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This paper presents a developed energy management system for a microgrid (MG). This microgrid management system (MMS) generates an optimum operation plan for a microgrid on next day. This planning is optimized from economical view point based on profit maximization while abiding by system constraints and regulatory rules. The MG considered in this paper consists of wind turbine, microturbines, photovoltaic array, fuel cell, electrolyzer, H2 storage tank, reformer, a boiler, electrical and thermal loads. Also in the model possibility of selling and buying electrical energy from the local grid is considered. This system includes the operational cost, thermal recovery, power trade with the local grid, and hydrogen production.