Construction of Harmony Link marine cable connection
Status: HVDC cable and converter station tenders are stopped.
The aim of the project
To implement the strategic goal of the state and start operating on one frequency together with the networks of continental Europe by building a new maritime connection with Poland.
Significance of the project
Synchronisation with the networks of continental Europe is the last step towards Lithuania’s energy independence. Currently, our electricity system is still dependent on frequency control in Russia, but already in 2025, it will operate in one synchronous area together with the systems of other European countries.
Synchronisation will take place using the existing interconnection between Lithuania and Poland (LitPol Link). The construction of a new offshore Harmony Link interconnection between the two countries will enable market integration.
| Project details |
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| Territory: Baltic Sea (exclusive economic zones of Lithuania, Poland and Sweden, territorial part of Lithuania), territory of Lithuania (municipalities of Kretinga district and Palanga), territory of Poland. |
| Start of the planned interconnection: Darbėnai substation, Kretinga district municipality, Žyneliai village. |
| Completion of the planned interconnection: Žarnoviec substation in the Pomeranian region of Poland |
| Total length of the connection: 330 km |
| Power: 700 MW |
| Estimated completion date: Project is being reorganised |
| Funding: The total investment for the Harmony Link project is around EUR 680 million, of which EUR 493 million will be supported by the Connecting Europe Facility. |
General project information
The approximately 330 km total length of 700 MW submarine and onshore high-voltage direct current interconnection Harmony Link will connect the Žarnoviec substation in the Pomeranian region of Poland with the Darbėnai switchyard in the Kretinga district of Lithuania.
Within the scope of this project, approximately 290 km of submarine cables and about 40 km of land cables and converters will be installed on the Lithuanian and Polish sides. Part of the underground cable route will run along the existing engineering infrastructure objects - roads or power transmission overhead lines.
This will be the second electricity interconnection line between Poland and Lithuania: since 2016, the 500 MW LitPol Link land interconnection, which connects the Elk substation in Poland and the Alytus substation in Lithuania, has been operating. The offshore electricity interconnection is a large and complex project, so it must be carefully prepared. Preparatory work for the Harmony Link project has been going on since 2019.
Work calendar
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Activities
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Date of implementation
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The cable route study in the Baltic Sea was completed
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2019 Q4
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A cooperation agreement was signed with Poland for the implementation phase of the interconnection project
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2020 Q2
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Agreements signed with companies on the preparation of technical specifications for the connection and on consultations on technical, commercial and regulatory issues
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2020 Q2 and Q3
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The concept of the Development Plan and the Strategic Environmental Assessment Report were prepared
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2020 Q3
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An agreement was signed with the European Commission on financing the implementation of the second phase of the Baltic synchronisation project
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2020 Q4
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Selected electrical connection route at sea and on land
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2021 Q1
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Project implementation study completed
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2021 Q1
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Technical specifications of the prepared connector
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2021 Q2
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Report on seabed geophysical and geotechnical surveys along the cable route
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2021 Q3
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Development Plan approved
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2021 Q3
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Tenders are announced for the construction of connection cable and converter stations
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2021 Q3
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More information: https://harmonylink.eu/lt/home/
