Why solar power is taking over the world
By Stephanie Pappas , Scientific American. Excerpt: Forty-seven years ago U.S. President Jimmy Carter stood grinning in front of a set of 32 bulky solar panels. It was 1979, and the oil crisis had sent fuel costs skyrocketing. Carter, in response, was making the White House an example of conservation and alternative energy. “Solar energy will not pollute our air or water,” he said. “We will not run short of it. No one can ever embargo the sun or interrupt its delivery to us.” ...Even before the U.S.-Iran conflict closed the Strait of Hormuz for months, causing fossil-fuel prices to spike, solar was soaring. Last year the world added 600 terawatt-hours of solar photovoltaic generation, enough to power Canada for a year. It was the first time that a renewable source took the top slot in global supply growth. It was also the largest single-year increase for any electricity-generation technology, according to the International Energy Agency (IEA). ...Solar Is Now the Cheapest Way to Produc...