When the VP responsible for provisioning and consolidating eBay’s data centers, Dean Nelson, went to Utah to evaluate the locale as a site for eBay’s next mega data center project, he was mostly happy. It offered tax incentives, low latency for serving eBay’s customers, and the right work force. But there was one problem. “There was a challenge around getting clean power,” says Nelson. Utah has less than 3 percent renewable energy and generates 82 percent of its power from coal, according to data from 2009 from the U.S. Energy Information Administration.