In the early 1990s, the U.S. electricity industry was plagued by cost overruns and stagnant productivity. Many states turned to deregulation to promote innovation and cut costs, a strategy that had worked for the telecommunications, trucking, natural gas, and airline industries. Yet, after the California energy market's infamous meltdown in 2000-2001 triggered the recall election of Governor Gray Davis, deregulation lost popular and political support...