Earlier this year, the Ivanpah Solar Electric Generating System opened up in the Southern California desert near the Nevada border.
It did so with great promise - operators said it would produce enough electricity to power a city of 140,000 homes.
But things haven't quite gone according to plan.
According to the U.S. Department of Energy, Ivanpah is generating only about half as much electricity as expected for the year.
Joining Take Two to explain what's happening is Chris Clarke, who reports on environmental issues for KCET.