AVAILABILITY BASED TARIFF (ABT)
AND
OPEN ACCESS - REGULATIONS
T SRINIVAS
SRLDC
1
INTRODUCTION
ABT
OPEN ACCESS CASE STUDIES
OPEN ACCESS REGULATIONS
OA DETAILS & RATES
2
REGIONAL GRIDS
QUICK FACTS
3
REGIONAL
GRIDS
NORTHERN
REGION
INSTALLED CAPACITY
NORTHERN :-
34,207 MW
EASTERN :-
16,478 MW
SOUTHERN :-
36,921 MW
WESTERN :-
37,100 MW
NORTH-EASTERN :NORTHEASTERN
REGION
TOTAL
2,404 MW
127,110 MW
EASTERN
REGION
WESTERN
REGION
SOUTHERN
REGION
4
THE NATIONAL GRID : PHASE 1
500 MW SASARAM
500 MW VINDHYACHAL
WR-NR HVDC B2B LINK
NORTHERN
REGION
Commissioned in Nov. 1989
WR-NR HVDC B2B LINK
Commissioned in June
2001
NORTHEASTERN
REGION
ER
WESTERN
REGION
EASTERN
REGION
BIRPARA(ER) – SALAKATI(NER)
220 KV AC LINK in April 87
(400 KV Malda-Boangigaon in April
2000)
500 MW GAZUWAKA
ER-SR HVDC B2B LINK
Commissioned in Sep. 1999
(2nd pole in March, 2005)
500 MW BHADRAWATI
WR-SR HVDC B2B LINK
SOUTHERN
REGION
Commissioned in Sept.
1997
(2nd pole in March, 1998)
5
NATIONAL GRID PHASE-1 COMPLETE
THE NATIONAL GRID : PHASE II
GORAKHPUR(NR) - MUZZAFARPUR(ER)
400 KV AC D/C Commissioned in Aug. 2006
500 MW SASARAM
500 MW VINDHYACHAL
WR-NR HVDC B2B LINK
NORTHERN
REGION
WR-NR HVDC B2B LINK
Commissioned in June 2001
Commissioned in Nov. 1989
NORTHEASTERN
REGION
ER
WESTERN
REGION
EASTERN
REGION
BIRPARA(ER) – SALAKATI(NER)
KV AC LINK in April 87
220
(400 KV Malda-Boangigaon in April2000)
500 MW GAZUWAKA
ER-SR HVDC B2B LINK
Commissioned in Sep. 1999
(2nd pole in March, 2005)
500 MW BHADRAWATI
WR-SR HVDC B2B LINK
Commissioned in Sept. 1997
(2nd pole in March, 1998)
SOUTHERN
REGION
RAIPUR(WR) – ROURKELA(ER) 400 KV
AC D/C Commissioned Mar. 2003
2000 MW TALCHER(ER)-KOLAR(SR)
HVDC LINK comissioned in SEP 2002
6
Inter Regional Links – Current Capacity
1650 MW
2700 MW
1850 MW
900 MW
33,782 MW
2433
16,680
34,867 MW
1200 MW
1200MW
2000MW
36,921 MW
Present IR
Capacity =
11,500 MW
7
Name of the link
By 2007
Inter-regional
capacity 18,400MW
NR
AGRA
AURAIYA
GORAKHPUR
MUZAFFARPUR
BALIA
KOTA
PATNA
B'SHARIFF
MALANPUR
BIRPARA
MALDA
GWALIOR
UJJAIN
VINDHYACHAL
SAHU
PURI
NER
BONGAIGAON
SALAKATI
SASARAM
KORBA
SIPAT
CHANDRAPUR RAIPUR
2000
Biharshariff – Balia
400kV D/c (Quad)
2000
Sub-total
4000
East-West
Ranchi- Sipat
400kV D/c with
series
compensation
Upgradation of
Talcher-Kolar
HVDC bipole
1000 BALIMELA
MW
Sub-total
U.SILERU
BELGAUM
Legend
HVDC BIPOLE
KS
LA
KOLAR
765 kV
400 kV
220 kV
&
P
EE
DW
HA
HVDC BACK-TO-BACK
N
ANDAMA
R
NICOBA
SR
1200
500
500
West-North
