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OPEN ACCESS EXPERIENCES and WAY AHEAD

OPEN ACCESS EXPERIENCES and WAY AHEAD. WORKSHOP ON GRID SECURITY AND MANAGEMENT 28 th April 2008. V K Agrawal, General Manager SRLDC. Open Access in Transmission: Why and What ? Journey … Success Story… Issues… Way Ahead…. Thank You. REGIONAL GRIDS. INSTALLED CAPACITY

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OPEN ACCESS EXPERIENCES and WAY AHEAD

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  1. OPEN ACCESS EXPERIENCES andWAY AHEAD WORKSHOP ON GRID SECURITY AND MANAGEMENT28th April 2008 V K Agrawal, General Manager SRLDC

  2. Open Access in Transmission: Why and What ? Journey … Success Story… Issues… Way Ahead…

  3. Thank You

  4. REGIONAL GRIDS INSTALLED CAPACITY NORTHERN :- 37,486 MW EASTERN :- 19,416 MW SOUTHERN :- 39,175 MW WESTERN :- 42,420 MW NORTH-EASTERN :- 2,506 MW TOTAL 141,003 MW NORTHERN REGION NORTH-EASTERN REGION EASTERN REGION WESTERNREGION SOUTHERN REGION

  5. Hydro Coal Energy Resource Map

  6. Resources are far away from Load centers. Necessitates Long Transmission links for evacuation Spatial Distribution Of Load HYDRO RESOURCES DELHI KOLKATTA Source: Powerline (Siemens Ad), Oct-2006 MUMBAI COAL BELT BANGALORE CHENNAI AREAS SHOWN ARE APPROXIMATE AND INDICATIVE

  7. Diversity details of Regional Grids in India

  8. Necessity for strong transmission backbone … A strong transmission network backbone is essential in order to transfer the power across the length and breadth of the country : - Due to high load growth and low generation avenues in Northern and Western Regions - Due to low load and high generation in Eastern and North Eastern regions - Due to high load growth and monsoon dependent generation availability in Southern Region

  9. Milestones 1989 Unbundling of CS transmission from generation - (Formation of National Power Transmission Corporation .. now POWERGRID) 1991 Generation opened to Private Sector 1995 Unbundling process started in States - State unbundled into Gencos, Transco & Discom 1998 Electricity (Amendment) Act 1998 1998 Electricity Regulatory Commission Act passed 2003 Electricity Act 2003 enacted in June 2003 2004 CERC Order and Regulations on OPEN ACCESS

  10. Open Access: Definition As per Electricity Act, 2003 Section 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;”

  11. A More general Definition of “Open Access” “Enabling of non-discriminatory sale/ purchase of electric power/energy between two parties utilizing the system of an in- between (third party), and not blocking it on unreasonable grounds”

  12. Scope/Applicability… 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; (c ) Margins available due to in-built spare transmission capacity created to cater to future load growth or generation addition: As per CERC Regulations 2008 Clause 3

  13. Agencies involved in Short-Term Open Access Transaction RLDC (s) SLDC (s) CTU STU (s) Buyer Seller Trader

  14. OPEN ACCESS: JOURNEY ...

  15. Open Access in ISTS: Journey… CERC Regulations on Open Access in Inter State Transmission implemented w.e.f. 6-May-2004. CERC amended the above Regulations and the amended Regulations implemented w.e.f 01-04-2005. CERC on 25-01-2008 amended the Regulations and the new Regulations are implemented w.e.f 01-04-2008.

  16. Open Access in ISTS: Journey… Products – Long term Access Short term Access - Advance - First Come First Serve - Day ahead - Same Day transactions CERC OA Regulations 2004 and Amendment, 2005

  17. Open Access in ISTS: Journey… CERC OA Regulations 2004 and Amendment, 2005 • Long Term : Twenty five years and above - Life of the Assets about 25 years - Existing beneficiaries of a regional transmission system owned or operated by CTU- deemed long term customers - New Long Term Open Access customers: Require BPTA for inter-State transmission • Short Term : Which is not Long Term - Essentially a Non firm service - The service may be curtailed if system security demands.

  18. Effective 01.04.2008 Regulations cover only Short-term Open Access Transactions categorized as - Bilateral - Collective (through PX) Earlier Products of Short-Term retained under Bilateral Transactions Nodal Agency - Bilateral : RLDCs - Collective : NLDC Open Access in ISTS: Journey… CERC OA Regulations 2008

  19. Open Access in ISTS: Journey… Products – Short term Access - Advance - First Come First Serve - Day ahead - Contingency CERC OA Regulations 2008 Long term Access Provisions relating to Long Term as per the Open Access Regulations, 2004 to continue, till CERC further notifies.

