Abstract: Based on the load space of the self-provided power plant, matching the scale of new energy allocation, the electricity generated by the new energy replaces the original electricity supplied by the self-provided power plant.It uses the production simulation method for simulation analysis, the operation characteristics of the self-provided power plant, new energy output characteristics, energy storage and wind fire（self-provided power plant） coupling operation analysis.It is concluded that the proportion of renewable energy alternatives by coal-fired self-provided power plants could meet the standards.