Abstract: As a controllable and time-shifting load,seawater desalination has flexible regulating ability,adapting to the intermittency of renewable energy power generation effectively. The desalination uses the excess power produced by the renewable energy to produce fresh water. While satisfying the supply of the fresh water,it also improves the integration of the renewable energy in the power grid.The seawater desalination load provides a good support for the peak-load shaving of the power grid. The paper first reviews the development status of the seawater desalination,and analyzes the principle,energy consumption and operating cost of seawater reverse osmosis（SWRO）technology. Then the application of SWRO technology driven by the renewable energy is discussed. Finally,the necessity of the seawater desalination to cooperate with the development of the power grid is expounded,and suggestions are given for specific implementation mechanisms.