Norway, June 23 -- Statkraft has decided to build the Blåfjell Pump, which will channel more water directly into Blåsjø, Norway's largest hydropower reservoir. This will increase production in the Ulla-Førre power plants by 54 GWh. Four local and regional suppliers have been awarded contracts worth a total of NOK 250 million.The four construction contracts have been awarded to contractors from Karmøy, Suldal, Voss and Grenland. Work on the pumping facility starts already this week. Norway's batteryBlåsjø is Norway's largest "hydropower battery", where water can be stored for several years to balance out weather-related variations between dry and wet years. The reservoir stretches across Ryfylke and Setesdal and is Norway's largest reservoir...