The hydropower project involves about 12 000 meters of tunnel work, construction of the power station and transformer hall in the mountain and concrete work around the intake, power plant area, outflow and portal.

Nedre Otta power plant will use the existing intake dam at Eidefossen power plant. The water will travel through tunnel from the intake to the new power plant. It will have an installed capacity of 85 MW and the annual production from the plant will be about 315 GWh, equivalent to the consumption of around 15,000 households.