Phase I - Resource Procurement and Identification

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GEA Development Phase I: Resource Procurement and Identification

GEA Development Phases

The Geothermal Energy Association’s (GEA) Geothermal Reporting Terms and Definitions are a guideline for geothermal developers to use when submitting geothermal resource development information to GEA for public dissemination in its annual US Geothermal Power Production and Development Update. GEA’s Geothermal Reporting Terms and Definitions serve to increase the consistency, accuracy, and reliability of industry information presented in the development updates.


The information for this page was taken directly from Geothermal Reporting Terms and Definitions: A Guide to Reporting Resource Development Progress and Results to the Geothermal Energy Association (GEA, November 2010)


Phase I - Criteria

In reporting a Phase I geothermal project to the GEA the developer must ascertain whether or not the project being reported meets the following specified criteria. The development criteria are divided into three different subsections of geothermal Phase I development (Resource, Transmission, and External Development). It is not necessary that a geothermal project meet all of the criteria listed. The number of criteria that a project must meet in each subsection of geothermal Phase I development is specified below.

1. Resource Development Criteria

For a project to be considered a Phase I project at least two of the following Resource Development criteria must be met.

  • Literature Survey Complete
existing data and information from previous studies, exploration, and/or development has been acquired and analyzed by the developer. This preliminary analysis reveals conditions generally considered favorable for the presence of subsurface geothermal resources capable of being developed into a commercially viable geothermal reservoir.
  • Geologic Mapping Completed, Geophysical and Geochemical Sample Sites Identified
a geologic survey and any necessary airborne surveys have detected areas that exhibit features characteristic of a viable subsurface geothermal resource. This has enabled the construction of a geologic map of the area as well as a first draft conceptual model of the hydrothermal system so that sample sites have been identified.
  • Geochemical and geophysical surveys in progress
geochemical and geophysical survey techniques which determine the chemical properties, temperature, and overall characterization of the geothermal resource are underway or finished at the time of reporting and further indicate the presence of a commercially viable geothermal reservoir.


2. Transmission Development Criteria

For a project to be considered a Phase I project all of the following Transmission Development criteria must be met.

  • Internal transmission analysis complete
internal analysis of possible transmission routes by the developer completed.


3. External Development Criteria

For a project to be considered a Phase I project all of the following criteria must be met.

  • Land or lease acquired
The developer has acquired acreage sufficient to develop the power plant of the magnitude (MW) it proposes. If public land, the developer will have acquired the lease to development from the Bureau of Land Management. If private land, the developer will have secured surface rights and at least 50% mineral rights.
  • Permitting process for exploration drilling (TGH and/or slimholes) underway
the developer must have submitted and/or obtained either a permit for drilling a set of temperature gradient holes and/or a slimhole from the appropriate state agencies.


Phase I - Terms and Definitions

The following terms and their definitions are to be applied to geothermal projects which are in the Phase I stage of geothermal development.

  • Possible Resource Estimate
For a geothermal project to be considered a Phase I Possible Resource it must exhibit known characteristics which lead the developer to believe, with a level of confidence appropriate to the stage of development, that further development of the geothermal project may lead to potential economic utilization of the resource.
Specifically, as mentioned above, the developer of a geothermal project must fulfill two of the criteria listed in the Phase I Resource Development Category, all of the criteria listed in the Phase I Transmission Development Category, and all of the criteria listed in the Phase I External Development Category.
It should be noted that the Possible Resource Estimate should not be used as a value to indicate the potential installed capacity of a geothermal power plant. Rather, it is the estimated value of the subsurface geothermal resource.
  • Possible Planned Capacity Addition (PCA) Estimate
The Phase I Planned Capacity Addition (PCA) estimate is that portion of a Possible Resource that the developer deems to be viable for the economic production of electricity under existing economic conditions. Also, the PCA estimate should represent the potential capacity that is currently controlled by the developer, and not the total capacity that the developer intends to control and produce in the future. In other words, if the developer were to utilize the geothermal resource under its control to produce electricity via a geothermal power plant the Phase I PCA estimate would be the power plants estimated installed capacity. If the developer were expanding a currently operating plant the Phase I Possible PCA estimate would be the estimated capacity to be added to the plants current installed capacity.

