Power Grid Corporation Of India Ltd.

WelcomesShri Jairam Ramesh,Honble Minister of State for Power,Commerce & IndustrytoNorthern Regional Load Dispatch CenterNew Delhi

*POWERGRID - NRLDC*Presentation OutlineOverview - Indian Power SystemGrid OperationIndian Electricity Market ABT & UI Settlement SystemShort Term Open AccessTSO vs. ISO

POWERGRID - NRLDC

Overview - Indian Power System

*POWERGRID - NRLDC*Spatial Distribution Of Load Source:Powerline(Siemens Ad), Oct-2006

POWERGRID - NRLDC

One Nation One GridNEW GridSouthGridSouthWestNorthEastNortheastFive Regional GridsFive FrequenciesOctober 1991East and Northeast synchronizedMarch 2003West synchronized With East & NortheastAugust 2006North synchronized With Central GridCentral GridINDIA3,287,263 sq. km areaMore than 1 Billion people (2001 census)Installed Capacity of 141.08 GW (Jan-08)

*POWERGRID - NRLDC*N-E-W GridSOUTH Grid

POWERGRID - NRLDC

*POWERGRID - NRLDC*Regional Grids GeographicalInstalled Generation CapacityCurrent: 141,080 MWTarget for Year 2012: 200,000 MWFigures as on 31-Jan-2008

Inter regional LinkMW capacityNER-ER1,240ER-NR6,020ER-SR1,120ER-WR1,760SR-WR1,680WR-NR2,080Other 132 KV Links200Talcher Kolar HVDC Bipole2,500Total as on date17,000Target for 201237,700

POWERGRID - NRLDC

*POWERGRID - NRLDC*Diversity Time Generation Resources Load Centers Long Haulage of Power Weather Seasons

POWERGRID - NRLDC

*POWERGRID - NRLDC*Peculiarities of Regional Grids in IndiaDeficit RegionSnow fed run-of the river hydroHighly weather sensitive loadAdverse weather conditions: Fog & Dust StormVery low loadHigh hydro potentialEvacuation problemsIndustrial load and agricultural loadLow loadHigh coal reservesPit head base load plantsHigh load (40% agricultural load)Monsoon dependent hydroCHICKEN-NECK

POWERGRID - NRLDC

*POWERGRID - NRLDC*

POWERGRID - NRLDC

*POWERGRID - NRLDC*Typical Seasonal Load Curves For Northern Region

POWERGRID - NRLDC

*POWERGRID - NRLDC*WINTERMONSOONSUMMEREVENING PEAKTypical Seasonal Load Curves For Southern Region

POWERGRID - NRLDC

*POWERGRID - NRLDC*International ConnectionsBhutanTala HEP (1020 MW) 400 KVChukha HEP (336 MW) 220 KVKurichu HEP (60 MW) 132 KVNet import by IndiaNepalOver 16 links of 132/33/11 KVNet export to Nepal (about 10% of Nepals demand)

POWERGRID - NRLDC

SYNCHRONOUS INTERCONNECTION WITH BHUTAN2 x 139 + 2 x 144 kms. of400 kV lines in BhutanSnapshot from National Power System DeskTALA HEP 1020 MW (6x170 MW)(BHUTAN)DELHIBARELILUCKNOWUNNAOGORAKHPURMUZAFFARPURPURNEABINAGURIEASTERN GRIDNORTHERN GRID3200 CIRCUIT KILOMETERS TALA TRANSMISSION SYSTEM

Grid Operation

*POWERGRID - NRLDC*A Typical Dispatch FIRM SHARES IN ISGS

BILATERAL CONTRACTSSurpluses/Deficits - Balance supply and demandHoursMW

123456789101112131415161718192021222324

3634323028262422

POWERGRID - NRLDC

*POWERGRID - NRLDC*Operated as loose power poolsStates have full operational autonomyState power system treated as notional (flexible) control areaVery tight control of actual interchange by state utilities & Inter State Generating Stations not mandatedDeviations from net drawal schedules appropriately pricedRegional Grid Operation: Philosophy

POWERGRID - NRLDC

*POWERGRID - NRLDC*

POWERGRID - NRLDC

DAILY OPERATIONAL CHALLENGESFLOATING FREQUENCY: 49 - 50.5 HzVOLTAGE VARIATIONS: 380- 430 kVHIGH RAMP RATEBI-DIRECTIONAL LINE FLOWS

*POWERGRID - NRLDC*REAL TIME OPERATIONREAL TIME OPERATION STANDS ON TWO FIRM FOOTINGSIEGC THE INDIAN ELECTRICITY GRID CODEABT AVAILABILITY BASED TARIFF

POWERGRID - NRLDC

*POWERGRID - NRLDC*GRID MANAGEMENT FUNCTIONSEx-ante functionsSchedulingReal-time functionsSupervision & control of system parametersFacilitating Open Access transactionsPost-facto functionsSettlement system operationInteraction with stakeholders

POWERGRID - NRLDC

*POWERGRID - NRLDC*GRID MANAGEMENT FUNCTIONS EX-ANTE Demand Estimation and Forecasting Resource Scheduling Grid element Outage PlanningOpen Access transmission corridor reservations

POWERGRID - NRLDC

*POWERGRID - NRLDC*GRID MANAGEMENT FUNCTIONS REAL-TIME Resource re-scheduling Implementation of contractsSupervision & Control of system parametersReal-time balancingEnsuring grid security & reliabilityOutage CoordinationEnsuring power qualityLoss minimization & resource optimizationTackling Emergencies

POWERGRID - NRLDC

*POWERGRID - NRLDC*GRID MANAGEMENT FUNCTIONS POST FACTO Event Information & ReportingSequence of Event Analysis & ReplayEnergy meter data collection Data processingEnergy accountingPool Account operationUnscheduled Interchange accountReactive Energy Account

POWERGRID - NRLDC

Indian Electricity Market

*POWERGRID - NRLDC*Development of the Power Market in IndiaDevelopment of the Power Market Section 66, IE Act 2003National Electricity Policy, 12-Feb-2005, Para 5.7.1(d)Implementation of Inter-State ABT : 2002-03Metering, Scheduling and SettlementIntroduction of Open Access in Inter State Transmission : May 2004Development of PXStaff paper by CERC : July 2006Public hearing : December 2006Guidelines for setting up PX : February 2007Approval for setting up first PX : MCX, August 2007

*POWERGRID - NRLDC*BuyerSellerRegional Electricity Market in IndiaLong term contractsTSOPhysical deliveryPhysical Off takeDaily Delivery CommitmentDaily off-take commitmentPool AccountWeekly settlementOperated bySystem OperatorBuyerSellerUI UI Transmission ChargesAvailability & Energy ChargesShort term ContractGridLong term transmission contracts

*POWERGRID - NRLDC*DECENTRALIZED SCHEDULINGAvailability DeclarationEntitlementsSLDC

Requisition & Bilateral AgreementsInjection ScheduleDrawal ScheduleRevision in DCRevision in RequisitionFinalInjection ScheduleFinalDrawal ScheduleRLDCISGSTimeRevisions duringCurrent dayRevisions duringCurrent day0 to 24 hours

10:00 11:0015:0017:0022:0023:00

ABT & UI Settlement System

*POWERGRID - NRLDC*Settlement System ABT & UIABT is a scientific settlement system for contracted sale & purchase of powerHas three componentsFixed Charges or capacity chargeLinked to day-ahead declared availability/subscriptionVariable Charges or fuel chargesLinked to before the fact energy schedulesCharges for deviation from commitments

POWERGRID - NRLDC

*POWERGRID - NRLDC*Settlement System ABT & UIFrequency actuated signalSignal transmitted at the speed of dynamics to be controlledReal time pricing stretched to its physical limitsMerit orderEconomic load managementIncentives for helping the gridOpportunities for a diligent playerSimple, dispute-free weekly settlement system

POWERGRID - NRLDC

*POWERGRID - NRLDC*UI mechanismMaximizes social welfareTransparent, neutral & rigging proofDiffuses market power Ultimate open accessFacilitates reforms in the sectorEncourages trade and bilateral exchangesFacilitates exchanges (arbitrage) between regional power pools

POWERGRID - NRLDC

*POWERGRID - NRLDC*ADVANTAGES ABT & UIInculcates self discipline among participantsIncentives to those who help the gridDisincentives to those who harm the gridIs scientific commercial mechanismBrings in economy and efficiencyAchieves natural merit order in generationConducive for competition in power sectorProvides platform for power market to flourish

POWERGRID - NRLDC

*POWERGRID - NRLDC*The End Result .Frequency is collectively controlleddemocratically stabilizedWholesale market is workably competitive allocative efficiencyproductive efficiencyEconomic signal available for optimum utilization of resource investments in generation capacitySettlement isstreamlined dispute-free

