A recent series of studies by researchers at NETL and the University of California San Diego has explored the potential for storing hydrogen in the subsurface to aid the United States in achieving its climate change goals. The research, published in The Journal of Physical Chemistry, emphasized hydrogen as an emerging clean fuel option with applications in various sectors. While large-scale hydrogen storage will be essential for a carbon-free economy transition, not all regions have suitable geological structures for storage. The study focused on interactions of hydrogen with shale caprock in storage reservoirs, aiming to ensure storage security. Experiments with shale from south Texas showed that exposure to hydrogen alone did not significantly alter the shale, indicating minimal reactions. The researchers also noted changes in shale morphology when exposed to hydrogen and water, signifying potential impacts on long-term storage. Overall, the findings suggest a positive outlook for hydrogen storage, showcasing progress towards a clean energy future. The study authors highlighted the importance of continued research to establish safe geologic storage sites nationwide.