ENTSO-E, the European Network of Transmission System Operators, has announced the successful synchronisation of the electricity systems of the Baltic states with the corresponding systems of Continental Europe. This is a historically significant milestone for the Europe and the Baltic states, strengthening the energy resilience and independence across the region.
Estonia, Latvia, and Lithuania successfully synchronised their electricity grids with the Continental Europe Synchronous Area, which serves 400 million customers, on 9 February 2025 at 14:05 EET. It enables the Baltic States to manage their electricity grids in close co-operation with all other Continental European countries, with stable and reliable frequency control, significantly enhancing regional energy security and breaking their reliance on the Russian and Belarussian systems for frequency management. All electricity interconnections with Russia and Belarus have been permanently disconnected.
This process follows years of thorough preparation and co-operation among the Baltic transmission system operators Elering (Estonia), Augstsprieguma tīkls (AST, Latvia), Litgrid (Lithuania), and their counterparts in the European synchronous area. A particularly important role of PSE in Poland was the overall co-ordination and project management, as a direct neighbour and as the system which physically connects the Baltic States’ systems to Continental Europe. Extensive infrastructure upgrades in the Baltic states and Poland were essential for this achievement. Amprion, as Continental European Co-ordination Centre North supported the planning and co-ordination.
This synchronisation has been strongly supported by the European Union and ENTSO-E, the association of European electricity transmission system operators. Their contributions have included technical guidance, operational and legal expertise, and European funding to facilitate the successful integration.
For more information, contact: media@entsoe.eu