Phase I - Projects

TechniqueDeveloperProject
Type
Capacity
Estimate
(MW)
LocationGeothermal
Area
Geothermal
Region
GEA
Report
Date
Alligator Geothermal Geothermal ProjectOski Energy LLCHydrothermal System20 MW
20,000 kW
20,000,000 W
20,000,000,000 mW
0.02 GW
2.0e-5 TW
Ely, NV
Aurora Geothermal ProjectGradient ResourcesHydrothermal System190 MW
190,000 kW
190,000,000 W
190,000,000,000 mW
0.19 GW
1.9e-4 TW
Hawthorne, NVAurora Geothermal AreaWalker-Lane Transition Zone Geothermal Region
Baltazor Springs Geothermal ProjectAlterra PowerHydrothermal SystemWinnemucca, Nevada: Energy ResourcesBaltazor Hot Springs Geothermal AreaNorthwest Basin and Range Geothermal Region
Barren Hills Geothermal ProjectRam PowerHydrothermal System32 MW
32,000 kW
32,000,000 W
32,000,000,000 mW
0.032 GW
3.2e-5 TW
China Lake South Range Geothermal ProjectNavy Geothermal ProgramHydrothermal SystemChina Lake, NV
Colado Geothermal ProjectGradient ResourcesHydrothermal System350 MW
350,000 kW
350,000,000 W
350,000,000,000 mW
0.35 GW
3.5e-4 TW
Lovelock, Nevada: Energy ResourcesColado Geothermal AreaNorthwest Basin and Range Geothermal Region
DeArmand Geothermal ProjectRaser TechnologiesHydrothermal SystemBeryl, NV
Delcer Butte Geothermal ProjectRam PowerHydrothermal System32 MW
32,000 kW
32,000,000 W
32,000,000,000 mW
0.032 GW
3.2e-5 TW
Devil's Canyon Geothermal ProjectRaser TechnologiesHydrothermal System
Dixie Meadows Geothermal ProjectOrmatHydrothermal SystemDixie Meadows Geothermal AreaCentral Nevada Seismic Zone Geothermal Region
Drum Mountain Geothermal ProjectRaser TechnologiesHydrothermal System0 MW
0 kW
0 W
0 mW
0 GW
0 TW
Delta, Utah: Energy ResourcesDrum Mountain Geothermal AreaNorthern Basin and Range Geothermal Region
Drum Mountain Geothermal Project (2)Raser TechnologiesHydrothermal System
Drum Mountain Geothermal Project (3)Ormat
East Soda Lake Geothermal ProjectAlterra PowerHydrothermal SystemFallon, NVSoda Lake Geothermal AreaNorthwest Basin and Range Geothermal Region
Edwards Creek Geothermal ProjectOrmatHydrothermal System
El Centro/Superstition Hills Geothermal ProjectNavy Geothermal ProgramHydrothermal SystemEl Centro, CA
Fallon Test Ranges Geothermal ProjectNavy Geothermal ProgramHydrothermal SystemFallon, NVFallon Geothermal AreaNorthwest Basin and Range Geothermal Region
Gerlach Geothermal ProjectU.S. GeothermalHydrothermal SystemGerlach, NV
Granite Creek Geothermal ProjectU.S. GeothermalHydrothermal SystemRed House, CA
Hawthorne Geothermal ProjectOski Energy LLCHydrothermal System25 MW
25,000 kW
25,000,000 W
25,000,000,000 mW
0.025 GW
2.5e-5 TW
Hawthorne, CAHawthorne Geothermal AreaWalker-Lane Transition Zone Geothermal Region
Hill Airforce Base Geothermal ProjectNavy Geothermal ProgramHydrothermal SystemOgden, CA
Hot Pot Geothermal ProjectOski Energy LLCHydrothermal System30 MW
30,000 kW
30,000,000 W
30,000,000,000 mW
0.03 GW
3.0e-5 TW
Winnemucca, Nevada: Energy ResourcesHot Pot Geothermal AreaNorthwest Basin and Range Geothermal Region
Leach Hot Springs Geothermal ProjectOrmatHydrothermal SystemWinnemucca, Nevada: Energy Resources
Lee Allen Geothermal ProjectGradient ResourcesHydrothermal System145 MW
145,000 kW
145,000,000 W
145,000,000,000 mW
0.145 GW
1.45e-4 TW
Fallon, NV
Lee Hot Springs Geothermal ProjectEarth Power Resources IncHydrothermal System32 MW
