchgear / MCC rooms
Power house
Outlying areas
Transformer yard & switchyard
Boiler Area
Air/Gas compressors house, DM plant
Workshop
Canteen
Stores
Parking area and cycle stand
Battery room
Cable vaults
Administration building and office rooms
Roads
6.13
illumination Level
500 lux.
200 – 250 lux
200 lux.
50 lux.
10 – 20 lux.
50 lux
200 lux
300 lux
150 lux.
100 – 150 lux.
70 lux.
150 lux.
100 lux.
350 lux.
10 lux.
CABLING
All cables would be selected to carry the load current under site conditions, with permissible
voltage drop. In addition, high voltage cables would be sized to withstand the short circuit
current.
The following type of cables would be used:
For 11 kV generator system: 11 kV unearthed grade, single / multi-core, stranded aluminum
conductor, cross linked polyethylene insulated, screened, Aluminum wire / galvanized steel
wire armored and overall PVC sheathed cables conforming to IS 7098 Part II.
For medium voltage and low voltage power cables: 660 / 1100 V grade, stranded aluminum
conductor, HR PVC/PVC insulated, color coded.
PVC sheathed and Aluminum wire/galvanized steel wire armored overall PVC sheathed
cables conforming to IS-1554.
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Control, protection, signaling and supervisory cables would be of 650/1100 V grade, annealed
high conductivity stranded copper conductor, PVC / elastomer insulated and overall
PVC/elastomer sheathed. Signaling and supervisory cables would be twisted pairs and
screened wherever required.
The inner and outer sheaths of all the above cables would have fire retardant capabilities.
Cables would be laid in steel ladder type cable trays, suitably supported in the control building,
STG building, other auxiliary buildings. In outdoor areas, cables would be laid in racks/built-up
trenches or would be buried directly underground depending on the environment.
6.14
LIGHTNING PROTECTION SYSTEM
A lightning protection system would be provided as per IS 2309 and Indian Electricity Rules.
The protections would consist of roof conductors, air terminals and downcomers and would be
provided for tall structures such as the STG building.
6.15
FIRE ALARM SYSTEM
A fire alarm system would be installed to provide visual and audible alarm in the power station
for fire detection at the incipient stage. This system would comprise manual call points located
at strategic locations in areas which are normally manned, and automatic smoke and heat
detectors located at important points such as the cable vault, the control room, switchgear
room etc., to detect fire at an early stage, and provide visual and audible alarm.
6.16
FIRE CONTAINMENT
Strategic areas in the plant would be separated by adequately rated firewalls. All openings for
switchgears and cable entry would be sealed by fireproof seals to prevent spread of fire from
one area to another.
6.17
COMMUNICATION SYSTEM
In view of the high noise level in power plants, public address system is not recommended.
For effective communication in the plant, automatic dial type telephones would be set up,
having the following features:
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6.17.1 Inter-communication Telephones
This system would comprise a telephone exchange and an adequate number of dial type hand
set stations located in soundproof cabins with suitable flashing indication on top of it to
indicate incoming call.
The handsets in the control room would be provided with priority service facility to enable them
to have immediate access to any of the handsets even if the handsets are already engaged. A
private automatic exchange for communication with outside parties would also be provided.
6.17.2 Walkie-talkie Sets
Walkie-talkie sets would be provided for key personnel. This would, however require special
permission from the statutory authorities.
6.18
SAFETY EARTHING SYSTEM
A Safety earthling system consisting of a buried mild steel conductor earthling grid would be
provided for the power plant transformer yard, switchyard and other outlying areas. These
would be connected to the earth grids in various buildings. The buried earthling grid would be
further connected to earthling grid would be further connected to earthling electrodes buried
under ground and located at representative points.
The earth electrodes will be 40 mm diameter and 3000 mm long G.I rods and the main earth
conductors will be 75 mm x 12 mm flats. The earth conductors when buried will be of mild
steel and galvanized wherever exposed to atmosphere.
6.19
INSTRUMENTATION AND CONTROL
6.19.1 General
The instrumentation & control (I&C) system proposed to be provided for the power plant would
facilitate centralized automated and safe control of the power plant comprising of the Boilers,
TG and their auxiliaries, condensate system and the cooling water equipment. The I&C
system would be designed to ensure maximum efficiency, reliability, safety and availability so
that optimum plant control could be achieved with minimum staff.
The I&C system basically comprise of the following:
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Functionally distributed microprocessor based I&C system
Hard wired annunciation system
Analytical Instruments
Control desks, panels and system cabinets
Power supply systems
Local instruments
6.19.2 Distributed Instrumentation & Control System (DCS)
The functionally distributed microprocessor based I&C system will have a hierarchically
distributed structure and will integrate the various plant functions/systems such as
measurements system, closed loop control system, open loop control system, sequence of
events record, data base system, fault monitoring diagnosis, man machine interface etc.,
The above I & C system will have complete redundancy at processor level and communication
level. At the sensor level, triple redundancy will be provided for all critical closed and open
loops and single sensors will be provided for all other open and closed loops. For critical
analog controls, Freudian selection from three measurements will be adopted while for critical
open loops triple sensors with two out of three logic will be provided. Considering the high
reliability of presently available processors, no further redundancy by way of hard-wired back
up systems is proposed for open loops.
1)
The DCS shall include the following main subsystem
a)
Control and Data Acquisition Subsystem for monitoring and control of process
parameters like flow, temperature, pressure, level, power, current, voltage, analytical
and status.
The system shall also platform the plant supervisory functions like performance
calculations, utility display, operator guidance message displays, logs, historical
storage and retrieval etc., as specified in the subsequent chapters.
b)
Sequence & interlock, safety sub-system for monitoring and executing sequence
operation, plant shutdown, interlocks and plant start-up.
c)
Operator / Engineer interface sub-system for operator guidance message displays
and remote control, for tuning, configuring, programming and maintaining the system.
d)
Redundant Communication sub-system for interconnecting all the sub-system.
e)
The closed loop sub-system for continuous action on valves or other mechanical
devices which alter the plant operating condition to bring the plant parameters to
stable condition.
10 MW Biomass Based Power Plant
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ABEIL
The open loop sub-system for operation on various inter related drives of plant safely,
automatically and sequentially with the interlock and protection functions being
available all the time under all conditions of operation to avoid mal-operation and to
increase the plant availability.
The system shall communicate with the temperature scanners, other system using PLC in
serial communication mode using MODBUS protocol mode for monitoring/interlocking
purpose.
Functionality of these subsystems described in the corresponding chapters of the
specification.
Programmable Logic Controllers (PLC) or other special control devices shall be incorporated
in the subsystems.
These controllers shall be full informationally compatible with the DCS and shall allow an
information exchange through a mutual DCS/PLC Data Highway and corresponding gateways.
The list of alarms shall be sufficient for providing safe plant operation.
2)
DCS General Characteristics
a)
Process Controller Fire Characteristics:
The word “process controller file” refer to any combination of microprocessor
associated memory, data acquisition and output devices which can be configured to
perform a set of control and/or logic function, data acquisition, calculation and
complex analog & discrete strategies.
Means shall be provided to ensure the loss of power supply of any controller file does
not result in loss of memory requiring manual reconfiguration, without error, during a
power outage.
b)
The minimum design features shall include but not limited to the following:
Redundancy shall be provided to the processing controller unit, power supply, I/Os for
critical signals and communication modules.
Redundancy shall also be provided for the data highway connections and serial
interfaces.
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Power supply used for interrogation with field devices shall also be redundant.
All input and output modules shall be short circuit proof.
The system shall be arranged so that the failure of any monitoring device or control
components or spurious intermediate grounding in the signal path shall not open the signal
loop nor cause the loss or malfunction of signal to other devices using the same signal and
unrelated control loops.
Necessary grounding facilities shall be available with the system; to take care of the earthling
related problems.
The design of the control system and the related equipment shall adhere to the principle of
fail-safe operation at all system levels. Fail-safe operation signifies that the loss of signal, loss
of excitation or failure of any component shall not cause a hazardous condition and at the
same time occurrence of false trips.