GAZUWAKA
NAGJHARI
1200
East-South
KOLHAPUR
PONDA
Patna – Balia
400kV D/c (Quad)
RANCHI
ROURKELA
TALCHER
WR
East-North
Sub-total
ER
DEHRI
BUDHIPADAR
Capacity(MW)
Gwalior – Agra
765kV S/c (initially
ch. at 400kV)
1200
Sub-total
1200
Inter-regional
capacity – By
2006
11500
GRAND TOTAL
18400
8
Inter-regional Links – By 2007
Sahupuri
Dehri
Sasaram
Allahabad
Northern
Auraiya
Kota
Singrauli
Agra
Gorakhpur
Balia
Balia
Muzaffarpur
Patna
Biharshariff
Vindhyachal
Western
Kolhapur
Ponda
Malda
Nagjhari
Korba
Bongaigaon
Budhipadar
Raipur
Ranchi
Rourkela
Sipat
Chandrapur
2850 MW
Ramagundam
Northeastern
Eastern
Jeypore
Talcher
Balimela
1400 MW
Belgaum
Salakati
1200 MW
6650 MW
2100 MW
Ujjain Gwalior
Malanpur
Birpara
3650MW
Gazuwaka
Southern
Kolar
Upper
Sileru
9
INTER-REGIONAL TRANSFER BY END OF
11th PLAN (2012)
4000 MW
NORTHERN
REGION
11850 MW
5500 MW
NORTHEASTERN
REGION
6050 MW
WESTERN
REGION
Eastern
Region
EASTERN
REGION
1400 MW
SOUTHERN
REGION
1200 MW
6150 MW
36,700 MW OF INTERREGIONAL POWER BY 2012
10
EHV Infrastructure
TRANSMISSION
VOLTAGE
OWNERSHIP
CENTRAL
TOTAL
STATE
Circuit Kilometer
+ 500 kV
HVDC
765 kV
4,372
1,504
5,876
917
409
1,326
400 kV
220 kV
40,854
9,220
22,607
98,521
63,461
107,741
132 kV*
Total
2,152
57,515
93,126
216,167
95,278
273,682
charged at 400 kV
11
INDIAN POWER SECTOR - HIERARCHICAL SET UP
CENTRAL
GOVT.
CEA
RPC
CERC
CTU
State Govt.
SERC
IPPs SGC CPPs
STU
RLDC
SLDC
CGS
Distn Cos.
Consumers
CENTRAL TRANSMISSION UTILITYREGIONAL LOAD DESPATCH CENTRE –
APEX BODY – RUN BY POWERGRID
POWERGRID
REGIONAL POWER COMMITTEE
(FORMERLY REB) – ONE AT EACH REGION
CENTRAL ELECTRICITY AUTHORITY
REGIONAL
LOAD DESPATCH
CENTRE –
CENTRAL GENERATING
STATION
SECRETARIAT TO THE ELECTRICITY
UNDER CENTRAL GOVT.POWER
APEX BODY – RUN BY POWERGRID
12
BOARDS OF THE
REGION
JOINTLY
OWNED UNITS CONSTRUCTED BY
MINISTRY – PLANNING AND ASSISITING
PUBLIC SECTOR UNDERTAKINGS
GOVT
ALL INDIA MARKET COMPOSITION
(1,27,110 in 2006) AS on 31-07-06
3%
9%
5%
46%
State Sector long term
PPA
Central Sector long
term PPA
IPP generation
Short Term Trading
37%
Balancing market
13
Source wise composition of
installed capacity in India
(1,27,110 in 2006)
AS on 31-07-06
6158, 5%
3310, 3%
32135, 26%
Hydro
Thermal
Nuclear
Wind & Others
82227, 66%
14
Energy Resource Map
Hydro
Jammu
Ludhiana
SIKKIM
Delhi
NEPAL
BHUTAN
Partabpur
Guwahati
Lucknow
Patna
Gandhinagar
Pipavav
Bhopal
WR
BANGLA
DESH
AN
ER
Vindhyachal
Indore
NER
CHICKEN
NECK
Kolkata
Korba
MM
AR
