The heat generated by the small box of powerful computers is enough to heat the pool about 60% of the time.
https://www.bbc.co.uk/news/technology-64939558?at_medium=RSS&at_campaign=KARANGA&utm_source=dlvr.it&utm_medium=blogger
https://www.bbc.co.uk/news/technology-64939558?at_medium=RSS&at_campaign=KARANGA&utm_source=dlvr.it&utm_medium=blogger