Technology hub
Hydrogen
How green hydrogen is made, where fuel cells make sense, and the role of hydrogen in shipping, aviation and heavy industry.
3 explainers
Explainers
Hydrogen ferries: which ones sail today and what holds them back
Yes, hydrogen ferries are sailing today, but only a handful of them, and the best-known examples entered service two to three years after delivery. If you are…
Hydrogen planes: where fuel cell aviation stands
Hydrogen planes are not yet a commercial reality. As of October 2026, no hydrogen aircraft has been certified by an aviation authority, and none is carrying…
Green hydrogen: how it is made and what the UK plans to use it for
Green hydrogen is made by splitting water into hydrogen and oxygen using electricity from renewable sources such as wind or solar. This process is called…
Key terms
Glossary →- Electrolyser
- A device that uses electricity to split water into hydrogen and oxygen; powered by renewable electricity, it produces green hydrogen.
- Hydrogen colours (green, blue, grey…)
- An informal colour code describing how hydrogen was produced, from grey hydrogen made from unabated natural gas to green hydrogen made with renewable electricity.