Upon restoration of power, the system will initialize itself to the established configuration and
operation. The contractor shall provide detailed explanation on system features provided for
power failure recovery.
If a transmitter fails for an analog input value exceeding preset limits, means shall be provided
to create an alarm and initiate appropriate protection action, such as transfer to manual or any
other protective action. It shall be possible to assign high or low limits to each analog input;
should a transmitter exceed either limit it shall be possible, through configuration, to transfer
the affected protections of the system to manual.
The system shall be able to withstand the electrical noise and surge as encountered in actual
service conditions.
Detailed marshalling cabinets shall be provided on as required basis for termination of all
analog and digital inputs to the system and all analog and digital outputs from the system.
A minimum of 20% spare terminals and a minimum of 20% additional modules shall provided
in excess of the total requirement of the system design.
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The system shall include self-surveillance and monitoring facilities, diagnostic features, tools
etc., so that a failure / malfunction shall be diagnosed automatically, and giving the details to
the operator stations.
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Closed loop control execution shall be done within 250 msec.
Sequence control/interlocks scan time shall be within 100 msec.
All the open loop shall be scanned at the rate of less than 1 sec.
DCS and PLC sampling time shall be adjusted after selection of the DCS and PLC
types.
Provision shall be included to produce a clear text, hard copy record of the detailed
configuration of each file.
6.19.3 Annunciation System
All abnormal operating conditions leading to unit shutdown will be simultaneously annunciated
on the distributed microprocessor based control system as well as on the conventional alarm
fascia units mounted on the control panel.
Additionally, group control function (i.e. related to the sub-system as a whole or the main
equipment) and individual equipment failure will be annunciated on the alarm fascia in the
control panel. All individual or subsidiary control function failure will be annunciated on the
DCS.
For safety and protection logic's, contacts will be taken only from primary sensing devices,
wherever feasible. Alarm contacts will be derived from the measurement signal using limit
value monitors.
6.19.4 Control desk and panel
The main control room in the control building will house the necessary control desks and
panels. The various I&C system cabinets will be housed in the auxiliary control room adjacent
to the main control room. The programmers console, computer cabinets, disc cabinets,
printer's etc., will be located in the computer room.
The control desks will incorporate CRTs with associated keyboard, illuminated push button for
pumps, dampers, valves, TG control devices etc., auto manual stations, control switches, push
buttons and synchronizing equipment for the boiler and TG. The control panels will be of
simplex free standing type and will house indicators / recorders for all controlled parameters
10 MW Biomass Based Power Plant
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and certain important non-controlled parameters, annunciation windows for all trip conditions
and critical process conditions and ammeters for all large capacity motors.
1)
Operator Stations
The operator main interface to the control system shall be through operator stations
consisting of color CRT’s mouse/trackball and keyboards. In addition certain softwareassigned and hard-wired recorders shall be installed if required. The operator station
shall be suitable for Industrial Duty.
Non-disk based Man-machine interface is preferred.
2)
Capabilities
Capabilities of a minimum 100 process graphic displays will be provided. This figure
does not include detail display, group display, trend display, alarm list and
maintenance displays.
3)
DCS Highway Communication Requirements
A redundant network communication link (data highway) shall be provided. The data
highway shall provide the means by which process I/O, management information and
control information is accessible to the operator interface and to all other control files
and other highway devices. In the event of failure on one link, communication shall
continue without disturbance to on-going operation.
6.19.5 Power Supply
The complete I&C system would basically be designed to operate on 110 V AC supply which
would be provided from the uninterrupted power supply (UPS) system incorporating necessary
batteries, chargers, inverters etc., Certain other voltages required for the system, e.g. 24 V DC
power supply required for contact interrogation, 48 V DC required for certain electronics cards,
etc., will be derived from the 110V AC power supply made available from UPS system.
6.19.6 Local Instruments
In addition to the above, all necessary local instruments such as pressure, temperature and
level gauges, pressure, temperature, level and flow switches etc., will be provided in the power
plant to enable the local operator to supervise and monitor the equipment operation.
10 MW Biomass Based Power Plant
1)
ABEIL
Temperature Instruments
All temperature elements shall be provided with thermowells fabricated out of bar
stock of minimum SS 304 material. Any pipe lines less than 4” nominal bore shall be
increased locally to 4” size to install thermo wells.
Local temperature gauge shall be generally mercury in steel filled type, weatherproof,
with 150 mm dia dial gauge size, with shatterproof glass. Filled type with capillary
tubing shall be minimum of SS 304 with stainless steel flexible armoring. The gauges
shall have accuracy of ± 1 % FSD.
Duplex type thermocouples or RTD shall be used wherever required.
Adequate design care has to be taken to ensure thermal conductivity between
thermowell and temperature measuring element.
Thermocouples shall be as per ANSI MC 96.1 and shall be of 14 AWG magnesium
oxide insulated grounded type. For temperature above 800 dec. the sheath shall
made of Inconel 600. For temperatures above 800 dec. the sheath shall be made of
SS 316. The thermocouples shall be selected as follows:
a)
b)
c)
Copper – Constantan (ISA-TYPE T) for ranges : - 200 to 200°C
Chromel – Constantan (ISA-TYPE E) for ranges : - 200 to 600°C
Chromel – Alumel (ISA – TYPE K) for ranges :- 600 to 1200°C
RTD shall be three wire type with platinum element with 100 ohms resistance at 0
dec. calibrated as per DIN 43760.
Twin element sensors, if used, shall have two separate conduit entries.
2)
Pressure Instruments
Pressure gauges shall have an accuracy of ± 1% of FSD. These shall be weather
proof with dial size of minimum 150 mm and shall have features like screwed bezels,
externally adjustable zero, over range protection and blowout discs.
Pressure gauge sensing element shall be minimum of SS 316 and moving parts of SS
304. For important applications, 250 mm dial size shall be used. The glass shall be
10 MW Biomass Based Power Plant
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shatter proof. Bidder shall provide snubber / siphon along with the pressure gauges
wherever required.
Pressure transmitters – smart type with a minimum turndown ratio of 1:30 with local
indicator shall be electronic capacitance type or piezoelectric resistance type with
minimum of SS 316 element material and with a over range protection of minimum
130% of range.
Direct mounted pressure switch shall have element diaphragm or below of minimum
of SS 316 material with ½” NPTF connection.
3)
Level Instruments
All gauge glasses shall be steel armored reflex or transparent type with body and
cover materials of carbon steel as a minimum and tempered imported borosilicate
glass.
Differential pressure transmitter shall be used for level measurement.
Level switches shall generally be external ball float type with flanged head.
For remote level indication of drum, a separate level transmitter shall be employed
which will be connected to a digital indicator with LED and barograph display.
4)
Flow Instruments
Flow measurement shall be with flow nozzles for Main steam flow and thin plate
square edge concentric orifice plate mounted between a pair of weld neck flanges of
minimum 300 pounds ANSI rating with flange taps for other measurements. The
material of the orifice plates shall be SS 316.
Meter runs shall have sufficient straight line as per BS-1042.
DP type flow transmitter shall normally be electronic capacitance / piezo – resistive
type and smart type with a turndown ratio of minimum 1:30
10 MW Biomass Based Power Plant
5)
ABEIL
Control Valves
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Control valves shall normally be Globe type. Other types like butterfly valves,
ball valves, angle valves, 3 way valves, etc., shall be selected as per service.
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Minimum body and flange rating of control valves shall be as per piping class.
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Body material, as a minimum, shall be as per piping specifications.
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Valve seat leakage shall be as per ANSI B 15.104.
-
Leakage of shut down valves shall be Class VI, as a minimum and leakage
for control valves shall be Class IV.
-
Valve positioners wherever used shall be side mounted force balance
pneumatic type.
-
For electronic instrumentation, I/P converter shall be used along with
pneumatic positioners.
-
Self actuating regulators for flow, pressure and temperature shall be used
where loads are constant and shall be of precision controls.
The power cylinders shall be double acting piston modulating type, trunnion mounted,
with linear cam characteristics and provision for reversal action. The piston rod shall
be hard chrome plated high strength steel. The driving equipment shall be in “STAY
PUT” mode on air failure. The power cylinders shall be supplied with positioners, limit
switches and position transmitters.
