Learn about primary energy sources and primary batteries in this Japanese lecture from Professor Takeshi Abe of Kyoto University's Department of Industrial Chemistry. Delivered at the NS Hall of Comprehensive Research Building 8 on July 28, 2018, this opening chapter of the Faculty of Engineering's public lecture series explores the fundamentals of energy storage technologies for renewable energy applications. Examine current developments and future prospects of storage batteries, with particular focus on primary energy systems and single-use battery technologies. Part of a comprehensive series on rechargeable batteries for renewable energy storage, this foundational segment establishes key concepts for understanding modern energy storage solutions.