Registered Reporting Mechanisms
REMIT-authorised intermediaries that report wholesale energy transaction data to ACER on behalf of market participants.
Last refreshed: 17 April 2026
Which RRMs will lose their ACER authorisation because they are not EU-established?
Timeline for Registered Reporting Mechanisms
Mentioned in: ACER opens REMIT consultation as recast binds 29 April
European Energy Markets- What is a Registered Reporting Mechanism under REMIT?
- An RRM is an entity authorised by ACER to collect and submit wholesale energy transaction data to ACER on behalf of market participants, reducing the individual reporting burden.Source: internal
- Do UK-based RRMs need to relocate to the EU after the REMIT recast?
- The REMIT recast binding from 29 April 2026 requires RRMs to be legally established within the EU. UK-based RRMs that previously served EU clients may need to establish EU entities or face deregistration.Source: internal
- What is the difference between an RRM and an IIP in REMIT?
- RRMs report transaction data (trades) to ACER, while IIPs (Inside Information Platforms) are platforms used to publicly disclose inside information that could affect energy prices. Both must be EU-established under the REMIT recast.Source: internal
Background
Registered Reporting Mechanisms (RRMs) are entities authorised under the EU REMIT regulation to collect and submit wholesale energy market transaction data to ACER on behalf of market participants. Under the REMIT recast framework that became binding on 29 April 2026, RRMs must be legally established within the European Union, a requirement that directly affects non-EU operators, including some post-Brexit UK-based platforms, who had previously reported on behalf of EU-linked counterparties.
RRMs were introduced with the original REMIT Regulation (No. 1227/2011) and implementing Regulation (No. 1348/2014) to reduce the reporting burden on individual market participants by allowing specialist intermediaries to handle data formatting, submission, and compliance checks. Registered with ACER, they play a critical technical role in the EU energy market transparency architecture, processing millions of trade reports annually. They operate alongside Inside Information Platforms (IIPs) which separately handle the disclosure of price-sensitive inside information.
The REMIT recast imposes new data quality, cybersecurity, and organisational requirements on RRMs, alongside the EU-establishment rule. ACER's April 2026 consultation (running to 12 June) is seeking feedback specifically on the transaction reporting guidelines that will define how RRMs submit data in practice. Non-compliant RRMs face deregistration, which would disrupt the reporting chain for market participants who rely on them.