Grey hydrogen

Energy - sustainability.

Hydrogen can potentially be burned very cleanly, producing only heat and water.

Grey hydrogen is hydrogen produced from natural gas, using steam-methane reformation.

This is a more polluting production process than green hydrogen, but generally considered to be less polluting than brown hydrogen.

See also

• Biofuel
• Brown hydrogen
• Carbon
• Corporate social responsibility
• Fossil fuel
• Green hydrogen
• Hydrogen
• Methane
• Peak demand
• Peak oil
• Renewables
• Sustainability

External link

• Hydrogen fuel basics - US Office of Energy Efficiency & Renewable Energy