A proposed solar energy project in the California desert that caused intense friction between environmentalists and the developers of renewable energy has been shelved.

BrightSource Energy Inc. had planned a 5,130-acre solar power farm in a remote part of the Mojave Desert, on land previously intended for conservation. The company, based in Oakland, Calif., said Thursday that it was instead seeking an alternative site for the project.

The Wildlands Conservancy, a California environmental group, had tried to block the solar development, as had Senator Dianne Feinstein, Democrat of California, who proposed that the area become a national monument.

The land was donated by Wildlands to the Interior Department during the Clinton administration, with assurances from President Bill Clinton himself, the group says, that it would be protected in perpetuity. But the Energy Policy Act of 2005, a Bush administration initiative, opened the land to the development of solar projects.