Green Hydrogen Production
Green hydrogen is produced when renewable energy is used to power water electrolysis to split water into hydrogen and oxygen.
Hydrogen can be produced using water electrolysis
- An electrical current is passed through water using two electrodes
- Hydrogen appears as gas bubbles at the cathode – where the electrons enter the water
- Oxygen appears as gas bubbles at the anode
When the electric current is generated by a renewable source – such as solar or wind – the hydrogen produced is referred to as green hydrogen. This is because there are no greenhouse emissions associated with the end to end process.