In this book, an experimental analysis of compact biogas plant is performed using biogas produced with the help cow dung and algae. During the production of biogas by cow dung, methanogenic bacteria produced and it can be recycled again and again. After that another wastage i.e algae is used and found almost the same production rate in both cases. During the process, affecting parameters of biogas like pH, temperature, retentions time, feedstock's according to the capacity of biogas plant also studied and to find a relation between time, temperature and volume. Biogas can be produced by household wastages if people utilized in a proper manner.