Fast Company: Sunlight is the world’s most plentiful resource. That is, of course, why the United States has scrambled in recent years to supplant dirty, nonrenewable energy sources with ambitious solar projects. Below, we look at some of the most exciting solar projects–both existing and planned–in the country. 1. Solar Energy Generating Systems Located in California’s Mojave desert, the Solar Energy Generating Systems (SEGS) plant is the largest active solar energy facility in the world. …