I guess this means that the goal is to use hydrogen as a battery of sorts, sinking excess hydro and other power into the electrolysis process. I haven't done en

I guess this means that the goal is to use hydrogen as a battery of sorts, sinking excess hydro and other power into the electrolysis process. I haven't done enough reading about the power efficiency of hydrogen, but if there's enough energy to reasonably provide daytime capacity augmentation, I imagine the hydrogen -> water -> hydrogen process can be a relatively closed system, not requiring constant introduction of fresh water as the H2 + O2 are recombined and then split apart again.