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Smart Heat: Heat from the Cloud

Submitted by Baerbel Epp on February 29, 2016
German IT company Cloud&Heat offers its customers two products which would have seemed totally unrelated a couple of years ago: cloud computing and heat for space or water heating. To extract usable heat, Cloud&Heat has developed a special water cooling system for server cabinets to achieve temperatures of 55 °C. Usually, 90 % of the electricity consumed by servers is waste heat. As a consequence, much additional power is required to dissipate the heat. “Our Green Cloud doubles down on saving energy by covering both the cooling and heating demand of residential buildings,” explains Jens Struckmeier, one of the three founders of Cloud&Heat. So far, the IT specialists have installed about 650 servers supplying heat to 25 building projects. Cloud&Heat estimates that the growing number of cloud servers worldwide consume as much energy as an entire country – more than India but less than Japan (see chart on the left.
Source: Cloud&Heat

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