Economics of Biogas Systems with Discussion of Analytic Techniques

摘要

This report discusses the following topics: The importance of economics to biogas systems; techniques for comparing costs and benefits; determination of costs and benefits in financial analysis; determination of costs and benefits in economic analysis; sensitivity analysis; financial analysis for a domestic biogas plant; financial analysis of a domestic plant with credit; financial analysis of income generating milling system-comparison of biogas and diesel; financial analysis of a biogas irrigation system and its comparison with a diesel one; and economic analysis of domestic biogas systems. The report found that it is already cost effective to use biogas systems in towns where fuelwood is generally expensive, but that subsidies are required to encourage use in rural areas for the general good to prevent denuding hillsides and deforestation and erosion.