Estimating Effective Concentration in Deregulated Wholesale Electricity Markets
利用1978年美国本土数据，通过模拟寡头均衡估计电力批发市场的有效集中度，发现其高度依赖输电容量和公共企业行为，为放松管制政策提供参考。
To inform debates about deregulation of wholesale markets for electricity, we estimate effective concentration in those markets in the contiguous United States in 1978. Our estimates are based on simulated oligopolistic equilibria, the characteristics of which are derived from a new and comprehensive data base. We find, among other things, that effective concentration is highly dependent on the adequacy of transmission capacity in each area, about which usable data are unavailable, and on the behavior of the existing public enterprises in this industry. Policy implications of our findings are discussed.