This proceedings contains peer-reviewed papers from International Conference on Renewable and Clean Energy 2026 which was held in Osaka, Japan, March 6-8, 2026. Topics include integration of solar, wind, hydrogen, bioenergy, and emerging technologies with smart grids and microgrids, advanced energy storage, electric mobility, sustainable transport, and decarbonization strategies. A unique emphasis is placed on bridging the gap between research and industry by showcasing applied solutions, pilot projects, and pathways aligned with the UN Sustainable Development Goals (SDGs). By presenting high-quality research contributions from academia, industry, and policy experts, this book provides both theoretical insights and practical frameworks to accelerate the global clean energy transition. This collection is an invaluable resource for scientists, engineers, policymakers, and professionals dedicated to advancing renewable energy research and deployment, while inspiring the next generation of clean energy leaders.
