The Sundsfjord Hydroelectric Power Station ( or Sundsfjord kraftstasjon) is a hydroelectric power station in GildeskÃÂ¥l Municipality in Nordland county, Norway. Part of the plant's catchment area also lies in Beiarn Municipality.
The plant utilizes a drop of , using three lakes as reservoirs: Sokumvatnet () and Langvatnet (), both regulated between an elevation of and , and Arstaddalsdammen, which is regulated between an elevation of and . The ForsÃÂ¥ Hydroelectric Power Station supplies water to Sokumvatnet and the Langvann Hydroelectric Power Station supplies water to Langvatnet.
The plant has three Francis turbines with an installed capacity of and an average annual production of about . Its catchment area is . The plant was originally built by Norsk Hydro and GildeskÃÂ¥l Kraftlag to supply industry at Glomfjord and is now owned by Salten Kraftsamband. It came into operation in 1963.