As in other countries, many people in the UK heat their homes with natural gas, which burns cleaner than oil or coal and thus has been the go-to fuel. In recent years, it has accounted for more than 80% of all the energy consumed on a winter day in Britain, for heat, electricity, and transportation. Nonetheless, even cleaner fuels are needed to meet the UK’s goals of cutting carbon-dioxide emissions under the UK’s 2008 Climate
The biggest market for hydrogen as a clean fuel may not be cars—but homes
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