It's not great to see more of them. They are an expensive dead end and will remain so.
The physics of 700 atmosphere pressures and the second smallest molecule in the universe means that compressors will fail regularly. The tolerances, materials and constant changes in pressure are extreme. It's like submarines capable of surviving 7 kilometers down into the Mariana Trench, but in a gas station staffed with college kids worried about their next test.
And other alternatives for hydrogen, such as liquid hydrogen, fail miserably as well. 20° above absolute zero with up to 17% losses after using a third of the energy in the hydrogen to liquify it.
If you are truly interested in all of the pathways for hydrogen for energy, all of which lead to dead end compromise spaces, this piece is a good one for you to read.