POWERGRID - NRLDC

*POWERGRID - NRLDC*Balancing market guiding vectorDeficitSurplusNormal Band (IEGC)

*POWERGRID - NRLDC*Time Line For SettlementSettlement weekMonday 0000 Sunday 2400Tuesday2400Meter Data download & receipt at RLDC & preliminary checksThursday 1200Data validation, processing and computation at RLDC. Forwarded to Regional Power Committee SecretariatSaturday2400Data cross checking by Regional Power Committee Secretariat & Issue of Pool Account

Unscheduled Interchange Account Reactive Energy AccountTuesday2400Payment by utilities to the pool account managed by System Operator (RLDC)Tuesday2400Friday 2400Disbursement to utilities from the pool accountThree day grace periodFor Bank processing0.04 % per day interest on defaultersAccount Settled within 21 days Monday 2400

POWERGRID - NRLDC

*POWERGRID - NRLDC*Metering System

Meter LocationsNo. of Meters

North1941098East98419West85421Southern85463North East55201All India5172602

POWERGRID - NRLDC

Open Access

OPEN ACCESS: DEFINITION AS PER ELECTRICITY ACT, 2003Section 2 (47) Open access means the non-discriminatory provision for the use of transmission lines or distribution system or associated facilities with such lines or system by any licensee or consumer or a person engaged in generation in accordance with the regulations specified by the Appropriate Commission;

POWERGRID - NRLDC

CERC Open Access Regulations, 20083. Subject to any other regulations specified by the Commission, the long-term customer shall have first priority for using the inter-State transmission system for the designated use. These Regulations shall apply for utilization of surplus capacity available thereafter on the inter-State transmission system by virtue of-(a) Inherent design margins; (b) Margins available due to variations in power flows; and (c )Margins available due to in-built spare transmission capacity created to cater to future load growth or generation addition:

POWERGRID - NRLDC

Transmission CapacityIs a coordinated exerciseTransmission system developed asGeneration linked Associated Transmission SystemInter-regional schemesGrid strengthening schemesBeneficiaries identified aprioriTransmission system can be constructed only with commitmentN-1 criterion adoptedOptimum capacityInherent design margin available in the transmission systemTo accommodate the variation of 15% unallocated powerSkewed dispatch scenariosActual margins available in the systemGeneration outages, unbalanced load growthLaws of physics prevail

POWERGRID - NRLDC

Transmission Capacity vs Transfer Capability

POWERGRID - NRLDC

*POWERGRID - NRLDC*Total Transfer CapabilityThermal LimitStability LimitTotal Transfer CapabilityTotal Transfer Capability is the minimum of the Thermal Limit, Voltage Limit and the Stability LimitTime Power Flow

POWERGRID - NRLDC

*POWERGRID - NRLDC*Total & Available Transfer CapabilityATC = TTC TRM CBM Transfer Reliability Margin (TRM)Capacity Benefit Margin (CBM)Long Term Open Access (LTOA)Short Term Open Access (STOA)TTCATC

POWERGRID - NRLDC

*POWERGRID - NRLDC*OPEN ACCESS IN INTER-STATE TRANSMISSIONImplemented w.e.f. 6-May-2004Products Long term AccessShort term AccessMonthlyAdvanceFirst Come First ServeDay ahead Intra day transactionsPermits usage of spare transmission capacity through a transparent processOffers choice and freedom to buy & sell power

POWERGRID - NRLDC

CERC Open Access Regulations, 2008Effective 01.04.2008Regulations cover only Short-term Open AccessTransactions categorized as Bilateral and Collective (through PX)Earlier Products of Short-Term retained under Bilateral TransactionsNodal AgencyBilateral : RLDCsCollective : NLDC

POWERGRID - NRLDC

*POWERGRID - NRLDC*Time Line For Open AccessM1M2M3M4DLDL-5DL-10DL+5DOPDOP-1DOP-4Adv Application for M2Adv Application for M3, Approvals for M2Adv Application for M4,Approvals for M3Approvals for M4FCFSDay Ahead / PX LEGEND: DOP : Day of Operation DL : Last day of M1New Open Access Regulations w.e.f. 01-April-2008

POWERGRID - NRLDC

Short-Term Open Access transactionby Captive Power Plant

A typical example:From : SAIL Durgapur Steel Plant (DVC),ERTo: SAIL Bhilai Steel Plant (CSEB),WRQuantum: 20 MWSource : SAIL

POWERGRID - NRLDC

DSP/ASP CPP(2*60 MW)DVCER ISTSWR ISTSCSEBSellerCo-ordination for Scheduling, Settlement & System Operation bySeam ChangesSLDC-DVCERLDCWRLDCSLDC-ChattisgarhBSPBuyerNETWORK INVOLVED

POWERGRID - NRLDC

BSP2.466 Rs/kwhWR ISTSTSC+SOC=0.034 RsCSEBTSC+SOC=0.034 RsDSP2.33 Rs/kwhDVCTSC +SOC =0.034 RsER ISTSTSC+SOC= 0.034 Rs2.364Rs/kwh2.398Rs/kwh2.432Rs/kwhTransmission & System Operation Charges

POWERGRID - NRLDC

DSP20MWBSP17.03MWDVC2.82% Loss ER ISTS3.5% Loss WR ISTS5.5% LossCSEB3.93% Loss19.44MW18.76MW17.73MWTransmission Losses

POWERGRID - NRLDC

Transparency - Information Sharing Available Transfer Capacity (ATC) -3 months aheadPast & Current TransactionsInjection & Drawal SchedulesUn-requisitioned SurplusFrequency TrendUrgent market information unit tripping, load crash, contingencies52 week ISTS pooled lossesSTOA Rate / Procedures for capacity reservation much more on RLDCs websites

POWERGRID - NRLDC

Trade under Short-Term Open Access

POWERGRID - NRLDC

Chart1

86936

33776

4120

10175

Installed Capacity (as on 31.07.2007)

Chart2

45906

70682

18418

Sheet1

Thermal86936Central Sector45906

Hydro33776State Sector70682

Nuclear4120Pvt. Sector18418

Other-Wind & Renewable10175

Chart3

16.641778

22.5263938

23.5985933

29.839560

&A

Page &P

Volume of trade (BUs)

No. of transactions

Energy (BUs) ----->

Number of Transactions ---->

Sheet2

2004-052005-062006-072007-08

Volume of trade (BUs)16.64122.52623.59829.83

No. of transactions778393859339560

778393859339000

Sheet3

POWERGRID - NRLDC

Chart1

502382447

471572093

510961736

498751671

520601695

506351901

515962320

519801997

515722276

544642032

503572092

526101998

536931987

482881787

554051836

544362141

570323107

542782421

556012989

573613027

541292561

567722769

535722402

548082604

ALL INDIA ENERGY MET (MU)

Open Access(MU)

Open Access Share - 3-6%

ENERGY MET

ENERGY APPROVED UNDERSTOA

Energy Met(MUs)--->

Open Access (MUs)--->

Open Access vis-a-vis Energy Met

Chart3

5023824474.870814921

4715720934.4383654601

5109617363.3975262251

4987516713.3503759398

5206016953.2558586247

5063519013.7543201343

5159623204.4964725948

5198019973.8418622547

5157222764.4132474986

5446420323.7309048179

5035720924.1543380265

5261019983.7977570804

5369319873.700668616

4828817873.7007123923

5540518363.3137803447

5443621413.9330590051

5703231075.4478187684

5427824214.4603706843

5560129895.3758025935

5736130275.277104653

5412925614.7312900663

5677227694.8774043543

5357224024.4836855074

5480826044.7511312217

&A

Page &P

Chart2

4.870814921

4.4383654601

3.3975262251

3.3503759398

3.2558586247

3.7543201343

4.4964725948

3.8418622547

4.4132474986

3.7309048179

4.1543380265

3.7977570804

3.700668616

3.7007123923

3.3137803447

3.9330590051

5.4478187684

4.4603706843

5.3758025935

5.277104653

4.7312900663

4.8774043543

4.4836855074

4.7511312217

4.0550742352

3.7636239782

3.8163047348

%of Energy Approved (STOA) vs Energy Met

Short Term Open Access Market Share

Sheet1

ALL INDIA ENERGY MET Vs APPROVED ENERGY UNDER STOA

ENERGY MET (MU)ENERGY APPROVED UNDER STOA(MU)% TOTAL ENERGY MET

JAN'065023824474.9

FEB'064715720934.4

MAR'065109617363.4

APR'064987516713.4

MAY'065206016953.3

JUNE'065063519013.8

JULY'065159623204.5

AUG'065198019973.8

SEP'065157222764.4

OCT'065446420323.7

NOV'065035720924.2

DEC'065261019983.8

JAN'075369319873.7

FEB'074828817873.7

MAR'075540518363.3

APR'075443621413.9

MAY'075703231075.4

JUNE'075427824214.5

JULY'075560129895.4

AUG'075736130275.3

SEP'075412925614.7

OCT'075677227694.9

NOV'075357224024.5

DEC'075480826044.8

JAN'085563422564.1

FEB'085284819893.8

MAR'085618021443.8

AVG. % SHARE OF STOA4.2

Sheet2

ENERGY MET

Sheet3

Introduction of Day-Ahead Productfrom April,2005

POWERGRID - NRLDC

NO.OF TRANS.(LINE)

APRIL36253724

67114239593

69142352489

59194437441

69436484755

76260527601

60244484838

58372628831

707447831003

81648747JAN

YEAR'04-05

YEAR'05-06

YUEAR'06-07

YEAR'07-08

MONTHS

NO. OF TRANSACTIONS

TOTAL STOA TRANSACTIONS

TOTAL TRANS.

