The Ivanpah Solar Electric Generating System, expected to be the largest solar thermal project in the world when it comes online next year, reached the halfway mark of construction in August. Last week at Solar Power International in Orlando, Fla., I sat down with Jim Ivany, president of Bechtel's Renewable Power business, to discuss the company's work on the project and the future of Concentrating Solar Power (CSP) in the U.S.