TY - JOUR AU - Markiewicz,Kira AU - Rose,Nancy L. AU - Wolfram,Catherine TI - Do Markets Reduce Costs? Assessing the Impact of Regulatory Restructuring on U.S. Electric Generation Efficiency JF - National Bureau of Economic Research Working Paper Series VL - No. 11001 PY - 2004 Y2 - December 2004 UR - http://www.nber.org/papers/w11001 L1 - http://www.nber.org/papers/w11001.pdf N1 - Author contact info: Kira R. Fabrizio Boston University Tel: 919-660-7760 E-Mail: kfab@bu.edu Nancy L. Rose National Bureau of Economic Research 1050 Massachusetts Avenue Cambridge, MA 02138 Tel: 617-613-1246 E-Mail: nrose@mit.edu Catherine Wolfram Haas School of Business University of California, Berkeley Berkeley, CA 94720-1900 Tel: 510/642-2588 Fax: 510/643-1420 E-Mail: wolfram@haas.berkeley.edu AB - While neoclassical models assume static cost-minimization by firms, agency models suggest that firms may not minimize costs in less-competitive or regulated environments. We test this using a transition from cost-of-service regulation to market-oriented environments for many U.S. electric generating plants. Our estimates of input demand suggest that publicly-owned plants, whose owners were largely insulated from these reforms, experienced the smallest efficiency gains, while investor-owned plants in states that restructured their wholesale electricity markets improved the most. The results suggest modest medium-term efficiency benefits from replacing regulated monopoly with a market-based industry structure. ER -