According to the recently released Phase II technical report by the European Network of Transmission System Operators for Electricity (ENTSO-E), all newly built or substantially renovated energy storage systems and renewable energy installations with a capacity above 1MW will. According to the recently released Phase II technical report by the European Network of Transmission System Operators for Electricity (ENTSO-E), all newly built or substantially renovated energy storage systems and renewable energy installations with a capacity above 1MW will. Energy storage technologies are crucial for a secure, resilient and low-carbon energy system, but their implementation is hindered by a range of challenges. This report provides an analysis of the deployment of energy storage technologies in Europe, identifying the current status and the policy. The European Network of Transmission System Operators for Electricity (ENTSO-E) says new EU rules will make grid-forming functions mandatory for large-scale storage and renewable plants. From ESS News ENTSO-E has published its Phase II technical report on grid-forming requirements, outlining how. The EU must create the right conditions to foster battery deployment, by improving permitting, fixing tariff barriers, strengthening supply chains, and ensuring safe, sustainable storage integration across the energy system. BRUSSELS, Belgium (28 January 2026): The EU installed 27. We find. Distribution System Operators (DSOs) are facing a massive increase in requests to connect the new distributed generation capacities, integrating into the power network renewables but also the growing electrification of transport and heating and cooling sectors2. Connecting RES often entails the.