Green hydrogen is a gaseous energy carrier produced through electrolysis. In this process, renewable electricity splits water (H₂O) into hydrogen and oxygen – without emissions.

In the debate about its sustainability, hydrogen is classified by colors. These colors indicate how it is produced and its climate impact. The production of conventional hydrogen usually generates a large amount of CO₂. For example, grey hydrogen is produced through steam reforming of fossil fuels such as natural gas. Green hydrogen, on the other hand, is the most climate-friendly variant. You can find more information about the different types of hydrogen and green hydrogen at WIWIN.