67

69

59

69

76

60

58

70

81

88

81

36

114

142

194

436

260

244

372

744

648

398

350

253

239

352

437

484

527

484

628

783

747

463

536

724

593

489

441

755

601

838

831

1003

1016

1108

944

NO. OF TRANSACTIONS

TOTAL TRANSACTIONS ( 2004-08)

NO.OFTRANS.

YEAR WISE LINE GRAPHTOTAL NO. OF TRANSACTIONS.

CONTINOUS LINE GRAPH

YEAR'04YEAR'05YEAR'06YEAR'07

APRIL36253724MAY'0467

MAY67114239593JUNE69

JUNE69142352489JULY59

JULY59194437441AUG'0469

AUG69436484755SEPT76

SEP76260527601OCT60

OCT60244484838NOV'0458

NOV58372628831DEC70

DEC707447831003JAN'0581

JAN816487471014FEB'0588

FEB88398463MAR81

MAR81350536APRIL36

MAY'05114

JUNE142

JULY194

AUG'05436

SEP260

OCT244

NOV'05372

DEC744

JAN648

FEB'06398

MAR350

APRIL253

MAY'06239

JUNE352

JULY437

AUG'06484

SEP527

OCT484

NOV'06628

DEC783

JAN747

FEB'06463

MAR536

APRIL724

MAY'07593

JUNE489

JULY441

AUG'07755

SEP601

OCT838

NOV'07831

DEC1003

JAN'081016

FEB'081108

MAR944

ENERGY APPR

1405

1060

1569

1943

1968

1119

1451

1716

1434

1444

1332

1091

1528

1647

1699.5

1943.2

2095.5

1818.6

1915.1

2511.3

2447.3

2093.3

1736.6

1671.8

1696

1901

2321

1997

2277

2032

2093

1998

1988

1787

1836.7

2141.3

2672

2421

2989

3027

2562

2769

2422

2605

2258

1989

MARCH'08

STOA ENERGY APPROVED(MU)YEAR 2004-07

MUs

ENERGY( CONTINOUS LINE GRAPH)

YEAR WISE LINE GRAPH

MAY '041405YEAR'04YEAR'05YEAR'06YEAR'07

JUNE'041060

JULY'041569APR109116722141

AUG'041943MAY1405152816962672

SEP1968JUNE1060164719012421

OCT1119JULY1569170023212989

NOV'041451AUG1943194319973027

DEC1716SEP1968209622772562

JAN '051434OCT1119181920322769

FEB'051444NOV1451191520932422

MARCH1332DEC1716251119982605

APRIL'051091JAN143424471988

MAY'051528FEB144420931787

JUNE1647MAR133217371837

JULY1700

AUG'051943

SEP2096

OCT1819

NOV'051915

DEC2511

JAN'062447

FEB'062093

MARCH1737

APRIL '061672

MAY'061696

JUNE1901

JULY2321

AUG'061997

SEP2277

OCT2032

NOV'062093

DEC1998

JAN'071988

FEB'071787

MARCH1837

APRIL'072141

MAY'072672

JUNE2421

JULY2989

AUG'073027

SEP2562

OCT2769

NOV'072422

DEC'072605

JAN'082258

FEB'081989

MARCH'08

ENERGY(BAR)

APR10911671.82141.3

1405152816962672

1060164719012421

15691699.523212989

19431943.219973027

19682095.522772562

11191818.620322769

14511915.120932422

17162511.319982605

14342447.31988JAN

14442093.31787FEB

13321736.61836.7MAR

YEAR'04-05

YEAR'05-06

YER'06-07

YEAR'07-08

MONTHS

MU

ENERGY APPROVED

DIFF TRANS

188332405

616308537

316274361

SAME DAY

FCFS

ADVANCE

NO. OF RANSACTIONS

STOA TRANSACTIONS

DIFF TYPE OF TRANS

SAME DAYDAY AHEADFCFSADVANCE

YEAR'05-061883013332405

YEAR'06-076164472308537

YEAR'07-083165324274361

RLDC WISE BAR GRAPH

10125.710561.2772623444

1088796322100631346

139546287292242522

NRLDC

WRLDC

SRLDC

ERLDC

NERLDC

RLDC WISE ENERGY(MU) APPROVED

RLDC WISE LINE GRAPH

21061140223

44488548118

7257853696

1113531490

1261613630

1142889610

7191049490

864951360

11301268370

11231268370

88896071100

50482894233

44379573334

58179077219

1045790531.2

13458905628.8

1454476670

105410828941

788116259.60

817116041.57.4

9918219.2104

111561318.6195.8

81851133384

43353853784

89542965741

135381850450

184737052152

232948837135

240142816183

164074722153

1190124617316

117889756290

1122865110501

NRLDC

WRLDC

ERLDC

SRLDC

RLDC WISE ENERGY APPROVED(MU)

WR ENERGY

611795429

885790818

785790370

531890488

613476428

8891082747

104911621246

9511160897

1268821865

1268613JAN

960511FEB

828538MAR

WESTERN REGION ENERGY APPROVED(MU)

YEAR 05-06

YEAR 06-07

YEAR 07-08

SR ENERGY

223334741

118219450

961.2152

028.8135

00183

041153

00316

07.4290

0104501

0195.8JAN

100384FEB

233784MAR

SOUTHERN REGION ENERGY APPROVED(MU)

YEAR 05-06

YEAR 06-07

YEAR 07-08

ER ENERGY

407365

487750

365352

495637

636716

618922

4959.617

3641.556

379.2110

3718.6JAN

7133FEB

9453MAR

EASTERN REGION ENERGY APPROVED(MU)

YEAR 05-06

YEAR 06-07

YEAR 07-08

NR ENERGY

210443895

4445811353

72510451847

111313452329

126114542401

114210541640

7197881190

8648171178

11309911122

11231115JAN

888818FEB

504433MAR

NORTHEN REGION ENERGY APPROVED(MU)

YEAR 05-06

YEAR 06-07

YEAR 07-08

RLDC WISE MU

(CONTINOUS LINE GRAPH)

ENERGY APPROVED RLDC WISEBAR GRAPH

NRLDCWRLDCSRLDCERLDCNERLDCNRLDCWRLDCSRLDCERLDCNERLDC

APRIL'05210611223407YEAR'05-0610125.710561.2772623444

MAY'054448851184833

JUNE'0572578596365YEAR'06-071088796322100631346

JULY11135310496.5

AUG'0512616130635.4YEAR'07-08139546287292242522

SEP11428890612

OCT'0571910490490.9

NOV'0586495103663.1

DEC'051130126803775.4

JAN'061123126803798.8NRLDCYEAR 05-06YEAR 06-07YEAR 07-08

FEB'068889601007171.2

MARCH5048282339475.6APRIL

APRIL '064437953347326MAY

MAY'065817902197726JUNE

JUNE'0610457901.25310JULY

JULY134589028.8560AUG

AUG'0614544760670SEP

SEP1054108241899.9OCT

OCT'067881162059.622NOV

NOV'0681711607.441.566.2DEC

DEC'069918211049.271.8JAN

JAN'071115613195.818.645FEB

FEB'078185113843340MAR

MARCH4335387845328

APRIL'078954297416511

MAY'071353818450502

JUNE'071847370152520

JULY2329488135370

AUG'072401428183160

SEP1640747153220

OCT'0711901246316172

NOV'071178897290560

DEC'0711228655011107

JAN

FEB'08

MARCH'08

07-08

14386

9224

YEAR 2007-08 (Upto DEC'07)

06-07

16377

7219

YEAR 2006-07

05-06

16534.9

5991

YEAR 2005-06

INTER-INTRA

NRLDC(TOTAL)INTERINTRAWRLDC(TOTAL)INTERINTRASRLDC(TOTAL)INTERINTRAERLDC(TOTAL)INTERINTRANERLDC(TOTAL)INTERINTRATOTALINTERINTRA

YEAR'05-0610125.75851.7427410561.210180.238177212664662310751644427017422525.916534.95991

INTERINTRA

YEAR'06-07108876361452696329194438210061114896318754434612422223596163777219

INTERINTRA

YEAR'07-08139547856609862875409878292283420884252691562218423610143869224

Chart1

11264157917442000

0.04166666671264157917442000

0.08333333331264157917442000

0.1251264157917442000

0.16666666671264157917442000

0.20833333331264157917442000

0.251264132913462000

0.29166666671264132913462000

0.33333333331264132913462000

0.3751264132913462000

0.41666666671264148915062000

0.45833333331264148915062000

0.51264148915062000

0.54166666671264148915062000

0.58333333331264148915062000

0.6251264148915062000

0.66666666671264148915062000

0.70833333331285131013271750

0.751285131013271750

0.79166666671285131013271750

0.83333333331285131013271750

0.8751285131013271750

0.91666666671285131013271750

0.95833333331285135015151750

241264132914942000

MARGIN AVIALIABLE

WR-NRSTOA APPROVED

ER-NRSTOA APPROVED

LTOA

TOTAL ATC

LTOA

ER-NR STOA APPR.

