Geothermal Energy Leasing at The Geysers, Lake County

The largest geothermal field in the world, operating since the 1960s

The Geysers, a geothermal field in the Mayacamas Mountains straddling the Lake-Sonoma county line, is the largest geothermal energy field in the world by developed generating capacity. Commercial power production there began in the 1960s, making it one of the longest continuously operating renewable energy resources in the United States -- decades of steam-well drilling, plant construction, and transmission buildout have created a genuinely mature energy landscape in this part of the county, not a speculative or emerging one.

A meaningful share of the field's wells, pipelines, and associated infrastructure lie within Lake County's portion of the Mayacamas range. This long operating history means a parcel in or near The Geysers may already be affected by existing steam-gathering pipelines, well easements, or unitization agreements from decades of prior development, independent of any new lease being discussed.

What makes geothermal leasing different from wind or solar leasing

Geothermal energy development involves drilling wells to access underground steam or hot water resources, generally under a framework more similar to oil and gas leasing (involving subsurface resource rights, well spacing, and unitization among multiple landowners sharing a common underground reservoir) than to a straightforward surface lease for wind turbines or solar panels. If you're approached about a geothermal lease, the terms and legal structure are likely to differ meaningfully from a typical wind or solar lease, and warrant review by an attorney experienced specifically in geothermal or oil-and-gas-style leasing rather than one only familiar with surface energy leases.

What to ask before signing

Before signing any energy lease near The Geysers, ask the developer directly whether the lease involves subsurface geothermal rights, surface rights for wells and pipelines, or both, and how compensation is structured (per-acre payments, royalty on generated power, or both). Confirm with Lake County Community Development what permitting and environmental review would apply to a proposed project, and ask a title company whether the parcel already carries any existing geothermal lease, unitization agreement, or pipeline easement from the field's decades of prior development -- given how long The Geysers has been actively developed, this is a real possibility rather than a formality to skip.

It's also worth asking specifically about steam-field depletion and reinjection: because The Geysers has been producing continuously for decades, operators there have long relied on treated wastewater and other reinjection programs to help sustain reservoir pressure, and a parcel's proximity to reinjection wells versus production wells can affect both the terms offered and any surface-use restrictions attached to a lease. None of that is a reason to avoid a lease outright, but it is the kind of site-specific detail worth raising directly with the developer rather than assuming a standard, generic lease template applies here.