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.
ACER received two proposals from the European electricity transmission system operators to amend the implementation frameworks for two European platforms for exchanging balancing energy. ACER will review the TSOs’ proposals and consult with stakeholders.
ACER releases its report on the Polish gas transmission tariffs directed at GAZ-SYSTEM S.A., Poland’s transmission system operator (TSO), which manages the country’s two transmission systems.
ACER publishes its Opinion on ENTSOG's draft gas and hydrogen ten-year network development plan (TYNDP) 2024. ACER’s recommendations aim to support investment decisions and facilitate the efficient development of the European gas and hydrogen grid.
ACER has approved the amendments proposed by electricity transmission system operators to amend how capacity calculation regions (CCRs) are defined across Europe.
ACER releases its Opinion on France’s National Resource Adequacy Assessment (NRAA). This assessment complements the European Resource Adequacy Assessment (ERAA) 2024, better reflecting national characteristics
ACER publishes a position paper introducing output performance indicators to measure the performance of grid-enhancing technologies in electricity transmission.
