How is hydrogen an energy source?

You do electrolysis to produce hydrogen, then combust it, driven into water.

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Pisciatto1 · 26-30, M

Correct. When hydrogen is combusted, that is the energy source. The question is: is it worth all the energy that electrolysis needs to make hydrogen from water worth it???

OriginalDumbMan · 36-40

@Pisciatto1 ot is just energy conversion.