Hydrogen burns completely cleanly, leaving behind nothing but water vapor, making it extremely attractive as an emissions-free fossil fuel alternative. While hydrogen receives a lot of lip service as a potential clean energy fuel solution for the global energy transition, the true picture is a bit more complicated. Hydrogen is only as clean as the fuel that was used to create it. In reality, there is not just hydrogen, but green hydrogen, blue hydrogen, and gray hydrogen, the distinguishing feature of each being the kind of energy production that…

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