NOVELTY - Integrative system of concentrating solar power plant and desalination plant comprises solar heat collector; steam turbine (8) power generation equipment to generate power using steam generated by heat collector; and desalination equipment which turns seawater into freshwater using steam energy, where heat collector generates superheated steam; and power generation equipment uses steam as heat cycle medium; desalination equipment is multistage flash type or multiple-effect type equipment; and steam supply line which extracts steam and supplies it to desalination equipment.    USE - As integrative system of concentrating solar power plant and desalination plant, for generating electric power and desalinating seawater using solar heat.    ADVANTAGE - The present integrative system combines both solar power plant and desalination plant and can operate efficiently. In the system, regardless of change in the load of steam turbine power generation equipment, desired steam can be continuously supplied to the desalination equipment. By selecting steam extraction stage during normal operation of steam turbine power generation equipment, the extracted steam can be supplied to the desalination equipment without decreasing the steam temperature and/or pressure, so the extracted steam can be efficiently utilized. Thus, a large amount of steam can be supplied from the steam turbine power generation equipment to the desalination equipment without a decline in the efficiency of the steam turbine, so that both the power plant and the desalination plant can operate efficiently in the integrative system. The desalination equipment can be continuously operated without a decline in the amount of freshwater generated. The integrative system can be operated very effectively for only power generation or only for freshwater generation. Even if the concentrating solar power plant suddenly stops power generation operation, the solar desalination plant can continue freshwater generation operation safely and conversely even if the solar desalination plant stops urgently, the concentrating solar power plant can continue power generation operation safely. In addition, according to present system, a large amount of steam is generated using solar heat without combustion of fossil fuel and electric power and freshwater are generated using this steam, so a large amount of electric power and freshwater can be generated in environmentally friendly manner without carbon dioxide emissions at low cost.    DESCRIPTION OF DRAWING(S) - The figure shows schematic diagram of integrative system.    Steam superheater (6)    Steam turbine (8)    Solar heat collector feed water pump (10)    Desalination equipment seawater inlet valve (17)    Controller (100)