Energy recovery from waste represents an important way to reduce the amount of electric energy to be produced using fossil fuels, i.e. non-renewable sources of energy. Moreover, the energy recovery practice can present interesting economic revenues. Since, at the present time, a large amount of waste is disposed in landfills, it is clear how the use of end life products as fuel can present a noticeable relevance. In the present study, different landfill gas (LFG) energy recovery systems, including traditional and innovative technologies, are analyzed through a technoeconomic and an environmental comparison. (c) 2005 Elsevier Ltd. All rights reserved.