Skip to content
Triumph Horizon
Log in
Sustainability glossary

Grey hydrogen

Hydrogen made from natural gas, usually by steam methane reforming, with the CO₂ vented to the atmosphere. It is the default at most refineries. It emits about 10 to 14 kg CO₂e per kg of hydrogen.

Used in these articles

Related terms

Hydrogen and ammonia

Related coverage

Subscribers read the desk company and technology reports on the names it covers, including new reports before they are published on datadeep.tech.