10 MW Biomass Based Power Plant
7
ABEIL
ENVIRONMENTAL IMPACT AND POLLUTION CONTROL
The type of pollution, which affects the environment, emanating from the power plant can be classified
as follows:




7.1
Air pollution
Water pollution
Thermal pollution
Noise pollution
THE POLLUTANTS GENERATED FROM THE POWER PLANT ARE
*
*
*
*
*
Dust and particulate matter in the flue gas
Fly ash from the hoppers
Furnace bottom ash
Effluent from water treatment plant
Sewage from the plant
CONTROL METHODS FOR AIR POLLUTION
7.2.1
Dust and particulate matters
The pollution control norms stipulates a maximum dust concentration of 115mg//N.cu.mt. The
proposed power plant will have an Electrostatic Precipitator (ESP), which will separate the
dust from the flue gas and has an efficiency of 98%. The dust concentration is the flue gas
leaving the ESP will be maximum 115 mg/Nm3.
The dust concentration level in the chimney will be periodically monitored. Corrective steps will
be taken, if the concentration is not as per the acceptable limits.
7.2.2
Sulphur-di-oxide and Nitrogen-di-oxide
The main fuel in the proposed plant is Bio Mass, which does not have significant Sulphur in it.
Hence, the Sulphur dioxide will not be produced. However, the stack height will be as per the
local pollution control board stipulations. The nitrogen-di-oxides are not produced in firing.
7.2.3
Fly Ash and Bottom Ash
The ash collected from the bottom of furnace (bed ash) and the ash collected in the air heater
hoppers and ESP hoppers are taken to an ash silo through a series of conveyors. The ash
from the silo will be disposed off to farmers, who can use the ash as manure for the crops.
10 MW Biomass Based Power Plant
ABEIL
CONTROL METHODS FOR WATER POLLUTION
1)
Effluents from Water Treatment Plant
The water drained from the water treatment plant will have to be treated so that the water let
out is neutral (pH 7.0). To achieve this the water drained from the water treatment plant is
pumped to a neutralization pit. The neutralization pit will have acid resistant brick lining.
Depending on the quality of water collected in the pit, either an alkaline medium or acidic
medium will be pumped into the pit to neutralize the water.
2)
Boiler Blowdown
In order to maintain the solid concentration in the boiler feed water, two types of blow down
are employed in the boiler. One type is continuous blow down and the other intermittent blow
down.
The blow down water will be at a temperature of 100 0C. The quantity of blow down will be
around 1.5 tph. This water can be taken to the effluent ponds, where it will get cooled
naturally.
3)
Sewage from the Power Plant Buildings
The sewage from the various power plant buildings will be taken to a common septic tank
through trenches. The sewage from the septic tank will be disposed off through concrete
trenches. As the sewage is taken in trenches the soil will not get contaminated.
7.3
CONTROL METHODS FOR THERMAL POLLUTION
The water used in the surface condenser to condense the steam will be cooled in a cooling
tower of either induced or forced draft type. The water let out from the cooling tower will have
a temperature very close to the ambient.
CONTROL METHODS FOR NOISE POLLUTION
The major source of noise pollution in the power plant power plant is from the following:
Rotating equipments like ID, FD and SA fans
-
Feed pumps
Boiler and superheater safety valves
Start up vent
Steam turbine
10 MW Biomass Based Power Plant
7.4.1
ABEIL
DG Sets
As per OSHA standards, the sound level from the rotating equipments shall be 85 to 90 dBA.
The rotating equipments will be designed to achieve this.
The start up vent, safety valve outlets and the DG sets will be provided with silencers to
reduce the noise level to the acceptable limits.
The power house building will be constructed suitably to keep the noise level within the
acceptable limits.
Promoters are aware of their social obligations and will be establishing an effluent treatment
plant to treat its liquid effluents.
The Pollution Control Board norms for air, water and sound is given below:
Tolerance Limits for Discharge of Trade Effluents
Tolerance Limits for discharge of Trade
Effluents
Characteristics
Inland Surface Water
On land for Irrigation
100
200
2100
2100
5.5-9.0
5.5-9.0
40 at the point of
discharge
45 at the point of
discharge
Oil and grease (mg/lit.)
10
10
Biochemical Oxygen Demand (BOD) for
5 days at 20 0C
30
100
Suspended solids (mg/lit.)
Dissolved solids-Inorganic (mg/lit.)
PH value
Temperature (0C)
Chemical
(mg/lit.)
Oxygen
Demand
(COD)
250
Chloride (as CL) (mg/lit.)
1000
600
Sulphates (SO4) (mg/lit.)
1000
1000
10 MW Biomass Based Power Plant
ABEIL
Ambient Air Quality Standards
Concentration (mg/m3)
Characteristics
SPM
So2
CO
NOX
Industrial and mixed use
500
120
5000
120
Residential & Rural
200
80
2000
80
Sensitive
100
30
1000
30
Emission Standards for Boilers
Capacity of Boilers (tons/h)
Particulate Emission Limits (mg/Nm3)
Less than 2
1600
2 to 15
1200
More than 15
150
This requirement is applicable for boilers using any type of solid fuel. In the case of industries
where particulate emission control are adopted to the limits prescribed, the stack height can
be relaxed to H = 74 Qp0.27, where Qp = Particulate emission in Tons per hour.
Permissible Noise Levels
Exposure Duration per Day
Sound Level dB (A)
8
90
6
92
4
95
3
97
2
100
1
102
10 MW Biomass Based Power Plant
ABEIL
8. POWER PLANT LAYOUT
8.1
CRITERIA FOR THE POWER PLANT LAYOUT
The general criteria for the power plant layout are as follows:
8.2
a.
The main steam piping to the turbogenerator shall be as short as possible. This is to
avoid excessive pressure and temperature drop in the steam line, which would affect
the turbine performance. Also, the material used will be alloy steel, which is very
costly.
b.
The length of the HT cables from the TG hall to the switchyard shall be minimum.
c.
The length of the slat conveyor from the storage area to the boiler etc. has to be
minimum. This is to reduce the auxiliary power consumption and the cost of the
equipment.
d.
Fuel storage yard shall be far away from the equipment so that there will not be any
dust nuisance.
e.
The switchyard, ash handling area and Fuel storage handling area has to be
accessible by roads.
BOILER LAYOUT
The layout for the boiler 1 x50 tph will be on the eastern side of the Plant. The feeding system
for fuel will be located in the boiler front. The operating floor for the boiler will be concrete and
at a elevation of 5 Mts. from the ground level. The boiler will be provided with 800 mm width
floors, wherever required.
The boiler will be top supported. The economizer and the air heaters will be located just after
the boiler bank one over the other. The air heater will consist of two blocks. Suitable space will
be provided and provision made for cleaning of the air heater tubes. The boiler feed water
pumps will be located below the deaerator storage tank, at the ground floor of TG building.
The feed water control station will be located in the boiler operating floor. The chimney height
will be decided based on the local pollution control norms.
8.3
TG BUILDING LAYOUT
The TG building will be located adjacent to the boiler area. The TG building will be sized to
accommodate the 11 MW turbogenerator and its auxiliaries. The turbine will be located at an
elevation of 6 Mts. from ground level. The building will be steel structure with regular roof with
side cladding. The floors will be made from pre cast slabs, which gives better appearance and
10 MW Biomass Based Power Plant
ABEIL
the installation time will be less. The condenser will be located just below the TG at ground
level. The condenser extraction pumps and the evacuation system will also be located at the
ground floor. The TG building will be provided with a Crane for lifting the turbine parts for
maintenance.
8.4
ELECTRICAL AND CONTROL ROOMS
Both the electrical and control rooms will be located in the TG building. The battery charger
room and office will also be located at this floor at elevation 6 Mts. The location of the control
room will be such that the boiler and the turbine will be clearly visible from the control room.
8.5
FUEL STORAGE AREA
Power plant shall have a planned fuel storage yard to store the fuel quantity
8.6
ASH HANDLING SYSTEM
The ash handling system consists of scrapper conveyor, belt conveyors and screw conveyor.
