Website : www . titandataservices . com In Washington State , you ’ ll find Titan Data Centre . This facility used to be a missile base for the Air Force before it was taken over for use as a server farm . Washington State has been one of the forerunners when it comes to green movement , so it ’ s no surprise that this centre clocks in at a PUE of 1.18 . The centre uses evaporative cooling , which essentially cools the machines as the water turns into a gas . Due to the desert heat of the location , the rate of evaporation is high , thus speeding up the cooling process . 08 24 November 2017