What's the Difference Between Gray, Blue, and Green Hydrogen?
As the world looks to new and more sustainable forms of energy, hydrogen has been on a steady climb to the top. This alternative fuel, when consumed in a fuel cell system, only produces water as its byproduct. In mobility applications, this means hydrogen-powered vehicles emit water vapor from their tailpipes instead of greenhouse gases that are harmful to the environment. But does that mean zero-emissions motoring from hydrogen has no carbon footprint?