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电力市场中市场势力受供给和需求刚性、市场竞争政策和制度安排,以及输电堵塞等因素影响表现出特殊性。电力市场势力不仅受到主导企业市场份额的影响,还更多地受企业之间战略相互作用或博弈效应、市场需求弹性、竞争性边缘企业供给弹性、边缘企业的市场份额等因素的影响。这些因素与电力生产经营过程中的技术性结合在一起,使规制很难有效进行,在电力市场中产生了明显的市场势力结果。限制电力市场中市场势力的根本途径是设计特别的市场竞争政策和交易制度。
Market power in the electricity market is characterized by supply and demand rigidity, market competition policies and institutional arrangements, and transmission congestion. The power market power is not only affected by the market share of leading enterprises, but also influenced by such factors as the strategic interaction or game effect among enterprises, the market demand elasticity, the supply elasticity of competitive edge enterprises and the market share of edge enterprises. These factors combined with the technicality in the process of electricity production and operation make it difficult to carry out regulations effectively and produce obvious market power results in the power market. The fundamental way to limit market power in electricity market is to design special market competition policy and trading system.