This webpage contains the list of Geothermal Grant and Loan Program projects and reports. 

As a state agency, The Energy Commission is responsible for complying with federal and state laws forbidding discrimination against persons with disabilities, including accessibility of their electronic and information technology (California Government Code section 11546.7)

If you would like to request a report without publication link, please contact geothermal@energy.ca.gov

Contract NumberProject Name 
500-17-004Geothermal Well Plugging and Abandonment Tech Support 
GEO-16-006
Well To Wheels Lithium Design 
GEO-16-005
Geothermal Resource Confirmation Drilling 
GEO-16-004
Demonstration Of a Novel Water-Free Method of Extracting Energy from Hot Dry Rock 
GEO-16-003
Application Of Surface Deformation and Induced Seismicity to Geothermal Operation and Exploration 
GEO-16-002
Golden Haven Injection Well 
GEO-16-001
Modoc Joint Unified School District Geothermal Expansion 
GEO-14-004
Expansion of the Groundwater Monitoring Program for the Casa Diablo IV Geothermal Development Project 
GEO-14-003
Geothermal Exploration, Economic Feasibility and Market Analysis and Distributed Energy Resource Demonstration 
GEO-14-002
Alturas School And Swimming Pool Geothermal Heating Project 
GEO-14-001
Surveying And Monitoring of Geothermal Operations Using a Fiber Optic Borehole Seismic Vector Sensor Array 
GEO-10-003
Exploration Drilling and Assessment of Wilbur Hot Springs, Colusa County, California 
GEO-10-001
Surface Deformation Baseline in Imperial Valley from Satellite Radar Interferometry (InSAR) 
GEO-07-007
Project Negatherm For Ground Source Heat Pumps: Improving the Geothermal Borehole Drilling Environment in California 
GEO-07-006
Reservoir Confirmation of The Buckeye Power Plant Area, Wildhorse State 36 Confirmation Well, Northwest Geysers, Sonoma Co. 
GEO-07-001
Canby Development Project 
GEO-05-005
Structuring A Geothermal Heating District for Mammoth Lakes 
GEO-05-004
Application Of InSAR to The Monitoring and Mitigation of Surface Substance from Increased Geothermal Development in the Imperial Valley CA. 
GEO-05-002
Geothermal Exploration Drilling, Assessment, & Demonstration in Indian Country 
GEO-04-007
Drilling And Testing of An Exploratory Well, Truckhaven Geothermal Area, Imperial County, CA 
GEO-04-006
Geothermal Training Facility 
GEO-04-005
Mercury Filtration Systems Installation 
GEO-04-003
Little Geysers Creek Arched Culvert 
GEO-04-002
City Of Paso Robles Resource Assessment and Feasible Use Study 
GEO-02-007
Mt Survey for Resource Assessment and Environmental Mitigation in The Glass Mountain KGRA 
GEO-02-006
Geothermal HVAC Conversion 
GEO-02-005
Geothermal Exploration Under the Salton Sea Using Marine Magnetotellurics 
GEO-02-002
Fluid Inclusion Stratigraphy: A New Inexpensive Method for Geothermal Reservoir Assessment 
GEO-02-001
Dual Horizontally Completed Injection Well to Enhance Geothermal Production at The Geysers 
GEO-00-003
Integrated High Resolution Microearthquake Analysis and Monitoring for Optimizing Steam Production at The Geysers Geothermal Field, California 
GEO-00-002
Drill And Complete Fourmile Hill Exploration Well 88A-28 To Confirm the Existence of a Commercial Geothermal Resource 
GEO-00-001
Rhyolite Plateau Geothermal Exploration 
GEO-99-007
Support The Southeast Geysers Effluent Pipeline Project for Secondary Wastewater Steamfield Injection (Phase II) 
GEO-99-006
Optimization Of Steam Field Management at The Aidlin Geothermal Project, Sonoma County, CA 
GEO-99-005
I’SOT District Heating System Using a Geothermal Resource 
GEO-99-001
Undertake Mineral Recovery from Geothermal Brines in The Salton Sea 
GEO-98-001
Santa Rosa Geysers Recharge Project 
500-97-034
Development Of an Extended Logging Tool for Geothermal Exploration and Field Development (Funded by Pier-Electric Research) 
GEO-97-001
Deepen The Long Valley Magma Exploration Well From 7,500 Feet to A Total Depth Of 12,000 Feet - Phase III 
GEO-96-002
Plug And Abandon Wells in The Geysers Unit 15 Steamfield 
GEO-96-001
Conduct Geothermal Reservoir Exploration by Fault Zone Guided Wave and Shear Wave Splitting Tomography (County of Mono) 
GEO-95-002
Conduct Geothermal Heat Pump Training (Truckee-Donner PUD) 
912-93-003
Monitor And Analyze Geothermal Heat Pump Installations (SMUD And Truckee-Donner PUD) 
912-93-002
Develop And Implement a Plan to Evaluate the Geothermal Resources Used for District Heating System (San Bernardino Municipal Water Department) 
