Tysso II power plant is located at Lake Ringedalsvannet in Tyssedal, Odda Municipality in Hordaland County.
Ownership: 100 %
Production: 915 GWh
Power: 220 MW
The plant uses a height of fall of 735 metres from the nearby mountain plateau on Hardangervidda. Establishment of the plant led to the development of the waterfalls Ringedalsfossen and Tyssestrengene with their 300 metres of free fall.
The tunnel that transfers operating water to Tysso II goes around Lake Ringedalsvannet, which is located at about 1150 metres above sea level. The tunnel is over 15 kilometres long and has a cross section of between 16 and 18 square metres.
The power plant was commissioned in 1967 and is a partially submerged plant, i.e. part of it is located at a level below the outlet. The power plant has two Pelton turbines, each producing 110 MW. The power plant discharges into Lake Ringedalsvannet, which is the reservoir for Oksla power plant.
Tysso II power plant is currently leased to AS Tyssefaldene, which is also responsible for daily operations.