Edit: Thanks for all the answers and the effort to answer this trendy “sciency” question.
In: 3
Free hydrogen does not exist on earth in any appreciable amount. There aren’t pockets of hydrogen you can exploit. It’s an energy storage medium like a battery, not an energy source like gas. You can make it chemically, but the easiest way is electrolyzing water- passing a current through it to dump in energy, overpowering and breaking the bonds between atoms and leaving you with oxygen and hydrogen in the proportion you expect from an element made of two hydrogen atoms and one oxygen atom. You can then later re-react the hydrogen with oxygen, getting you most of your energy back and leaving the original water as the waste product.
Whatever energy you use to split the water can be green or not, and that’s what they’re talking about.
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