Municipal solid waste management becomes an important role for the energy recovery from the waste when taking into consideration of energy requirement of the world. Meanwhile municipal solid waste disposal methods have been used as a renewable power source in recent years especially in developed countries. The most common technology landfilling is one of the simple and practical method among the disposal methods in worldwide. Internal combustion engines are used to generate electricity from LFG which is also preferred to generate electricity are most commonly lean fuel burn turbocharged designs. In this paper, starting from a historical overview of LFG driven power plants, the thermodynamic analysis is presented for a Jenbacher 416 GS type landfill gas engine which uses LFG gas produced by Gaziantep Municipal Solid Waste Power Plant. Operation of the municipal solid waste power plant is described in details.