> then compressing the H2 to 700 bars consumes 30% of the stored energy, then you must add distribution and transport You don't need any of that for grid stora

> then compressing the H2 to 700 bars consumes 30% of the stored energy, then you must add distribution and transport You don't need any of that for grid storage. You can pump it down into a salt cavern in gaseous form (previously used for natural gas storage) and pump it back for on-site power generation when the grid needs it.