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 To find out more about Tortoise: - Download the Tortoise app - for a listening experience curated by our journalists - Subscribe to Tortoise+ on Apple Podcasts for early access and exclusive content - Become a member and get access to all of Tortoise's premium audio offerings and more If you want to get in touch with us directly about a story, or tell us more about the stories you want to hear about [email protected] Hosted on Acast. See acast.com/privacy for more information.