This article presents the concept and connotations of sustainable comptition strategy from the perspective of systematic science It has discussed the two basic principles of sustainable competition strategy:to unite to compete and to compete dynamicall

On basis of that,the paper studies the transmission impact for market power of generations companies under the circumstances of bidding by oneself and combined bidding strategies.

With the establishment and perfectionlization of the electricity market in China, analying andstudying the undertaking of the collusion bidding on the part of power producers for high interestbecomes a highly urgent issue, the solution of this problem is of great importance in the nurturing ahealthy electricity market.

Local and foreign financial institutions should strengthen joint competitive force and control ability,and promote joint supervision.