What is biochemical methane potential (BMP)?
BMP is the maximum amount of methane that can be produced from a specific organic material under anaerobic conditions. It's measured in cubic meters of methane per ton of volatile solids (m³ CH4/ton VS). See also our Solar ROI Calculator.
How do total solids (%TS) and volatile solids (%VS) affect biogas production?
Total solids represent the dry matter content of feedstock, while volatile solids are the organic portion that can be digested. Higher VS content generally means more biogas potential, but the optimal TS content varies by feedstock type.
What types of feedstock produce the most biogas?
Energy crops like corn silage typically have the highest biogas yield, followed by food waste and animal manure. The actual production depends on the specific composition, freshness, and processing of the material.
How efficient are biogas plants at converting methane to electricity?
Modern biogas plants typically achieve 35-45% electrical efficiency when converting methane to electricity. Combined heat and power (CHP) systems can reach overall efficiencies of 80-90% when both electricity and heat are utilized.
What factors affect the economic viability of a biogas project?
Key factors include feedstock availability and cost, local electricity and heat prices, government incentives, plant size and efficiency, and the ability to utilize both electricity and heat output.
How much feedstock is needed for a viable biogas plant?
Generally, a minimum of 10,000-30,000 tons per year of organic feedstock is needed for commercial viability, though smaller plants can work for specific applications or with high-value feedstocks.
What are the environmental benefits of biogas production?
Biogas production reduces greenhouse gas emissions by capturing methane that would otherwise be released, provides renewable energy, and creates digestate that can be used as organic fertilizer.