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从产业组织理论出发,系统地分析了电力行业的市场集中度、进入壁垒及产品的差别化。综述了电力行业改革前后的市场结构,通过赫希曼-赫菲德尔指数分析(A.O.Hirschman-O.C.Herfindahl index),得出我国电力市场无论从全国范围还是区域市场的集中度仍然很高,现有市场成员对市场的控制力很大,进一步提出了电力行业垄断竞争形成的几大原因。
Based on the theory of industrial organization, this paper systematically analyzes the market concentration, barriers to entry and the differentiation of products in the power industry. This paper reviews the market structure before and after the reform of the power industry. Through the AOHirschman-Ochnerfindahl index, it concludes that the power market in our country is still highly concentrated both in the whole country and in the regional market, Market members have great control over the market and further put forward several major reasons for the monopolistic competition in the power industry.