Fenno–Skan

Fenno–Skan is the designation of the high voltage direct current transmission between Dannebo in Sweden and Rauma in Finland.

At the Swedish end the cable directly enters the Dannebo static inverter plant near the Forsmark nuclear power station about 1 kilometre (0.62 mi) from the coast at 60°24'16"N 18°8'4"E. However, the electrode line from the static inverter plant to the ground electrode situated at 60°35'51"N 17°57'46"E is built as overhead line.

There is a 33 kilometres (21 mi) long overhead line section from the coast in Finland at 61°4'37" N, 21°18'18" E to the static inverter station in Rauma, situated at 61°9′7″N 21°37′32″E.

800 MW, 500 kV subsea transmission connection was laid in 2011 by the cable laying ship SC Skagerrak, and it cost €150 million.

The Fenno–Skan 2 cable is connected to the converter station by a 70 kilometres (43 mi) long DC overhead line.

[6][7] The cost to Finnish consumer and industry in the following two months in higher electricity prices was estimated to be 80 million €.

Fenno-Skan HVDC power line, running over Turku-Pori route in Finland. Unlike in 3-phase AC power transfer, only two wires instead of three are required (in addition to the lightning protection wires, which on the Finnish side serve as electrode line).