Sundsfjord Hydroelectric Power Station

The Sundsfjord Hydroelectric Power Station (Sundsfjord kraftverk or Sundsfjord kraftstasjon) is a hydroelectric power station in the municipality of Gildeskål in Nordland county, Norway. Part of the plant's catchment area also lies in the municipality of Beiarn.

The plant utilizes a drop of 317 m, using three lakes as reservoirs: Sokumvatnet (Såhkamjávrre) and Langvatnet (Gåddumjávrre), both regulated between an elevation of 331 m and 299 m, and Arstaddalsdammen, which is regulated between an elevation of 333 m and 299 m. The Forså Hydroelectric Power Station supplies water to Sokumvatnet and the Langvann Hydroelectric Power Station supplies water to Langvatnet.

The plant has three 34 MW Francis turbines with an installed capacity of 102 MW and an average annual production of about 535 GWh. Its catchment area is 168 km2. The plant was originally built by Norsk Hydro and Gildeskål Kraftlag to supply industry at Glomfjord and is now owned by Salten Kraftsamband. It came into operation in 1963.