The economic evaluation of the regenerative electric heating project is an important basis for the project decision,and the present evaluation method is less intuitionistic. In order to provide a new evaluation method, a critical price method is used to determine whether the project has economic feasibility or multiple alternatives.With the analysis of this method, it is concluded that solid heat storage boiler scheme has the best economy, the second is the electrode boiler and water storage scheme, and the electric boiler and phase change heat storage scheme is the worst.