The air intake for the data center is seen at the U.S. National Renewable Energy Laboratory (NREL) Research Support Facility (RFS) in Golden, Colorado September 4, 2013. Because of Colorado's cool and... more 
The air intake for the data center is seen at the U.S. National Renewable Energy Laboratory (NREL) Research Support Facility (RFS) in Golden, Colorado September 4, 2013. Because of Colorado's cool and dry climate, NREL can just use direct, filtered, air drawn in via this intake, to cool the data center 70 percent of the year. The 800 occupants of the RFS building consume only the amount of energy generated by renewable power on and near the building. REUTERS/Rick Wilking (UNITED STATES - Tags: ENVIRONMENT ENERGY) less 
1 / 7
Reuters | Photo By RICK WILKING / REUTERS
Mon, Sep 9, 2013 12:45 PM EDT