The invention discloses a power supply optimization planning method considering renewable energy sources. The power supply optimization planning method considering renewable energy sources includes that gathering information to generate a power supply optimization planning base database, wherein the information comprises a planning overview, basic parameters of a power plant, system load, production decision constraints, economic and technical indexes and hydrological information; building a mathematical power supply optimization planning model, wherein the mathematical model comprises decision variables, object functions and constraint conditions; using a heuristic algorithm to solve the power supply optimization planning problem, wherein the power supply optimization planning decision content comprises the building time and building volume of each power plant to be selected; deciding the operation sequence of the power plants according to two indexes (incremental rate of the unit electric quantity cost and incremental rate of the unit electricity cost), and using the balance between the electricity and the electric quantity as an operation stop condition. The power supply optimization planning method considering renewable energy sources obtains a power supply optimization planning scheme for the power plant using renewable energy sources through modeling the power plant investment and running cost calculation and quantifying renewable energy source incentive measures.