ACER releases its Opinion on Spain’s National Resource Adequacy Assessment (NRAA). This national assessment complements the European Resource Adequacy Assessment (ERAA) 2024, reflecting recent developments in the country’s electricity system.
On 4 November 2025, the EU DSO Entity submitted its updated statutory documents to the European Commission and ACER. To inform its Opinion, ACER will conduct a consultation to gather inputs from organisations representing all stakeholders.
ACER’s 2025 electricity Monitoring Report reviews progress in integrating EU electricity markets. It examines forward, day-ahead, intraday and balancing markets, and identifies where rules and projects are delayed.
The Spanish energy regulatory authority has imposed a €1 million fine on Enet Energy for attempting to manipulate the national organised gas market eight times from April to May 2023.
This report on gas network use provides a comprehensive overview of capacity booking and usage trends in the EU, exploring how diversified supply, demand shifts and evolving capacity booking strategies are reshaping gas flows across the EU.
ACER’s latest report on key developments in European gas wholesale markets examines key trends in gas supply, demand and market prices during the final months of the gas summer season (July to September 2025).
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.
