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Communication note
26 May 2021: Starting with 17 June 2021 new operational timings to be applied for daily market coupling process
Over the years, the number of coupled countries and consequently the number of parties and systems involved in the Single Day-Ahead Coupling (SDAC) has increased enormously. As a result, the market coupling process and especially, the calculation process, has become more complex.
To secure that there is sufficient time for running the daily market coupling process, the National Regulatory Authorities (NRAs) have approved the joint proposal of Nominated Electricity Market Operators (NEMOs) and Transmission System Operators (TSOs) to increase the maximum duration of the algorithm calculation from 12 to 17 minutes and to change the corresponding deadlines enabling NEMOs and TSOs to find a solution for avoiding decoupling.
For market parties this will result in the following changes in the daily operational timings:
- Preliminary Results publication time: 12:45 CET (instead of 12:42 CET)
- Partial-Decoupling due to missing order books deadline: 12:45 CET (instead of 12:40 CET). Reopening of order books for coupled and decoupled areas after a Partial-Decoupling is announced will be extended from 10 to 15 minutes.
- Full-Decoupling deadline: 14:00 CET (instead of 13:50 CET)
- Publication of Shadow Allocation Results: no later than 14:00 CET (instead no later than 13:50 CET). This deadline is only relevant where Shadow Auctions are the Fallback solution in place. The corresponding rules have been updated as published by JAO here: jao.eu.
The implementation of the new operational timings will take place on 17 June for the delivery day 18 June 2021 together with the Interim Coupling Project go-live, the latter being subject to confirmation of technical and legal readiness by all parties.
The Communication note ” Starting with 17 June 2021 new operational timings to be applied for daily market coupling process” can also be consulted on the NEMO Committee (www.nemo-committee.eu) and ENTSO-E websites (www.entsoe.eu).
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About OPCOM
OPCOM is the Romanian Electricity and Gas Market Operator. Since 2000, OPCOM has been committed to strengthen a market place where energy and environmental certificates are traded in conditions of transparency and integrity. Today, the trading portfolio offered by OPCOM ranges from electricity products to gas products, as well as green certificates. More than 900 companies are using the products available for trading on short-term electricity, gas and green certificates markets as well as on term markets for electricity, gas and green certificates bilateral contracts. In addition to this role, OPCOM is responsible for settlement of the transactions concluded on short-term energy markets, Balancing Market as well as the Imbalances of the Balancing Responsible Parties. OPCOM also manages the Green Certificates Register. Today, OPCOM is acting as Registered Reporting Mechanism under REMIT managing more than 480 reporting agreements on its electricity and gas markets. OPCOM was designated by the Romanian Energy Regulatory Authority as Nominated Electricity Market Operator (NEMO) in accordance with the Regulation (EU) 2015/1222 for fulfilling tasks related to the coupling of the day-ahead and intraday markets.
OPCOM applies the Quality Management System complying with ISO 9001 - SR EN ISO 9001, respectively the Information Security Management System complying with ISO/IEC 27001 - SR EN ISO/IEC 27001, both systems being certified by Lloyd`s Register LRQA.
For more information about OPCOM, please visit us at www.opcom.ro.
COMMUNICATION NOTE 26.05.2021 
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