Abstract:Evolutionary economics (EE) focuses on the explanation of economic phenomenon from the aspect of originality and heterogeneity. Based on the theory of EE, this paper investigates empirically the impact of environmental regulation on the competitiveness of electric power firms. The results show that administrative regulation, market oriented regulation and subsidy are all positive to electric power enterprise competitiveness. Meantime, administrative regulation and marketoriented regulation have different impact on competitiveness of power enterprises with various scales. Market oriented regulation greatly promotes the competitiveness of the enterprises with high level of innovation ability.