Green hydrogen: A win for developing countries?
Cost, transport pose problems
Hydrogen is used mainly to make chemicals such as fertiliser, and in oil refineries. Most hydrogen in the world today is made from natural gas or coal – methods associated with large carbon dioxide emissions. Developed countries are therefore looking to "green hydrogen" instead – produced using renewable electricity such as solar and wind power. Energy experts Rod Crompton and Bruce Young explain green hydrogen's potential benefits and challenges.
Global hydrogen demand reached 94 million tons in 2021, and contained energy equal to about 2.5% of global final energy consumption. Only about 0.1% of current global hydrogen prod
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