SAN FRANCISCO — Federal officials on Friday approved a plan that sets aside 445 square miles of public land for the development of large-scale solar power plants, cementing a new government approach to renewable energy development in the West after years of delays and false starts.

ROACH DRY LAKE, Nev. (AP) — Not a light bulb's worth of solar electricity has been produced on the millions of acres of public desert set aside for it. Not one project to build glimmering solar farms has even broken ground.