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"Determination of NEPA Adequacy"×
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Geothermal Permitting and NEPA Timeline Analysis

Sep 30, 2014
4.91 MB
Publicly accessible
In this analysis, we outline the types of NEPA-related analyses and approvals (e.g., environmental assessment), and we provide examples of geothermal development activities (e.g., well drilling) that might require each type of approval, including an overview and discussion of the ...
Authors
Young, K. et al National Renewable Energy Laboratory
geothermalenergynepanational environmental policy actpermittingpermittimelinenepa databasececxcategorical exclusiondetermination of nepa adequacydnaenvironmental assessmenteaenviromental impact statementeisopeneispecies

Geothermal Project NEPA Database

Sep 30, 2014
1.59 MB
Publicly accessible
During the 2013 fiscal year, the National Renewable Energy Laboratory (NREL) developed the Geothermal National Environmental Policy Act (NEPA) Database with funding provided by the U.S. Department of Energy (DOE) Geothermal Technologies Office (GTO). The information in the databas...
Authors
Young, K. and Levine, A. National Renewable Energy Laboratory
geothermalenergynepadatabaseopeneicasual usecucategorical exclusioncxcedetermination of nepa adequacydnaenvironmental assessmenteaenvironmental impact statementeisblmusfsfonsigtonational environmental policy actrapid toolkitgrcgeothermal resources council

Geothermal Development and the Use of Categorical Exclusions Under NEPA

Sep 30, 2014
6.8 MB
Publicly accessible
This study focuses primarily on the Categorial Exclusions (CX) process and its applicability to geothermal exploration. In this paper, we: Provide generalized background information on CXs, including previous NEPA reports addressing CXs, the process for developing CXs, and the ro...
Authors
Young, K. and Levine, A. National Renewable Energy Laboratory
geothermalenergyregulatorynepacategorical exclusionfonsipermitpermittingeaenvironmentalassessmentblmbureau of land managementfinding of no significant impactnational environmental policy actadministrativestatutory

Regulatory and Permitting Information Desktop (RAPID) Toolkit

Sep 30, 2014
18.76 MB
Publicly accessible
The Regulatory and Permitting Information Desktop (RAPID) Toolkit combines the former Geothermal Regulatory Roadmap, National Environmental Policy Act (NEPA) Database, and other resources into a Web-based tool that gives the regulatory and utility-scale geothermal developer commun...
Authors
Young, K. and Levine, A. National Renewable Energy Laboratory
geothermalenergyregulatoryrapiddatabasepermittingtoolkitroadmapregulatory roadmapnepapermitlibrarybest practicesblmrapid toolkitgrcgeothermal resource councilbulk transmissionnational environmental policy acteaenvironmentalassessment

Utah FORGE: Preliminary Monitoring, Analyses, and Impact Assessment

Feb 09, 2017
9.97 MB
Publicly accessible
Preliminary monitoring and analyses for the Utah FORGE Milford Site. Includes a report detailing the seismic monitoring goals and results, a detailed techno-economic infrastructure assessment with an analysis, a budget, schedules, and cost summaries, and a summary of environmental...
Authors
Pankow, K. Energy and Geoscience Institute at the University of Utah
geothermalutahforgeutah forgeseismicseismic monitoringroosevelt hot springsmilfordreporttechno-economic infrastructureschedulesutah geothermalbudgettechno-economicnepaenvironmental impactsenvironmentassessmentevironmentalgeophysicseconomictechnicalmonitoringinfrastructureschedulecosteaseismicity

Life Cycle Water Consumption and Water Resource Assessment for Utility-Scale Geothermal Systems: An In-Depth Analysis of Historical and Forthcoming EGS Projects

Aug 31, 2013
10.97 MB
Publicly accessible
This report is the third in a series of reports sponsored by the U.S. Department of Energy Geothermal Technologies Program in which a range of water-related issues surrounding geothermal power production are evaluated. The first report made an initial attempt at quantifying the li...
Authors
Schroeder, J. et al Argonne National Laboratory
geothermalegswaterlife cyclewater consumptionpowerregional water resource assessmentstimulationinternationaldomesticgeologypermitnevadaproductioninjectioncaliforniaoregonoperationalabovegroundmake-upcoolingwellobservation wellnepadrillingproduction wellinjection wellchemicalflow testcirculation testexploration welllossreservoir lossbelowground lossoperational lossloss ratelife cycle assessmentwater resource

Utah FORGE 5-2615: Final Report for the Experimental Determination and Modeling-Informed Analysis of Thermo-Poromechanical Response of Fractured Rock