RAPP Jaipur
MY
NR
Talcher/Ib Valley
Raipur
Bhubaneswar
Coal
Tarapur
Mumbai
Hyderabad
Vizag
Simhadri
SR
Bangalore
Kayamkulam
Thiruvananthapuram
Generation
Load-Centre
Coal
Krishnapatnam
Kaiga
Kozhikode
Mangalore
LEGEND
Ennore
South Madras
Chennai
Hydro
Cuddalore
Lignite
Coastal
Kudankulam
COLOMBO
Nuclear
SRI LANKA
15
ALL INDIA GENERATION COMPOSITION
16.8, (3%)
Total Market Size = 587.4 BU
84.5, (14%)
Thermal
Hydro
Nuclear
486.1, (83%)
Total Installed Capacity 1,27,110 MW
16
Sector wise consumption of
electricity in India
6%
5%
35%
29%
3%
22%
Total Installed Capacity 1,27,110 MW
Industry
Domestic
Railways
Agriculture
Commercial
Others
17
SOUTHERN REGIONAL GRID
OVERVIEW
18
SOUTHERN REGION – GEOGRAPHY
KARNATAKA
ANDHRA
PRADESH
POPULATION :- 22.5 CRORES ( 22% OF INDIA)
AREA :- 651 (‘000 SQ KM)(19% OF INDIA)
INSTALLED CAPACITY:- 36,921 MW(29.0%)
WEATHER :- South-west monsoon
North-east monsoon
SEA COAST :- AROUND 4000 KM
TAMIL NADU
19
SR STATES – POWER SYSTEM STATISTICS
KARNATAKA
ANDHRA PRADESH
INSTALLED CAPACITY – 6180
MW
INSTALLED CAPACITY – 8944
MW
MAX DEMAND MET – 5612 MW
MAX DEMAND MET – 8241 MW
DAILY CONSUMPTION MAX –
125 MU
DAILY CONSUMPTION MAX –
171 MU
DAILY CONSUMPTION AVG – 95
MU
DAILY CONSUMPTION AVG – 142
MU
CONSUMER PROFILE –
CONSUMER PROFILE –
INDS -26%, DOM-19%, COMM7%, IRRI-39% & OTHERS-9%
INDS -27%, DOM-22%, COMM5%, IRRI-39% & OTHERS-7%
KERALA
TAMIL NADU
INSTALLED CAPACITY – 2284
MW
INSTALLED CAPACITY – 10015
MW
MAX DEMAND MET – 2602
MW
MAX DEMAND MET – 8371
MW
DAILY CONSUMPTION MAX –
41 MU
DAILY CONSUMPTION MAX –
166 MU
DAILY CONSUMPTION AVG –
34 MU
DAILY CONSUMPTION AVG –
135 MU
CONSUMER PROFILE –
CONSUMER PROFILE –
INDS -34%, DOM-44%, COMM13%, IRRI-2%& OTHERS-7%
INDS -39%, DOM-25%, COMM7%, IRRI-24% & OTHERS-5%
20
SR STATES – GEOGRAPHY
KARNATAKA
POPULATION :- 5.3 CRORES
ANDHRA PRADESH
AREA :- 192 (‘000 SQ KM)
POPULATION :- 7.6 CRORES
NO OF CONSUMERS :- 105 LAKHS
AREA :- 275 (‘000 SQ KM)
PER CAPITA CONS. :- 642 UNITS
NO OF CONSUMERS :- 162 LAKHS
MAIN AGRICULTURE CROP :COFFEE & RAGI
PER CAPITA CONS. :- 719 UNITS
MAIN AGRICULTURE CROP :- RICE
CLIMATIC CONDITION :- HOT AND
HOT & HUMID
CLIMATIC CONDITION :- HOT AND
HOT & HUMID
KERALA
POPULATION :- 3.2 CRORES
AREA :- 39 (‘000 SQ KM)
NO OF CONSUMERS :- 61 LAKHS
TAMIL NADU
PER CAPITA CONS. :- 386 UNITS
POPULATION :- 6.2 CRORES
MAIN AGRICULTURE CROP :COCONUT & SPICES
AREA :- 130 (‘000 SQ KM)
CLIMATIC CONDITION :- HUMID
NO OF CONSUMERS :- 152 LAKHS
