At a press conference in Buffalo, New York, Yahoo! announced plans to build one of the greenest, most energy-efficient data centers in the world, in Lockport, New York. The data center will be powered mainly by renewable hydroelectric power from Niagara Falls, with 90% of that energy will powering the servers. Yahoo! expects to have an annualized average PUE (power usage effectiveness) of 1.1 or better. To achieve that, the company’ve come up with a unique building design, called the Yahoo! Computing Coop (because it looks like something chickens live in), which’s angled to take advantage of Buffalo’s microclimate, using 100% outside air to cool the servers.
More info: Yahoo Blog