For what's is worth, it's about 22.6 M cubic meters, a cube with a side of 2.83 km.
I didn't check if they are storing it as a compressed gas but they probably do. 1500 psi is about 100 bar. No more a cube but still a very big array of 28.3 m tall tanks.
I didn't check if they are storing it as a compressed gas but they probably do. 1500 psi is about 100 bar. No more a cube but still a very big array of 28.3 m tall tanks.