In recent years, solar energy has gone from the fringe to mainstream. Solar costs have dropped dramatically while solar installations have similarly increased. Solar still provides less than 1 percent of the nation’s power, and in states like Wyoming, it’s virtually nonexistent. But many predict solar power will play a much larger role in the future.

Among them is Philip Warburg, author of the recently-published book Harness the Sun: America’s Quest for a Solar-Powered Future. He joined Wyoming Public Radio’s energy reporter, Stephanie Joyce, to talk about what he learned on his tour of solar projects across America.