Manitoba, Canada-based entrepreneur Bruce Hardy, are using the massive amounts of heat generated by the computers that mine Bitcoin to provide warmth for food plants growing under the same roof. Watch this short CBC video on this multipurpose project:
http://www.cbc.ca/player/play/1129395779938/
Hardy is president of Myera Group, a company whose mission is to develop sustainable food systems using technology. Hardy also has a software company, and has been mining Bitcoins for the last couple of years, using about 30 computers in a readapted 20,000-square-foot building just west of Winnepeg.
This building also houses the company's aquaculture system, which consists of basil and lettuce plants on the second floor, and 800 Arctic char swimming in vats on the first floor. Nutrient-rich water from these fish vats (think fish poop) are then pumped upstairs to nourish these plants, which are being warmed by the heat generated by the Bitcoin mining hardware.
Continue to read here: https://www.treehugger.com/economics/heat-cryptocurrency-mining-aquaculture-myera-group.html