Book excerpt: Bionanotechnology Towards Green Energy explains the role of bionanotechnology in the next generation technologies of green energy from an interdisciplinary and sustainability perspective. Chapters cover different roles of bionanotechnology such as applications of bio-nano enabled materials/coatings, scaling-up of green energy production, design and synthesis of bio-inspired nanomaterials and their applications, bio-nanofluid-based photovoltaic thermal systems, the use of bio-templated and biomimetic materials, and so forth. It focuses on waste-to-energy conversion and fixing intricate environmental issues. Key features: Provides detailed coverage of green energy production through bionanotechnological intervention Reviews future research needs in bionanotechnology in the green energy sector and scientific challenges in the mitigation of energy crises Deals with cutting-edge research on microbial synergism in biohydrogen production and storage Discusses the fabrication of bio-nano/hybrid electrode materials for supercapacitors and energy storage devices Includes extensive illustrations, case studies, summary tables, and up-to-date references This book is aimed at researchers and professionals in bionanotechnology, energy sciences, and environmental engineering.