By 2025, AST reported that two regional interconnector concepts were under study, one of which is the Baltic WindConnector, envisaging an approximately 800 km HVDC cable between Germany, Estonia and Latvia to connect future high-capacity offshore wind farms and enable green power exports to Central Europe. This confirms that the Baltic WindConnector configuration, including a Latvian connection, remains an active subject of technical and economic analysis within the broader Baltic–Germany interconnection planning.
The Baltic WindConnector, a planned HVDC submarine interconnector between Germany and the Baltic states (primarily Germany–Estonia with Latvian participation), was included on ENTSO-E’s Ten-Year Network Development Plan 2024 (TYNDP 2024) candidate list as a trilateral TSO project promoted by Elering, AST and 50Hertz, following joint cost–benefit and grid studies and submission to the TYNDP process.
Following the May 2023 Letter of Intent, the TSOs AST, Elering, Litgrid and 50Hertz completed cost–benefit analyses, grid calculations and topology studies for hybrid interconnector options between the Baltic states and Germany, culminating in the submission of the Baltic WindConnector (project 1211) to ENTSO-E’s Ten-Year Network Development Plan 2024 as a candidate project. This work marked a key early development milestone, demonstrating the project’s regional importance and providing an initial quantified assessment of its technical and economic benefits.
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Baltic WindConnector (not to be mistaken for the Baltic Cable) is a proposed hybrid submarine interconnector being developed by German TSO 50Hertz and Estonian TSO Elering. The project is conceived primarily to aggregate and transmit offshore wind generation from Estonian waters while providing a...
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BALTICS-GERMANY INTERCONNECTION
On 9 May 2023, at the Baltic Offshore Wind Forum in Berlin, German TSO 50Hertz and Estonian TSO Elering, together with Latvian TSO AST and Lithuanian TSO Litgrid, signed a Letter of Intent to jointly develop the Baltic WindConnector, a hybrid submarine cable interconnector in the Baltic Sea between Estonia and Germany. The LoI formally launched the project’s early development phase, committing the parties to study an electricity interconnector of up to 2,000 MW, strengthen regional energy cooperation, and explore how the cable could connect future high-capacity offshore wind farms and enable green power exports to Central Europe.
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