PER CAPITA CONS. :- 866 UNITS
MAIN AGRICULTURE CROP :SUGAR CANE & OIL SEEDS
CLIMATIC CONDITION :- HOT AND
HOT & HUMID
21
INSTALLED CAPACITY IN SR
SUMMARY OF INSTALLED CAPACITY(MW)
AS ON 31.07.2006
AGENCY
HYDRO
THERMAL
GAS/DIESEL
WIND/OTHERS
NUCLEAR
TOTAL
ANDHRA PRADESH
3587
2963
272
2
---
6824
KARNATAKA
3389
1470
128
4
---
4991
KERALA
1835
---
235
2
---
2072
TAMILNADU
2137
2970
423
19
---
5549
PONDICHERRY
---
---
32
---
---
32
CENTRAL SECTOR
---
8090
360
---
880
9330
IPP
278
387
3149
4309
---
8123
TOTAL
11226
(30%)
15880
(43%)
4599
(13%)
4336
(12%)
880
(2%)
36921
(100%)
22
SOURCE-WISE INSTALLED CAPACITY OF SR
WIND/OTHERS
4337
(12%)
NUCLEAR
880
(2%)
NAPTHA/GAS/DIESEL
4599
(13%)
THERMAL
All Figures In MW
15880
(43%)
HYDRO
11226
(30%)
TOTAL 36,921 MW
23
GENERATING UNITS IN SOUTHERN REGION
UNIT CAPACITY
AP
KAR
KER
TN
THERMAL (500 MW)
2
THERMAL
(200-250 MW)
10
7
GAS/THERMAL
(100-150 MW)
9
2
3
10
24
HYDRO
(>50 MW)
27
29
16
15
87
TOTAL
48
38
19
38
165
13
TYPICAL
CGS
TOTAL
8
10
15
45
KAR
A.P
GENERATOR
SPREAD
IN SR
- HYDRO
GENERATORS ABOVE 1000 MW
KER
TN
- THERMAL
- GAS / NAPTHA
GENERATORS 500 – 1000 MW
GENERATORS BELOW 500 MW
- NUCLEAR
CPP/IPP PLANTS IN SOUTHERN REGION
Station Name
I/C in
MW
Variable
Cost (Ps)
TATA ELECTRIC
79.1
390
JINDAL
260
280
THANNEERBAVI
220
500
A.P
KAR
Station Name
I/C in
MW
Variable
Cost (Ps)
KASARGOD PCL
22
470
BSES
157
560
KUTHUNGAL
21
---
MANIYAR
12
---
KAYAMKULAM
360
580
KER
TN
Station Name
I/C
MW
Variable
Cost
(Ps)
SIMHADRI
1000
104
BSES
220
168
VEMAGIRI PGL
233
SPECTRUM
208
JEGURUPADU
EXT.
220
JEGURUPADU
216
102
LANCO
355
125
Station Name
I/C in
MW
Variable
Cost (Ps)
HITEC
15
TCPL
63.5
GMR VASAVI
196
444
SAMALPATTY
105
474
ST-CMS
250
161
P P NALLUR
330.5
550
ABAN
113
88
MADURAI POWER
106
456
ARKAY
38
104
TYPICAL
LOAD
SPREAD
IN SR
LOAD 500-1500 MW
LOAD 200-500 MW
26
400KV SUB-STATIONS IN SR
POWERGRID
STATE
OTHERS
TOTAL
AP
8
9
2
19
KAR
6
5
1
12
KER
2
TN
6
KALPAKKA
RAMAGUNDAM
2
1
2
SIMHADRI
1
GAZUWAKA
9
KHAMMAM
HYDERABAD
TOTAL
22
15
5
GMR
P
VEMAGIRI
P
JEGRUPADU EXTN
P
42
MAMIDIPALLY
VIJAYAWADA
MEHA BOOB NAGAR
RAICHUR
NAGARJUNASAGAR
P
P
MUNIRABAD
SRI SAILAM
P
KURNOOL
P
GOOTY
NARENDRA
P
CUDDAPAH
NELLORE
DAVANAGERE
KAIGA
HIRIYUR
CHITTOOR
NELAMANGALA
ALMATHI
BANGALORE
TALAGUPPA
P
MYSORE HOODY
KOLAR
P
MADRAS
HOSUR
NEYVELI TPS I (EXP)
SALEM
P
NEYVELI
-- OF NTPC
-- OF ANDHRA PRADESH
-- OF TAMIL NADU
UDUMALPET
TRICHUR
-- OF POWERGRID
P
TRICHY
P
P
P
MADURAI
-- OF KARNATAKA
-- OF NLC
-- OF NPC
TRIVENDRUM
