Radical sustainability freaks are insisting that if hydrogen fuel is endorsed by the German government as the energy source of the future, only the “green” variant will be acceptable. “Gray” hydrogen generated with power from natural gas and “blue” hydrogen generated from carbon capture are opposed. “Green” hydrogen is generated with the use of power generated from sunshine and wind.
But solar and wind alone cannot provide enough power for producing green hydrogen, because the demand is huge: A Thyssen survey found that to decarbonize the steel industry—i.e., replace fossil fuels with hydrogen—would require 600 terawatts in power. That amount is the national power requirement for all of Germany. And steel, of course, is just one sector of the industry.