So they are still quite inefficient even if accept your efficiency range. Then there's the high costs associated with the catalysts or membranes, etc depending

So they are still quite inefficient even if accept your efficiency range. Then there's the high costs associated with the catalysts or membranes, etc depending on what technology you use. We're not even using pumped storage nowhere near enough where possible and it's the vast majority of all utility scale storage but the amount of people that somehow champion power to gas as this grand thing that's anywhere close to being able to compete with it at scale is staggering.