Geothermal and Solar Energy Leasing in Imperial County

A geothermal resource developed since the 1980s

The area around the southern shore of the Salton Sea sits within the Salton Sea Known Geothermal Resource Area, a federally and state-recognized geothermal field where commercial power plants have operated since the 1980s, drawing on naturally occurring high-temperature brine reservoirs beneath the Imperial Valley. This is a long-established, mature energy sector for the region, not a recent development -- decades of operating geothermal plants have shaped local land use, infrastructure, and permitting expectations around this specific part of the county.

More recently, the same lithium-rich geothermal brine has drawn interest for mineral extraction alongside power generation, and this space continues to see active project proposals and development -- treat any specific claim about a particular company's project, capacity, or timeline as something to verify directly and currently, since this page's research pass had no live web access to confirm current project status.

The county's more recent shift toward utility-scale solar

Beyond geothermal, Imperial County's combination of consistently intense desert sunlight, large tracts of flat, sparsely populated land, and existing high-voltage transmission infrastructure built out to serve the geothermal sector has made it an attractive location for utility-scale solar development. This has been an active area of project development for well over a decade, and the pattern is durable even where specific project names and capacities are not something this page confirms.

If you're a landowner approached about a solar lease, the fact that Imperial County already has substantial existing generation and transmission infrastructure is worth understanding -- it typically makes interconnection more straightforward than in a county without an existing energy sector, which can affect how serious and how quickly a proposed project might actually proceed.

What to ask before signing a lease

For either geothermal or solar leasing, confirm directly with Imperial County Planning & Development Services what permitting and environmental review (including CEQA, discussed on the state hub) applies to the specific proposed project, and ask the developer directly about interconnection timeline, decommissioning obligations, and how lease payments are structured. Given the region's decades of geothermal development, also ask whether the parcel or nearby parcels have any existing geothermal leases, unitization agreements, or mineral-rights considerations that could affect a new solar lease -- subsurface and surface rights can be held separately here.