WR-NR STOA APPR.

MARGIN AVAILABLE

ATC & MARGIN AVAILABLE FOR IMPORT(MW) TO NORTHEN REGION IN FEB'08

Chart3

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166123612492240

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166116611791800

1166116611791800

1166116611791800

1166116611791800

1166116611791800

1166116611791800

1166116611792200

MARGIN AVAILABLE

LTOA

ER-NR STOA APPROVED

WR-NR STOA APPROVED

ATC & MARGIN AVAILABLE FOR IMPORT TO NORTHEN REGION IN MARCH'08

Sheet1

FEBRUARY

TIMELTOAER-NR LINKWR-NR LINKTOTAL ATCMARGIN AVAILABLEER-NR LINKWR-NR LINKMARGIN AVAILABLE

0:001264157917442000256315165256

1:001264157917442000256315165256

2:001264157917442000256315165256

3:001264157917442000256315165256

4:001264157917442000256315165256

5:001264157917442000256315165256

6:0012641329134620006546517654

7:0012641329134620006546517654

8:0012641329134620006546517654

9:0012641329134620006546517654

10:00126414891506200049422517494

11:00126414891506200049422517494

12:00126414891506200049422517494

13:00126414891506200049422517494

14:00126414891506200049422517494

15:00126414891506200049422517494

16:00126414891506200049422517494

17:0012851310132717504232517423

18:0012851310132717504232517423

19:0012851310132717504232517423

20:0012851310132717504232517423

21:0012851310132717504232517423

22:0012851310132717504232517423

23:00128513501515175023565165235

0:00126413291494200050665165506

MARCH

TIMELTOAER-NR LINKWR-NR LINKTOTAL ATCMARGIN AVAILABLEER-NR LINKWR-NR LINK

0:0011661166117922001021013

1:0011661166117922001021013

2:0011661166117922001021013

3:0011661166117922001021013

4:0011661166117922001021013

5:0011661166117922001021013

6:0011661166117922001021013

7:0011661166117922001021013

8:0011661166117922001021013

9:0011661236124922409917013

10:0011661236124922009517013

11:0011661236124922009517013

12:0011661236124922009517013

13:0011661236124922009517013

14:0011661236124922009517013

15:0011661236124922009517013

16:0011661236124922009517013

17:0011661236124922009517013

18:001166116611791800621013

19:001166116611791800621013

20:001166116611791800621013

21:001166116611791800621013

22:001166116611791800621013

23:001166116611791800621013

0:0011661166117922001021013

POWERGRID - NRLDC

NO.OF TRANS.(LINE)

APRIL36253724

67114239593

69142352488

59194437484

69436484756

76260527603

60244484867

58372628848

707447831080

81648747JAN

YEAR'04-05

YEAR'05-06

YUEAR'06-07

YEAR'07-08

MONTHS

NO. OF TRANSACTIONS

TOTAL STOA TRANSACTIONS

TOTAL TRANS.

67

69

59

69

76

60

58

70

81

88

81

36

114

142

194

436

260

244

372

744

648

398

350

253

239

352

437

484

527

484

628

783

747

463

536

724

593

489

441

755

601

838

831

1003

JAN

FEB

MAR

MONTHS

NO. OF TRANSACTIONS

TOTAL STOA TRANSACTIONS

NO.OFTRANS.

YEAR WISE LINE GRAPHTOTAL NO. OF TRANSACTIONS.

CONTINOUS LINE GRAPH

YEAR'04YEAR'05YEAR'06YEAR'07

APRIL36253724MAY'0467

MAY67114239593JUNE69

JUNE69142352488JULY59

JULY59194437484AUG'0469

AUG69436484756SEPT76

SEP76260527603OCT60

OCT60244484867NOV'0458

NOV58372628848DEC70

DEC707447831080JAN'0581

JAN816487471072FEB'0588

FEB883984631101MAR81

MAR81350536944APRIL36

MAY'05114

JUNE142

JULY194

AUG'05436

SEP260

OCT244

NOV'05372

DEC744

JAN648

FEB'06398

MAR350

APRIL253

MAY'06239

JUNE352

JULY437

AUG'06484

SEP527

OCT484

NOV'06628

DEC783

JAN747

FEB'06463

MAR536

APRIL724

MAY'07593

JUNE489

JULY441

AUG'07755

SEP601

OCT838

NOV'07831

DEC1003

JAN

FEB

MAR

ENERGY APPR

1405

1060

1569

1943

1968

1119

1451

1716

1434

1444

1332

1091

1528

1647

1699.5

1943.2

2095.5

1818.6

1915.1

2511.3

2447.3

2093.3

1736.6

1671.8

1696

1901

2321

1997

2277

2032

2093

1998

1988

1787

1836.7

2141.3

2672

2421

2989

3027

2562

2769

2422

2605

2258

1989

2144

Month---->

Approved Energy (MUs)------->

ENERGY APPROVED(MUs)- 2004-08

ENERGY(BAR)

APR10911671.82141.3

1405152816962672

1060164719012421

15691699.523212989

19431943.219973027

19682095.522772562

11191818.620322769

14511915.120932422

17162511.319982605

14342447.31988JAN

14442093.31787FEB

13321736.61836.7MAR

YEAR'04-05

YEAR'05-06

YER'06-07

YEAR'07-08

MONTHS

MU

ENERGY APPROVED

MUs

ENERGY( CONTINOUS LINE GRAPH)

YEAR WISE LINE GRAPH

MAY '041405YEAR'04YEAR'05YEAR'06YEAR'07

JUNE'041060

JULY'041569APR109116722141

AUG'041943MAY1405152816962672

SEP1968JUNE1060164719012421

OCT1119JULY1569170023212989

NOV'041451AUG1943194319973027

DEC1716SEP1968209622772562

JAN '051434OCT1119181920322769

FEB'051444NOV1451191520932422

MARCH1332DEC1716251119982605

APRIL'051091JAN143424471988

MAY'051528FEB144420931787

JUNE1647MAR133217371837

JULY1700

AUG'051943

SEP2096

OCT1819

NOV'051915

DEC2511

JAN'062447

FEB'062093

MARCH1737

APRIL '061672

MAY'061696

JUNE1901

JULY2321

AUG'061997

SEP2277

OCT2032

NOV'062093

DEC1998

JAN'071988

FEB'071787

MARCH1837

APRIL'072141

MAY'072672

JUNE2421

JULY2989

AUG'073027

SEP2562

OCT2769

NOV'072422

DEC'072605

JAN'082258

FEB'081989

MARCH'082144

DIFF TRANS

188332405

616308537

316274361

SAME DAY

FCFS

ADVANCE

NO. OF RANSACTIONS

STOA TRANSACTIONS

DIFF TYPE OF TRANS

SAME DAYDAY AHEADFCFSADVANCE

YEAR'05-061883013332405

YEAR'06-076164472308537

YEAR'07-084378237392494

RLDC WISE BAR GRAPH

10125.710561.2772623444

1088796322100631346

139546287292242522

NRLDC

WRLDC

SRLDC

ERLDC

NERLDC

RLDC WISE ENERGY(MU) APPROVED

RLDC WISE LINE GRAPH

21061140223

44488548118

7257853696

1113531490

1261613630

1142889610

7191049490

864951360

11301268370

11231268370

88896071100

50482894233

44379573334

58179077219

1045790531.2

13458905628.8

1454476670

105410828941

788116259.60

817116041.57.4

9918219.2104

111561318.6195.8

81851133384

43353853784

89542965741

135381850450

184737052152

232948837135

240142816183

164074722153

1190124617316

117889756290

1122865110501

NRLDC

WRLDC

ERLDC

SRLDC

RLDC WISE ENERGY APPROVED(MU)

WR ENERGY

611795429

885790818

785790370

531890488

613476428

8891082747

104911621246

9511160897

1268821865

1268613JAN

960511FEB

828538MAR

WESTERN REGION ENERGY APPROVED(MU)

