Development Of The Concept Of A 0.3 - 0.5 Mw Municipal Biogas Plant As Part Of The "Green Energy For The Opoczno Region" Project - Stage Ii, Co-Financed By The National Reconstruction And Resilience Plan. Investment B2.2.2/G1.1.2 Res Installations Implemented By Energy Communities As Part Of Pre-Investment Measure A1: Development Of New Energy Communities Operating In The Field Of Renewable Energy - Stage Ii.