  20. Both Buyers and Sellers of Collective transactions to bear transmission charges and absorb transmission losses Inter-Regional links -No Separate treatment. Emphasis on “Scheduling” rather than “Reservation” SLDC consent mandated along with application In case of Congestion – e-Bidding without Price Cap Exit Option provided with payment of up to 5 days open access charges. Moving towards empowerment of SLDCs Open Access in ISTS: Journey… CERC OA Regulations 2008

  21. Comparison of CERC Regulations on Short-Term Open Access (Regulation 2004, Amendment 2005 and Regulations 2008)

  22. 649.86 516.03 967.58 1795.11 233.32 919.71 447.73 270.49 313.93 433.09 434.42 339.98 460.41 359.68 859.05 1462.44 2433.39 881.49 1128.39 700.91 614.15 STOA RATES 2004 AND 2005 AND 2008 NORTHERN REGION ER-NR NORTH-EASTERN REGION Transmission Charges: Bilateral: Rs.30/MWh – intra- regional Rs.60/MWh – Between adjacent regions Rs90/MWh – Wheeling through one or more region Collective Transactions (Px): -Rs. 30/MWh for each point of injection and drawal WR-NR WESTERNREGION NER-ER ER-WR EASTERN REGION SR-ER SR-WR SOUTHERN REGION STOA CASE

  23. Comparison of CERC Regulations on Short-Term Open Access (Regulation 2004, Amendment 2005 and Regulations 2008)

  24. STOA CASE APTRANSCO to MPSEB 100 MW for One day from 0000 to 0600 hrs.

  25. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS)100MW AT INJECTION POINT CUSTOMER:NVVNL TRADER:NVVNL INJECTING UTILITYAPTRANSCO DRAWEE UTILITY MPSEB • INTERVENING REGIONAL LINK • SR-WR CAPACITY APPROVED100 MW DAILY PERIOD0000-0600HRS

  26. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS)100MW AT INJECTION POINT EXPORT AT AP 100 MW LOSSES IN SR3.12% AT SR PERIPHERY96.9 MW CTU LOSSES IN WR4% MP RECIEVES93.0 MW TOTAL LOSSES FOR TRANSACTION7.0 MW

  27. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS)100MW AT INJECTION POINT Payments as per Regulation 2004 of CERC APPLICATION PROCESSING FEE Rs 5000 PER TRANSACTION • SCHEDULING CHARGES PER DAY • Rs 3000 FOR SRLDC • Rs 3000 FOR WRLDC • TRANSMISSION CHARGES PER MWPER DAY • Rs 700.91 FOR CTU-SR • Rs 881.49 FOR SR-WR LINK • Rs 339.98 FOR CTU-WR TOTAL TRANSMISSION CHARGEPER UNIT34.53Ps/.

  28. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS)100MW AT INJECTION POINT Payments as per Regulation 2004 Amendment 2005) of CERC APPLICATION PROCESSING FEE Rs 5000 PER TRANSACTION • SCHEDULING CHARGES PER DAY • Rs 3000 FOR SRLDC • Rs 3000 FOR WRLDC • TRANSMISSION CHARGES PER MWPER DAY • Rs 700.91 FOR CTU-SR • Rs 881.49 FOR SR-WR LINK • Rs 339.98 FOR CTU-WR TOTAL TRANSMISSION CHARGEPER UNIT13.52Ps/.

  29. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0600 HRS)100MW AT INJECTION POINT Payments as per Regulation 2008 of CERC APPLICATION PROCESSING FEE Rs 5000 PER TRANSACTION • SCHEDULING CHARGES PER DAY • Rs 2000 FOR SRLDC • Rs 2000 FOR WRLDC • TRANSMISSION CHARGES • Rs 60 /MWH FOR WHEELING TOTAL TRANSMISSION CHARGEPER UNIT7.83Ps/.

