28JUL

ACER opens the REMIT reporting annex

1 min read

09:28UTC

ACER opened its consultation on the REMIT transaction-reporting annex on 16 July, exactly on schedule, and set the close for 11 September.

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Key takeaway

ACER's REMIT annex consultation closes 11 September, one quarter before cross-border enforcement activates.

ACER, the EU agency that coordinates national energy regulators from Ljubljana, opened its public consultation on the REMIT transaction-reporting annex on 16 July, on exactly the date it had scheduled , and set the close for 11 September ¹. REMIT, the EU Regulation on Wholesale Energy Market Integrity and Transparency, obliges trading firms to report their wholesale energy transactions to the agency; the annex specifies the format and scope of those reports.

The substantive change sits in the scope clarification. The annex covers energy derivative transaction reporting and draws the boundary against Regulation (EU) 648/2012, the EMIR framework governing OTC derivatives, central counterparties and trade repositories ². Where a trade falls determines which reporting pipe it goes down, and firms running both frameworks have been carrying duplicate builds against an unclear line.

The stated audience names who has to answer: market participants, national regulators, registered reporting mechanisms and organised marketplaces. Cross-border REMIT enforcement activates in Q4, so roughly seven weeks remain to comment on the standard, then a single quarter to implement against a final text nobody has seen yet.

Deep Analysis

In plain English

ACER, the EU agency that watches over energy markets to catch price manipulation and unfair trading across borders, enforces its rulebook, REMIT, in every member state. To enforce REMIT properly, ACER needs companies that trade energy contracts to report their trades in a standard format. It has opened a public consultation, running from 16 July to 11 September, asking traders, regulators and market operators for feedback on exactly what that reporting format should cover. This is a technical, behind-the-scenes step, but it matters because it sets up the data ACER will use later this year when its stronger cross-border investigation powers switch on.

Deep Analysis

Root Causes

REMIT's 2024 revision gave ACER direct cross-border investigatory powers, but those powers depend on regulators and trading venues reporting energy-derivative transactions in a consistent format. The consultation exists because that reporting format has to be clarified against EMIR, Regulation (EU) 648/2012's rules for OTC derivatives, clearing houses and trade repositories, before ACER's enforcement teeth can be used with confidence in the data underneath them.

Without an agreed annex, national regulators and reporting mechanisms would be free to interpret reporting scope differently, which would undermine the cross-border investigations the 2024 revision was designed to enable.

What could happen next?

Precedent
A clarified reporting annex gives ACER a firmer evidential basis once its expanded cross-border investigatory powers activate in the second half of 2026, strengthening any future enforcement action against suspected market manipulation.

Sources:ACER

Mentions:ACER →REMIT →

First Reported In

Update #28 · Hormuz premium inverts the German spark spread

ACER· 20 Jul 2026

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Causes and effects

Caused by

ACER lifts price cap to EUR 99,999

ACER's 22 June cross-border price-limit widening scheduled the REMIT annex consultation that opened on 16 July as planned.

Occurred 22 Jun 2026

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This Event

ACER opens the REMIT reporting annex

Firms get roughly seven weeks to shape the reporting standard and a single quarter to build systems against whatever emerges from it.

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