YEAR 05-06

YEAR 06-07

YEAR 07-08

SR ENERGY

223334741

118219450

961.2152

028.8135

00183

041153

00316

07.4290

0104501

0195.8JAN

100384FEB

233784MAR

SOUTHERN REGION ENERGY APPROVED(MU)

YEAR 05-06

YEAR 06-07

YEAR 07-08

ER ENERGY

407365

487750

365352

495637

636716

618922

4959.617

3641.556

379.2110

3718.6JAN

7133FEB

9453MAR

EASTERN REGION ENERGY APPROVED(MU)

YEAR 05-06

YEAR 06-07

YEAR 07-08

NR ENERGY

210443895

4445811353

72510451847

111313452329

126114542401

114210541640

7197881190

8648171178

11309911122

11231115JAN

888818FEB

504433MAR

NORTHEN REGION ENERGY APPROVED(MU)

YEAR 05-06

YEAR 06-07

YEAR 07-08

RLDC WISE MU

(CONTINOUS LINE GRAPH)

ENERGY APPROVED RLDC WISEBAR GRAPH

NRLDCWRLDCSRLDCERLDCNERLDCNRLDCWRLDCSRLDCERLDCNERLDC

APRIL'05210611223407YEAR'05-0610125.710561.2772623444

MAY'054448851184833

JUNE'0572578596365YEAR'06-071088796322100631346

JULY11135310496.5

AUG'0512616130635.4YEAR'07-08139546287292242522

SEP11428890612

OCT'0571910490490.9

NOV'0586495103663.1

DEC'051130126803775.4

JAN'061123126803798.8NRLDCYEAR 05-06YEAR 06-07YEAR 07-08

FEB'068889601007171.2

MARCH5048282339475.6APRIL

APRIL '064437953347326MAY

MAY'065817902197726JUNE

JUNE'0610457901.25310JULY

JULY134589028.8560AUG

AUG'0614544760670SEP

SEP1054108241899.9OCT

OCT'067881162059.622NOV

NOV'0681711607.441.566.2DEC

DEC'069918211049.271.8JAN

JAN'071115613195.818.645FEB

FEB'078185113843340MAR

MARCH4335387845328

APRIL'078954297416511

MAY'071353818450502

JUNE'071847370152520

JULY2329488135370

AUG'072401428183160

SEP1640747153220

OCT'0711901246316172

NOV'071178897290560

DEC'0711228655011107

JAN115159739312742

FEB'0891244245614744

MARCH'0845548695220745

07-08

14386

9224

YEAR 2007-08 (Upto DEC'07)

06-07

16377

7219

YEAR 2006-07

05-06

16534.9

5991

YEAR 2005-06

INTER-INTRA

NRLDC(TOTAL)INTERINTRAWRLDC(TOTAL)INTERINTRASRLDC(TOTAL)INTERINTRAERLDC(TOTAL)INTERINTRANERLDC(TOTAL)INTERINTRATOTALINTERINTRA

YEAR'05-0610125.75851.7427410561.210180.238177212664662310751644427017422525.916534.95991

INTERINTRA

YEAR'06-07108876361452696329194438210061114896318754434612422223596163777219

INTERINTRA

YEAR'07-08139547856609862875409878292283420884252691562218423610143869224

Chart1

11264157917442000

0.04166666671264157917442000

0.08333333331264157917442000

0.1251264157917442000

0.16666666671264157917442000

0.20833333331264157917442000

0.251264132913462000

0.29166666671264132913462000

0.33333333331264132913462000

0.3751264132913462000

0.41666666671264148915062000

0.45833333331264148915062000

0.51264148915062000

0.54166666671264148915062000

0.58333333331264148915062000

0.6251264148915062000

0.66666666671264148915062000

0.70833333331285131013271750

0.751285131013271750

0.79166666671285131013271750

0.83333333331285131013271750

0.8751285131013271750

0.91666666671285131013271750

0.95833333331285135015151750

241264132914942000

MARGIN AVIALIABLE

WR-NRSTOA APPROVED

ER-NRSTOA APPROVED

LTOA

TOTAL ATC

LTOA

ER-NR STOA APPR.

WR-NR STOA APPR.

MARGIN AVAILABLE

ATC & MARGIN AVAILABLE FOR IMPORT(MW) TO NORTHEN REGION IN FEB'08

Chart3

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166123612492240

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166116611791800

1166116611791800

1166116611791800

1166116611791800

1166116611791800

1166116611791800

1166116611792200

MARGIN AVAILABLE

LTOA

ER-NR STOA APPROVED

WR-NR STOA APPROVED

ATC & MARGIN AVAILABLE FOR IMPORT TO NORTHEN REGION IN MARCH'08

Sheet1

FEBRUARY

TIMELTOAER-NR LINKWR-NR LINKTOTAL ATCMARGIN AVAILABLEER-NR LINKWR-NR LINKMARGIN AVAILABLE

0:001264157917442000256315165256

1:001264157917442000256315165256

2:001264157917442000256315165256

3:001264157917442000256315165256

4:001264157917442000256315165256

5:001264157917442000256315165256

6:0012641329134620006546517654

7:0012641329134620006546517654

8:0012641329134620006546517654

9:0012641329134620006546517654

10:00126414891506200049422517494

11:00126414891506200049422517494

12:00126414891506200049422517494

13:00126414891506200049422517494

14:00126414891506200049422517494

15:00126414891506200049422517494

16:00126414891506200049422517494

17:0012851310132717504232517423

18:0012851310132717504232517423

19:0012851310132717504232517423

20:0012851310132717504232517423

21:0012851310132717504232517423

22:0012851310132717504232517423

23:00128513501515175023565165235

0:00126413291494200050665165506

MARCH

TIMELTOAER-NR LINKWR-NR LINKTOTAL ATCMARGIN AVAILABLEER-NR LINKWR-NR LINK

0:0011661166117922001021013

1:0011661166117922001021013

2:0011661166117922001021013

3:0011661166117922001021013

4:0011661166117922001021013

5:0011661166117922001021013

6:0011661166117922001021013

7:0011661166117922001021013

8:0011661166117922001021013

9:0011661236124922409917013

10:0011661236124922009517013

11:0011661236124922009517013

12:0011661236124922009517013

13:0011661236124922009517013

14:0011661236124922009517013

15:0011661236124922009517013

16:0011661236124922009517013

17:0011661236124922009517013

18:001166116611791800621013

19:001166116611791800621013

20:001166116611791800621013

21:001166116611791800621013

22:001166116611791800621013

23:001166116611791800621013

0:0011661166117922001021013

Intra and Inter Regional Transactions

POWERGRID - NRLDC

NO.OF TRANS.(LINE)

APRIL36253724

67114239593

69142352489

59194437441

69436484755

76260527601

60244484838

58372628831

707447831003

816487471014

YEAR'04-05

YEAR'05-06

YUEAR'06-07

YEAR'07-08

TOTAL TRANS.

67

69

59

69

76

60

58

70

81

88

81

36

114

142

194

436

260

244

372

744

648

398

350

253

239

352

437

484

527

484

628

783

747

463

536

724

593

489

441

755

601

838

831

1003

1014

NO. OF TRANSACTIONS

TOTAL STOA TRANSACTIONSYEAR 2004-05

NO.OFTRANS.

YEAR WISE LINE GRAPHTOTAL NO. OF TRANSACTIONS.

CONTINOUS LINE GRAPH

YEAR'04YEAR'05YEAR'06YEAR'07

APRIL36253724MAY'0467

MAY67114239593JUNE69

JUNE69142352489JULY59

JULY59194437441AUG'0469

AUG69436484755SEPT76

SEP76260527601OCT60

OCT60244484838NOV'0458

NOV58372628831DEC70

DEC707447831003JAN'0581

JAN816487471014FEB'0588

FEB88398463MAR81

MAR81350536APRIL36

MAY'05114

JUNE142

JULY194

AUG'05436

SEP260

OCT244

NOV'05372

DEC744

JAN648

FEB'06398

MAR350

APRIL253

MAY'06239

JUNE352

JULY437

AUG'06484

SEP527

OCT484

NOV'06628

DEC783

JAN747

FEB'06463

MAR536

APRIL724

MAY'07593

JUNE489

JULY441

AUG'07755

SEP601

OCT838

NOV'07831

DEC1003

JAN1014

FEB

MAR

ENERGY APPR

1405

1060

1569

1943

1968

1119

1451

1716

1434

1444

1332

1091

1528

1647

1699.5

1943.2

2095.5

1818.6

1915.1

2511.3

2447.3

2093.3

1736.6

1671.8

1696

1901

2321

1997

2277

2032

2093

1998

1988

1787

1836.7

2141.3

2672

2421

2989

3027

2562

2769

2422

2605

2305

STOA ENERGY APPROVED(MU)YEAR 2004-07

ENERGY(BAR)