912-93-001
Operation And Performance of a Biphase Turbine Power Plant at The Cerro Prieto Geothermal Field 
912-91-002
Complete Geothermal Resource Assessment - Phase II Including Feasibility Study and Drilling (City of Twentynine Palms) 
912-91-001
Continue District Heating System by Drilling an Injection Well for Fluid Disposal and Extend Pipeline (Town of Mammoth Lakes) 
912-90-004
Purchase Fire Truck and Train for Hazardous Material Emergencies 
912-90-001
Complete Geysers Water Assessment and Research Program 
912-89-006
Complete Resource Exploration for Bridgeport Geothermal District Heating System (Mono County Energy Management Department) 
912-89-005
Secure Property to Continue Operation of Existing Air Monitoring Station as A Permanent Facility (No. Sonoma County APCD) 
912-89-002
Expand Geothermal Agricultural Industrial Center (Phase II) For Production and Irrigation Systems (County of Lake) 
912-89-001
Conduct Geothermal Resource Assessment and Exploratory Drilling Program (City of Colton) 
912-88-009
Conduct Resource Exploration; Complete Feasibility/Market Analyses for Direct-Use Heating System; Drill and Test a Well (Town of Mammoth Lakes) 
912-88-008
Expand District Heating System into Two Areas of High User Demand and Retrofit Five Or More Facilities (City of Susanville) 
912-88-007
Design And Install a System to Monitor and Evaluate Geothermal Space and Hot Water Systems at Surprise Valley Hospital 
912-88-006
Improve A 1-1/4 Mile Section of The Healdsburg- Geysers Road Necessitated by Geothermal Development 
912-88-005
Develop Monitoring Network to Establish Baseline Data for The Hydrologic System in The Long Valley Caldera 
912-88-002
Monitor Pieta Creek Basin and Streams Monitoring to Establish Baseline Data to Assess Effects of Geothermal Development 
912-88-001
Install Modification to The Geothermal Space and Water Heating Project (Indian Valley Hospital District) 
912-87-008
Conduct Resource Assessment and Temperature-Gradient Drilling in Kern River Valley 
912-87-007 
Operational Management of Air Resources (OMAR)  
912-87-006 Final Report
Conduct Resource Assessment and Prepare Feasibility Study for District Heating System (City of Loma Linda) 
912-87-006 Administrative Report
Conduct Resource Assessment and Prepare Feasibility Study for District Heating System (City of Loma Linda) 
912-87-005
Conduct Lower Sonoma Valley Geothermal Resource Assessment 
912-87-004 Final Report
Geothermal Heating System Retrofit Modoc Joint Unified School District Alturas, California 
912-87-004 Administrative Report
Geothermal Heating System Retrofit Modoc Joint Unified School District Alturas, California 
912-87-003 
Cumulative Geothermal Noise Study  
912-87-002
Conduct A Resources Assessment at White Sulfur Springs 
912-87-001 
Geysers-Calistoga KGRA Fish Populations and Element Loads: Final Administrative Report 
912-86-019 
Geothermal Project Monitoring/Evaluation: Indian Springs School, Big Bend, CA and Surprise Valley Schools, Cedarville, CA 
912-86-017 
Water Use in The Geysers: Assessing Future Needs: Administrative Report 
912-86-016
Complete Geothermal Resource Assessment Project and Create District Heating System Management Position 
912-86-015
Complete Geothermal System Expansion to City Shop; Add BTU Meters and A Test Bench (City of Susanville) 
912-86-012
Design/Install Geothermal Heating System in The County Jail and Sheriff's Building (County of San Bernardino) 
912-86-011 
Long Valley and Coso KGRA Baseline Data and Permanent Monitoring Network  
912-86-010 
Serpentine Seedmix Project: Final Administrative Report 
912-86-009 
Butts Canyon Groundwater Monitoring Program 
912-86-007
Undertake Calistoga Geothermal Development Program (Phase 1) 
912-86-006
Complete Geothermal Resource Assessment of Long Valley Area 
912-86-005
Complete Geothermal Resource Assessment for The City of Twentynine Palms Originally Awarded to County of San Bernardino 
912-86-004
Complete Assessment of Geothermal Resources Beneath City of Alturas 
912-86-003 
Napa County Fire Department  
912-86-002 
Undertake Monitoring; Confirm Permit Compliance; And Acquire a Vehicle  
912-86-001Kelsey Creek Air Monitoring: Final Report 
912-85-023
Complete Analysis of Elements and Parasites of Selected Geysers Wildlife 
912-85-020
Complete Geothermal Resource and Transmission Element (County of Lake) 
912-85-018
Establish A Geothermal Data Bank (City of Susanville) 
912-85-015
Complete Geothermal Resource Assessment to Support a Direct-Use Program (City of Clearlake) 