The ash from the travelling grate hopper, plenum chamber, air heater hopper and the ESP
hoppers will be collected and conveyed to a main ash silo which will be located close to the
chimney.
8.7
SWITCH YARD
The biomass power plant shall have a well planned power evacuation switchyard of 132 kV.
10 MW Biomass Based Power Plant
ABEIL
9. PROJECT SCHEDULE AND IMPLEMENTATION
9.0
PROJECT IMPLEMENTATION
9.1
PROJECT SCHEDULE
The schedule for the implementation of the biomass power project of Amrit Bio Energy and
Industries Ltd Jagi Road in Mayong Circle of Marigaon district in Assam with a capacity of 11
MW is enclosed. The project schedule indicates the various activities, which includes
Engineering, Detailed Engineering, Procurement, Erection and Commissioning of the project.
The project needs 18 months from the date of financial closure and placement of orders for
critical items like, Boiler and Turbine.
9.2
PROJECT MANAGEMENT
Engineering Management system, is a functional strategy developed to meet the tasks of the
engineering division keeping in view the overall project and the company’s objectives.
It is a set of planned and well-defined systems and procedures for each activity and subactivity for engineering tasks to complete the project from feasibility, conceptual design,
detailed engineering upto commissioning and operation of the plant. The following major
constituents of the Engineering management systems are being used for the execution of this
project:
Division of Responsibility & Authority, which defines the role and responsibilities against the
tasks identified for the engineering services, project engineering and Quality Assurance &
Inspection services in various disciplines such as Civil, Mechanical, Electrical, Controls and
Instrumentation.
Engineering and Monitoring System covers identification of various Engineering activities and
sub-activities both pre-award and post-award of the main plant equipment for this project.
The monitoring of the progress reports and look ahead planning is made on the basis of
Scheduled dates against the actual date of completion of the activities or anticipated dates to
complete the activities for every month.
10 MW Biomass Based Power Plant
ABEIL
Vendor Drawing Control System provides the status reporting and monitoring for Vendor
submitted drawings, which give the clue to identify the vendor drawings, falling in different
approval categories, drawings which are over due for submission by the vendor, drawings
which are pending for transmittal of the comments / distribution etc. This is very important from
the point of vendor progress monitoring.
Drawing Control Procedure elaborates how to control drawings received from the vendor or
developed in-house. The system identifies how the drawings are to be processed and who has
the authority to approve these drawings / documents and transmittal of the drawings to the site
office concerned, project consultant and to the vendor.
9.2.1
System for Feed Back
This project has got a group of field engineers, which will perform the engineering tasks at site
office and support the engineering group concerned at the Head office. The engineering
group is the focal point for all engineering issues and the field problems pertaining to
engineering. They also receive drawings and documents and distribute amongst the various
departments of the project, provide any clarification or modification of any nature and give the
feed back during construction and commissioning stage of the project. They are also
responsible to generate project drawings and data to AS-Built information.
9.2.2
Computer Aided Design
The use of Computer Aided Design (CAD) for development of engineering design and
drawings is being emphasized by the company. Presently almost all the engineering tasks are
performed using CAD with the software programs already available and developed within the
company.
9.2.3
Assurance of Engineering Quality
With the use of standardized document, model technical specification, design guidelines and
checklist, the required engineering quality is possible to achieve.
Cost Control: In order to have control on the overall cost of the project, the project is split into
no. of packages and the cost is worked on the basis of the price data obtained from various
vendors, as well as on the basis of the trends of the cost variations in the present day market.
10 MW Biomass Based Power Plant
ABEIL
Time Control: This is achieved during project planning and monitoring system. Monitoring is
done at every place - Regional office, Consultant’s office and the Site office.
9.3
CONSTRUCTION MANAGEMENT
9.3.1
Power Plant and Facilities
Site activities of project group shall be carried out as per Consultants, Construction
Management Manual advice prescribing systems and procedures, their scope of
responsibilities, inter-relationships as outlined in the various chapters.
Organization tasks and framework for construction management has been organized in four
distinct headings namely:
a)
b)
c)
d)
Construction Management Tasks.
Construction Management Organization.
Functional Boundaries & Scope of Work.
Construction Management Interface.
The Construction Management Tasks cover the following: i)
ii)
ii)
iv)
v)
vi)
vii)
viii)
ix)
x)
xi)
9.4
Infrastructure development
Construction execution supervision
Safety and security
Planning, Scheduling, Reviewing and Control.
Field quality surveillance
Site contracting
Material Management
Cost control
Liaison with external agencies
Personnel administration and welfare
Finance and Account.
CONSTRUCTION MANAGEMENT ORGANISATION
Construction Organization at project site is headed by a project manager, a senior executive
from the plant assisted by a consultant engineer from the consultant side. The project
manager is assisted in carrying out site functions by functional heads viz.
Head of project construction, planning, scheduling and project co-ordination.
Head of Personnel Management, which includes finance and accounts.
10 MW Biomass Based Power Plant
ABEIL
The construction, erection and commissioning is carried out by the contractors with the
technical supervision from the Consultant / Customer Engineers in association with the
representatives of equipment manufacturer to the satisfaction of the plant engineers. The tools
and plants for construction are brought by the contractor.
The functional boundaries and scope of work cover the following areas: i)
ii)
iii)
iv)
v)
vi)
vii)
viii)
9.5
Construction planning and scheduling,
Civil construction
Equipment erection
Site contract group, which provides centralized services at site for awarding work
contracts.
Material management functions cover activities of material planning, procurement,
storage issue etc.
Site service is a centralized service group which provides and maintains all common
construction facilities, tools, plants and construction utility services.
Personnel and Administration group at site is guided by the HRD division at Head
quarters and it is responsible for man power planning, recruitment etc.
Finance & Accounts.
INFRASTRUCTURAL FACILITIES & CIVIL SYSTEM
The existing biomass power plant has well developed infrastructure facilities and civil for
structures like office building, power plant buildings and other storage yards etc. Separate
infrastructure facility is not required for this power plant.
9.6
QUALITY ASSURANCE & INSPECTION
The procedure for the Quality Assurance and Inspection is evolved by the consultant in coordination with the power plant engineers. In order to ensure high reliability and better
performance, quality assurance programs have been developed for all packages. For this
purpose, bid documents for all contract packages stipulate that the bidders have to submit
their own quality assurance programs for manufacturing and field activities.
They include identification of
a)
b)
c)
d)
e)
f)
Quality organization.
Documentation control.
Procedure for purchase of materials, parts, components and selection of
subcontractors, services including vendor analysis, source inspection, raw material
inspection etc.
Control and testing of calibration, testing of measuring and testing equipment.
Handling, storage and delivery.
Maintenance of records to meet all the contractual requirements.
10 MW Biomass Based Power Plant
ABEIL
All the contractors are required to develop such QA programs after the review of all technical
specification and contract requirements. The QA programs of the vendors are taken into
consideration during bid evaluation by the consultants. At the time of finalization of the
agreement with the successful vendors, a detailed quality plan setting and the quality practices
and procedures, relevant standards and acceptance level for all the components of all the
equipment will be mutually discussed and agreed to.
Further, consultant / client witnesses tests / inspection etc as per the customer hold points
(CHP) to be selected by the consultant in quality plans, beyond which the work will progress
only with the consent of the consultant. Apart from this, the quality surveillance of the system
and procedures of the contractor’s quality control organization will be carried out for monitoring
the implementation status.
In addition, the consultant / customer will carry out quality audits on the systems and
processes for the areas of manufacture and field activities to determine the effectiveness of
implementation and to ensure conformance to code, contract and procedure requirements.
Control of quality in the field right from the stage of material receipt till final commissioning will
be effected by the field quality control group. This group will be independent of actual
execution schedules and costs and will function under technical guidance from the
consultant’s QA group.
9.7
MAN POWER TRAINING & PLACEMENT
The existing power plant is having proper Organization structure. The existing biomass power
plant has well trained technicians and other labors. This new plant needs some more
technicians and labors for its operation and maintenance.
