Microsoft Data Center, Dublin, Ireland
Microsoft’s first mega-data center in Europe, the Dublin facility encompasses 303,000 square feet. It uses ambient air to cool the hardware inside, taking advantage of the island’s climate where the temperature between 1971 and 2000 didn’t break 85 degrees F. Plus Microsoft runs the facility at 75 degrees, with occasional spikes to 85. The advantage: For more than 95% of the time the facility can run without mechanical or refrigerated cooling systems, and mechanical cooling systems alone in traditional data centers account for about 38% of power consumption. The data center uses no water for cooling.