There has been a trend toward decarbonization and carbon neutrality and the development of energy production technologies that do not generate carbon dioxide is being promoted. One such production technology is green hydrogen production. Specifically，possible measures include supplying the electricity used for hydrogen production from renewable energy sources such as offshore wind power，and filtering seawater to obtain the pure water necessary for hydrogen production in order to avoid competition with domestic water supplies.
Yabuta et al. (2025) studied this question.