What's the sunny equivalent of "when it rains, it pours"? Because that's what's happening in Southern California, as yet another massive solar plant cleared the permitting process Monday.

This time, it's the Blythe Solar Power Plant, backed by German company Solar Millennium and planned for more than 7,000 acres in Riverside County. The project would be the largest solar installation in the world, doubling the amount of solar electricity the U.S. can produce.

The Blythe installation is the sixth in recent months to be approved for public land. Several proposed solar plants have been fast-tracked through the permitting process as they race to meet the December deadline for federal stimulus funds. One of those, the Ivanpah Solar Electric Generating System, is breaking ground Wednesday near Primm, Nev.

Winning final clearance to start construction from the Bureau of Land Management on Monday, after getting the go-ahead from California authorities last month, makes Blythe the first proposal of its kind to be approved for federal public land.