In this paper, a method for solving the economic dispatch and stochastic unit commitment using genetic algorithm provided  and in order to Review a two-stage decision algorithm is used where The first stage of the problem in the unit commitment and The second part of the economic distribution. In addition, the effect of renewable energy sources and Deferrable Demand is evaluated. Western system of the United States as the system under study is considered and The output of the method proposed, along With answers that are comparable with the results of dynamic programming