4 Min Read MOSCOW (Reuters) - Four thousand kilometres from Moscow near the shores of the Angara River, a Russian firm operating a vast data centre run on cheap local hydroelectric power is reaping the rewards of bitcoin’s surging prices and plans to double its power output this year. BitRiver hosts equipment at its flagship 100-megawatt data centre in the city of Bratsk, along with other smaller sites, for foreign miners of the cryptocurrency from the United States, Europe and Japan who want to harness the region’s cheap energy. The company could already be responsible for as much as 2% of global bitcoin mining, Chief Executive Igor Runets estimated, but added precise figures in the sector were hard to come by.