Core Viewpoint - Geological hydrogen storage is currently the most feasible and prioritized method for large-scale hydrogen storage in China, with steady progress being made in this area [4][6]. Group 1: Geological Hydrogen Storage - Geological hydrogen storage is essential for meeting the hydrogen energy demand at a large scale, particularly when production reaches millions of tons [6][10]. - Successful cases of salt cavern hydrogen storage have been established in Pingdingshan, Henan, and Daye, Hubei, showcasing the potential of geological storage methods [7][8]. Group 2: Project Details - The Pingdingshan project plans to store 1.5 million cubic meters of hydrogen, utilizing hydrogen as a byproduct from a chemical plant [7]. - The Daye project, with a total investment of 3.437 billion yuan, aims to produce 1,800 tons of green hydrogen annually and features a full-cycle application model [7][8]. Group 3: Challenges and Considerations - There are significant challenges in the development of geological hydrogen storage, including misconceptions about hydrogen safety and the need for improved regulations and standards [10][11]. - The industry must address the knowledge gap regarding hydrogen as an energy source and ensure rigorous validation before launching new projects to avoid potential risks [11][12].