As demand for electricity grows, does the world have enough to keep up with demand? From electric vehicles to AI, and our growing love of gadgets the move away from fossil fuels means there’s an increasing strain on the electricity system, so where will our power come from? The head of the International Energy Agency, Dr Fatih Birol, explains why solar power is leading the charge against climate change. Meanwhile the head of the organisation which represents 3,500 European power firms, Eurelectric’s Kristian Ruby, explains the challenges of finding tens of billions of dollars to keep our power grids working. Plus, Ben Thompson speaks to the boss of the billion dollar start-up, Radia founder Mark Lundstrom, about his plan to build the world's biggest plane to deliver giant turbine blades to some of the most remote places on earth.