Dalsfoss power plant is located on the Kragerø River in Kragerø Municipality in Telemark County.
Ownership: Statkraft is an indirect co-owner through its 66.62 per cent ownership in Skagerak Energi AS
Production: 30.6 GWh
Power: 6.3 MW
The power plant was commissioned in 1907 and upgraded in 1958. The plant has three generating units and an installed capacity of 6.3 MW.
The power plant building remains today virtually unchanged from 1907, apart from a minor technical upgrade in 1957-1958 in connection with the replacement of two of the turbines. The third turbine from 1907 is still in operation. All turbines are Kaplan type units.
The gross height of fall is 22 metres.
The dam has recently been upgraded to meet new safety requirements from the Norwegian Water Resources and Energy Directorate (NVE). The original vertical log floodgate has been removed and the floodgate area filled in with concrete. The downstream side of the dam is faced with natural stone and on the upstream side, non-functional vertical logs have been installed over the concrete to preserve the original appearance of the dam.
A new power plant is being planned in the same area and will partly replace the original Dalsfoss plant from 1907.
The power plant facility with penstocks, gatehouses and other installations is proposed to be protected under Statkraft's conservation plan, which was submitted to the Directorate for Cultural Heritage in 2012.
Statkraft is co-owner of Dalsfoss through its majority ownership of Skagerak Energi AS. Skagerak Kraft AS, a wholly owned subsidiary of Skagerak Energi, is however responsible for daily operations, and manages the licences and obligations in terms of river management and regulating of the watercourse.