Fenno‑Skan 2 is a 500 kV HVDC bipole interconnector between Rauma in Finland and Finnböle in Sweden, with a total route length of about 270 km, including roughly 200 km of submarine cable across the Gulf of Bothnia and a 70 km DC overhead line on the Swedish side.
Fingrid Oyj and Svenska Kraftnät awarded Nexans Norway AS a contract worth approximately EUR 150 million to supply the HVDC power cable system for the Fenno‑Skan 2 interconnector between Finland and Sweden. During the construction phase, Nexans manufactured around 200 km of solid, oil‑impregnated MIND cable to form the 500 kV, 800 MW subsea link across the Gulf of Bothnia and associated short land-based sections. The cable was produced at Nexans’ Halden plant in Norway, with production starting in autumn 2009. Nexans was also responsible for installing and laying the submarine cable using its cable‑laying vessel CS Skagerrak, with offshore installation scheduled for and carried out in spring–summer 2011. The contract covered both the subsea and land-based HVDC cable elements, providing the main physical interconnection that increased transmission capacity between the Nordic grids by about 40%.