Jun 30, 2025
6.17 MB
Publicly accessible
This is the final technical report documenting laboratory experiments and modeling conducted to characterize the thermo-poromechanical behavior of fractured crystalline rocks for application to Utah FORGE. The report includes measurements of poroelastic and thermo-poroelastic prop...
Authors
Ghassemi, A. The University of Oklahoma
geothermalenergyutah forgeegslaboratory experimentstechnical reportthermo-poromechanicalfracturingporoelasticthermo-poroelasticpermeability evolutionhydraulic fracturedfitmodeling resultsstressfracture mechanicsgeomechanicsblock-scalebiot effective stressclosure pressurethermal stresstransverse fracturesstimulation

Utah FORGE 2-2404: The University of Oklahoma, Application of Advanced Techniques for Determination of Reservoir-Scale Stress State at Utah FORGE Final Report

Jun 30, 2025
3.73 MB
Publicly accessible
This final report summarizes the work done on Utah FORGE project 2-2404. The project aimed to develop a methodology integrating alternative well bore and core-based methods and reservoir-scale focal mechanisms (FM) to better estimate the reservoir stress at FORGE. The project obje...
Authors
Ghassemi, A. The University of Oklahoma
geothermalenergyutah forgeegswell borecore-basedfocal mechanismsreservoir stressfinal reporttechnical reportanelastic strain recoverydifferential strain curvefracture mechanicsdrilling-induced cracksnear-wellbore stress

Utah FORGE 5-2557: Fluid and Temperature in Fracture Mechanics and Coupled THMC Processes 2025 Workshop Presentation

Sep 18, 2025
106.89 MB
Publicly accessible
This is a presentation on the Role of Fluid and Temperature in Fracture Mechanics and Coupled Thermo-Hydro-Mechanical-Chemical (THMC) Processes for Enhanced Geothermal Systems project by Purdue University, presented by Distinguished Professor of Physics & Astronomy, Dr. Laura J. P...
Authors
Pyrak-Nolte, L. Purdue University
geothermalenergyutah forgeegs2025 annual workshopfracture mechanicsthmcfluid-rock interactionsrate-and-statefrictioncoulomb failureseismicaseismicgeomechanicspresentationpresentation recordingpresentation slidesreport

Economic Impact of Permitting Timelines on Produced Geothermal Power

Feb 15, 2022
469.81 MB
Publicly accessible
Despite having a large geothermal power potential in the United States, only a small fraction has been developed for power generation. Various barriers, including technical, financial, and regulatory permit delays, are attributed to lower contribution of geothermal energy in the n...
Authors
Neupane, G. and Adhikari, B. Idaho National Laboratory
geothermalenergypermittingnepaceqasalton sea geothermalsalt wells geothermaltruckhaven geothermalcove fort geothermalpermitting timelinestimelinespermitnon-technicalbarriersreport

Caldwell Ranch Exploration and Confirmation Project, Northwest Geysers, CA: 2011 Geothermal Technologies Peer Review Project Summary

Jan 01, 2011
51.4 kB
Publicly accessible
Caldwell Ranch Exploration and Confirmation Project, Northwest Geysers, CA: 2011 Geothermal Technologies Peer Review Project Summary The Caldwell Ranch Exploration and Confirmation Project was to drill, test, and confirm the present economic viability of the undeveloped geothermal...
Authors
Walters, M. Geysers Power Company, LLC
geothermalcaldwell ranchlow temperature zonehigh temperature zonesteamtracernon-condensable gaseswaste water injectionre-completionsidetrackreservoirgeysers fieldpeer reviewsonoma countycalifornia

Utah FORGE: Final Topical Report 2018

Apr 07, 2018
173.06 MB
Publicly accessible
This is the final topical report for the Phase 2B Utah FORGE project, which is located near Roosevelt Hot Springs, Utah. This PDF format report details results associated with the conceptual geologic model, deep well 58-32, rock geomechanics, reservoir temperatures, seismic survey...
Authors
Moore, J. et al Energy and Geoscience Institute at the University of Utah
geothermalenergyforgeutah forgeroosevelt hot springsutah forge phase 2butah forge 2b final reportutah forge final reportutah forge 2bconceptual geologic modelgeologystructuralsoil gas surveyseismic reflectiontemperature profilewell 58-32geomechanical propertiesstress analysisseismic monitoringmicroseismicityinduced seismicityseismicitytemtransient electromagneticspermeabilitypetrology cuttingsco2hecarbon dioxideheliumismpinduced seismicity mitigation planenvironmental impact assessmenttechno-economic assessmentoutreachgeophysicswellpetrologyhydrochemistryfracturesgravitypermittinginfrastrutureseismic mitigationenvironmental assessmentrock stressgeomechanicssoil gasdfnconstructionquaternary faultsutahegsmilford

Newberry EGS Demonstration: Initial Project Report and Induced Seismicity Mitigation Plan, 2011