912-85-014
Continue Office of Energy Management to Coordinate Geothermal Development (County of Mono) 
912-85-013
Complete Modifications to The Hospital Geothermal Heating Project (Indian Valley Hospital District) 
912-85-009
Complete A Healdsburg-Geyser Road Sediment Control Project 
912-85-008 
Transportation Of Geothermal School Children 
912-85-007
Drill Production and Injection Wells for Commercial Park Project (County of Sierra) 
912-85-006
Design And Install Geothermal Heating Systems in Cedarville Hospital and Clinic 
912-85-005
Prepare Water and Sewer Engineering Plans for Heber's KGRA 
912-85-004
Design And Install a Geothermal Heating Project at Greenville Schools 
912-85-003
Prepare Micrometeorological Air Dispersion Assessment Methodology (Lake County APCD) 
912-85-002
Purchase A Microprocessor-Based Controller for Geothermal Particulate Sampling 
912-84-109
Continue San Bernardino Geothermal District Demonstration Heating System Retrofit Program 
912-84-107
Conduct Middletown Traffic Bypass Study 
912-84-106
Implement A Continuous Emission Monitoring (CEM) Project
 
912-84-104
Collect Coso KGRA Air Quality Baseline Data and Develop Dispersion Model 
912-84-100
Explore For High-Temperature Geothermal Resources (Fort Bidwell Indian Community) 
912-84-098
Design And Install Geothermal Space and Pool Heating (California Pines Community Services District) 
912-84-097
Continuously Monitor and Sample Geysers Geothermal Steam 
912-84-095
Complete Geothermal Resource Assessment for The City of Twentynine Palms Originally Awarded to County of San Bernardino 
912-84-094
Complete Geothermal Watershed Assessment and Water Data Compilation for Pieta Creek 
912-84-092
Complete Designs and Retrofit County Center (County of San Bernardino) 
912-84-091
Complete Designs and Retrofit Central Jail Complex (County of San Bernardino) 
912-84-090
Complete Designs and Retrofit Environmental Public Works Agency (County of San Bernardino) 
912-84-088
Complete Designs and Retrofit General Services Agency (County of San Bernardino) 
912-84-087
Confirm Resources and Retrofit Lake Elsinore Community Center 
912-84-085
Complete Geysers Area Land Use Mapping and Data Collection 
912-84-084
Purchase School Bus for Increased Enrollment Due to Geysers Geothermal Development 
912-84-082
Expand Geothermal Pipeline for City District Heating System (City of Susanville) 
912-84-081
Geothermal Data Bank Project 
912-84-080
Confirm Sierra Valley Geothermal Resources Including Drilling 
912-84-079
Develop The Geothermal Agricultural-Industrial Center (County of Lake) 
912-84-077
Continue Paso Robles Resource Testing and Retrofit the City Swimming Pool 
912-84-076
Complete Feasibility Studies and Prepare Engineering Drawings for Private Users to Connect to The San Bernardino Demonstration DHS 
912-84-074
Geothermal Retrofit-City of San Bernardino Rudy Hernandez Community Center 
912-84-073
Complete Geothermal Retrofits of The San Bernardino City Hall and Convention Center 
912-84-072
Add Revegetation to Portions of The Healdsburg-Geysers Road 
912-84-066
Complete Geothermal Heating System Conversion for The Indian Springs School in Big Bend 
912-84-065
Complete Feasibility Study and Market Assessment for A Geothermal District Heating System in Mammoth Lakes 
912-84-064
Evaluate And Build Small Scale Electric and District Heating Geothermal Projects (Bridgeport PUD) 
912-84-063
Confirm Calipatria Geothermal Resource Assessment Including Drilling 
912-84-062
Conduct County-Wide Geothermal Resource Assessment (County of Modoc) 
912-84-061
Complete Geothermal Retrofit of Cedarville Schools in Surprise Valley 
912-84-059
Design And Install Courthouse/Jail Geothermal Heat Pump System (County of Siskiyou) 
912-84-058
Purchase School Bus to Provide Transportation for Children of Workers in The Geysers 
912-84-057
Conduct Geothermal Resource Assessment and Exploration City of Hot Desert Springs 
927-83-041
Complete Phase II - Geothermal Subsidence Detection Network (Imperial County) 
927-83-029
Design And Install Socrates Mine Road Emergency Truck Escape Ramps 
912-82-055
Install Air Quality Monitoring Stations to Measure Ambient Air Quality (Imperial County APCD) 
912-82-053
Complete Resource Evaluation and Well Drilling for Possible Space and Water Heating Systems for The Greenville High School (Plumas USD) 
912-82-052
Compile Existing Geothermal Resource Data and Conduct Preliminary Market Assessment to Determine Potential Uses (City of Clearlake) 
912-82-051
