Revolutionizing Energy Conversion - Photoelectrochemical Technologies and Their Role in Sustainability offers a comprehensive exploration of the latest advancements in photoelectrochemical (PEC) technologies and microbial fuel cells (MFCs), two rapidly evolving fields at the forefront of sustainable energy research. This book presents a curated collection of cutting-edge studies that examine the innovative materials, processes, and applications driving the future of energy conversion. By harnessing the power of light and microbial activity, these technologies provide promising solutions to the global challenge of reducing our reliance on fossil fuels. Readers will gain insights into the potential of PEC systems for hydrogen production, solar energy harvesting, and smart energy storage, as well as the emerging role of MFCs in sustainable electricity generation. This book is an essential resource for researchers, engineers, and policymakers seeking to understand the transformative impact of these technologies on the energy landscape. With a focus on practical applications and sustainability, it highlights the potential of PEC and MFC technologies to revolutionize energy conversion, contributing to a cleaner, more sustainable future.