May 05, 2024
70.06 MB
Publicly accessible
This is the first project report and induced seismicity mitigation plan for the Newberry Enhanced Geothermal Systems (EGS) Demonstration project. The primary objectives of this first phase were to obtain necessary permits and comply with all regulations, including NEPA, communica...
Authors
Cladouhos, T. et al AltaRock Energy Inc
geothermalenergynewberryegsdemonstrationvolcanoaltarockoregongeologygeologic modelconceptual resource modelseismicityinduced seismicitymitigationmaximum magnitudein situ stresspermittingstimulationreservoir characterizationdrilling planwell testingrisk mitigationreporting

Utah FORGE: Hydraulic Fracture Width Determination Using Stoneley Wave Pressure Testing and Electrical Borehole Scans

Oct 06, 2023
1 MB
Publicly accessible
This report provides insights into Utah FORGE well 58-32's hydraulic fractures. It utilizes both electrical borehole scans from Schlumberger's Formation Micro-scanner Image tool (FMI) and Stoneley waves from a borehole sonic tool. These methods are combined in a comprehensive work...
Authors
Hornby, B. Hornby Geophysical Services, LLC
geothermalenergyfmistonely wavesformation micro-scanner image toolhydraulic fractureshydraulic fractureelectric borehole scansfracturesutah forgeutah forge well fracturespressure testingutah forge fracture reportborehole sonic toolegsfracture widthreportschlumbergerwave analysisworkflowfracture characterization58-32reservoir characterization

Utah FORGE 5-2615: Laboratory Data for Insights on Hydraulic Fracture Closure and Stress Measurement

Jun 12, 2024
4.82 MB
Publicly accessible
This dataset includes data from injection/fall-off experiments conducted in controlled laboratory settings. The aim is to investigate the physics governing fracture closure and the associated stress measurements during hydraulic fracturing. These time series data include flow rat...
Authors
Ye, Z. and Ghassemi, A. University of Oklahoma
hydraulic fracturinginjection/fall-off testsin-situ stress measurementsfracture closuregeothermalegsutah forgeminifracstressflow ratepressurevolumelaboratoryenergyinjectionfall-offwater injectionoil injectionsierra white granitecrab orchard sandstonescioto sandstonekismetgeomechanics

Developing Successful Exploration Strategies in Extended Terranes

Dec 31, 2013
7.07 MB
Publicly accessible
We conducted a comprehensive analysis of the structural controls of geothermal systems within the Great Basin and adjacent regions. Our main objectives were to: 1) Produce a catalogue of favorable structural environments and models for geothermal systems. 2) Improve site-specifi...
Authors
E., J. University of Nevada
geothermalstructural controlsgreat basinquaternary faultswalker lanesouthern cascadespotential for developmentsubsurfacegeologykinematic analysisstress determinationgravitygravity surveygeophysicsgeophysicalslip tendancy3d modelingtectonic settingdrill sitedrill site selection

Resource Analysis for Deep Direct-Use Feasibility Study in East Texas, Part 2

Mar 01, 2019
3.53 MB
Publicly accessible
The National Renewable Energy Laboratory, Southern Methodist University Geothermal Laboratory, Eastman Chemical, Turbine Air Systems, and the Electric Power Research Institute are evaluating the feasibility of using geothermal heat to improve the efficiency of natural gas power pl...
Authors
Richards, M. et al Southern Methodist University
geothermalenergyeast texasheat flowsmusouthern methodist universitymemodeep direct-usegeological variabilitytravis peakpermitreservoireastman chemicalcross-sectionsabine upliftheatflownreltxdduthermal conductivitypermittingregulatory agenciesland accesssurface watersurface heat flowgeologic variability evaluation

GeoVision Barriers Taskforce

Sep 30, 2015
55.69 kB
Publicly accessible
This submission includes papers, presentations, and data developed during the multi-year GeoVision Barriers Taskforce effort. Developers have identified many non-technical barriers to geothermal power development, including land access, permitting, and market barriers. Included i...
Authors
Young, K. and Levine, A. National Renewable Energy Laboratory
geothermalenergybarrierscostspermitpermittingregulatorytimelinesocial acceptanceregulationreedsgeovisionsocio-economicssocialeconomicssocio-economicseatsocio-economic assessment toolgeoreportbarriers expert teamland accesstransmissionmarketcosteconomiceaenvironmentalassessmentculturaltribalbiologicalregulatory frameworkstatefederalleasinggeothermal resource potentialdevelopment timelinesnepamarket barriersincentive

Research Report of Low Temperature Geothermal Play Fairway Analysis for the Appalachian Basin