Calistoga Geothermal Resource Assessment 
912-82-044
Develop A Geothermal Plan, Ordinance and Regulation Revisions 
912-82-042
Susanville Geothermal Injection Well No. 1 Sgi-1 Well Completion Report 
912-82-041
Geothermal Subsidence Detection Network Monitoring  
912-82-039
Compile And Assess Tracer Tests Within the Geysers KGRA Complex Terrain 
912-82-038
Complete State-Required Modifications to The Hospital Geothermal Heating System (Indian Valley Hospital District) 
912-82-037
Establish City Planner Position to Conduct Resource and Market Assessments (City of Lake Elsinore) 
912-82-036
Establish Mono County Office of Energy Management to Coordinate Development 
912-82-034 (1984)
Drill Temperature Gradient Holes to Identify Geothermal Resources (City of Calipatria) 
912-82-034 (1985)
Drill Temperature Gradient Holes to Identify Geothermal Resources (City of Calipatria) 
912-82-033
Identify Alternative Fluid Disposal Methods 
912-82-032
Design And Install Space and Water Heating Systems in City Pool (City of Susanville) 
912-82-030
Develop Air Pollution Planning Tools for The Geysers KGRA (Northern Sonoma County APCD) 
912-82-027
Complete Analysis of Heavy Metals in Plants and Animals in The Geysers 
912-82-026
Conduct Resource Assessment Including Well Drilling at Ft. Bidwell 
912-82-025
Add Geothermal Coordinator to Inventory and Market the Direct Use of Lower Temperature Resources (Lake County Planning Department) 
912-82-022
Conduct Resource Assessment and Complete Feasibility Study for Geothermal Development in The City Of El Paso De Robles 
912-82-021
Conduct Resource Assessment on City-Owned Property in Sierra County 
912-82-020
Butts Canyon Road and Restoration 
912-82-018
Complete Geothermal Environmental & Resource Assessment of The Northeastern Portion of Kern County Including Planning and Marketing 
912-82-018
Complete Geothermal Environmental & Resource Assessment of The Northeastern Portion of Kern County Including Planning and Marketing 
912-82-018
Complete Geothermal Environmental & Resource Assessment of The Northeastern Portion of Kern County Including Planning and Marketing 
912-82-016
Conduct Resource Assessment Including Production Well Drilling at Indian Springs School for Geothermal Space Heating 
912-82-013
Drill Production Well & Retrofit A Portion of Calistoga High School for Geothermal Space Heating 
912-82-010
Construct A Water Transmission Pipeline (5000 Feet) As Part of Water Supply Relocation Due to Geothermal Development (Anderson Springs Community Services District) 
912-82-008
Complete A Geothermal Resource Market Study to Develop Direct Uses of Geothermal Resources in Sierra Valley 
912-82-007
Formulate Policies and Procedures for Geothermal Power Plant Development and Identify Resources and End Users. (County Of Mendocino) 
912-82-006 Phase I
Study Potential Social, Economical, And Environmental Impacts on The Community of Heber Due to Geothermal Power Plant Development 
912-82-006 Phase II
Study Potential Social, Economical, And Environmental Impacts on The Community of Heber Due to Geothermal Power Plant Development 
912-82-003
Complete Resource Development Planning Studies (County of Siskiyou) 
912-82-003
Complete Resource Development Planning Studies (County of Siskiyou) 
912-82-001
Design And Construct a Space and Water Heating System for The Hospital in Greenville 
912-81-032
Resurvey Imperial Valley Subsidence Monitoring Network to Assess Potential Subsidence Induced by Geothermal Power Plant Development and Operation 
912-81-025
Design And Install a Geothermal Space Heating System in The Courthouse Annex to Connect to The City's Geothermal DHS 
912-81-022
Drill A Geothermal Production Well for A Water and Space Heating System at The Hospital in Greenville and Resource Assessment 
912-81-020
Develop A Water System Master Plan Including Plans and Specifications for Water System Improvements (Anderson Springs Community Services District) 
912-81-018
Identify Direct-Use Projects and Prepare Environmental and Mitigation Assessments (Inyo-Mono Association of Governments) 
912-81-017
Assess The Market for Low Temperature Geothermal Water Produced as A By-Product of Huntington Beach Oil Field Production 
500-81-005
Conduct Geothermal Resource Assessment to Support a District Heating System (San Bernardino City Water Department) 
912-81-002
Design And Construct a Geothermal Space Heating System for The Roop's Fort Complex 
500-80-130
Geothermal Energy Opportunities for California Commerce Consultant Report Final