  30. Comparison of CERC Regulations on Short-Term Open Access (Regulation 2004, Amendment 2005 and Regulations 2008)

  31. OPEN ACCESS: SUCCESS STORY…

  32. INTER REGIONAL CAPACITIES 30,500 MW 37,486 MW 2,506MW 19,416 MW 16,000 42,420 MW 39,175 MW 32

  33. NORTHERN REGION NORTH-EASTERN REGION ER WESTERNREGION SOUTHERN REGION ALL INDIA ATC (Figure shown are for April-2008) ATC = 1375 MW ATC = 1395 MW ATC = 900 MW ATC = 900 MW EASTERN REGION ATC = 474 MW ATC =226 MW ATC = 950 MW ATC = 750 MW ATC = 800 MW ATC = 920 MW What Is ATC

  34. All India basis

  35. All India basis

  36. All India basis

  37. Open Access – Success Story Applications Processed (Since Beginning) > 20,000 No. Volume (Approved Energy) (Since Beginning) > 90BUs Applications Approved > 95 % Refusal/Non-consent by SLDCs > 3 - 4% Refusal due to system constraints < 0.5 %

  38. Open Access – Success Story Transactions between extreme corners of the country RGCCPP ( Kayamkulam) to PSEB Arunachal Pradesh(NER) to PSEB TNEB to J&K Large number of Captive Generating plants used STOA and helped in enhancing the power availability in grid. Ugar Sugars (KAR) - JAIPUR (RAJASTHAN) Godavari Sugars (KAR) - MSEDCL NCS Sugar(ANDHARA) – GUVNL Indorama ( MAH) – APPCC ( ANDHRA) MORE DETAILS

  39. Open Access – Success Story Even costly power was harnessed to meet the high demand RGCCPP ( Kayamkulam) (NAPTHA) to PSEB BSES(KERALA) (DIESEL) to NDMC (DELHI) Diversity being gainfully utilised by Market players under STOA Delhi/TNEB Export in night ; Import during evening peak ANDHRA Export during evening peak ; Import in night Generators PLF has also increased. Kayamkulam GPS - (From 57 % in 2006-07 to 82 % in 2007-08- 82%)

  40. OPEN ACCESS: ISSUES…

  41. Open Access - Issues Skewed load – generation pattern Constrained Transmission Network under certain conditions Consents by STU/SLDC for injection of power by embedded customers Telemetry Metering Scheduling PPAs

  42. Open Access - Issues UI Settlement of Intra state entities Before the Implementation of Open Access Regulations 2008, for deviations different STU/SLDCs are charging differently for embedded customers. At times even the clearance was being withheld for want of approval philosophy. In the New Open Access Regulations the issues are being addressed

  43. OPEN ACCESS: WAY AHEAD…

  44. Open Access- Way Ahead… Empowerment of SLDCs Intra State ABT Power Exchanges (Pxs) Easy and workable solutions to tap micro/mini Non conventional Energy Resources

  45. Open Access- Way Ahead… Empowerment of SLDCs - Greater role assigned to State Load Despatch Centre (SLDC) to bring them at par with the Regional Load Despatch Centre (RLDC). - unless specified otherwise by the concerned State Commission, the UI rate for intra-State entity shall be 105% (for over-drawals/under generation) and 95% (for under-drawals / over generation) of the UI Rate at the periphery of regional entity. This has been done to facilitate dispute free energy accounting and settlement of deviations for intra-state entities located in the State where intra-state ABT has not yet been implemented. - Empowerment of SLDCs has been made technically and financially.

  46. WAY AHEAD Traditional bilateral transactions as well as collective transactions discovered in a Power Exchange. Scheduling and open access for collective transactions discovered in a power exchange through anonymous simultaneous competitive bidding by buyers and sellers, presently on day-ahead basis. Operationlisation of power exchanges. CTU has submitted Procedure for collective transactions to the Hon’ble Commission.

  47. WAY AHEAD IMPLEMENTATION INTRA STATE ABT IN ALL STATES.

  48. Back

  49. TYPICALSTOA CASE KAYAMKULAM RGCCPP, NTPC to PSEB 150 MW for 31 days on Round the Clock basis

  50. SR STOA OF KSEB(RGCCPP) - PSEB 0000 HRS – 2400 HRS150MW AT RGCCPP EXBUS POINT for 31 days PSEB NR CUSTOMER: NVVNL TRADER: NVVNL HVDC BACK TO BACK AT VINDHYACHAL IN WR INJECTING UTILITY RGCCPP,KSEB DRAWEE UTILITY PSEB WR INTERVENING REGION WR HVDC BACK TO BACK AT BHADRWATHI IN WR • INTERVENING REGIONAL LINK • SR-WR • WR-NR INTERVENING STATE TRANSMISSION UTILITYKSEB KERALA CAPACITY APPROVED 150 MW DAILY PERIOD 0000-2400 HRS KAYAMKULAM RGCCPP NTPC)

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