For the first time in nearly a decade, federal officials on Tuesday auctioned off leases for new geothermal energy projects in California - and all 13 parcels offered received bids. Dozens of buyers participated in the Bureau of Land Management's online sale of 10-year leases on 23,000 acres in Imperial, Lassen and Modoc counties. Geothermal is a growing source of energy that can produce clean electricity 24 hours a day, unlike wind and solar power.