Those with a fundamental belief in the value of free markets will find no surprises in this report:

Over the past two decades, huge swaths of the economy have been deregulated, from banking to electricity to airlines. But has competition increased efficiency? In a paper forthcoming in the American Economic Review, a group of academics from Emory University’s Goizueta School of Business, MIT, and the University of California’s Haas School of Business say yes. In Do Markets Reduce Costs? Assessing the Impact of Regulatory Restructuring on U.S. Electric Generation Efficiency, the researchers examine production at fossil-fuel generating plants from 1981 to 1999, before and after deregulation. Publicly owned plants, which were largely sheltered from deregulation, experienced the smallest efficiency gains. Investor-owned plants in states with restructured markets improved the most. Even in a stodgy old industry like electricity, markets do seem to work their magic.