Ownership: 50 %
Production: 10.4 GWh
Power: 2.4 MW
Stegaros power plant in Tinn Municipality in Telemark County came online in 2002. The power plant exploits the elevation difference between Mårvatn and Kalhovdfjorden and has a capacity of 2.4 MW and a potential mean annual production of about 12 GWh. The power plant uses the existing 2.4 kilometres long head race tunnel from lake Mårvatn.
Statkraft and Tinn Energi each have a 50 per cent ownership share of the power plant.