One nuclear plant provides the energy equivalent of 1,200 windmills or 20 square miles of solar panels.Without the need for large cooling towers, MSRs can be much smaller than typical light-water plants, both physically and in power capacity. Today's average nuclear power plant generates about 1,000 megawatts. A thorium-fueled MSR might generate as little as 50 megawatts. Smaller, more numerous plants could save on transmission loss (which can be up to 30 percent on the present grid). The U.S. Army is interested in using MSRs to power individual bases, Kutsch says, and Google, which relies on steady power to keep its servers running, held a conference on thorium reactors last year. "The company would love to have a 70- or 80-megawatt reactor sitting next door to a data center," Kutsch says.