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Electrolyser technologies: PEM vs Alkaline electrolysis

Electrolyser technologies: PEM vs Alkaline electrolysis

So you know that green hydrogen is the ultimate shade of this clean fuel that can truly and deeply decarbonise industry and society. The costs have been dramatically improved in recent years alongside the ever-growing renewable energy assets operating in developed economies, its scale is actively being ramped up today, and there is now little doubt over the overwhelmingly positive impact that green hydrogen will have for us all.

You know too that electrolysers are one of the key building blocks of this green hydrogen society, cited as such by the International Energy Agency (IEA) and at the heart of all green hydrogen policies and strategies.

But do you know the difference between the different types of electrolysers? Do you know which type of electrolyser technology is best suited to your needs, or what the characteristics of each are?

Here we take a look at two of the most dominant means of electrolysis in the market today, proton exchange membrane (PEM) electrolysis and alkaline electrolysis (AE), with the latter having been around for over a century.

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