ACER and the European Commission held their annual REMIT workshop on 11 June 2026, and the agency confirmed that its expanded cross-border investigatory powers activate in the second half of 20261. REMIT is the EU wholesale market-integrity regime, the horizontal rulebook covering manipulation and insider trading across gas and power. The transaction-reporting guidance consultation closed 12 June, with the final guideline not expected until October 20262.
That sequence locks the reporting rulebook this month while the powers that act on it switch on next quarter. The paradox has run since REMIT's recast entered force on 29 April: firms have reported under a framework whose consultation only closed now and whose final text lands in October, leaving roughly six months of binding obligation measured against interim guidance. For a compliance desk that means live exposure on every cross-border trade from H2, scored against rules still open to revision.
ACER logged 204 STORs, suspicious transaction and order reports, in 2025, double the 2024 count, before the new powers even existed. That doubling came from national regulators escalating ahead of the cross-border activation, which signals where the surveillance posture is heading once ACER can open its own investigations.
The workshop was not a storage-policy venue, as the agency had made clear in flagging it. It marked the handover into the surveillance regime's first full enforcement cycle. The reporting rulebook locks this month; the powers that act on it go live next quarter, and that interval is the exposure window desks have to manage.