Sep 30, 2015
32.65 MB
Publicly accessible
This is a final report summarizing a one-year (2014-15) DOE funded Geothermal Play Fairway Analysis of the Low-Temperature resources of the Appalachian Basin of New York, Pennsylvania and West Virginia. Collaborators included Cornell University, Southern Methodist University, and...
Authors
Jordan, T. et al Cornell University
geothermalnew yorkpennsylvaniawest virginiadeep direct usedduappalachian basingeothermal play fairway analysispfaplay fairwayanalysismonte carlofinal reportphase 1low temperatureexplorationcharacterization

EGS Collab: Modeling and Simulation Working Group Teleconference Series (99-128)

Jun 07, 2022
8.18 GB
Publicly accessible
This submission contains the presentation slides and recordings from EGS Collab Modeling and Simulation Working Group (MSWG) teleconferences number 99 through 128. These teleconferences served three objectives for the project: 1) share simulation results, 2) communicate field acti...
Authors
White, M. et al Pacific Northwest National Laboratory
geothermalenergyegs collabsurfhydraulicfracturingstimulationsanford underground research facilityexperimentegsconferenceteleconferencerecordingmeetingpresentationscientific discussionmswgmodeling and simulation working group

Protocol for Regeneration of Ligand-Depleted Adsorption Media for Rare Earth Element Recovery from Geothermal Brine

May 24, 2016
13.67 kB
Publicly accessible
Description of experimental protocol used to characterize the effectiveness of regenerating ligand-based adsorption media through the addition of ligands when media were previously depleted of ligands during use. Results of the effectiveness of this regeneration are also described.
Authors
Stull, D. Tusaar Corp.
geothermalligandligand regenerationadsorptionmineral recoveryrare earth elementreesimulated brineexperimental protocol

Improvements in 2016 to Natural Reservoir Analysis in Low-Temperature Geothermal Play Fairway Analysis for the Appalachian Basin

Aug 18, 2016
128.01 MB
Publicly accessible
*These files add to and replace same-named files found within Submission 559 (hover over file display names to see actual file names in bottom-left corner of screen)* The files included in this submission contain all data pertinent to the methods and results of a cohesive multi-st...
Authors
Camp, E. Cornell University
geothermalappalachian basinnew yorkpennsylvaniawest virginiadistrict heatingdeep direct uselow-temperaturereservoirproductivityfavorabilityreservoir productivity indexreservoir flow capacityrpi rfcgpfa-abpfageothermal play fairway analysisexplanationmetadatafile descriptionmethodsreservoirssensitivity analysismonte carloshapefilegisgeospatial datanypawvcounty boundariescsvnortheastern united stateslow temperature

Project HOTSPOT: Mountain Home Well Borehole Geophysics Database

Nov 11, 2012
209.37 MB
Publicly accessible
The Snake River Plain (SRP), Idaho, hosts potential geothermal resources due to elevated groundwater temperatures associated with the thermal anomaly Yellowstone-Snake River hotspot. Project HOTSPOT has coordinated international institutions and organizations to understand subsurf...
Authors
Shervais, J. Utah State University
geothermalsnake river plainproject hotspotidahoyellowstone hotspotborehole geophysicsmountain homegeophysicsborehole logdowhnhole geophysicstemperaturepressuregamma raymagnetic susceptibilitygeochemistrythoriumuraniumpotassiumneutronresistivityimage logsrpboreholewell data

Project HOTSPOT: Kimberly Well Borehole Geophysics Database

Jul 04, 2011
973.96 MB
Publicly accessible
The Snake River Plain (SRP), Idaho, hosts potential geothermal resources due to elevated groundwater temperatures associated with the thermal anomaly Yellowstone-Snake River hotspot. Project HOTSPOT has coordinated international institutions and organizations to understand subsurf...
Authors
Shervais, J. Utah State University
geothermalproject hotspotsnake river plainyellowstone hotspotidahoborehole geophysicskimberlytemperaturepressuregamma rayseismicsonicmagnetic susceptibilityborehole logdownholegeophysicsgeochemistrythoriumuraniumneutronresistivitypotassiumimage logdownhole geophysicssrpboreholewell data

WISE-CASING: Time Domain Reflectometry Data from Lab Experiment on Coaxial Cable

Mar 15, 2018
5.05 MB
Publicly accessible
The coaxial-cable experiment conducted in the lab was with 80 m coaxial cable( RG-85). This experiment compares the TDR response between damaged and undamaged cable. For the damaged cable, the damaged section is in the middle (40 m). The amplitude of the data is mV with time (us).
Authors
Wu, Y. and Wang, J. Lawrence Berkeley National Laboratory
geothermalenergytdrexperimentlab testtime domain reflectometrycoaxial-cabledamaged coaxial-cablewellboreintegritycasingcabledamagedwise-casingcoaxialsensingassessment
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