Open Access Regulations
The State Electricity Regulatory Commissions (SERCs) and Central Electricity Regulatory Commission (CERC) issue regulations for promoting open access to intra-state and inter-state transmission system in the country. The regulations outline the application process for open access and scheduling different types of open access transactions in the power system and determine various charges associated with open access. The CERC has issued Open Access in Inter-State transmission system regulations dated 25th January 2008. This regulation is applicable to the applications made for grant of open access for energy transfer schedules commencing on or after 1st April 2008. The primary purpose of these regulations is to utilize the surplus capacity available on the inter-state transmission system.
Open Access Regulations, 2008
[clause 1.2]
1. inherent design margins
2. margins available due to variation in power flows
3. Margins available due to in-built spare transmission capacity created to cater to future load growth
[clause 3]
[clause 5]
[clause 10]
2. The applicant shall continue to be liable to pay transmission charges as per the schedule originally approved, if the period of revision or cancellation is up to 5 days
3. If the period of revision or cancellation exceeds 5 days, transmission charges shall be payable in accordance with the revised schedule
[clause 14]
2. In case of inter-regional bilateral transactions, approved schedule may be cancelled by the RLDC, if the Central Government allocates power from a central generating station in one region to a person in the other region
3. In case of curtailment of the approved schedule by the RLDC, transmission charges shall be payable pro-rata
[clause 15]
b. Bilateral, between adjacent regions- Rs.60/MWh
c. Bilateral, wheeling through one or more intervening regions- Rs.90/MWh
d. In case of the collective transaction, for use of the ISTS system, transmission charges at the rate of Rs.30/MWh for each point of injection and for each point
of drawal shall be payable
e. The intra-State entities shall additionally pay transmission charges for use of the State network as determined by the respective State Commission
f. If State Commission has not determined the transmission charges, the charges for use of respective State network shall be payable for the energy approved at the rate of Rs.30/MWh
[clause 16]
2. UI rate for intra-State entity shall be 105% (for over-drawals or under generation) and 95% (for under-drawals or over generation) of UI rate at the periphery of regional entity
[clause 20]
[clause 21]
2. The energy losses shall be accounted for by providing a differential between schedules at the points of supply, inter-utility transfer and drawal of electricity
[clause 23]
b. dated 11/09/2013
c. dated 12/05/2015
d. dated 22/06/2016
e. dated 02/01/2019
f. dated 12/12/2019
1. Scope of the regulation are substituted by:
1.1. The long-term-customer and the medium-term customer shall have priority over the short-term customer for use of the inter-State transmission system.
1.2. The short-term customer shall be eligible for short-term open access over the surplus
capacity available on the inter-State transmission system after use by the long-term
customer and the medium-term customer.
1. Substitution in regulation 14
1.1 The short-term open access schedules accepted by the nodal agency in advance or on first-come-first-served basis may be cancelled or revised downwards on an application by the short-term customer.
1.2. The person seeking cancellation or downward revision of short-term open access schedule shall pay the transmission charges for the first two (2) days of the period for which the cancellation or downward revision of schedule has been sought.
1.3.In case of cancellation, operating charges shall be payable for two (2) days or the period of cancellation in days, whichever is less.
1. In clause 1, Whenever, the Regional Load Despatch Centre curtail power flow on any
transmission corridor by cancelling or re-scheduling any transaction, it should follow the provisions of the Grid Code, while cancellation or curtailment of any transaction, among short-term, medium-term and long-term transactions
1.1. Short-term transactions shall be cancelled or curtailed first, followed by medium -term and thereafter long term–transactions. Further in cancelling or curtailing any short-term transaction, bilateral transactions shall be cancelled or curtailed first followed by collective transactions
b. Bilateral, between adjacent regions- Rs.160/MWh
c. Bilateral, wheeling through one or more intervening regions- Rs.240/MWh
d. In case of the collective transaction, for use of the ISTS system, transmission charges at the rate of Rs.100/MWh for each point of injection and for each point of drawal shall be payable
e. The intra-State entities shall additionally pay transmission charges for use of the State network as determined by the respective State Commission
f. If State Commission has not determined the transmission charges, the charges for use of respective State network shall be payable for the energy approved at the rate of Rs.80/MWh
1. In Clause 3,
1.1. Any person seeking downward revision of short term open access schedule shall pay the operating charges specified under Regulation 17 of these regulations corresponding to the number of days for which power has been scheduled
1.2 In case of cancellation, operating charges shall be payable in addition for two (2) days or the period of cancellation in days whichever is less.”
1. Substitution in regulation 16
1.1 In case of bilateral and collective transactions, transmission charges shall be payable in accordance with the provisions of CERC (Sharing of State Transmission Charges and Losses) Regulations, 2010 as amended from time to time.
1.2. The intra-State entities shall additionally pay transmission charges for use of the State network as determined by the respective State Commission
1.3. If State Commission has not determined the transmission charges, the charges for use of respective State network shall be payable for the energy approved at the rate of Rs.80/MWh
1. In clause 1, Energy losses in the transmission system as may be determined in accordance with CERC (Sharing of Inter- tateTransmission Charges and Losses) Regulations, 2010 as amended from time to time.
2. In clause 2, The energy losses shall be accounted for by providing a differential between schedules at the points of supply and drawal of electricity.
1. Regulation 3A, National Open Access Registry (NOAR).
1.1. NOAR shall be a common electronic platform for short term open access.
1.2. NOAR has following functionaries:
a) It automate the administration of the short term open access in interstate transmission system.
b) It provides single window electronic platform for short term customers, trading licensees, Power Exchanges, NLDC, RLDCs, SLDCs and Regional Power Committees.
c)It act as a repository of information related to short term open access.
d)It act as interface for processing short-term inter-state open accesstransactions, validation of standing clearance and processing of term-ahead and day-ahead transactions for power exchange(s), payment gateway for making payments related to short term open access transactions and generation of periodic reports for market monitoring and surveillance related activities.
2. Regulation 5A. The processing of the short term open access applications for bilateral transactions and collective transactions shall be carried out through the NOAR.
[clause 2.2 (ma)]
1. New clause 13 (B) is added- Procedure for scheduling of transaction in Real-time market(RTM)
1.1. All the entities participating in the real-time market for a specified duration may place their bids and offers on the Power Exchanges for purchase and sale of power.
1.2. The window for trade in real-time market for day (T) shall open from 22.45hrs to 23.00hrs of (T-1) for the delivery of power for the first two time-blocks of 1st hour of day (T) i.e., 00.00 hrs to 00.30 hrs, and will be repeated every half an hour thereafter.
1.3. The Nodal agency in accordance with the detailed procedure shall announce the final schedule by 23.45 hrs of (T-1) and communicate to the RLDCs to prepare the schedule for dispatch.