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Environmental life cycle assessment (LCA) in Poland is still a relatively new method of estimating the environmental impact of production processes. This paper presents the results of the simplified life cycle analysis of electricity production process from agricultural biogas. An LCA analysis was selected one of the existing national biogas plants. The selection criterion was based on the availability of substrates (maize silage, distillery slop and sugar beet pulp) and the possibility of obtaining high quality data for analysis (actual data based on the existing biogas plant). In addition, the environmental impact of the biogas power generation technology obtained through the methane fermentation process only of waste materials (distillery slop, sugar beet pulp) and co-processing of waste and maize silage was compared.

Key words: LCA, biogas, waste, combustion, electricity production