10 MW Biomass Based Power Plant
ABEIL
10 MW Biomass Based Power Plant
ABEIL
10 MW Biomass Based Power Plant
ABEIL
10. OPERATION AND MAINTENANCE
The proposed Organization structure for the operation and maintenance (O&M) of the power plant is
presented in the exhibit. In order to ensure a high level of performance of the power plant, it is
proposed to induct experienced O&M engineers from the very beginning of the project.
10.1
BASIC STRUCTURE OF THE O&M TEAM
The basic structure and the broad functional area within the O&M organization would be as
follows:
The Plant Manager would have the primary responsibility for the O&M of the power plant. The
organization will comprise of four broad functional areas viz. Operation, maintenance,
technical and administration. The basic duties covered under each of these functional areas
would be as follows:
10.1.1 Operation

Operation of main generating equipment, fuel handling systems, water systems including
water treatment plant, switch yard and other auxiliary plant.

Except for the Power Station Superintendent all other operating personnel would work on
three shift basis.

Shift personnel manpower planning for key areas has been generally done on 3+1
concept, to take into account leave taken by shift personnel.

The day to day operation of the power plant will be controlled by the Manager who will be
assisted by the Control room operators and shift engineers.
10.1.2 Maintenance


Maintenance of mechanical and electrical plant, control systems, buildings, roads,
drainages and sewage systems etc.,
Operation of the plant workshop, planning and scheduling maintenance works and
deciding the requirement of spare parts.

The Plant Manager will be assisted by departmental engineers, who take care of the
maintenance aspects of all mechanical, electrical and I&C requirements.

Trained technicians will be employed to assist the maintenance group in day to day
maintenance of the plant
10 MW Biomass Based Power Plant
ABEIL
10.1.3 Administration
The main responsibilities of this department will be as follows:









10.2
Purchase
Plant Security
Liaison with local labor officers
Stores management
Finance & Accounts
Medical Services
Secretarial & Clerical
Transport services
HRD and Training
FACILITIES TO BE EXTENDED TO THE EMPLOYEES
The number of employees required for the proposed power plant will be around 40. The
personnel required for administration and finance & accounts also will be provided. The
following facilities will be provided in the power plant:







10.3
Administration building and technical office
Construction offices and stores
Time and security offices
First aid and fire fighting station
Canteen and welfare center
Toilets and change rooms
Car parks and cycle/scooter stands.
STATION OPERATION PHILOSOPHY
The power generated from this plant is exported to ASEB Grid. Necessary software and
hardware features are required for effective operation and maintenance management system.
Software system manages and provides the information needed to manage daily operations,
improve labor productivity, reduce maintenance costs, and monitor preventive and predictive
maintenance programs.
Through more effective scheduled and preventive maintenance, the costs associated with
emergency breakdowns can be greatly reduced. This includes savings from reduced payroll
overtime, fewer defective products and reduced down time losses from disrupted production
schedules.
10 MW Biomass Based Power Plant
10.4
ABEIL
STATION MAINTENANCE PHILOSOPHY
The based power plant maintenance philosophy is based on the following aspects:
10.4.1 Ordinary Maintenance
Ordinary Maintenance, which covers routine checking and minor and refurbishment activities
to be performed according to operating manuals on component / equipment in operating
conditions.
10.4.2 Emergency Maintenance
Emergency Maintenance, which is a corrective maintenance to be performed when a
significant failure occurs. To minimize forced outages duration, an effective Emergency
Maintenance must be supported by:
A proper stock of spare parts.
Permanent monitoring and diagnostic systems for main components.
10.4.3 Maintenance Plan and Scheduled maintenance
Scheduled maintenance is carried out according to maintenance plan, which should be
discussed and optimized according to the needs of the customer/client.
The maintenance plan is based on scheduled outages for the following components:




10.5
Boiler
Steam Turbine
Alternator
Switchyard equipment
MAINTENANCE MANAGEMENT SYSTEM
The maintenance of this plant will be carried out as per the above philosophy. This system
aims at maximizing the availability of the plant, while ensuring minimum maintenance cost and
safety of the plant and personnel.
Meetings are convened by various departmental Heads to accelerate the decision making
process and to lay down the priorities and guidelines for maintenance work to be taken up.
10 MW Biomass Based Power Plant
10.6
ABEIL
SPARE PARTS MANAGEMENT SYSTEM
The primary objective of spare part management system will be to ensure timely availability of
proper spare parts for efficient maintenance of the plant without excessive build-up of nonmoving and slow moving inventory.
The spare parts management system for this project will cover the following areas:





10.7
Proper codification of all spares and consumables.
Spare parts indenting and procurement policy.
Ordering of critical mandatory and recommended spares.
Judicious fixation of inventory levels and ordering levels for spare parts based on
experience.
Development of more than one source of manufacturer/ supplier Whenever practicable.
AVAILABILITY OF O & M MANUALS
All contracts include provision of at least 6 sets of detailed O & M manuals, which will be
distributed to all departments concerned well in advance from the commissioning date of the
power plant to avoid problems in preparation of commissioning documents as well as proper
installation and commissioning procedures of various equipment.
10.8
SPECIAL TOOLS AND TACKLES
All contracts will include the provision for supply of one set of all types of special tools and
tackles, which are required for installation, commissioning and proper maintenance of plant
and equipment.
10.9
OPERATION REQUIREMENTS
With the completion of the official hydraulic test of the boiler, the pre-commissioning and
commissioning activities start. Pre-commissioning checks of the individual equipment will lead
to safe commissioning of the equipment. Installation procedure and commissioning procedure
as stipulated in the O & M manuals supplied by the various equipment suppliers shall be
carefully followed. Wherever possible, it is advisable to keep the vendor’s representative at
site for commissioning the auxiliary equipment of the power plant.
However, the boiler, turbo-alternator and other critical equipment have to be commissioned by
the supplier itself, as the performance guaranties lie with them.
10 MW Biomass Based Power Plant
ABEIL
Controls and Instrumentation system along with alarm and trip interlocks should be put into
operation to safeguard the equipment as well as the operating personnel.
10.10 CHECKLISTS AND PROTOCOL
A detailed checklist for the various equipment, supplemented with the checklist submitted by
the supplier shall be drawn and logged for future reference. This will also form part of the
plant’s base history / datum.
Whenever an equipment in commissioned, the important parameters of that particular
equipment should be observed for a period of eight hours and the readings shall be logged as
per the log sheets. These activities shall be performed in the presence of the customer /
consultant and a protocol shall be signed.
10.11 ORGANISATION LEVELS & GRADING OF POSITIONS
Every position in an organization is graded within these decision-taking bands based on a
short description mentioned below. These grading levels range from A Band (unskilled labor)
to E- Band (Top Management). The definitions for the classification of different positions are
as follows:
A-Band
Basic elementary decisions where the options and alternatives are limited.
Information required by the worker is limited, simple, and easy to understand.
It mainly requires unskilled labor and training requirements are minimum.
B Band
Operational decisions in a logical sequence of elements Experience and
practice is essential for taking decisions in this band. Training normally takes
a few months.
C Band
Process decisions in a systematic sequence of operational activities.
Problems have to be diagnosed and the best solution form a range of
alternatives needs too be selected and implemented. A broad spectrum of
intensive formal education, as well as experience, is required for these jobs.
D Band
Interpretative decisions by middle Management.
E Band
Strategic decisions by Senior Management.
10 MW Biomass Based Power Plant
ABEIL
. STATUTORY CLEARANCES REQUIRED
The following are the statutory clearances required for the proposed power plant of ABEIL at Jagi
Road in Mayong Circle of Marigaon district in Assam. Details of Approvals are given in the notification,
which is enclosed.
11.1
Approval from AEDA
ABEIL shall file an application with AEDA for sanction of project as per the Government of
Assam notification of power projects. ABEIL, will also need to enter an agreement with AEDA
as facilitator.
11.2
Tariff Fixation from AERC
ABEIL Ltd,should file an affidavit with AERC for obtaining the tariff.
11.3
Power Purchase Agreement with ASEB
After obtaining the approval from AEDA, and ASEB, ABEIL,need to enter Power Purchase
agreement with ASEB.
