REMIT Compliance
April 15, 2026
ACER Open Letter on the Implications of Regulation (EU) 2026/256 for Data Reporting
Key Changes in REMIT Data Reporting – Deadlines, Formats, New Obligations
Overview of Changes
- Objective of Regulation (EU) 2026/256: It concerns the implementation of Articles 7c(2), 8(1a), 8(2), and 8(6) of Regulation (EU) No 1227/2011, which governs the integrity and transparency of the wholesale energy market and replaces Regulation (EU) No 1348/2014.
- Objective of the ACER Clarification: To familiarize market participants and other affected parties with the new reporting obligations and guide them toward timely implementation.
Key Deadlines and Requirements
- Transition to New Reporting Obligations: Certain provisions take effect on April 29, 2026, while others have later application dates. Market participants must adapt to new reporting formats and deadlines, particularly regarding the transition to reporting on standardized and non-standardized contracts.
- New Requirements for Market Participants: These include reporting obligations for exogenous data, hydrogen reporting, and transaction and lifecycle events. Certain market participants must register by April 29, 2027, to report their data correctly.
- Reporting of Electricity and Gas Storage Transactions: Transactions related to electricity storage and LNG data will be reported in a new format starting in 2027.
- New Reporting Deadlines:
- Standard contracts must be reported within two business days (T+2), and non-standardized contracts within ten business days (T+10).
- Additional requirements for exposure reports and lifecycle events are also included.
- Transitional Periods and Backloading: ACER offers a transitional arrangement for the period from 2014 to 2026. Certain transactions must be reported retrospectively within 90 days following the transition.
Impact on Hydrogen Reporting
Starting July 1, 2028, market participants active in the hydrogen market will be required to submit annual reports on their transactions. Further details will be published by the end of 2027.
ACER will continue to work with market participants and competent authorities to ensure a smooth transition to the new requirements and provide the necessary additional guidance.
Conclusion
The new rules under Regulation (EU) 2026/256 require a comprehensive adjustment of data reporting in the wholesale energy market. The most significant changes include the transition to new reporting formats and the introduction of additional reporting obligations for hydrogen and storage transactions. Market participants should prepare for the transitional periods and specific reporting requirements.
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