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.
The report highlights progress towards Europe’s transition to clean energy, persistent challenges (such as high and volatile energy prices for European consumers and businesses), and how to address them.
In August 2025, ACER has received a proposal from NEMOs to amend the harmonised maximum and minimum clearing price methodologies for the EU day-ahead and intraday market coupling. On 4 January 2026, ACER has approved the proposal.
ACER publishes its Opinion on the Integrated Model report for EU electricity, gas and hydrogen infrastructure planning, submitted in October by ENTSO-E and ENTSOG and prepared with support from ENNOH.
