6 August 2025. As of 5 August 2025, the second Romanian Nominated Electricity Market Operator (NEMO), BRM, is connected to the Single Intraday Coupling (SIDC) Intraday Auctions (IDAs), becoming part of the operational IDA framework launched across Europe in June 2024. The Regional Integration Project (RIP) partners directly involved are BRM, HUPX, IBEX, OPCOM, ESO, MAVIR, and TEL. Their joint effort ensures seamless operation across borders and bidding zones.
This launch marks the second wave of the IDA rollout that began on 13 June 2024, when all NEMOs and Transmission System Operators (TSOs) introduced the pricing of intraday cross-zonal capacity through three pan-European auctions (15:00 D1, 22:00 D-1, and 10:00 D). By integrating BRM, the SIDC framework reaches another important milestone toward increasing the efficiency of the single European electricity market. Market participants will benefit from a market that becomes more liquid and therefore increasingly competitive, thus maintaining consistency with the single market’s core objectives: efficient, fair, and nondiscriminatory market functioning.
Next Steps
Project parties will closely monitor performance and stability during the initial operating period. Future waves will continue to expand geographic coverage and product scope, further enhancing the European Internal Electricity Market.
About SIDC:
The Single Intraday Coupling (SIDC) is a market mechanism in the intraday timeframe defined in the CACM Regulation based on continuous trading and complemented by three intraday auctions (so called “IDAs”). The SIDC continuous trading solution is based on a common IT system with one Shared Order Book, a Capacity Management Module and a Shipping Module. It allows for orders entered by market participants for continuous matching in one bidding zone to be matched by orders similarly submitted by market participants in any other bidding zone within the European Intraday Coupling as long as transmission capacity is available. The intraday solution supports both explicit allocation (where approved by the respective National Regulatory Authorities) and implicit continuous trading. It is in line with the EU Target model for an integrated intraday market.
In addition, SIDC IDAs allow for the pricing of cross-border capacity in the intraday timeframe. IDAs are implicit auctions where collected orders are matched, and cross-zonal capacity is allocated simultaneously for different bidding zones, determining clearing prices for each bidding zone.
European-wide intraday coupling is a key component for completing the European Internal Energy Market. With the rising share of intermittent generation in the European generation mix, connecting intraday markets through cross-border trading is an increasingly important tool for market parties to keep positions balanced. The purpose of the SIDC is to increase the overall efficiency of intraday trading.
For additional information on SIDC go to:
http://www.nemo-committee.eu/sidc
https://www.nemo-committee.eu/ida
https://www.entsoe.eu/network_codes/cacm/implementation/sidc/