The report assesses the compliance of the proposed reference price methodology (RPM) with the requirements of the Network Code on Harmonised Transmission Tariff structures (NC TAR).
On 27 March 2025, ACER received the transmission system operators’ (TSOs’) proposal to amend the Harmonised Allocation Rules (HAR) for long-term electricity transmission rights. ACER will open a public consultation on 24 April 2025.
This ACER report enhances transparency and comparability in electricity network tariff setting by sharing national practices. It also examines and offers insights into various tariff challenges faced by energy regulators.
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.