APR10911671.82141.3

1405152816962672

1060164719012421

15691699.523212989

19431943.219973027

19682095.522772562

11191818.620322769

14511915.120932422

17162511.319982605

14342447.319882307

14442093.31787FEB

13321736.61836.7MAR

YEAR'04-05

YEAR'05-06

YER'06-07

YEAR'07-08

MONTHS

MU

ENERGY APPROVED

MUs

ENERGY( CONTINOUS LINE GRAPH)

YEAR WISE LINE GRAPH

MAY '041405YEAR'04YEAR'05YEAR'06YEAR'07

JUNE'041060

JULY'041569APR109116722141

AUG'041943MAY1405152816962672

SEP1968JUNE1060164719012421

OCT1119JULY1569170023212989

NOV'041451AUG1943194319973027

DEC1716SEP1968209622772562

JAN '051434OCT1119181920322769

FEB'051444NOV1451191520932422

MARCH1332DEC1716251119982605

APRIL'051091JAN1434244719882307

MAY'051528FEB144420931787

JUNE1647MAR133217371837

JULY1700

AUG'051943

SEP2096

OCT1819

NOV'051915

DEC2511

JAN'062447

FEB'062093

MARCH1737

APRIL '061672

MAY'061696

JUNE1901

JULY2321

AUG'061997

SEP2277

OCT2032

NOV'062093

DEC1998

JAN'071988

FEB'071787

MARCH1837

APRIL'072141

MAY'072672

JUNE2421

JULY2989

AUG'073027

SEP2562

OCT2769

NOV'072422

DEC'072605

JAN2305

FEB'08

MARCH'08

DIFF TRANS

188332405

616308537

316274361

SAME DAY

FCFS

ADVANCE

NO. OF RANSACTIONS

STOA TRANSACTIONS

DIFF TYPE OF TRANS

SAME DAYDAY AHEADFCFSADVANCE

YEAR'05-061883013332405

YEAR'06-076164472308537

YEAR'07-083165324274361

RLDC WISE BAR GRAPH

10125.710561.2772623444

1088796322100631346

139546287292242522

NRLDC

WRLDC

SRLDC

ERLDC

NERLDC

RLDC WISE ENERGY(MU) APPROVED

RLDC WISE LINE GRAPH

2106114040

4448854848

7257853636

11135314949

12616136363

11428896161

71910494949

8649513636

113012683737

112312683737

8889607171

5048289494

4437957373

5817907777

10457905353

13458905656

14544766767

105410828989

788116259.659.6

817116041.541.5

9918219.29.2

111561318.618.6

8185113333

4335385353

8954296565

13538185050

18473705252

23294883737

24014281616

16407472222

119012461717

11788975656

1122865110110

1133612127.6127.6

NRLDC

WRLDC

ERLDC

SRLDC

RLDC WISE ENERGY APPROVED(MU)

WR ENERGY

611795429

885790818

785790370

531890488

613476428

8891082747

104911621246

9511160897

1268821865

1268613612

960511FEB

828538MAR

WESTERN REGION ENERGY APPROVED(MU)

YEAR 05-06

YEAR 06-07

YEAR 07-08

SR ENERGY

223334741

118219450

961.2152

028.8135

00183

041153

00316

07.4290

0104501

0195.8393

100384FEB

233784MAR

SOUTHERN REGION ENERGY APPROVED(MU)

YEAR 05-06

YEAR 06-07

YEAR 07-08

ER ENERGY

407365

487750

365352

495637

636716

618922

4959.617

3641.556

379.2110

3718.6127.6

7133FEB

9453MAR

EASTERN REGION ENERGY APPROVED(MU)

YEAR 05-06

YEAR 06-07

YEAR 07-08

NR ENERGY

210443895

4445811353

72510451847

111313452329

126114542401

114210541640

7197881190

8648171178

11309911122

112311151133

888818FEB

504433MAR

NORTHEN REGION ENERGY APPROVED(MU)

YEAR 05-06

YEAR 06-07

YEAR 07-08

RLDC WISE MU

(CONTINOUS LINE GRAPH)

ENERGY APPROVED RLDC WISEBAR GRAPH

NRLDCWRLDCSRLDCERLDCNERLDCNRLDCWRLDCSRLDCERLDCNERLDC

APRIL'05210611223407YEAR'05-0610125.710561.2772623444

MAY'054448851184833

JUNE'0572578596365YEAR'06-071088796322100631346

JULY11135310496.5

AUG'0512616130635.4YEAR'07-08139546287292242522

SEP11428890612

OCT'0571910490490.9

NOV'0586495103663.1

DEC'051130126803775.4

JAN'061123126803798.8NRLDCYEAR 05-06YEAR 06-07YEAR 07-08

FEB'068889601007171.2

MARCH5048282339475.6APRIL

APRIL '064437953347326MAY

MAY'065817902197726JUNE

JUNE'0610457901.25310JULY

JULY134589028.8560AUG

AUG'0614544760670SEP

SEP1054108241899.9OCT

OCT'067881162059.622NOV

NOV'0681711607.441.566.2DEC

DEC'069918211049.271.8JAN

JAN'071115613195.818.645FEB

FEB'078185113843340MAR

MARCH4335387845328

APRIL'078954297416511

MAY'071353818450502

JUNE'071847370152520

JULY2329488135370

AUG'072401428183160

SEP1640747153220

OCT'0711901246316172

NOV'071178897290560

DEC'0711228655011107

JAN1133612393127.641.5

FEB'0891244245611365

MARCH'08

07-08

17547

12284

YEAR 2007-08

06-07

16377

7219

YEAR 2006-07

05-06

16534.9

5991

YEAR 2005-06

INTER-INTRA

NRLDC(TOTAL)INTERINTRAWRLDC(TOTAL)INTERINTRASRLDC(TOTAL)INTERINTRAERLDC(TOTAL)INTERINTRANERLDC(TOTAL)INTERINTRATOTALINTERINTRA

YEAR'05-0610125.75851.7427410561.210180.238177212664662310751644427017422525.916534.95991

INTERINTRA

YEAR'06-07108876361452696329194438210061114896318754434612422223596163777219

INTERINTRA

YEAR'07-081395478566098628754098782922834208842526915622184298311754712284

Chart1

11264157917442000

0.04166666671264157917442000

0.08333333331264157917442000

0.1251264157917442000

0.16666666671264157917442000

0.20833333331264157917442000

0.251264132913462000

0.29166666671264132913462000

0.33333333331264132913462000

0.3751264132913462000

0.41666666671264148915062000

0.45833333331264148915062000

0.51264148915062000

0.54166666671264148915062000

0.58333333331264148915062000

0.6251264148915062000

0.66666666671264148915062000

0.70833333331285131013271750

0.751285131013271750

0.79166666671285131013271750

0.83333333331285131013271750

0.8751285131013271750

0.91666666671285131013271750

0.95833333331285135015151750

241264132914942000

MARGIN AVIALIABLE

WR-NRSTOA APPROVED

ER-NRSTOA APPROVED

LTOA

TOTAL ATC

LTOA

ER-NR STOA APPR.

WR-NR STOA APPR.

