To support compliance with the new obligations, ACER has published two open letters detailing key changes and expectations for REMIT data reporting parties.
On 25 March 2026, ACER received a proposal from the European Network of Transmission System Operators for Electricity (ENTSO-E) to amend the methodology for the regional sizing of reserve capacity. ACER will decide on the amendment by June 2026.
ACER released its report on the Latvian gas transmission tariffs, evaluating compliance of the proposed reference price methodology (RPM) with the requirements of the EU Network Code on Harmonised Transmission Tariff Structures.
On 20 April 2026, ACER will open a public consultation on amendments to the gas network code on interoperability and data exchange. The aim is to assess the need to amend the network code to reflect recent regulatory and market developments.
ACER has updated Annex VII of its Manual of Procedures and related FAQs on how to report ‘inside information’ under REMIT. The aim is to further harmonise the disclosure of inside information by providing additional guidance and improve data quality.
ACER’s 2026 Monitoring Report on energy infrastructure development in Europe examines whether electricity, gas and hydrogen networks are adapting to changing energy needs, and what this means in terms of investment costs, delays and costs for consumers.
