Hydrogen production is a key piece of the decarbonization puzzle, but not all hydrogen is created equal. This article breaks down the major production methods from steam methane reforming to electrolysis and explains the color codes used to label hydrogen based on emissions. It covers gray, blue, and green hydrogen along with emerging types like pink and turquoise. The piece also compares four types of electrolyzers: AEM, PEM, alkaline, and solid oxide. It highlights how electrolysis powered by renewable energy can produce near-zero emission hydrogen for hard to electrify sectors like steel and cement. The article includes a focus on Power to Hydrogen's AEM electrolyzer technology as one example of current innovation in the space.
