Demand response in electricity grids are used to manage and maximize efficient consumption of electricity in response to the supply. Demand response is necessary during storms, heat waves, and maintenance. Demand response is used in the hot summer days. Costumers can reduce their consumption of electricity to save money when there are times when the prices are higher than usual. Demand response can respond to requests to actually shut off. De and response also includes energy efficiency, home and building energy management, distributed renewable resources, and electric vehicle charging. Customers that use demand response are mostly large and small commercial and residential customers. Many services that need energy can be reduced in critical times where the energy is more expensive. Demand response can be used to reduce the peak demand for energy, which reduces plant and capital cost requirements. Demand response can also increase demand when needed.