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INTRODUCTION
Solar Rooftop, which is often called a rooftop Photo-Voltaic power station or PV system, is a photo-voltaic
system that has its electric generating solar rooftop panels mounted on the rooftop of residential &
commercial buildings or structure.
Solar rooftop systems on residential buildings typically features a capacity of about 5-20 KW, and in cases of
those solar rooftop panels mounted on commercials buildings may reach up to 100 KW or more.
Rooftop Solar Power Plants may be of the following types:
1. On-Grid Rooftop System
2. Off-Grid Rooftop System
3. Hybrid Solar Rooftop System
4. Net Metering
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ON GRID SOLAR ROOF TOP SYSTEM
The on-grid solar rooftop system is integrated with the main grid supply. The most straight forward kind of solar
rooftop only integrates with grid power and has no other backup power sources. This is known as on-grid solar
rooftop system and is always in sync with the grid.
The on-grid solar rooftop is recommended for those organisation which have a guaranteed supply of on-grid power.
Because If you suffer from frequent power interruption as such, a plant won’t work If the grid doesn't work.
This solar rooftop system allows power to be used from the grid supply only when the solar rooftop system is
unable to supply the required power. Thus eventually, the solar rooftop saves the expenses of non-stop grid power.
And this solar rooftop system can earn revenues as any excess electricity generated gas accumulated in the grid for
future purposes.
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SCHEMATIC REPRESENTATION
1
SOLAR PANELS TURN PHOTONS FROM
THE SUN INTO DC ELECTRICITY
ON GRID SOLAR
ROOFTOP SYSTEM
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3
2
THE AC POWER YOU DON’T USE IS SENT BACK
INTO GRID AND USED BY THE UTILITY
COMPANY
THE INVERTER TURNS DC CURRENT INTO AN
ALTERNATING CURRENT (AC) FOR USE IN YOUR
HOME
AN ISO 9001:2015 & CMMi Level 3 Company
OFF GRID SOLAR ROOF TOP SYSTEM
The Off-Grid Solar Rooftop system is not integrated with any grid power, instead, the
solar rooftop system only integrates with batteries or diesel generators. The electricity
generates form the solar rooftop panels charges the battery, which can be used to
power applications later. This kind of solar rooftop system is recommended in such
locations that are not connected to the grid at all. This type of solar rooftop is perfect
for small loads.
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SCHEMATIC REPRESENTATION
SOLAR
PANELS
OFF GRID SOLAR
ROOFTOP SYSTEM
MOUNTING
SYSTEM
SOLAR
CONTROLLER
BATTERY
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HYBRID SOLAR ROOFTOP SYSTEM
Hybrid Solar Rooftop System can be integrated with both grid power, batteries, and
diesel generators. The advantage is if the battery gets charged by the electricity that
generates from the solar rooftop system, the excess power accumulates in the grid as
revenues. Hybrid solar rooftop systems are recommended for those energy consumers
who have grid power but with frequent interruptions and who need critical loads to be
powered continuously. Most industrial and commercial consumers in India fall under
this hybrid solar rooftop system.
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SCHEMATIC REPRESENTATION
SOLAR PANNEL
ARRAY
METER
ELECTRIC
GRID
HYBRID SOLAR
ROOFTOP SYSTEM
CHARGE
CONTROLLER
DC/AC
INVERTER
HOME
BTTERY BACKUP
BANK
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NET METERING ROOFTOP SYSTEM
Net Metering Root-top system also commonly known as the billing system, credits the
owner of the roof top system’s for feeding the excess energy to the grid. For Eg., if a
house has a solar rooftop system or PV system that has the ability to generate more
electricity than the home uses during daylight hours. If the house is net metered, then
the electricity meter would run backward to provide the house owner with credits.
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SCHEMATIC REPRESENTATION
NET METERING
SOLAR ROOFTOP
SYSTEM
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BENEFITS OF ROOFTOP SOLAR
1. The increase of Carbon Dioxide and Carbon Mono Oxide is causing an alarming situation in the world called “Global Warming.” These solar rooftop systems don’t produce
greenhouse gases such as CO2 and CO. From recent research studies, and we got to know that this solar energy can eliminate the carbon emissions by 258 million metric
tons if they are extensively used over the next twenty years.
2. Solar rooftop panels don’t just power the AC on exhausting hot summer days, but also they take over some of the AC’s functions themselves. In the research work of the
University of California at San Diego, which says solar rooftop panels not only produce emissions-free electricity but also cool down the roof and the building they are
attached to. It lowers cooling costs and also offers an extra advantage of being solar.
3. Solar rooftop system installation offers cost savings. Because the tariff rate of solar rooftop panels is 17% and 27% cheaper than commercial and traditional tariff rates. Solar
rooftop installation also reduces electricity bills because rooftop solar panels supply electricity to the building, so they need to buy less electricity from the grid, and the netmetering allows you to sell your excess power to the utility company for even lower energy bills.
4. Though the deficiency of electricity is decreasing in India day by day, several rural and urban areas have such interrupted and unreliable connection of grid electricity. So
they are forced to use diesel generator, which causes adverse effects on health and air pollution. So, rooftop solar panels are the perfect and affordable choice in this
scenario. Since solar rooftop panels use the sun as their source of energy, so they are eco-friendly, and their cost of operation is also stable.
5. One of the most significant advantages of installing the solar rooftop system is, it doesn’t require additional area or space for installation. So one can efficiently utilize the
space of their rooftops. Furthermore, the solar rooftop panels offer protection to the roof of the building on which they are installed.
6. Solar rooftop panels utilize sunlight to generate electricity, and India is an ideal geographical place and receives ample of tropical sunlight. There are almost 300 sunny days
with clear skies each year in India. So we can say that India is an ideal place to install a solar rooftop system.
7. One of the main factors that highlight the importance of solar rooftop panels is that they require minimal maintenance. They come up with a service life of 25 years, and all
they need is to clean those solar rooftop panels once every 15-20 days with a cloth
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FOR FURTHER DETAILS CONNECT TO
M/s Mega Calibre Enterprises Pvt Ltd
Regd. Office & H.O.
D-139, Okhla industrial Area,
Phase-I, New Delhi-110020
Kolkata Office:
06/315 Action Area-1, New Town Rajarhat, Kolkata700160
Mumbai Office:
43, 44 Mistry Estate, MIDC Cross Road-‘A’ Near
Tunga International, MIDC, Andheri (E)
Mumbai-400093
Patna Office:
Flat no 6A, Silpa Enclave, Block A Ramnagri more,
Ashiana Nagar Patna-800025
Debolina Choudhury
AVP-Business Development
M: 98312 09509
debolina@megacalibre.com
Anindya Mukherjee
Group Leader- Business Development
M: 9836521057
anindya@megacalibre.com
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AN ISO 9001:2015 & CMMi Level 3 Company