Core Viewpoint - Hydrogen energy is increasingly recognized as a crucial clean energy carrier in the context of China's "dual carbon" goals, supported by over 560 policies aimed at fostering the hydrogen industry [6][12]. Group 1: Hydrogen Energy Development - The establishment of hydrogen energy's status as an energy source in China's Energy Law has laid a solid foundation for the industry's growth [6]. - Hydrogen storage is highlighted as an efficient and environmentally friendly long-term energy storage solution, particularly suitable for large-scale and prolonged energy storage needs [6]. - The Ministry of Industry and Information Technology's action plan emphasizes the need for advanced hydrogen storage technologies to facilitate the green transition of the energy system [6]. Group 2: Hydrogen Storage Process - The narrow definition of hydrogen storage involves the "electric-hydrogen-electric" process, which includes water electrolysis to produce hydrogen, storage of hydrogen, and conversion back to electricity when needed [7][8][9]. - The broader concept of hydrogen storage encompasses "Power-to-X," which refers to converting electrical energy into various energy carriers, including hydrogen, ammonia, and alcohols for diverse applications [10]. Group 3: Applications and Efficiency - Hydrogen storage is applicable in transportation, industrial production, and building heating, providing zero-emission solutions and reducing carbon footprints in various sectors [10]. - Despite its unique advantages for large-scale and long-duration storage, hydrogen storage has a relatively low efficiency, with a conversion rate of about 35%, meaning three units of electricity are needed to produce one unit of usable energy [10]. Group 4: Case Studies and Innovations - Guohong Hydrogen Energy has implemented various projects demonstrating hydrogen storage applications, such as a 10kW fuel cell system replacing diesel generators in communication bases, and a 100kW fuel cell cogeneration system in a health innovation park [11][12]. - The company has also pioneered an industrial solid waste hydrogen generation project, showcasing a revolutionary solution for off-grid power supply with zero noise and emissions [11]. - In large-scale applications, Guohong's systems have achieved over 90% energy utilization efficiency, providing zero-carbon energy to significant venues like the Shaanxi Provincial Sports Village [12]. Group 5: Future Outlook - The combination of favorable policies, technological advancements, and successful case studies indicates a promising future for hydrogen storage [12]. - Guohong Hydrogen Energy aims to continue innovating and expanding its applications, contributing to the energy transition and leading the hydrogen era towards a zero-carbon future [12].