MARGIN AVAILABLE

ATC & MARGIN AVAILABLE FOR IMPORT(MW) TO NORTHEN REGION IN FEB'08

Chart3

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166116611792200

1166123612492240

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166123612492200

1166116611791800

1166116611791800

1166116611791800

1166116611791800

1166116611791800

1166116611791800

1166116611792200

MARGIN AVAILABLE

LTOA

ER-NR STOA APPROVED

WR-NR STOA APPROVED

ATC & MARGIN AVAILABLE FOR IMPORT TO NORTHEN REGION IN MARCH'08

Sheet1

FEBRUARY

TIMELTOAER-NR LINKWR-NR LINKTOTAL ATCMARGIN AVAILABLEER-NR LINKWR-NR LINKMARGIN AVAILABLE

0:001264157917442000256315165256

1:001264157917442000256315165256

2:001264157917442000256315165256

3:001264157917442000256315165256

4:001264157917442000256315165256

5:001264157917442000256315165256

6:0012641329134620006546517654

7:0012641329134620006546517654

8:0012641329134620006546517654

9:0012641329134620006546517654

10:00126414891506200049422517494

11:00126414891506200049422517494

12:00126414891506200049422517494

13:00126414891506200049422517494

14:00126414891506200049422517494

15:00126414891506200049422517494

16:00126414891506200049422517494

17:0012851310132717504232517423

18:0012851310132717504232517423

19:0012851310132717504232517423

20:0012851310132717504232517423

21:0012851310132717504232517423

22:0012851310132717504232517423

23:00128513501515175023565165235

0:00126413291494200050665165506

MARCH

TIMELTOAER-NR LINKWR-NR LINKTOTAL ATCMARGIN AVAILABLEER-NR LINKWR-NR LINK

0:0011661166117922001021013

1:0011661166117922001021013

2:0011661166117922001021013

3:0011661166117922001021013

4:0011661166117922001021013

5:0011661166117922001021013

6:0011661166117922001021013

7:0011661166117922001021013

8:0011661166117922001021013

9:0011661236124922409917013

10:0011661236124922009517013

11:0011661236124922009517013

12:0011661236124922009517013

13:0011661236124922009517013

14:0011661236124922009517013

15:0011661236124922009517013

16:0011661236124922009517013

17:0011661236124922009517013

18:001166116611791800621013

19:001166116611791800621013

20:001166116611791800621013

21:001166116611791800621013

22:001166116611791800621013

23:001166116611791800621013

0:0011661166117922001021013

ApprovedActive

POWERGRID - NRLDC

Chart1

134

197

229

2712

Approved Licencee

Active

No. of Players -------->

Number of Trading License issued by CERC

Sheet2

Approved LicenceeActive

2004-05134

2005-06197

2006-07229

2007-082712

VINERGY

VISA

KALYANI

Sheet3

S. No.Name of ApplicantLicence issued onCategoryApplicable to whole India

1Tata Power Trading Company Ltd.,9th June, 2004F CategoryWhole of India

2Adani Enterprises Ltd.,9th June, 2004F CategoryWhole of India

3PTC India Limited30th June,2004F CategoryWhole of India

4Reliance Energy Trading Ltd.30th June,2004F Category

5Vinergy International Private Limited,12th July,2004B Category

6Lanco Electric Utility Limited,23th July,2004F CategoryExcept J&k

7MMTC Limited23th July,2004C CategoryWhole of India

8NTPC Vidyut Vyapar Nigam Ltd.23th July,2004F CategoryWhole of India

9DLF Limited,2nd Nov,2004A CategoryExcept J&k

10Jindal Steel & Power Limited2nd Nov,2004A CategoryExcept J&k

11Chhattisgarh Electricity Company Ltd.3rd Nov,2004A CategoryExcept J&k

12GMR Ltd.9th Nov,2004A CategoryExcept J&k

13Karam Chand Thapar & Bros. (Coal Sales) Limited27th Jan,2005F Category

14Subhash Kabini Power Corporation Ltd.26th May,2005`A` CategoryExcept J&k

15Maheshwary Ispat Limited19th July,2005`A` CategoryExcept J&k

16Special Blasts Ltd.21st July,2005`A` CategoryExcept J&k

17Instinct advertisement & Marketing Limited7th Sep,2005`A CategoryExcept J&k

18Essar Electric Power Development Corporation Limited14th Dec,2005C CategoryExcept J&k

19Suryachakra Power Corporation Ltd.22nd Feb,2006`A` CategoryExcept J&k

20JSW Power Trading Company Limited25th April,2006`F` CategoryWhole of India

21GEA Energy System (India) Limited7thDec,2006`F` CategoryWhole of India

22Malaxmi Energy Trading Private Limited12th Dec,2006`A` CategoryExcept J&k

23Visa Power Limited,Kolkata28th June,2007B CategoryWhole of India

24Kalyani Power Development Private Limited21st Aug,2007F CategoryExcept J&k

25Patni Projects Private Limited23rd Aug,2007C CategoryExcept J&k

26Ispat Energy Limited30th Aug,2007`F` CategoryWhole of India

27Balaji Biomass Power Private Limited22nd Jan,08`A` CategoryExcept J&k

Sheet1

S. No.Name of ApplicantLicence issued onCategoryApplicable to whole India

1Tata Power Trading Company Ltd.,9th June, 2004F CategoryWhole of India

2Adani Enterprises Ltd.,9th June, 2004F CategoryWhole of India

3PTC India Limited30th June,2004F CategoryWhole of India

4Reliance Energy Trading Ltd.30th June,2004F Category

5Sumex Organics Private Limited12th July,2004B CategoryExcept J&k

6Vinergy International Private Limited,12th July,2004B Category

7Lanco Electric Utility Limited,23th July,2004F CategoryExcept J&k

8MMTC Limited23th July,2004C CategoryWhole of India

9NTPC Vidyut Vyapar Nigam Ltd.23th July,2004F CategoryWhole of India

10DLF Limited,2nd Nov,2004A CategoryExcept J&k

11Jindal Steel & Power Limited2nd Nov,2004A CategoryExcept J&k

12Chhattisgarh Electricity Company Ltd.3rd Nov,2004A CategoryExcept J&k

13GMR Ltd.9th Nov,2004A CategoryExcept J&k

14Karam Chand Thapar & Bros. (Coal Sales) Limited27th Jan,2005F Category

15Subhash Kabini Power Corporation Ltd.26th May,2005`A` CategoryExcept J&k

16Maheshwary Ispat Limited19th July,2005`A` CategoryExcept J&k

17Special Blasts Ltd.21st July,2005`A` CategoryExcept J&k

18Instinct advertisement & Marketing Limited7th Sep,2005`A CategoryExcept J&k

19Essar Electric Power Development Corporation Limited14th Dec,2005C CategoryExcept J&k

20Suryachakra Power Corporation Ltd.22nd Feb,2006`A` CategoryExcept J&k

21JSW Power Trading Company Limited25th April,2006`F` CategoryWhole of India

22GEA Energy System (India) Limited7thDec,2006`F` CategoryWhole of India

23Malaxmi Energy Trading Private Limited12th Dec,2006`A` CategoryExcept J&k

24Visa Power Limited,Kolkata28th June,2007B CategoryWhole of India

25Kalyani Power Development Private Limited21st Aug,2007F CategoryExcept J&k

26Patni Projects Private Limited23rd Aug,2007C CategoryExcept J&k

27Ispat Energy Limited30th Aug,2007`F` CategoryWhole of India

28Balaji Biomass Power Private Limited22nd Jan,08`A` CategoryExcept J&k

POWERGRID - NRLDC

Chart3

57912

34465562

24323247

45647184

2004-05

2005-06

2006-07

2007-08

Number of Active Market Players

Sheet2

PSEB5573.26

MSEDCL3788.45

DTL2021.36

TNEB1652.80

MPPTCL1567.90

GUVNL1556.32

HPGCL1454.43

CSEB1220.54

UPPCL567.05

WBSEB498.48

J&K453.22

APPCC434.36

RPPC402.45

HPSEB394.63

UPCL385.19

TATA POWER338.99

MSETCL227.10

MEGHALAYA216.78

CESC157.44

MPSEB155.70

SAIL142.64

ASEB128.18

JVVNL107.54

UTC70.48

AVVNL32.62

JDVVNL24.15

APTRANSCO11.83

NPCL(UP)7.64

GOA4.21

BESCOM2.30

Sheet1

TRADERSELLERBUYERTotal Participating Utilities

2004-055342445

2005-067463264

2006-079553271

2007-0812624784

2004-052005-062006-072007-08

Trader57912

Seller34465562

Buyer24323047

total45647184

STOA Success Story Developed in consultation with all stakeholdersApplications Processed (Since Beginning) > 20,000 No.Volume (Approved Energy) (Since Beginning)> 90BUsApplications Approved > 95 %Refusal/Non-consent by SLDCs > 3 - 4 %Refusal due to system constraints < 0.5 %Curtailment in real time < 1%Near Dispute free implementationLogistics/infrastructure -In-houseRobust Financial Settlement SystemConfidence Building & Dissemination of knowledge

POWERGRID - NRLDC

STOA Encouraging factsTransactions between extreme corners of the countryKerala to PunjabNagaland, Arunachal, Tripura to Maharashtra, UP Most of the States participated.Market Players Simultaneous Buy & Sell on same dayDelhi Buy in Peak, sell in off-peakTransactions from few MW to hundreds of MW 2 MW (JP Cement Rewa,MP JP Cement, Ayodhya,UP) 800 MW (BSES Rajdhani to UP)Surplus during Weekend/Holidays utilisedBudge-Budge of CESC : National Award for PLF of 99.6% in 2005-06Improved performance of Generating Plants Diversity being gainfully utilized

POWERGRID - NRLDC

Typical Reasons for RefusalBalancing Mechanism Consent by STU/SLDC TelemetryMeteringSchedulingFunctional Autonomy of SLDC PPAs

POWERGRID - NRLDC

TSO Vs ISO

HistoryStates had bundled/integrated Generation, Transmission & Distribution entity

Inter state lines conceptualized and started implementation in 60s

In 1964, GoI setup the REBs as Deemed Independent System Operator under CEA to initiate Regional Grid operations and State level operators for State Transmission/ Distribution networks

