Estonia, Latvia, and Lithuania have successfully synchronised their electricity systems with the Continental Europe Synchronous Area on 9 February 2025 at 13:05 CET. This is a key milestone for the Baltic States and for Europe strengthening the energy resilience and independence across the region.

Estonia, Latvia, and Lithuania have successfully synchronised their electricity systems with the Continental Europe Synchronous Area on 9 February 2025 at 13:05 CET. This is a key milestone for the Baltic States and for Europe strengthening the energy resilience and independence across the region.

The synchronisation enables the Baltic States to manage their electricity grids in close cooperation with all other Continental European countries, with stable and reliable frequency control, significantly enhancing regional energy security. Previously relying on the Russian IPS/UPS system for frequency management, the Baltic States have now joined the synchronous grid of Continental Europe, serving over 400 million customers. All electricity interconnections with Russia and Belarus have been permanently disconnected.

This process follows years of meticulous preparation and collaboration among the Baltic States transmission system operators (TSOs): Elering (Estonia), Augstsprieguma tīkls (AST, Latvia), Litgrid (Lithuania), and their counterparts in Continental Europe Synchronous Area. A particularly important role of PSE in Poland was the overall coordination and project management, as a direct neighbour and the system which physically connects the Baltic States’ systems to Continental Europe. Extensive infrastructure upgrades in the Baltic States and Poland were instrumental in enabling this achievement.

This synchronisation has been strongly supported by the European Union and ENTSO-E, the association of European electricity TSOs. Their contributions included technical guidance, operational and legal expertise. Amprion as Continental European Coordination Centre North supported the planning and coordination of synchronization.

The synchronisation project is implemented with the co-financing of the European Union.

Grzegorz Onichimowski, PSE CEO:

„Preparations for synchronization have been going on for several years and PSE have been involved from the very beginning. This is a historic event, but our cooperation does not end there. Preparations are already underway for the construction of a new Poland-Lithuania interconnection, which will further strengthen security in the region.”

Zbyněk Boldiš, ENTSO-E President:

“The synchronization of the Baltic States with the Continental Europe Synchronous Area is an important step towards strengthening the energy independence and security of Estonia, Latvia, and Lithuania. It also underscores the power of European solidarity and cooperation in building a resilient and interconnected energy future.”

The Baltic States electricity systems enter Continental Europe Synchronous Area after disconnecting from Russia-controlled IPS / UPS system on 8:09 CET on Saturday, February 8, and successfully completing the isolated operation test.