TRANSMISSION IN SOUTHERN INDIA
VOLTAGE
LEVEL
AP
KAR
400 KV
2680
1616
220/230 KV
10274
7839
2692
6538
132/110 KV
12360
6060
3720
10220
TOTAL
25314
15515
6412
16758
KER
TN
CGS
TOTAL
10905
15201
366
27709
32360
11271
75270
ABOUT 3000 CKM OF 400 KV LINES ADDED IN
THE PAST 2 YEARS
28
TALCHER
BHADRAVATI
JEYPORE
RSTPP
KALPAKKA
KHAMMAM
HYDERABAD
VEMAGIRI
GMR
N’SAGAR
GVK
VIJAYAWADA
KURNOOL
MUNIRABAD
NARENDRA
SIMHADRI
MMDP
P
MAHABOOB NAGAR
RAICHUR
GAZUWAKA
SSLMM
GOOTY
KAIGA
P
GUTTUR
KADAPA
P
NELLORE
HIRIYUR
TALGUPPA
HOODY
NELAMANGALA
CHITTOOR
MADRAS
MAPS
KOLAR
BANGALORE
1000 MW HVDC BACK TO BACK LINK
2000 MW HVDC BIPOLE
HOSUR
500 KV HVDC LINE
NEYVELI
400 KV LINE POWERGRID
SALEM
NEYVELI TPS – 1 (EXP)
400 KV LINE APTRANSCO
400 KV LINE KPTCL
UDUMALPET
TRICHUR
P
TRICHY
400 KV LINE OPERATED AT 220 KV
P
THERMAL GENERATING STATION
MADURAI
400KV SUB-STATION
NUCLEAR STATION
29
TRIVANDRUM
SRLDC, BANGALORE
TYPICAL LOAD CURVE OF SR
23000
SUMMER
21000
EVENING
PEAK
DEMAND IN MW--->
19000
17000
WINTER
15000
MONSOON
13000
11000
1
2
3
4
5
6
7
8
9
10
11
12
13
HOUR ---->
14
15
16
17
18
19
20
21
22
23
30
24
TALCHER KOLAR
SCHEMATIC
TALCHER
Electrode
Station
Electrode
Station
KOLAR
+/- 500 KV DC line
1370 KM
400kv System
B’lore
Hoody
Cudappah
220kv system
Hosur
Salem
Udumalpet
Kolar
Madras
Chintamani
31
UI vs STOA market
(All regions)
100% power market
92% long term market
5%
UI market
3%
STOA market
32
DETAILS OF REGION WISE
STOA TRANSACTIONS IN 2005-06
12000
10126
10561
10000
8000
6000
4000
2263
2000
1241
772
623
109
35
290 444
0
NR
WR
No.Of Transactions
SR
ER
NER
Energy Approved in MU
33
Constituent-wise STOA Import/Export Energy
2004 – 05
Import
2005 – 06
All figures in MUs
Import
Export
2000
2000
1800
1800
1600
1600
1400
1400
1200
1200
1000
1000
Export
1717
808
800
800
600
600
519
503
434
358
400
200
0
0
AP
356
400
185
200
0
842
KPTCL
0
KSEB
0
TNEB
0
3
0
AP
KPTCL
0
KSEB
TNEB
34
JINDAL
Jun-06
May-06
Apr-06
Mar-06
Feb-06
Jan-06
Dec-05
Nov-05
Oct-05
Sep-05
Aug-05
Jul-05
Jun-05
May-05
Apr-05
ENERGY IN MUs --->
MONTHWISE EXPORT STOA BY CPPs/ IPPs
160
140
120
100
80
60
40
20
0
NAVBHARAT
35
SHORT TERM OPEN ACCESS(STOA) RATES
(2006-07)
NORTHERN
REGION
521.37
(2.2)
NORTHEASTERN
REGION
EASTERN
441.24 (1.8)
WESTERN
WR-ER
REGION
407.87
(1.7)
REGION
345.10
(1.4)
SOUTHERN
REGION
757.04
(3.2)
Notes: i) The indicated STOA Rates are in Rs./MW/Day.
ii) The figures shown in bracket correspond to the
indicative STOA Rates in Paise/Unit. (approx.)
