Website : www . ecodatacenter . se This company has partnered with Schneider Electric to use nearby wind and solar power to keep its facilities cool . Aside from an impressive PUE of 1.15 , the centre actually takes any extra heat generated from the servers and pushes it back into homes and businesses to be used . All this takes place in Falun , which is a famous mining town in the centre of the country . 04 28 November 2017