Green hydrogen is being touted around the world as a clean energy solution to take the carbon out of high-emitting sectors like transport and industrial manufacturing.
The India-led International Solar Alliance launched the Green Hydrogen Innovation Centre earlier this year, and India itself approved $2.3 billion for the production, use and export of green hydrogen. Global cooperation on green hydrogen manufacturing and supply is expected to be discussed by G-20 leaders at this week’s summit in New Delhi.
Hydrogen is produced by separating that element from others in molecules where hydrogen occurs. For example, water — well known by its chemical symbol of H20, or two hydrogen atoms and one oxygen atom — can be split into those component atoms through electrolysis.
Hydrogen has been produced and used at scale for over a century, primarily to make fertilizers and plastics and to refine oil. It has mostly been produced using fossil fuels, especially natural gas.
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