Deregulation of the electricity market is an important issue in the energy sector. A major aim of deregulation is to increase competition among electricity retailers/suppliers and thereby enrich consumer choice among electricity products Retail energy markets are the final link in the energy supply chain. Energy retailers buy electricity in wholesale markets, package it with transportation services and sell it to customers. This is typically the main interface between the electricity industry, and customers such as households and small businesses. The electricity retailers are simply competing for the right to send a customer a bill, to package up a range of tariffs and lock the customers into a contract, also the opening to competition into retail electricity supply gives the opportunity to consumers to choose their own supplier. This paper analyze the profit of the retailer based on demand response(DR) and participation of customer in DR programs, also in this paper we consider stochastic programming and risk modeling of the retailer by LODA SHIFTING.