32,000 kW
32,000,000 W
32,000,000,000 mW
0.032 GW
3.2e-5 TW
Lee Hot Springs Geothermal AreaNorthwest Basin and Range Geothermal Region
Lightning Dock I Geothermal ProjectRaser TechnologiesHydrothermal SystemLordsburg, NMLightning Dock Geothermal AreaSouthern Basin and Range Geothermal Region
Lovelock Geothermal ProjectEarth Power Resources IncHydrothermal System32 MW
32,000 kW
32,000,000 W
32,000,000,000 mW
0.032 GW
3.2e-5 TW
Lovelock, OR
Mahogany Geothermal ProjectOrmatHydrothermal System
Mary's River Geothermal ProjectStandard Steam TrustHydrothermal System
Mary's River SW Geothermal ProjectStandard Steam TrustHydrothermal System
Midnight Point Geothermal ProjectOrmatHydrothermal System
Mt. Baker Geothermal ProjectGradient ResourcesHydrothermal System100 MW
100,000 kW
100,000,000 W
100,000,000,000 mW
0.1 GW
1.0e-4 TW
Neal Hot Springs II Geothermal ProjectU.S. GeothermalHydrothermal SystemVale, Oregon: Energy ResourcesNeal Hot Springs Geothermal AreaSnake River Plain
Newberry I Geothermal Project (2)OrmatBend, Oregon: Energy ResourcesNewberry Caldera Geothermal AreaCascades Geothermal Region
Newdale Geothermal ProjectStandard Steam TrustHydrothermal SystemNewdale, NV
North Valley Geothermal ProjectNevada Geothermal PowerHydrothermal System120 MW
120,000 kW
120,000,000 W
120,000,000,000 mW
0.12 GW
1.2e-4 TW
Nixon, CA
Olene Gap Geothermal ProjectOski Energy LLCHydrothermal System25 MW
25,000 kW
25,000,000 W
25,000,000,000 mW
0.025 GW
2.5e-5 TW
Olene, CAOlene Hot Springs Geothermal AreaCascades Geothermal Region
Orita 2 Geothermal ProjectRam Power150 MW
150,000 kW
150,000,000 W
150,000,000,000 mW
0.15 GW
1.5e-4 TW
Orita, NV
Orita 3 Geothermal ProjectRam Power150 MW
150,000 kW
150,000,000 W
150,000,000,000 mW
0.15 GW
1.5e-4 TW
Orita
Pilgrim Hot Springs Geothermal ProjectUnaatuqHydrothermal System10 MW
10,000 kW
10,000,000 W
10,000,000,000 mW
0.01 GW
1.0e-5 TW
(Near Nome), ORPilgrim Hot Springs Geothermal AreaAlaska Geothermal Region
Pilot Peak Geothermal ProjectOski Energy LLCHydrothermal System20 MW
20,000 kW
20,000,000 W
20,000,000,000 mW
0.02 GW
2.0e-5 TW
Raft River III Geothermal ProjectU.S. Geothermal114 MW
114,000 kW
114,000,000 W
114,000,000,000 mW
0.114 GW
1.14e-4 TW
Raft River, IDRaft River Geothermal AreaNorthern Basin and Range Geothermal Region
Smith Creek Geothermal ProjectOrmatHydrothermal SystemSmith Creek Valley Geothermal AreaCentral Nevada Seismic Zone Geothermal Region
Sou Hills Geothermal ProjectMontara EnergyHydrothermal SystemLovelock, ID
Thermo 2 Geothermal ProjectRaser TechnologiesThermo Hot Springs Geothermal AreaNorthern Basin and Range Geothermal Region
Trail Canyon Geothermal ProjectRaser TechnologiesHydrothermal System
Tungsten Mtn Geothermal ProjectOrmatHydrothermal SystemTungsten Mountain Geothermal AreaCentral Nevada Seismic Zone Geothermal Region
Ulupalakua Geothermal ProjectOrmatHydrothermal System
Unalaska Geothermal ProjectCity of UnalaskaHydrothermal System50 MW
50,000 kW
50,000,000 W
50,000,000,000 mW
0.05 GW
5.0e-5 TW
Unalaska, HI
Weiser Geothermal ProjectStandard Steam TrustHydrothermal SystemWeiser, NVWeiser Geothermal AreaIdaho Batholith Geothermal Region
Whirlwind Valley Geothermal ProjectOrmat


GEA Annual US Geothermal Power Production and Development Reports