Hydrogen can replace fossil fuels in essentially any area. It can be processed into fuel for airplanes and ships. It can be burned to generate electricity, power cars or facilitate industrial processes that require a large amount of heat. Factors related to the storage, transport and safety of hydrogen, as well as how it compares economically with other fossil fuel replacements, will determine where it becomes common.
Like natural gas and oil products, hydrogen can be burned to produce heat or electricity. Unlike other fuels that produce CO2 when they combust, hydrogen reacts with oxygen in the air to produce H2O — good old water.
For hydrogen to serve as a climate solution rather than a problem, it must be produced using renewable energy or fossil fuels offset by carbon capture and storage systems. At present, producing green hydrogen from renewable energy sources is expensive, which is why 95% of hydrogen globally is produced from non-renewable fossil sources.
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