3 ms·
> Hydrogen can be much cheaper for (say) the last 10%, because (1) hydrogen has very low capital cost per unit of storage capacity, and (2) the efficiency hit o
by arcticbull 5y ago
> Hydrogen can be much cheaper for (say) the last 10%, because (1) hydrogen has very low capital cost per unit of storage capacity, and (2) the efficiency hit of going through hydrogen vs. batteries is less important when it's just 10% of the total.
Basically all hydrogen comes from fossil fuels. It's just natural gas with extra steps.
- pfdietz 5y agoThat's true right now, but that doesn't mean that hydrogen has to come from fossil fuels in the future (any more than most electrical power coming from fossil fuels right now means that that must also be the case in the future.) When describing hydrogen for energy storage in a 100% renewable grid, the hydrogen would be produced by electrolysis using renewable energy.