The article "Current Status and Economic Analysis of Green Hydrogen Energy Industry Chain" by Xinrong Yan, Wenguang Zheng, Yajuan Wei, and Zhaoqian Yan provides a comprehensive review of the technological and economic aspects of the green hydrogen energy industry chain, focusing on production, storage, transportation, and application. The authors highlight the importance of hydrogen as a strategic energy source in achieving carbon neutrality and discuss the current challenges and future trends in each segment of the industry. Hydrogen energy is crucial for addressing energy crises, climate change, and environmental protection. The global demand for hydrogen is increasing, with China being the largest consumer. The development of green hydrogen, produced from renewable energy sources, is essential for reducing carbon emissions. However, the cost and technology are major constraints. Alkaline Water Electrolysis (AWE) and Proton Exchange Membrane (PEM) technologies are commercially available for hydrogen production. AWE is mature but has high energy consumption and equipment costs. PEM technology is more advanced but is still expensive due to the use of precious metals in catalysts. The cost of hydrogen production is primarily influenced by electricity prices and equipment costs. Hydrogen storage and transportation are critical for balancing the industry chain. High-pressure gaseous hydrogen storage is the most common method, but it has safety and weight limitations. Low-temperature liquid hydrogen storage is more efficient but costly. Organic liquid hydrogen storage and solid-state hydrogen storage are emerging technologies with potential advantages in long-distance transportation and safety. Hydrogen applications are expanding beyond traditional industries. Hydrogen fuel cell vehicles are becoming more prevalent, and hydrogen is used in industrial processes such as ammonia and methanol synthesis. Hydrogen energy storage is also gaining traction, offering solutions for renewable energy integration and grid stability. Power-to-Gas (P2G) technology converts excess electricity into gas fuels, enhancing energy utilization and reducing emissions. Despite progress, challenges remain in large-scale commercialization. Key areas include reducing production costs, improving storage and transportation efficiency, and expanding application scenarios. The future of the green hydrogen industry is promising, driven by technological advancements and increasing demand for sustainable energy solutions. The article concludes by emphasizing the need for continued research and development to overcome current challenges and achieve the full potential of green hydrogen energy.The article "Current Status and Economic Analysis of Green Hydrogen Energy Industry Chain" by Xinrong Yan, Wenguang Zheng, Yajuan Wei, and Zhaoqian Yan provides a comprehensive review of the technological and economic aspects of the green hydrogen energy industry chain, focusing on production, storage, transportation, and application. The authors highlight the importance of hydrogen as a strategic energy source in achieving carbon neutrality and discuss the current challenges and future trends in each segment of the industry. Hydrogen energy is crucial for addressing energy crises, climate change, and environmental protection. The global demand for hydrogen is increasing, with China being the largest consumer. The development of green hydrogen, produced from renewable energy sources, is essential for reducing carbon emissions. However, the cost and technology are major constraints. Alkaline Water Electrolysis (AWE) and Proton Exchange Membrane (PEM) technologies are commercially available for hydrogen production. AWE is mature but has high energy consumption and equipment costs. PEM technology is more advanced but is still expensive due to the use of precious metals in catalysts. The cost of hydrogen production is primarily influenced by electricity prices and equipment costs. Hydrogen storage and transportation are critical for balancing the industry chain. High-pressure gaseous hydrogen storage is the most common method, but it has safety and weight limitations. Low-temperature liquid hydrogen storage is more efficient but costly. Organic liquid hydrogen storage and solid-state hydrogen storage are emerging technologies with potential advantages in long-distance transportation and safety. Hydrogen applications are expanding beyond traditional industries. Hydrogen fuel cell vehicles are becoming more prevalent, and hydrogen is used in industrial processes such as ammonia and methanol synthesis. Hydrogen energy storage is also gaining traction, offering solutions for renewable energy integration and grid stability. Power-to-Gas (P2G) technology converts excess electricity into gas fuels, enhancing energy utilization and reducing emissions. Despite progress, challenges remain in large-scale commercialization. Key areas include reducing production costs, improving storage and transportation efficiency, and expanding application scenarios. The future of the green hydrogen industry is promising, driven by technological advancements and increasing demand for sustainable energy solutions. The article concludes by emphasizing the need for continued research and development to overcome current challenges and achieve the full potential of green hydrogen energy.