In order to achieve a relevant efficiency of hybrid renewable energy system application specially to avoid the intermittent in renewable energy generation, an energy management system is required. The renewable energy system contains a suitable combination (wind turbine, photovoltaic and battery storage) to supply a domestic load connected to grid, by making a strategy for charging and discharging battery. Multi-agent System minimizes the total cost of the energy supplied from grid especially in peak hours. The examination is made for 72 h simulating two scenarios with or without injection into grid, while the tariffication is bi-hourly pricing, where there are two hourly shifts at two different rates during the day. The total cost achieved in the second scenario is 4.31$, compared to 6.04$ when no energy injection into the grid is allowed.