On 2 July 2025, ACER received a proposal from all electricity transmission system operators (TSOs) to amend the methodology for intraday cross-zonal gate opening and closure time.
ACER approves the methodology to be used nationally for identifying non-fossil flexibility needs. Member States now have 12 months to prepare their national flexibility assessments.
ACER-CEER guidance on electricity distribution planning provides practical recommendations to help national distribution grid operators align with Europe’s decarbonisation goals and turn grid development into a driver of the clean energy t
On 2 July 2025, electricity transmission system operators (TSOs) submitted to ACER their proposal to amend how capacity calculation regions (CCRs) are defined across Europe. ACER is now gathering stakeholder views to inform its assessment.
Covering 50 decisions made between 2014 and 2024, the report provides insights into how these decisions determine the cost distribution of major cross-border projects and support project development.
ACER approved the proposal from the EU TSOs to amend the methodology for intraday cross-zonal gate opening and closure time, with several clarifications and adjustments.
On 17 December 2025, the European Network of Transmission System Operators for Electricity (ENTSO-E) submitted its proposal for the European Resource Adequacy Assessment (ERAA) 2025 to ACER.
