The flow of electricity between the Baltic countries of Estonia, Latvia and Lithuania and Russia was officially severed Saturday morning after officials switched off the Soviet-era grid’s transmission lines and prepared to join the rest of Europe on Sunday.

Estonia, Latvia and Lithuania said on Sunday they had successfully synchronized their electricity systems to the European continental power grid, one day after severing decades-old energy ties to Russia and Belarus.

The Baltic states of Estonia, Latvia, and Lithuania are now unplugged from Russia's electricity grid and have joined the European Union's network.Plans for the move - which have been in the works since 2007 - were seen as essential for European security and had been brought brought forward after Russia's full-scale invasion of Ukraine in 2022.