Biogas is a green energy using new technology. Undoubtedly, the produced kW cost is not yet a competitor against nuclear or fossil fuel energies, but the systems installed are more and more efficient, and their financial profitability is increasing. Marc Schaller reports.
SCHALLER, M. (2007): Biogas electricity production hits 17,272GWh a year in Europe. In: Engineer Live: , 46-49 . URL [Accessed: 03.05.2010]