Hydrogen is having a moment today, as Toyota also unveiled its second generation, hydrogen-powered Mirai. However, many of the same limitations that apply to green hydrogen in vehicles apply equally to heating systems and appliances. For example, hydrogen electrolysis is only about 80 percent efficient, meaning that 20 percent of the electricity used to create it is wasted. If that electricity was instead used to power heat pump-based central heating, it could be more cost-effective than a hydrogen-powered furnace in many cases.
Still, the potential use of green hydrogen in the UK is considered important because 85 percent of homes are
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