Best Answer - Chosen by Voters
Ammonia.You need 10 kwh to produce 1 kg of ammonia from air and electric energy(Efficiency value is around 50% with new industrial processes as lca etc...).
1 kg of ammonia releases about 2 m3 of hydrogen so... 75% 3 Votes
Other Answers (1)
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you have the plan or you want, nothing is clear
25% 1 Vote