Utilities integrated nearly 2.4 GW (AC) of solar electric capacity in 2012, a 61 percent increase from the ~1.5 GW that was added in 2011 and more than triple the 781 MW added in 2010, according to the U.S. Solar Electric Power Association (SEPA). The group officially released today the full version of its sixth annual Utility Solar Rankings report, which analyzes the amount of new solar power interconnected by U.S. electric utilities.