The Agency for the Cooperation of Energy Regulators (ACER) launched a public consultation on transaction reporting guidelines on 16 April 2026, running to 12 June 1. The recast Regulation on Wholesale Energy Market Integrity and Transparency (REMIT) framework enters force on 29 April . Market participants are being asked to comment on detailed reporting guidance that binds them from 29 April and receives final form only after 12 June.
ACER is the EU body coordinating national energy regulators and enforcing REMIT, the horizontal market-abuse regime covering wholesale gas and power. A consultation opened after entry-into-force is a compliance paradox, and the triage is the explicit management problem rather than the rule content itself. Firms already know the direction of travel; what they do not know is the stable final text against which to sequence their systems build.
The Delegated Regulation requires Registered Reporting Mechanisms (RRMs) and Inside Information Platforms (IIPs) to be established within the EU 2. For non-EU reporting intermediaries currently serving European energy markets, this is a jurisdictional question with a 29 April deadline and no grandfather clause in the recast text. ACER and the European Commission have convened a joint webinar on 23 April titled "New REMIT implementing rules for energy market integrity and transparency." The 40th Madrid Gas Regulatory Forum on 29-30 April is the first industry venue where the public response will surface.
The simultaneity is the operational cost. Five other deadlines compress into the same nine-day window : the ceasefire expiry on 21-22 April, the European Commission crisis package on 22 April, the ACER-EC webinar on 23 April, the Russian LNG ban , and the Madrid Forum on 29-30 April. Firms triaging the REMIT build will accept known compliance debt rather than miss the supply-side moves that settle into the same calendar. That acceptance is itself a regulatory outcome, and one that will surface in enforcement statistics several quarters downstream.
