Apple's data center in Newark, Calif., now runs entirely on renewable energy sources, primarily wind power, John Paczkowski writes. Its new data center in Maiden, N.C., purchases renewable energy from the power grid and also generates 20 megawatts of solar power from its on-site solar array. "One hundred percent of the energy needs at Maiden are renewable," says Apple's Scott Brodrick. He adds, "We switched over to these energy sources in December, and we're committed to generating over 60% of the energy needs at that facility onsite using renewable energy sources that we've built. Maiden is completely coal-free. It is 100% renewable, 0% coal."