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Reuters

U.S. company devises method to use coal waste to power crypto

Stronghold Digital Mining uses waste left behind by decades-old coal power plants to generate electricity that powers hundreds of supercomputers working to mine bitcoin. “The bitcoin mining network itself is the largest decentralized computer network in the world, and it’s power hungry, so co-locating bitcoin mining and a power plant makes a lot of sense,” said Greg Beard, chief executive officer of Stronghold. Coal ash, the byproduct left over from burning coal to produce electricity, can leach into groundwater and pollute waterways, and contains heavy metals considered to be carcinogens.