Exploring the hydrogen color spectrum: focus on green hydrogen production and applications

Transitioning to the hydrogen economy is essential to reduce greenhouse gas emissions and address

the challenges of climate change. This presentation analyses the various hydrogen production

methods, typically classified as hydrogen colors, that reflect the source, the technology, and the

carbon emissions associated with each method. Although this "hydrogen color spectrum" includes

grey, blue, and turquoise hydrogen, the focus is on green hydrogen, produced through water

electrolysis powered by renewable energy sources such as wind and solar.

We will discuss the role of electrolyzers in splitting water into hydrogen and oxygen, presenting the

commercially available types. We will also emphasize the growing importance of green hydrogen in

decarbonizing sectors that are hard to electrify, such as heavy industry and mobility, and present

several applications.