36
TALCHER-KOLAR
IMPORT OF 35,726MUs FROM ER THROUGH TALCHER-KOLAR UPTO OCT – 06
YEAR --->
2002
2003
2004
2005
2006
ENERGY
(IN MU)
MAX
FLOW
(IN MW)
ENERGY
(IN MU)
MAX
FLOW
(IN MW)
ENERGY
(IN MU)
MAX
FLOW
(IN MW)
ENERGY
(IN MU)
MAX
FLOW
(IN MW)
ENERGY
(IN MU)
MAX
FLOW
(IN MW)
JAN
---
---
311
850
805
1528
852
1583
1096
1915
FEB
---
---
273
1010
701
1508
775
1865
1046
1801
MAR
---
---
491
1316
837
1600
884
1507
1117
1850
APR
---
---
473
1183
923
1500
878
1600
1083
1764
MAY
---
---
172
1026
652
1385
704
1500
1126
2000
JUN
---
---
277
994
688
1416
691
1605
929
1724
JUL
---
---
319
1075
759
1490
1254
1880
1098
1700
AUG
---
---
346
1088
628
1341
857
1600
1130
1887
SEP
6
200
512
1533
742
1552
732
1881
1155
2030
OCT
58
500
508
1458
829
1550
895
1834
1212
2030
NOV
77
500
470
1048
719
1600
999
1880
DEC
241
750
630
1383
882
1615
884
1827
TOTAL
382
4782
9165
10405
10992
AVERAGE
96
399
764
867
1099
MONTHS
MAX
FLOW
750
1533
1615
1881
2030
37
RESERVOIR LEVEL - COMPARISON
LEVEL
LEVEL
ENERGY
ENERGY
RISE IN
MU
LEVEL IN MTS
31-Oct-05
31-Oct-06
31-Oct-05
% RISE
31-Oct-06
JALAPUT
837.00
837.39
473
493
20
4
LINGANMAKKI
554.23
553.38
4492
4212
-280
-6
SUPA
560.79
561.52
2866
2931
65
2
IDUKKI
729.25
724.17
1926
1527
-399
-21
KAKKI
979.55
977.60
829
761
-68
--8
NILGIRIS
1469
1345
-125
--8
TOTAL
12055
11269
-787
-7
38
MAXIMUM & MINIMUM DRAWAL IN MW
Oct-06
STATE
AP
AVG
DRAWAL
1090
MAX DRAWAL
OCT 06
2820
ENTITLEMENT MIN DRAWAL
TILL NOW
3360
OCT 06 TILL NOW
1459
- 580 -1280
SEP-06
KAR
830
1930
2410
AUG-06
1417
40
NOV-05
MAY 05
KER
730
1210
1260
1148
- 120
1610
2500
3140
2361
230
MAY 06
PONDY
190
250
260
SEP-06
-301
SEP-05
AUG-06
TN
- 170
- 100
OCT-03
304
80
10
APR-04
39
KADAMPARAI GENERATION/PUMP
ENERGY FROM JAN - 2003
2003
2004
2005
GENERATOR
MODE
PUMP
MODE
GENERATOR
MODE
PUMP
MODE
GENERATOR
MODE
JAN
39
38
44
58
FEB
39
46
21
MAR
32
51
APR
35
MAY
2006
PUMP MODE
GENERATOR
MODE
PUMP
MODE
0
0
72
93
21
0
0
53
56
6
18
0
0
31
38
40
26
35
0
3
12
24
37
43
41
48
30
46
30
35
JUN
29
45
55
35
45
51
50
49
JUL
47
49
50
49
79
62
60
42
AUG
54
55
55
41
50
25
60
46
SEP
36
48
30
25
41
15
44
44
OCT
26
15
0
0
47
45
45
47
NOV
23
24
0
0
64
59
DEC
49
53
0
0
70
63
TOTAL
446
507
328
330
426
369
457
474
40