Documents and Publications

The document provides detailed information on projects of common and mutual interest (PCIs and PMIs), with the latest available information up to Q4 2025, including cost and status evolution, technical updates and implementation plans.

The 2025 Consolidated Annual Activity Report outlines ACER’s regulatory work and achievements over the year. It also reviews how ACER delivered on its 2025 work programme. 

In summer 2024, Southeast Europe experienced a sustained period of electricity price spikes. This report analyses the main drivers behind it and lays out measures to increase cross-zonal capacity and system flexibility in the region to mitigate their reoccurrence in the future.

This policy paper explores how Europe could improve the way costs and benefits of cross-border electricity infrastructure projects are shared.

This report analyses the preparedness of persons professionally arranging transactions (PPATs) to detect and report suspicious behaviour. PPATs are trading intermediaries such as energy exchanges, organised market places (OMPs) or brokers, who arrange or facilitate transactions in wholesale energy products.

This report focuses on national regulatory authorities’ (NRAs’) analysis of suspicious transaction and order reports (STORs) submitted by PPATs, their enforcement actions and penalties.