Green hydrogen, no panacea: Deep dive
Green hydrogen, produced with electrolysers to separate hydrogen from water, uses clean energy as a power source. Green hydrogen will not be with cost competitive with grey hydrogen for some time, perhaps not until 2030. Grey hydrogen, derived from steam reformation of natural gas, represents 98 percent of global hydrogen consumption, and is primarily used for industrial processes. To replace grey hydrogen with green hydrogen would require a doubling of global electricity generation with primarily solar and wind sources, pre-empting the use of renewables for electrical power. This would necessitate more use of natural gas for power production. And there are extraordinary inefficiencies and technological challenges for green hydrogen, while there is no shortage of affordable and efficient clean technologies alternatives. Nevertheless, US$30 billion has been committed to-date for green hydrogen through government stimulus packages. Is green hydrogen a fossil fuel industry trojan horse for gas derived hydrogen and the use of gas for electrical power?