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 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.
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 has approved the amendments proposed by electricity transmission system operators to amend how capacity calculation regions (CCRs) are defined across Europe.
ACER approved two proposals from all electricity transmission system operators (TSOs) to amend the implementation frameworks for PICASSO and MARI, the EU platforms for exchanging balancing energy from frequency restoration reserves.
ACER published its Opinion on Portugal’s National Resource Adequacy Assessment (NRAA), highlighting that the country’s projected electricity adequacy gap may be overstated.
