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European Energy Markets
15JUN

ACER tightens REMIT before guidance locks

2 min read
12:23UTC

ACER holds its annual REMIT enforcement workshop with the European Commission on Thursday 11 June, the day before the transaction-reporting guidance consultation closes. Its expanded cross-border powers activate in H2 2026.

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Key takeaway

ACER's final REMIT industry workshop runs the day before the rulebook it discusses is locked.

ACER holds its annual REMIT workshop with the European Commission on Thursday 11 June, and the transaction-reporting guidance consultation closes the next day, Friday 12 June 1. ACER is the EU's energy-regulator agency; REMIT, the Regulation on wholesale Energy Market Integrity and Transparency, is the framework prohibiting manipulation and insider trading in gas and power. The workshop covers secondary reporting legislation, market surveillance and the agency's expanded cross-border investigatory powers, which activate in the second half of 2026.

Compliance desks should read the sequencing closely: the workshop runs the day before the rulebook it discusses is locked. REMIT 2.0's first T+10 reporting deadline already landed on 12 May , and ACER logged 204 suspicious-transaction reports in 2025, double the prior year, before the guidance was even finalised .

From H2 2026, ACER can open cross-border manipulation investigations directly rather than refer them to national regulators. ACER confirmed the 11 June venue as an enforcement event, not a storage-policy one, in its late-May announcement . No enforcement action under the expanded powers has been announced yet.

Deep Analysis

In plain English

REMIT (Regulation on Wholesale Energy Market Integrity and Transparency) is the EU's version of financial market abuse rules, applied specifically to gas and electricity trading. It bans the same things as stock market rules: insider trading on non-public information, price manipulation, and misleading the market. ACER (the Agency for the Cooperation of Energy Regulators, based in Ljubljana, Slovenia) is the EU body that enforces these rules. On Thursday 11 June, ACER holds a workshop with the European Commission, its final meeting with the energy industry before locking the rulebook on Friday 12 June. From that point on, the rules are final and ACER's expanded powers to investigate firms across borders, without going through national regulators, become fully operational in the second half of 2026. The practical concern for trading desks: ACER reported 204 suspicious trades flagged in 2025, twice as many as 2024, and the surveillance net widens further from July.

Deep Analysis
Root Causes

REMIT 2.0's enforcement escalation traces to the 2024 amendment, which gave ACER direct investigatory and sanctioning powers for the first time, replacing a system in which it could only refer matters to national regulators.

National regulators had inconsistent enforcement records across 27 member states; the prior system created arbitrage opportunities for firms operating cross-border, who faced high-enforcement national regulators in Germany and France but lower-risk environments in some smaller markets. The 2024 amendment removed that regulatory geography by giving ACER jurisdiction over cross-border cases regardless of where the trading entity is registered.

What could happen next?
  • Consequence

    Guidance locked on 12 June removes the compliance ambiguity that firms have used to interpret T+10 reporting requirements since REMIT 2.0's 29 April 2024 entry into force; non-compliance exposure crystalises from 13 June.

  • Risk

    ACER's first cross-border enforcement action under the expanded H2 2026 powers will establish case law on what constitutes actionable manipulation at the EU level, potentially re-pricing compliance costs across all active market participants beyond the initial respondent.

Sources:Clean Energy Wire
Mentions:ACER →European Commission →REMIT →
First Reported In

Update #16 · TTF closes above EUR 50 on Iran risk re-rate

Clean Energy Wire· 8 Jun 2026
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Causes and effects
Caused by
REMIT 2.0 T+10 deadline lands today
The 11 June workshop is the formal industry engagement point after the first T+10 reporting deadline landed 12 May, before the rulebook it discusses is locked on 12 June.
Occurred 12 May 2026
Read story →
REMIT 2.0 T+10 lands; STORs double
ACER's 204-STOR 2025 report confirms the surveillance net is already catching more; the 11 June workshop precedes expanded cross-border powers activating in H2 2026.
Occurred 12 May 2026
Read story →
ACER 11 June workshop is REMIT enforcement, not storage
ACER confirmed the 11 June workshop as a REMIT enforcement venue, not a storage-policy one, in its 27 May announcement.
Occurred 27 May 2026
Read story →
This Event
ACER tightens REMIT before guidance locks
ACER's final industry engagement runs the day before the rulebook it discusses is locked, with the surveillance count already doubled.
Led to
ACER dates its cross-border powers switch-on
ACER confirmed 11 June workshop as REMIT enforcement event not storage venue; workshop is the realisation of that prior signal
Occurred 11 Jun 2026
Read story →
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