11.4
Approval for Parallel Operation
Approval of the Government of Assam through ASEB for parallel operation of generating set
with ASEBGrid, shall be sought. Scheme has to be approved by ASEB Inspectorate.
11.5
Pollution Control Board
Initially consent to establish to be obtained from the Assam State Pollution Control Board for
the air pollution, water pollution and noise pollution. The source of pollution and the control
methods proposed are discussed in the chapter, “Environmental Impact and Pollution Control”.
On commissioning, consent to operate need to be obtained from Pollution Control Board.
11.6
The Land Use Clarification Clearance From Govt. of Assam
Approval for the layout and buildings of the power plant is required from the Town Planning
Department of Govt. of Assam.
10 MW Biomass Based Power Plant
11.7
ABEIL
Approval for the Electrical Installation
The electrical installations like transformers, switch yard equipment etc., shall be approved by
the Chief Electrical Inspector, for the safety features, location etc.
11.8
Boiler and Pressure Part Components
The approval from the Chief Inspector of Boilers, Assam is required for the installation and
operation of the boilers, steam and water piping.
11.9
Ground Water Board
The make up water for the power plant is proposed to be pumped from the nearby take and
borewell available in the site. Clearance from the Central Ground Water Board is required for
using the ground water.
11. 11 Irrigation Department
It is better to have the permission from Irrigation department for drawal of water from the
canals.
11.12 Information to MNES
Ministry of Non Conventional Energy Sources, (MNES) extends the capital subsidy. Promoter
need to apply to MNES through AEDA, after obtaining the loan sanctioned from Financial
Institution. MNES needs the following documents enclosed to their application and check list:
a.
b.
c.
d.
e.
f.
Detailed Project Report
Project Approval from AEDA
Power Purchase Agreement with ASEB
Consent to Establish from Assam State Pollution Control Board.
Sanction Letter from Financial Institution
Appraisal Report from Financial Institution
MNES gives the principal approval initially, and sanctions the Capital subsidy after
commissioning. MNES is yet to issue administrative approval.
11.13 Duty Exemption:
Govt of India had issued the notification, exempting the Excise Duty and Custom Duty for
setting up these plants. Govt of India Notification is already given in Chapter 1. Promoter
should take advantage of this. Suppliers of the equipment are need to be taken, Duty
Exemption Certificates from MNES.
10 MW Biomass Based Power Plant
ABEIL
12. COST ESTIMATES
12.1
GENERAL
ABEIL is planning to install 11 MW Biomass based Power Plant at Jagi Road, Mayong Circle,
Marigaon District. As this plant is situated in Assam, transportation charges, erection and
commissioning charges are more compared to the other parts of India. Even Govt. of Inia
gives the special incentives for the North Eastern States.
This chapter deals with the estimates of the total cost of the power project. The estimate is
also based on the budgetary offers received from the various manufacturers for the major
equipment and in house cost data compiled for power plants. Contingency provision has been
made, but not the escalation, as the project is expected to be implemented within short period.
Ministry of Finance, Govt of India, had issued the notification No: 33/2005 – Central Excise
dated 8th Sept 2005, exempting the custom duty and excise duty for the plat and machinery
required for biomass based power plants. Hence, the project cost is exclusive of these duties.
This chapter deals with the estimates of the total cost of the power project. The estimate is
also based on the budgetary offers received from the various manufacturers for the major
equipment and in house cost data compiled for power plants. Contingency provision has been
made, but not the escalation, as the project is expected to be implemented within short period.
The cost of the power plant given in this chapter, covers all the costs associated with the
construction of the plant, and includes the civil construction cost, cost of equipment for power
generation, cost of auxiliaries and utilities. The total cost is arrived at by adding to this cost,
the pre operative expenses inclusive of project design and engineering, start up and training
expenses, interest during construction and the margin money for working capital.
Table 12.1 to 12.4 gives the details of the project works cost estimate including Civil,
Mechanical and Electrical cost. Table 12.5 to 12.9 gives the details of the estimate of the
project cost which includes the contingency, preoperative expenses including the IDC and
working capital margin. The table also gives the drawl of the term loan during the project
construction period and the calculation of the IDC is based on that. It is presumed that the
10 MW Biomass Based Power Plant
ABEIL
term loan disbursement is proportional to the amount of the equity invested. Table 12.10 gives
the consolidated details of the total cost of the project.
12.2
LAND AND SITE DEVELOPMENT
This company is planning to procure the land with the help from Revenue Officials of Morigaon
District. The proposed site is just behind 132 kV Substation of Jagi Road , Mayong Circle. .
Table 12.1 – Land and site Development
(Rs. Lakhs)
Particulars
Amount
Cost of Land to be acquired
45.0
Cost of leveling and development
10.0
Cost of laying of roads
Internal roads for the Factory
5.0
Approach road connecting the Main Road
5.0
Internal roads for the Township
5.0
Cost of fencing/compound wall
Cost of Gates
Total
12.3
15.0
2.0
87.0
CIVIL AND STRUCTURALS
The civil work includes the earthwork and concrete work for the power house building,
equipment foundations, tanks, cooling tower basin etc. The cost of laying of in plant roads,
fencing drains and sewers is also included as part of civil cost. The RCC/structural steel work
for the turbogenerator building is also included under the heading of Civil Works cost. No piling
has been envisaged for the building as well as for equipment foundations and only open
foundations are considered.
The civil work quantities and the cost of civil are only estimates and will have to be suitably
modified and firmed up after the equipment supply is finalized and adequate data regarding
the loading dimensions of equipment are available from the manufacturers and suppliers
during the engineering stage, and also on the actual soil conditions encountered at different
stages of construction. The estimates given here are based on the soil bearing capacity of 35
Tones/Sq. mtr at 3.5 meter depth.
10 MW Biomass Based Power Plant
ABEIL
The total cost of civil works including equipment foundations, buildings, cost of land
development, roads, and miscellaneous foundations etc is estimated at Rs. 317.78 Lakhs.
Table 12.2 Civil Works Cost Estimate
Sl.
No.
Description
Unit
Quantity
Rate
Rs.
Cost
(Rs. Lakhs)
7.0
Power plant building
7.1
Excavation
m³
2015
120
2.42
7.2
Backfilling with approved earth
m³
1495
108
1.61
7.3
PCC
m³
195
4560
8.89
7.4
RCC grade M20 including formwork
m³
371
6000
22.23
7.5
Reinforcement Steel
T
36
48000
17.47
7.6
Brick work
m³
520
2400
12.48
7.7
Windows, doors etc.
m²
260
2160
5.62
7.8
Plastering
m²
13351
108
14.42
7.9
Flooring
m²
1729
600
10.37
7.10 Painting
m²
8671
84
7.28
7.11 Structural Steel
T
87
43200
37.63
7.12 Grating
m²
104
1800
1.87
7.13 Plumbing
LS
1.50
7.14 Precast RCC Roof Slabs, 125 mm thick
LS
1.50
7.15 Weathering Course
LS
1.50
7.16 False ceiling
LS
1.00
8.0
Foundation for boilers, turbogenerator,
transformers & other equipment
0
8.1
Excavation
m³
2925
120
3.51
8.2
Backfilling with approved earth
m³
2470
108
2.67
8.3
PCC
m³
135
4560
6.17
8.4
RCC grade M25 including formwork
m³
527
6000
31.59
8.5
Reinforcement Steel
T
60
48000
28.70
8.6
Micellaneous (Embedments, Foundations etc.)
LS
9.0
Cooling tower basin, raw water tank, pumps
and miscellaneous foundations
0
9.1
Excavation
m³
1300
120
1.56
9.2
Backfilling with approved earth
m³
1040
108
1.12
2.20
10 MW Biomass Based Power Plant
ABEIL
9.3
PCC
m³
91
4560
4.15
9.4
RCC grade M20 including formwork
m³
455
6000
27.30
9.5
Reinforcement
T
35
48000
16.85
10.1 Excavation
m³
1950
120
2.34
10.2 Backfilling with approved earth
m³
1560
108
1.68
10.3 PCC
m³
137
4560
6.22
10.4 RCC grade M20 including formwork
m³
644
6000
38.61
10.5 Reinforcement
T
59
48000
28.08
10.6 Embedments, flanges, ladders & platforms
T
20
50400
9.83
10.7 Refractory lining millboard etc.
LS
6.00
12.0 Temporary stores, office building, garage, etc.
LS
4.20
Misc. civil works for conveyor supports, ducitng
13.0 supports, fuel handling system etc.
