Welcome to Geothermal Resources
The Geothermal Section oversees the drilling, operation, maintenance, plugging, and abandonment of geothermal wells on state and private lands to ensure public safety and protect underground and surface waters.
2012 Outstanding Field and Lease Facility Maintenance Award
The Division of Oil, Gas and, Geothermal Resources (Division) is pleased to announce the following Outstanding Field and Lease Facility Maintenance Award recipients for 2012:
- Occidental of Elk Hills, Inc. (Elk Hills oil field). Lease: "36S"
- Plains Exploration & Production Company (PXP). (Beverly Hills oil field). Lease: "Packard Drill Site"
- CPN Wild Horse Geothermal, LLC. (The Geysers Geothermal field). Lease: "Prati"
The Division congratulates these operators on being selected for these awards.
Operator Submittal of Well Records
Geothermal well records must include complete and accurate information concerning the well location and the cementing details. For more information please see the Notice to Operators (click here to view), issued May 6, 2011.
Lease Award Nominations
DOGGR has revised its annual lease award program. The award nomination process is now open to industry operators and nominees will now compete for statewide recognition. DOGGR management will still select the award winners, but will use more stringent eligibility and judging criteria. Click here for revised program information and application materials. Applications for the 2013 award are due October 1, 2013.
DOGGR Releases Version 2.0 of the Online Mapping System (DOMS)
DOGGR is pleased to announce the release of a new and faster version of our online mapping system: DOMS 2.0. This version features a new look and feel, aerial base imagery, and runs much faster. DOMS 2.0 can be seen by clicking here or by clicking on the DOMS link on the Geothermal Maps page.
SB 571 Signed by Governor
Senate Bill 571, introduced by Senator Maldonado, was approved by Governor Schwarzenegger on October 11, 2009. The bill adds Section 3724.32 to the Public Resources Code and reads as follows:
3724.32 When an operator fails to pay a civil penalty imposed pursuant to Section 3754.5, comply with an order of the supervisor issued pursuant to this chapter, or pay a charge assessed under Section 3724.5, the supervisor may deny approval of the operator's proposed well operations until the operator pays the civil penalty, complies with the order of the supervisor, or pays the charge assessed under Section 3724.5.
Coproduction of Geothermal Power from Oil and Gas Fields in California: Hot water produced from oil and gas wells can be used to generate geothermal power under certain temperature and flow conditions. This report provides links to technical reports about produced water and reservoir temperatures from oil and gas fields in California. Links to electric logs and to information on temperature gradients in sedimentary basins within the State are also provided.
The Geothermal Hot Line
Published by the Division of Oil, Gas, & Geothermal Resources from 1971 through 1996, the Geothermal Hot Line has been scanned and is available online. To access the issues of Geothermal Hot Line, click here.
Geothermal Section oversees the drilling, operation, maintenance, plugging, and abandonment of geothermal wells on state and private lands to ensure public safety and protect underground and surface waters.
California is the United States' largest generator of electricity from geothermal energy. In 2012, California received nearly 4.5 percent of its electrical energy from geothermal resources (about 13,000 Gigawatt-hours). The state has over 650 active, high-temperature geothermal wells (with fluids over 212° F) and 280 injection wells.
Kids' and Educators' Pages
Games, puzzles, and information about geothermal resources in California. Meet Steamer, the engineering dog, and Electra, the electricity cat.
Geothermal District Contacts
District staff in Sacramento, El Centro, and Santa Rosa answer questions about geothermal resources. Staff members permit wells, and make field inspections.
Geothermal Field Maps
View and download the large-scale map of California’s geothermal fields and digitized field maps.