[2] It utilizes a drop of 232 meters (761 ft)[1] between its intake reservoir at Nedre Daja (Lower Lake Daja; also Norwegian: Dajavatnet,[3] Lule Sami: Vuolep Dája[3]) and Langvatnet (Long Lake) in Sulitjelma.

The plant operates at an installed capacity of 48 megawatts (64,000 hp), with an average annual production of about 252 gigawatt-hours (910 TJ).

[1] The Fagerli plant was the first one built by Salten Kraftsamband, in cooperation with Sulitjelma Mines.

The power station was upgraded several times, and in 1929 a 4.2 MVA generator was installed with a 3.6 megawatts (4,800 hp) turbine.

A particular problem was the large amount of sediment carried by the Balmi River, which caused extensive wear and tear to the turbines.