Adele Peters, Fast Company
Summary
As mining machines harvest bitcoin, they generate excess heat. Instead of letting it go to waste, a Canadian company is capturing it and using it to warm people's homes.
Bitcoin mining uses massive amounts of energy as computers churn through the steps needed to make a record on the blockchain. Now, one mining company is recycling some of that energy to heat buildings.
Heatmine, a Canadian mining company, works in Quebec, where almost all electricity comes from renewable sources, so its carbon footprint is relatively small. But the company saw that it could also extend the value of that electricity by harvesting the waste heat from its mining machines.
The company started first with its own large warehouse. “We’re in Quebec–it’s very cold 10 months of the year,” says Jeremy Dahan, Heatmine’s COO. “So we started recycling the heat.” Heatmine first used the excess energy from its processing systems to heat its water.
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