Jeremy Leggett is one of the world’s foremost experts on renewable power, energy policy and climate change. He worked as an oil geologist before become an environmental campaigner for Greenpeace. A prominent commentator around the world, Jeremy is executive chairman of the UK’s leading solar company, founding director of the world’s first private equity fund for renewable energy, and author of Half Gone: Oil, Gas, Hot Air and the Global Energy Crisis (titled Empty Tankin the US).