Trendy: Keeping the lights on

 How much energy do we use and where does it come from? To achieve net zero carbon emissions politicians will have to make some difficult decisions about how we power our lives and the economy. John and Rachel talk to Professor Dieter Helm, Britain’s leading energy economist, to get a sense of the scale of the challenge.

Guest: Dieter Helm, professor of energy policy at New College, Oxford

Hosts: John Curtice and Rachel Wolf

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