A look at some of the stories behind the massive sums of an energy revolution.

My guest is David Volts, energy journalist and writer of the Volts newsletter and host of the volts podcast. After Catherine Sheridan's H2 Oh! last week, this is the second of what looks to be an inadvertent energy trilogy. (Or enilogy or trinergy. No doubt that's been trademarked already)

David Roberts has been writing and talking for years about the challenges but also the incredibly cool stuff happening in the biggest equation the world has ever seen: The terrajoules of energy that the planet uses every year: how to make it from electrons moving around instead of just burning stuff in the ground.

we talk about carbon fibre electric wires, magic cement, stone batteries, black mass and why changing the energy system of an entire planet sounds like a crazy idea but it just might work