Migration from Deemed ISO to TSO in India

Inter-State integration was attempted from mid 70s along with Central Generating Companies with ultimate aim to conceptualize Regional Grids.By mid 80s, need for inter regional connections was feltIn 1989, Cabinet approved POWERGRIDs formation with following objectives -Massive Transmission Expansion and establishment of Inter-regional linesOperation of existing RLDCs Correct the lacunae of interstate lines & missing linksEnsuring Grid DisciplineEstablish Unified Load Despatch Centres and dedicated communication Urgently remove Institutional weaknesses to deal with the problems in Regional Grid Operation

RLDCs were thus gradually transferred to POWERGRID from 1994 to 1996. For effective grid operation, POWERGRID has done the following

Modernization of RLDCs Preparation of Grid Code in the capacity of CTUIntroduced Availability Based Tariff (ABT)Creating a strong & vibrant National GridRing-fencing of the activities of Grid Operation from that of TransmissionManning of RLDCs suitably addressed through massive reduction in non-executive and addition in executive category with suitable training

These efforts of POWERGRID have resulted intoEnhanced grid stability with improved frequency and voltage profileEnhanced inter regional exchangesSubstantial reduction in grid disturbancesFacilitating Inter-state Open AccessEconomic benefitsMigration From ISO to TSO

TSO model in India a few factsFormulation of evolving Market rules & order for implementation of Indian Electricity Grid Code by CERC TSO only an enabler and immune to dispatchOverall planning by CEATSO only the coordinator

CERC oversees implementation of Open Access in inter-State TransmissionTSO only an enablerNo operational / commercial disputes between the constituents and the Grid OperatorMarket rules, Grid codes, Open Access etc. already in place The system has adequate in-built checks and balances by designDecentralized dispatch system operation System Operation and Transmission activities ring fenced

Close interaction between system operator and network owner head and body is togetherfaster decision making, reduces response timeTSO has no commercial interest in Generation, Distribution & Trading (as per the Electricity Act 2003 itself)Information sharing of Transparent and two way communicationReal-time power flowsLong-term & Short-term capacity reservations for non-discriminatory open access

RLDC backed by large organization which provides Buffer for manpowerAvenues for lateral movementJob enrichment and career growthTSO model in India a few facts

Ensure digital quality power through 100% Grid availabilityPlan and expand Grid with adequate redundancy

Ensure effective communication, control and command

Ensure physical Security of the establishments, particularly of the Load Dispatch Centres

Managing complex power system with growing size of the grid because of national & international connections, open access and market developmentPower System Challenges

Continuous expansion of the Grid through system studies and real time feed back from the system operator TSO alone can effectively do it In case of split of TSO to ISO and Transmission utility, the effective co-ordination may be difficult as witnessed in India in the past and being witnessed internationally, particularly USAAdoption of Scenario-and-contingency (S&C) planning tools, in addition to building adequate redundancyAdequate security mechanism, both physical & technical against terrorismContinuous upgradation and modernisation of RLDCs, which calls for Adequate Fund AvailabilityInstitutional Strength to train & redeploy personnel with adequate room for career growth

Challenges can be addressed through

TSO-ISO International experienceModels

TSOISOFranceU.KSwedenGermanyNetherlandItalyChinaSouth AfricaUSA *CanadaBrazil

* Moving towards TSO through RTO

In USA, need felt for shifting to TSO model as ISO model did not help in development of new transmission lines & modernization of LD&C facilitiesTERNA, new Italian TSO made in 2005 by integration of TERNA (Trans. Developer) & GRTN(ISO)Norway choose TSO model for development of the grid and its management for socio-economic efficient transmission networkIn France, both Transmission and System Operation functions delegated to RTEAll European countries follow TSO modelThe World Bank report indicated that TSO model is critical for success of any power sectorIn WEC seminar, it emerged that TSO permits much stronger financial incentives around system security TSO-ISO International Experience

Comparison of TSO vs. ISO

TSOISOHarmonisation of transmission asssets development and its operation & managementsOperator and Grid owners are tied up only through agreements slow decision making and increase response timeTransparent and Simpler information flowCommunication may not be effective between two(2) organisationsGrid management and asset ownership with single entity make better accountability Grid operators and asset owners may blame each other

Decide and implement the right efforts in a socio-economic perspective through integrated instruments by system operator & grid ownerLacks instrument to secure socio-economic development and operation of transmission grid

Comparison of TSO vs. ISO

TSOISORLDC backed up by large organisation which provides - availability of adequate funds, buffer for manpower, Career growth, avenues for lateral movementSmall organisation, less opportunity for career growth, fund mobilisation difficultBacked up by experienced manpower in all fields of transmission helps in efficient grid managementNo backup of experienced manpower in transmission systemNeutrality can be addressed by suitable mechanism, i.e ring fencing, banning TSO from generation & trading and availability of regulatory mechanismNeutral

The World Bank report on Transmission System Operators Lesson From the Frontlines , June, 2002

Quote

Among the new power institutions, Transmission System Operators (TSOs) are critical to the success of any power sector in which competition is sought. A TSO must be the operator of both the high voltage transmission grid and generation dispatch centre

Unquote

In the World Energy Council seminar on Large Power System failure held in London on 02.10.2006, it emerged that

The European approach of establishing TSOs rather than ISOs permits much stronger financial incentives to be put in place around system security.

TSO approach deliver more accountability

Indian power sector maturing & developingNeutrality of TSO in India ensured by designImproved grid management in India thru TSOInstills accountability in SO regarding investment recommendationsArchitectural change may confuse new playersCareer growth & job enrichment possible in TSO to retain the talent poolTransmission Utility only the path-provider & neutral and in no way can influence system operationIt has socio-political impacts and fall outsCannot afford failuresTSO model is more successful internationallyTSO is best suited in Indian contextConclusion

Discussion

ISO - American ModelGGGDDDTTGDGDGDTSOSORTOUSA had adopted this model; As many vertically integrated private players needed to be monitored by an independent entity to oversee Grid Management.

Need felt for shifting to TSO Model as, Co-operative approach did not help in adding new transmission lines & modernizing load dispatch centres Thus, they are now moving to TSO through RTO.

TSO TERNA, ItalyTERNA new Italian TSO - owns & operate more than 93% of Italian Transmission Network, made in 2005 by integration of TERNA & GRTN (ISO)Need for this integration To harmonise transmission asssets creation and its operation & managementsTo ensure transparent and competitive electricity marketTo improve asset management

*- / BDI

TSO vis--vis ISO model Italian experience and way ahead

+

GRTN(asset management)

Dispatching andGrid development planning

TERNA(asset ownership)

TERNARete Elettrica Nazionale

Maintenance and Grid development implementation

Merger

Dispatching & securityGrid operation & maintenancePlanning and implementation of grid development Power sector statistics

The new TSO since November, 1st 2005

Norway Statnett as TSO

Necessity to choose TSO model in Norway

ISO lacks necessary instruments to make grid capacity adaptationsGrid owner without system operator responsibility will often lack incitements to choose instruments that the ISO finds socio-economic efficientTSO model is necessary to carry out the right development of the grid, responding to long-term changes in production and consumption patterns

*

TSO-model gives sufficient instruments

Evaluating instruments

Decide and implement the right efforts in a fast and effective way

System services

Grid utilisation

New grid capacity

Transmission pricing

Instruments available for an ISO

Instruments available for a TSO

Balancing system reliability requirements and the market need for transmission capacity

Use of instruments for a TSO

France T + SOGDEdFRTEThis model is followed in France, wherein Transmission and System Operation functions have been delegated to RTE. EdF is responsible for the Generation and the Distribution to the extent of 95%

TSO Model (European countries)GGGDDDT + SOGDGDThis model is being followed in UK, Norway, Sweden, Finland, Netherland, Denmark

Germany has four Transmission System Operators across the country (TSO model)

*NRLDC*NRLDCNRLDCNRLDCNRLDC*NRLDC*TALA PROJECT-LARGE CENTRAL GRID ARUNACHAL TO GUJARAT ON SAME FREQNRLDC*NRLDC*NRLDC*NRLDC*NRLDC*NRLDC*NRLDCNRLDCNRLDC*NRLDC*NRLDCNRLDCNRLDC*NRLDC*A significant quantum of need is traded through long term bilateral contracts.But the availability of tools to optimize demand helps the operator.

NRLDCNRLDCNRLDCNRLDCNRLDCNRLDCNRLDC*NRLDC*NRLDCNRLDCNRLDCNRLDCNRLDCNRLDCNRLDCNRLDCNRLDC*NRLDC*NRLDCNRLDCNRLDC*NRLDCNRLDCNRLDCNRLDCNRLDC*NRLDC*NRLDC*NRLDC*NRLDCNRLDC*NRLDC*NRLDC*Enriching experience . Still a long way to go Max transfer 2780 on a day 11-Aug-06 . NRLDC*NRLDC*NRLDC*NRLDC*NRLDC*NRLDC*NRLDC*NRLDCNRLDC*NRLDC*NRLDC