Heating a swimming pool is expensive and bad for the planet. Since the 16th of May 2017, the Parisian Butte-aux-cailles swimming pool is heated by the computers situated in the boiler room.
Cooling data-centers is expensive and bad for the planet. The data-center situated under the same swimming pool no longer needs air conditioning: the pool absorbs the waste heat from the computers. (the cooling system represents by itself as much as 45% of the energy consumed.)
It is a win win situation. The system has been created by the start-up Stimergy and helps to save 45 tons of CO2/year.
A growing number of data centers are redirecting the heat from their hot aisles to nearby homes, offices, greenhouses…