Few people doubt the threat of climate change and the urgent need to conquer fossil fuel addiction. But can renewable sources of energy ever be sufficient to provide modern societies with a decent quality of life? This book is clear. They can. And it outlines the strategies to break the barriers to a 100% renewable world. Danny Chivers presents a compelling introduction to renewable technologies for non-technical readers (solar, wind, hydro, geothermal and ambient heat, wave and tidal, fuel crops, and energy from waste) and a roadmap to powering the world, not just sustainably, but democratically.