Silicon, ordinarily associated with micro-chip production, is also a key component in solar panel manufacturing and as such, is crucial to the future of power for the planet. We hear from John Schaeffer, a solar power pioneer who at his shop and "solar living centre" in California, was one of the first to punt this eco-friendly form of power generation to his local community of sun-seeking Californian hippies - all to great effect. Richard Swanson of Sun Power and Lynn Jurich founder of Sunrun are busy developing ways to make solar panel manufacturing and distribution ever more cost efficient. While Barry Goldwater Jr., former Republican Congressman and one-time friend of Ronald Reagan, who is definitely not a hippie, has become a big solar power fan and is busy fighting its cause in the corridors of power. The sun, he says, will win the day.