Why do biogas and Compressed Biogas (CBG) plants fail even when they have sound designs, good equipment, and significant investment? In Why Biogas & CBG Plants Fail: How to Build One That Succeeds, Dr. Ashish Polkade examines the practical gaps that can prevent a plant from achieving its intended performance.Drawing on experience in microbiology, environmental biotechnology, waste management, and biogas technologies, the author explores the relationship between technical design, biological processes, plant operations, financial planning, and business decisions. The book explains why successful plant ownership requires more than installing equipment: it calls for patience, operational discipline, reliable data, suitable feedstock, documented procedures, and continuous learning.Organised into seven parts, the book takes readers through common causes of plant failure, the mindset required before construction, the science of digestion, day-to-day operations, financial viability, mentorship, and industry leadership. It also examines practical case studies and recurring mistakes that can lead to underperformance.Written for entrepreneurs, plant owners, investors, engineers, consultants, lenders, operators, and professionals in the biogas and CBG sector, this book offers a structured way to identify risks, ask better questions, and make more informed project decisions.The aim is to help readers understand the challenges before they become expensive problems and build biogas and CBG projects that are better planned, operated, and sustained.