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  • Estlink HVDC Light link
Estlink map.
Estlink map with converter stations Espoo and Harku.

Estlink HVDC Light link

The Estlink HVDC Light link is one of the EU priority projects for the Trans-European Network.

Estlink is owned by a special purpose company: Nordic Energy Link AS. This company is owned by five Baltic and Finnish utilities: Eesti Energia Latvenergo, Lietuvos Energija, Helsingin Energia and Pohjolan Voima. The link crosses the Gulf of Finland and connect to substations near Tallinn and Helsinki.



Harku station
The whole link is underground or underwater by high-tech extruded (oil-free) HVDC Light cables; there are no overhead lines.

Estlink is the latest part of the Baltic ring. It allows for power exchange between the Baltic countries (Estonia, Latvia and Lithuania) and the Nordel grid.

ABB received the contract for the entire HVDC Light link: converter stations and DC cables. The whole project was completed in 19 months.


Main data
Commissioning year:2006
Power rating: 350 MW
No of circuits:1
AC Voltage:330 kV (Estonia), 400 kV (Finland)
DC Voltage:±150 kV
Length of DC underground cable:2 x 31 km
Length of DC submarine cable:2 x 74 km
Main reason for choosing HVDC Light:Length of land cable, sea crossing and non-synchronous AC systems

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    ABB contact for United States of America

    Mike Bahrman

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