Final upgrade testing begins at Statkraft’s 350-MW Nedre Rossaga hydropower plant

A three-month test period for a new unit at Norway’s Nedre Rossaga hydroelectric plant is now under way, utility Statkraft announced this week.

The new 225 MW unit is located in a new powerhouse built by Statkraft over the past three years, and will replace three of the facility’s original six units once the test period ends.

The company said the remaining three units in Nedre Rossaga’s old station have already been upgraded, giving the upgraded project a total installed capacity of 350 MW following the installation of the new unit. The plant’s cumulative capacity was previously 100 MW. reported in March 2013 that the contract to supply the equipment was awarded to Voith Hydro as part of a US$12.9 million package that also included turbines for Statkraft’s Oevera Roessaga and Vessingfoss plants.

“By increasing the tunnel capacity and the efficiency of the new equipment, the total power output of Nedre Rossaga will increase by 200 GWh per year,” Statkraft said. “In total, the annual generation of the power plant will reach 2,100 GWh, or 2.1 billion KWh of renewable energy.”

The upgrade was part of a $165.5 million project announced by Statkraft in March 2010. Construction began in January 2013 and also included more than 19 kilometers of new tunnels and environmental improvements.

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Michael Harris formerly was Editor for

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