LS
16.80
Factory buildings for auxiliary services like water
14.0 supply, laboratary, workshop
LS
14.00
15.0 Administrative buildings & guest house
LS
25.20
Misc. non-factory buildings like canteen, time
16.0 office, change room
LS
11.20
17.0 Garage / Parking
LS
2.80
18.0 Architect fees
LS
35.00
10.0 RCC Chimney and foundation
11.0 Switch Yard Civil Foundation
TOTAL
12.4
475.58
MECHANICAL AND ELECTRICAL WORKS
The project cost estimate includes the cost of all other auxiliary systems of the power plant,
like the cooling water system consisting of cooling tower, and the pumps, DM water system,
compressed air system. AC and ventilation system, fire fighting etc. Steam piping, high
pressure and low pressure, feed water piping, cooling water piping and all other piping of the
power plant.
The 132 kV transmission lines for evacuating power are also considered in the electrical
estimates. The cost of the generator transformer for stepping up the generated voltage to the
exportable voltage level, the distribution transformers for meeting the power requirement at
415 level for power plant, the power control center for feeding power to the plant, the cables
10 MW Biomass Based Power Plant
ABEIL
and bus ducts, complete earthling of the plant and lighting are included in the works cost
estimate.
Cost towards the plant erection, testing and commissioning have been included in the
equipment cost indicated. Also the cost estimates given in the report are inclusive of the taxes
and duties, freight and insurance.
The cost of the two years spares is estimated to be two percent of the mechanical and
electrical equipment cost which is included in the cost of the equipment included in the works
cost estimate.
The total cost of the mechanical and electrical works is expected to be around
Rs. 3236 Lakhs
Table 12.3 Machinery Cost including Electricals
Equipment/ Machinery
Steam Turbine & generator
(11 MW bleed cum condensing)
(Rs. in Lakhs)
Amount
1050.00
Boiler & BOP
Boiler
1200.0
DM plant
30.0
Cooling water system and piping
60.0
Fuel handling system
140.0
Ash handling system
45.0
EOT Crane
25.0
Substation
210
Plant electricals
50.0
Cooling tower
60.0
Fire protection
25.0
Air conditioning & Ventilation
40.0
Utilities like water & comp.air
50.0
Erection
80.0
Transmission lines system
Miscellaneous like weigh bridge, chippers etc.,
Total
121.0
50.0
3236.00
10 MW Biomass Based Power Plant
ABEIL
Table 12.4 Electrical Cost Estimation
Sl. No
Description
Amount in Lacs
1
11 KV Panel
1
37.00
2
NGR and Surge arrestor
1
5.00
3
33 KV SF6 Breaker
1
8.00
4.
33 KV control & Relay Panel
1
8.00
5
33 KV Isolator
2
4.50
6.
CT
1
1.00
7.
PT
1
1.00
8.
Power Transformer – 12.5 MVA
1
80.00
9.
Auxiliary Transformer – 1.25 MVA
1
20.00
10.
MCC Panel
1
7.50
11.
110 Volts Battery set
1
2.50
12
110 Volts Battery Charger
2
10.00
13
DCDB
1
1.00
14
UPS
1
1.00
15
Cables
1
10.00
16
Lighting materials
1
2.00
17
Earthing
1
2.00
18
Steel Structure in tonnes
5
3.50
19
Erection Charges
-
6.00
Total
12.5
Quantity
210.00
CONTINGENCIES
A provision of about 5% of the costs of the civil and structural work, mechanical and electrical
equipment and other costs has been provided towards the contingencies, during the
construction of project. This contingency provision works out to Rs. 220.92 Lakhs.
10 MW Biomass Based Power Plant
ABEIL
Table 12.5 Contingencies
Particulars
Cost
Site development
Contingency
Provision
87.00
5%
4.35
475.58
5%
23.78
Plant & Machinery
3236.00
5%
161.80
Misc. Fixed assets
92.00
10%
9.20
435.75
5%
21.79
Buildings
Pre-Operative Expenses
Total
12.6
(Rs. in Lakhs)
Amount
220.92
NODAL AGENCY’S REQUIREMENT
AEDA is the nodal agency to give approval to this project. They will also act as coordinators
for this project. As the policy is not yet announced, provision for nodal agency fee is taken as
Rs. 2.00 lakhs.
12.7
MISCELLANEOUS FIXED ASSETS
The cost of Miscellaneous fixed assets is estimated at Rs.92 Lakhs based on the budgetary
estimate received from the suppliers. The details are as under:
Table 12.6 Miscellaneous Fixed Assets
Particulars
The laboratory equipment
30.00
Workshop equipment
30.00
Vehicles
20.00
Furniture
5.00
Office equipment
7.00
Total
12.9
Amount Rs in Lakhs
92.00
WORKING CAPITAL MARGIN
The working capital shall meet the requirements of raw material costs and the receivables.
70% will be bank finance and the 30% will be the margin money to be capitalized. The
financial analysis takes into consideration an interest rate of 12.25% for working capital
financed by bank. Working capital requirement in first year is Rs. 424.09 Lakhs. The total
10 MW Biomass Based Power Plant
ABEIL
requirement of margin money for working capital is estimated at Rs. 106.02 Lakhs on the
basis of raw material for 180 days and the debtors for 60 days in first year. On the above
basis, the total working capital loan requirement for the first operation year is estimated at Rs
318.07 Lakhs. In third year working capital requirement increases to Rs.576.50 lakhs and the
requirement of working capital margin money increases to Rs. 148.49 Lakhs.
Table 12.7 Working Capital
Particulars / Years
(Rs. in Lakhs)
4th year 5th year
1st year
2nd year
3rd year
125.53
147.77
171.23
176.36
181.65
7.50
7.88
8.27
8.68
9.12
Sundry Debtors 2 months
291.06
242.62
397.01
408.92
421.19
Total Current Assets
424.09
498.26
576.50
593.96
611.96
Less: Margin Money (25%)
106.02
124.57
144.13
148.49
152.99
Bank Finance Required
318.07
373.70
432.38
445.47
458.97
Current Assets Holding level in months
Raw-Material 6 months
Stores 6 months
12.9
INTEREST DURING CONSTRUCTION (IDC)
The interest during construction period is capitalized to calculate the project cost. The IDC is
calculated considering the phasing of the capital expenditure given below.
12.9.1 Phasing of Capital Expenditure
The project construction period is 18 months from the date of ordering the main equipment.
The following gives the phasing of the capital expenditure on quarterly basis from the date of
ordering of the boiler and the turbo generator, which contributes the major expenditure.
Interest on loan for the construction period is taken as 12.25%. Interest during construction is
rounded off to Rs.412.00 Lakhs.
Table 12.8 Phasing of Capital Expenditure & IDC
Quarter
(Rs. in Lakhs)
Term Loan Interest till the date
of Completion
Capital
Expenditure
Equity
1
1421.48
355.37
1066.11
171.90
2
947.65
236.91
710.73
96.61
10 MW Biomass Based Power Plant
Quarter
ABEIL
Capital
Expenditure
Equity
Term Loan Interest till the date
of Completion
3
710.74
177.68
533.06
63.97
4
710.74
177.68
533.06
47.97
5
473.82
118.45
355.37
21.32
6
473.82
118.45
355.37
10.66
Total
4738.27
1184.57
3553.80
412.43
It is assumed that, equity will be 30% of the project cost, i.e. Rs1421lakhs
While calculating the IDC, it is considered that the drawl of long term loan from Financial
Institution will commence simultaneously with the bringing in the equity.
