> I'm definitely no expert here, but... "Storing" electricity using H2 is relatively straightforward Never assume that anything is easy at scale. I remember w

> I'm definitely no expert here, but... "Storing" electricity using H2 is relatively straightforward Never assume that anything is easy at scale. I remember watching my high school chemistry teacher generate hydrogen and oxygen, and then burn the hydrogen. (And show that a match became more intense in pure oxygen.) But that doesn't mean it's "relatively straightforward" to do that on massive scale: It turns out the electrodes were a precious metal, and the water had to be fresh water. If you run electrolysis in seawater, you get chlorine gas instead of pure oxygen. Also, don't forget that it's very hard to compress hydrogen. Without going into the details: Compressing hydrogen takes energy, and keeping it cold (so it stays compressed) also takes energy. (It's hard to compress hydrogen to have the same energy density as propane.) And then, getting electricity back from hydrogen isn't 100% efficient. If you're not careful, the cost to make hydrogen, store it, and then generate electricity back can be more than what the electricity is worth. (FYI: Estimates for hydrogen cars put the electricity -> hydrogen -> electricity path at roughly 50% efficiency, compared to electricity -> battery -> electricity, which is > 90%. This generally implies that hydrogen will cost more, per mile, than electricity.)