From a rarely mentioned, modest member of the renewable energy family to a headline-hogging clickbait, hydrogen has quickly turned from a prop to a star. There is a good reason for it: the most abundant chemical element in the universe can be harnessed to produce and store energy without fear of supply shortage. And it can even be produced entirely from renewable sources, which makes it near-perfect. Near, because green hydrogen comes at a cost. Several U.S. utilities have revealed big plans for green hydrogen, according to a Wall Street Journal…

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