Green Hydrogen VS The Rest
Hydrogen can be produced from various sources and is commonly referred to by different colours:
BROWN
Produced from coal (brown or lignite) ~71% of total
GREY
Produced from steam methane reforming ~27% of total
BLUE
Produced from steam methane reforming paired with carbon capture and storage (CCS)
GREEN
Hydrogen is produced exclusively from renewable electricity & produces zero carbon emissions
Green Hydrogen VS Blue Hydrogen
How Green Hydrogen is produced?
Currently, about 96% of hydrogen globally is produced from hydrocarbons and the remaining 4% is green hydrogen produced from renewable electricity via electrolysis.
Electrolysis is an electrochemical reaction that uses electricity to split molecules into their constituent atoms
In hydrogen production, electrolysis occurs in a device called an electrolyser, which splits water into hydrogen and oxygen
Hydrogen produced via electrolysis is high purity, around 99.999% but hydrogen produced via fossil fuels has high levels of impurity and requires treatment before use.
