Hydrogen is stored underground in Texas salt formations at Clemens Dome, Moss Bluff, and Spindletop. The largest of them, Spindletop, was completed in 2017: ht

Hydrogen is stored underground in Texas salt formations at Clemens Dome, Moss Bluff, and Spindletop. The largest of them, Spindletop, was completed in 2017: https://www.airliquide.com/sites/airliquide.com/files/2017/01/03/usa-air-liquide-operates-the_world-s-largest-hydrogen-storage-facility.pdf https://www.airliquide.com/sites/airliquide.com/files/2017/0... This presentation says that the Spindletop hydrogen capacity is equivalent to ~120 GWh. https://ukccsrc.ac.uk/wp-content/uploads/2020/05/John-Williams_CCS-and-Hydrogen.pdf https://ukccsrc.ac.uk/wp-content/uploads/2020/05/John-Willia...