Solar Trust of Americas, which is building the facility near Blythe, announced it will hold a groundbreaking ceremony on Friday.
President Barack Obama's goal of generating 80 percent of the nation's electricity from clean energy sources by 2035 has led to numerous projects proposed on millions of acres of federally owned lands, most in Western states. The administration has put some of the most promising projects on the fast track for permitting, including the project in Blythe.
When complete, the project is expected to generate enough electricity to power more than 300,000 homes annually in Southern California.
Blythe is just west of the Colorado River and the Arizona state line.