Open Access Open Access in ISTS CERC

Open Access

Open Access in ISTS: CERC OA Regulations 2008 • Collective transactions : Both Buyers and Sellers of 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 for Advance Reservation, e. Bidding without Price Cap • Exit Option provided with payment of up to 2 days open access charges.

Open Access in ISTS CERC OA Regulations 2008 • Products – Short term Access - Advance - First Come First Serve - Day ahead - Contingency

Time lines for various Categories of Applications Sl. No. Type of Application Deadline for applying OA required for * Deadline for issue of approval by Nodal RLDC 10 days prior to close of Month-1 2 3 4 First Come First Serve Day Ahead Contingency 25 th of M 1 5 days close of Month-1 M 3 Last day of M 1 Last day of Month-1 Advance Application 1 M 2 M 4 5 th of M 2 FCFS for the same month M 1 3 days before start of transaction M 2 28 th of M 1 D 4 On D 3 After receipt of Power Exchange schedules for D-4 D 4 Within 6 blocks before start of OA FCFS 4 days before commencement Day Ahead (Day-1 or 1500 hrs. of Day-3) After 15 hrs on Day-3 or 1. 5 hours before start of OA * M-1 : Month-1 (Current month), M-2 - Next month and so on, D-1 Day-1 and so on

Time Line for Advance, FCFS, DA and Contingency Applications D-3 D-2 D-1 D 0 1500 hrs 1. 5 hrs Deadline for submission of DA Applications for transactions on D 0 Deadline for submission of Contingency Applications for transactions during D 0 M 1 M 2 20 Last Day for submission of Applications for transactions in M 2, M 3, M 4 25 M 3 M 4 5 Processing time for RLDCs

Processing of Advance Applications for next 3 months 10/5/1 day (17. 30 hrs) prior in a month for 2 nd/3 rd/4 th month Dead Line for Receipt of Application Request for Consent from other RLDCs Next Day to due date(12. 00 hrs) SAME DAY 20. 00 HRS Issue of Consent by RLDC WITHIN 5 DAYS No Approval Next day 12. 00 hrs Yes Check for any Tr. Congestion ? No Still Tr. Congestion ? Request Applicant for a revised Tr. Cap. Next day 12. 00 hrs Next day Revised MW/Duration 11. 00 hrs by Applicant Yes 4 th day after due date WITHIN 5 DAYS E-bidding Approval 3 working days after issue. Commence. Payment of ment STOA ch. of Tx.

Processing of FCFS Applications for next month Dead Line for Receipt of Application 5/4 day (17. 30 hrs) prior in a month for Request for Consent from other RLDCs Next Day to due date(12. 00 hrs) Issue of Consent by RLDC Approve Applcations received in a day on pro-rata No SAME DAY 20. 00 HRS Next day 12. 00 hrs Yes Check margin is there ? WITHIN 5 DAYS No Yes Any margin left ? 4 th day after due date 3 working days after issue. Commence. Approve Applications Payment of ment Received in next day on pro-rata STOA ch. of Tx.

REVISON OF SCHEDULE • Only in case of “Advance Scheduling” or “First-Cum-First Served basis” • minimum five (2) days notice (5 days in 2008 Regn) • Transmission Charges and Operating Charges for 2 days (5 days in 2008 Regn) • Margin Available – could be utilized for scheduling of other Open Access Transactions

CURTAILMENT IN CASE OF TRANSMISSION CONSTRAINTS • Allocation/Reallocation of ISGS power • Transmission constraint or to maintain grid security • curtailed in the manner, which in the opinion of RLDC, would relieve transmission constraints/ enhance grid security • Open Access Bilateral Transactions would generally be curtailed first followed by the Collective Transactions • Rerouting allowed without curtailment • refund of Transmission Charges for unused capacity

COMMERCIAL CONDITIONS • All Payment related to Open Access ST Charges – by Applicant to the Nodal RLDC – within three working days from the date of acceptance • Energy charges to be settled among the parties • Losses adjusted in kind • Application Fees (as per Para 7 of Regulation) – non-refundable fee of Rupees five thousand (Rs. 5000/-) only • Transmission charges (Para 16 of Regulation) – Intra-region (Rs. 80/MWh) – Adjacent Region (Rs. 160/MWh) – Wheeling (Rs. 240/MWh) – STU charges – as specified by respective SERCs or Rs. 80/MWh • Operating charges (as per Para 17 of Regulation) – Rs. 2000/- per day each RLDCs/SLDCs involved

DISBURSAL OF PAYMENT • Disburse the Open Access Charges – 10 th day of the next month • Transmission Charges and Operating Charges – for State System – Concerned STUs/SLDCs • Refund due to curtailment – 15 th day of the next month • Reconcile the Open Access Charges

STOA – SUCCESS STORY • Developed in consultation with all stakeholders • Applications Processed (Since Beginning) > 60, 000 No. • Volume (Approved Energy) (Since Beginning) > 190 BUs • Applications Approved > 95 % – Refusal/Non-consent by SLDCs > 3 - 4 % – Refusal due to system constraints < 0. 5 %

STOA – SUCCESS STORY • Robust Financial Settlement System • Near Dispute free implementation • Logistics/infrastructure -In-house • Confidence Building & Dissemination of knowledge

ST charges under OA • w. e. f 01. 04. 11, ST charges as per Point of Connection charge • Both seller and buyer to bear losses in kind as per the applicable Zonal losses