this post was submitted on 17 Sep 2023
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Siemens quotes 80% for their electrolysers, fuel cells run at about 60%... in steel smelting if you squint right over 100% (reducing directly with electricity is possible, but less efficient in practice than going via hydrogen). Similar for chemical feedstock where "just use electricity bro" really isn't an option in the first place.
Precisely because of those uses hydrogen (and by extension ammonia) will be a massive energy carrier in the future anyway. And both, and definitely ammonia, doesn't self-discharge, or have cycle life limitations.