12.10 PRE OPERATIVE EXPENSES
Pre-Operative Expenses are estimated on the basis of expenditure incurred during the
implementation of the project. This is inclusive of the amount to be paid to AEDA, front end
fee, and the fees to be paid to obtain the statutory approvals including the registration of
company. Detailed engineering and consultancy charges are not included in the preliminary
expenses. Implementation period is around 18 months. The details of pre operative expenses
are as under:
Table 12.9 Pre Operative Expenses
Particulars
Nodal Agency's Fee
Travelling
(Rs. in Lakhs)
Amount
2.00
10.00
Ireda Application Fee
0.00
Front end Fee
0.00
Company Incorporation Charges
8.00
Deposits
0.00
Trial run Expenses
3.75
Interest during the construction period
412.00
Total Pre-Operative Expenses
435.75
IREDA does not take the registration fee, and front end fee for the projects implemented in North
Eastern states. Hence this amount is not considered.
10 MW Biomass Based Power Plant
12.11
ABEIL
Detailed Engineering Fee
A provision of Rs. 70.00 Lakhs has been made towards the fees for detailed Engineering.
12.12 TOTAL PROJECT COST
Project Cost
: Rs. 4738.27 Lakhs
It is assumed that 30% of the above total project cost, i.e. Rs.1421Lakhs will be met from
equity. The loan component of the project cost works out to Rs. 3317Lakhs.
Table 12.10 Summary of Project Cost Estimate
Particulars
Land & Site Development
Buildings
Plant & Machinery
(Rs. in Lakhs)
Amount
87.00
475.58
3236.00
Mice. Assets
92.00
Detailed Engineering
70.00
Contingencies
Preliminary Expenses
.22092
15.00
Pre-Operative Expenses(incl.IDC)
435.75
Margin Money for Working Capital
106.02
Total
4738.27
10 MW Biomass Based Power Plant
ABEIL
13. FINANCIAL ANALYSIS
13.1
GENERAL
Financial Analysis carried out with the assumption of finance from IREDA. IREDA gives the
special interest rate reduction of 1% from the regular states biomass based power plant
interest rate and they don’t charge registration fee and Front end fee.. Assumptions for
financial analysis is given below:
A.
B.
C.
D.
E.
F.
Debt equity ratio is 70:30
Interest rate 12.25%
Repayment period of 9 years including 2 years moratorium
Project completion period – 18 months
Repayment of loan in 28 quarterly installments
Biomass(rice husk) Price: Rs. 1500.00 per tonne in first year and increases by 5% per
annum
13.1.1 This section of the report gives the financial analysis of the power project using rice husk as
fuel and the proposed tariff calculations(based on the ‘Cost Estimates’under section 12) for
sale of power to the grid.
13.2
MODE OF FINANCING
13.2.1 The total project cost with the interest during construction and working capital margin is
estimated to be Rs. 4738 Lakhs as given in ‘Cost Estimate’. Since the project fulfills the
norms of renewable energy biomass based projects, it is expected that the project will get the
eligibility of 70% of the project cost as long term loan.
13.2.2 Thirty percent (30%) of the total project cost i.e. Rs. 1421 Lakhs will be brought in as the
equity for the project by the Management of the power plant. The balance of Rs. 3317 Lakhs
will be mobilized as long term loan from financial Institutions.
13.2.3 It is assumed that this loan amount will be repaid in Seven (7) years in 28 equal installments
and there will be an initial moratorium of two (2) years on the loan repayment. An interest rate
of 12 % is considered on the term loan, and it is assumed that the interest payment and the
loan repayment will be quarterly.
13.2.4 This Power Plant will be located at Jagi Road, Morigaon District.
10 MW Biomass Based Power Plant
ABEIL
13.2.5 The project envisages no foreign exchange out flow, since all the equipment are assumed to
be bought from indigenous suppliers and foreign exchange if any will be organized by the
suppliers of the equipment.
13.3
PLANT OPERATION
ABEIL is planning to operate the plant for nearly 330 days. Installed capacity is 11 MW. The in
house consumption for power plant will be around 1 MW. It is estimated that, this plant will be
in a position to export around 10 MW to the grid. The plant load factor is taken as 90%
13.4
Raw Material Requirement and cost:
On an average biomass requirement is around 1.25 tonnes per generation of 1 MWh. Plant
will be operating for nearly 330 days, i.e. 7884 hours, including annual maintenance.. The
capacity utilization assumed is 90% from the first year itself. This assumption is mainly for
financial analysis. The price of rice husk is taken as Rs.1500 per ton as per current rate with
an escalation of 5% per annum.
13.5
SALABLE ELECTRICITY
13.5.1 The Gross generation of power in the new power plant will be 11000 kW. Out of this, around
10% of power will be consumed in the power plant, i.e.1000 kW. The balance power of 10000
kW can be supplied to the grid.
This exportable power with a plant capacity utilization of 90% will be supplied to the ASEB
grid. This will work out to (7884x10000)kwhr i.e.78.84 million units per annum.
13.5.2 The power generated is proposed to be sold to the ASEB at present, as ASEB is directed by
Govt. of Assam.
13.5.3 UNIT CAP PRICE OF ELECTRICITY
The Ministry of Non-Conventional Energy Sources, have recommended a price of Rs. 2.25 per
kWh, for the base year 94-95. They have also recommended an escalation of 5% on the Unit
price every year. While, many SEBs have not yet fully implemented these recommendations,
Govt. of Rajasthan had issued the notification indicating the base price of Rs.3.52 for the year
2004-05.
Since ASEB is having a deficit of 221 MU after the contractual purchases in 2006-07, it has to make up
the deficit by purchasing power from Power Traders at a high rate of Rs.3.57(avg) as indicated under
10 MW Biomass Based Power Plant
ABEIL
clause 2.7 earlier.We are assuming that, Assam State Electricity Regulatory Commission will give the
cap rate of sale of biomass based power of at least Rs.3.50 per unit upto a limit of 200 million units in
the year 2007-08 to make up the deficit of power.
13.6
OPERATION AND MAINTENANCE COST
The repairs and maintenance cost for this project has been assumed as Rs.61.56 Lakhs in
first year with escalation of 5% per annum. The salaries and wages of the operation and
maintenance personnel of the power generation plant is separately considered (Refer table
enclosed to the section on Manpower and Training) and the same have been worked out as
Rs.68.36 Lakhs, including a provision for contract labor service charges.
Table 13.1 Price escalations
Expenses
Amount
Escalation per year
Repairs and Maintenance
61.56
5%
Salaries and Wages
68.36
5%
Consumables
15.00
5%
13.7
ADMINISTRATION, OVERHEADS AND SELLING EXPENSES
The Cost included under this head is Rs. 75.28 Lakhs including Rs. 25.00 Lakhs for insurance.
This also includes the general administrative expenses.
Table 13.2 Administration, Overheads and Selling Expenses
Expenses
Amount
Escalation per year
Managerial and Administrative salaries
45.28
10%
Selling and Other Expenses
5.00
0%
Insurance
25.00
0%
Both Operation & Maintenance and Administration Overheads/Insurance are considered under
O&M Expenses in the calculations for generation cost.
13.9
TAXES ON GENERATION AND SALES
No expense under this head is considered since this is not applicable.
13.10 ESCALATION PROVISION FOR VARIOUS COSTS AND EXPENSES
10 MW Biomass Based Power Plant
ABEIL
An escalation of 5% on the salaries and wages, 5% on the administrative expenses and 5%
on the cost of utilities is considered in the financial analysis. An escalation of 5% is considered
on the cost of fuel in the financial analysis.
13.11 DEPRECIATION
A straight line depreciation rate of 3.6% for the plant and machinery as provided in the Gazette
for a life span of 25 years is considered in the financial analysis. The depreciation based on
the above rates works out to Rs.170.57 Lakhs for a full year.
13.12 CAPITAL SPARES
1% of gross fixed assets amounting to Rs.Rs.47.38 lacs is taken as capital spares
per annum.
13.12 GENERATION COST and PROPOSED TARIFF
The annexed schedule gives the estimate of cost of production of electricity, for ten (10) years
operation from plant commissioning and the proposed tariff for sale of power to the grid after
considering a 14% ROI. Plant capacity utilization of 90% has been considered from first year
onwards in the analysis..