Documents and Publications

ACER report on distribution system operator investments and revenue setting (2026) finds a major upscaling in electricity distribution grid investment trends across Europe and proposes 10 recommendations to optimise the ramp-up.

This report outlines key developments in European energy markets in 2025, with a focus on the evolving interaction between gas and electricity. It sets out ACER’s recommendations to step up energy market integration efforts to support decarbonisation, energy security and competitiveness goals.

Following the publication of the European Commission's EU Grids Package proposal, ACER's reaction paper outlines improvements to be considered in the legislative process.

The document provides guidance on the information to be voluntarily submitted for the monitoring of operational reliability performance indicators for electricity cybersecurity.