The report is developed within the frames of the “Development of Armenia’s Fourth National Communication to the UNFCCC and Second Biennial Update Report” UNDP-GEF Project.  The aim of this report is to present theoretical solutions for installation of biogas plant with combine heat and power unit (CHP) based on the knowledge and know-how of the similar installation within the Czech Republic. Selected technologies and its economical parameters (costs, lifetime etc.) are based on expert experience of the project consultant.