![](https://image.tmdb.org/t/p/w500/zirVpq9PMBvkbYGM6d5tKuxoZeG.jpg)
Justin Rowlatt, Michelle Ackerley and Dr Tara Shine investigate if it will be possible to heat British homes with green alternatives to boilers and build an entirely low-carbon electricity network before the government's net zero target of 2050.
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