Public consultation pursuant to Art. 12 of Commission Regulation (EU) 1222/2015 (hereinafter CACM) on amendments to the “Methodology for the price coupling algorithm, the continuous trading matching algorithm and the intraday auction algorithm also incorporating a common set of requirements in accordance with Article 37(5) of the Commission Regulation (EU) 2015/1222 of 24 July 2015 establishing a guideline on capacity allocation and congestion management” (hereinafter Algorithm Methodology) for timing adjustments to the Intraday Auctions due to the introduction of the Flow-based implementation

13 May 2026

Consultation Overview

The Algorithm Methodology provides specific provisions for the development and maintenance of a price coupling algorithm and of a continuous trading matching algorithm for the single day-ahead coupling (SDAC) and for the single intraday coupling (SIDC), in accordance with Chapters 4 to 6 of the CACM Regulation. The Algorithm methodology also includes the TSOs’ and NEMOs’ common sets of requirements for the development of the algorithm pursuant to Article 37(1) of the CACM Regulation. The Algorithm methodology was amended in 2024 by Decision No 11/2024 of the Agency for the Cooperation of Energy Regulators (ACER). In compliance with paragraph (3) of Article 55 of CACM, providing the high-level requirements for the implementation of the pricing of intraday capacity and the development of the relevant applicable methodologies, ACER, in coordination with National Regulatory Authorities (NRAs) and following a relevant proposal of all TSOs on the Intraday Cross-Zonal Capacity Pricing methodology (IDCZCP) by all TSOs, has approved (Decision 01/2019 of 24th of January 2019 on Establishing a Single Methodology for Pricing Intraday Cross-Zonal Capacity) the implementation of three pan-European intraday auctions (IDAs) to price cross-zonal capacity, complementing the existing continuous trading system in the Single Intraday Coupling (SIDC).

Intraday Auctions were officially implemented across Europe on 13th June 2024, forming a key part of the SIDC market mechanism, under the NTC allocation constraints option. Considering the existing implementation of flow-based allocation in the Core and Nordic Regions for Single Day-Ahead Coupling (SDAC), the NEMOs and the TSOs are implementing flow-based allocation method, at the same Regions as for SDAC, also for the IDAs, and are now proposing a minimum set of adjustments in the timing of the IDAs process as currently included in the Algorithm Methodology (AM).

Why We Are Consulting

Any amendment of CACM Terms, Conditions or Methodologies needs to be submitted for public consultation for at least one month (pursuant to art 12 of CACM) to consider stakeholder´s views on this reviewed proposal.

Feedback

NEMOs welcome the feedback of the stakeholders on this public consultation. Feedback on the aforementioned proposals under Public Consultation could be sent to the following contact details.