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)

Contents


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

Technique Developer Project
Type
Capacity
Estimate
(MW)
Location Geothermal
Area
Geothermal
Region
GEA
Report
Date
Alligator Geothermal Geothermal Project Oski Energy LLC Hydrothermal System 20 MW20,000 kW
20,000,000 W
20,000,000,000 mW
0.02 GW
2.0e-5 TW
Ely, NV
Aurora Geothermal Project Gradient Resources Hydrothermal System 190 MW190,000 kW
190,000,000 W
190,000,000,000 mW
0.19 GW
1.9e-4 TW
Hawthorne, NV Aurora Geothermal Area Walker-Lane Transition Zone Geothermal Region
Baltazor Springs Geothermal Project Alterra Power Hydrothermal System Winnemucca, Nevada Baltazor Hot Springs Geothermal Area Northwest Basin and Range Geothermal Region
Barren Hills Geothermal Project Ram Power Hydrothermal System 32 MW32,000 kW
32,000,000 W
32,000,000,000 mW
0.032 GW
3.2e-5 TW
China Lake South Range Geothermal Project Navy Geothermal Program Hydrothermal System China Lake, NV
Colado Geothermal Project Gradient Resources Hydrothermal System 350 MW350,000 kW
350,000,000 W
350,000,000,000 mW
0.35 GW
3.5e-4 TW
Lovelock, NV Colado Geothermal Area Northwest Basin and Range Geothermal Region
DeArmand Geothermal Project Raser Technologies Hydrothermal System Beryl, NV
Delcer Butte Geothermal Project Ram Power Hydrothermal System 32 MW32,000 kW
32,000,000 W
32,000,000,000 mW
0.032 GW
3.2e-5 TW
Devil's Canyon Geothermal Project Raser Technologies Hydrothermal System
Dixie Meadows Geothermal Project Ormat Hydrothermal System Dixie Meadows Geothermal Area Central Nevada Seismic Zone
Drum Mountain Geothermal Project Raser Technologies Hydrothermal System 0 MW0 kW
0 W
0 mW
0 GW
0 TW
Delta, Utah Drum Mountain Geothermal Area Northern Basin and Range Geothermal Region
Drum Mountain Geothermal Project (2) Raser Technologies Hydrothermal System
Drum Mountain Geothermal Project (3) Ormat
East Soda Lake Geothermal Project Alterra Power Hydrothermal System Fallon, NV Soda Lake Geothermal Area Northwest Basin and Range Geothermal Region
Edwards Creek Geothermal Project Ormat Hydrothermal System
El Centro/Superstition Hills Geothermal Project Navy Geothermal Program Hydrothermal System El Centro, CA
Fallon Test Ranges Geothermal Project Navy Geothermal Program Hydrothermal System Fallon, NV Fallon Geothermal Area Northwest Basin and Range Geothermal Region
Gerlach Geothermal Project U.S. Geothermal Hydrothermal System Gerlach, NV
Granite Creek Geothermal Project U.S. Geothermal Hydrothermal System Red House, CA
Hawthorne Geothermal Project Oski Energy LLC Hydrothermal System 25 MW25,000 kW
25,000,000 W
25,000,000,000 mW
0.025 GW
2.5e-5 TW
Hawthorne, CA Hawthorne Geothermal Area Walker-Lane Transition Zone Geothermal Region
Hill Airforce Base Geothermal Project Navy Geothermal Program Hydrothermal System Ogden, CA
Hot Pot Geothermal Project Oski Energy LLC Hydrothermal System 30 MW30,000 kW
30,000,000 W
30,000,000,000 mW
0.03 GW
3.0e-5 TW
Winnemucca, Nevada Hot Pot Geothermal Area Northwest Basin and Range Geothermal Region
Leach Hot Springs Geothermal Project Ormat Hydrothermal System Winnemucca, Nevada
Lee Allen Geothermal Project Gradient Resources Hydrothermal System 145 MW145,000 kW
145,000,000 W
145,000,000,000 mW
0.145 GW
1.45e-4 TW
Fallon, NV
Lee Hot Springs Geothermal Project Earth Power Resources Inc Hydrothermal System 32 MW32,000 kW
32,000,000 W
32,000,000,000 mW
0.032 GW
3.2e-5 TW
Lee Hot Springs Geothermal Area Northwest Basin and Range Geothermal Region
Lightning Dock I Geothermal Project Raser Technologies Hydrothermal System Lordsburg, NM Lightning Dock Geothermal Area Rio Grande Rift
Lovelock Geothermal Project Earth Power Resources Inc Hydrothermal System 32 MW32,000 kW
32,000,000 W
32,000,000,000 mW
0.032 GW
3.2e-5 TW
Lovelock, OR
Mahogany Geothermal Project Ormat Hydrothermal System
Mary's River Geothermal Project Standard Steam Trust Hydrothermal System
Mary's River SW Geothermal Project Standard Steam Trust Hydrothermal System
Midnight Point Geothermal Project Ormat Hydrothermal System
Mt. Baker Geothermal Project Gradient Resources Hydrothermal System 100 MW100,000 kW
100,000,000 W
100,000,000,000 mW
0.1 GW
1.0e-4 TW
Neal Hot Springs II Geothermal Project U.S. Geothermal Hydrothermal System Vale, Oregon Neal Hot Springs Geothermal Area Snake River Plain
Newberry I Geothermal Project (2) Ormat Bend, Oregon Newberry Caldera Geothermal Area Cascades
Newdale Geothermal Project Standard Steam Trust Hydrothermal System Newdale, NV
North Valley Geothermal Project Nevada Geothermal Power Hydrothermal System 120 MW120,000 kW
120,000,000 W
120,000,000,000 mW
0.12 GW
1.2e-4 TW
Nixon, CA
Olene Gap Geothermal Project Oski Energy LLC Hydrothermal System 25 MW25,000 kW
25,000,000 W
25,000,000,000 mW
0.025 GW
2.5e-5 TW
Olene, CA Olene Hot Springs Geothermal Area Cascades
Orita 2 Geothermal Project Ram Power 150 MW150,000 kW
150,000,000 W
150,000,000,000 mW
0.15 GW
1.5e-4 TW
Orita, NV
Orita 3 Geothermal Project Ram Power 150 MW150,000 kW
150,000,000 W
150,000,000,000 mW
0.15 GW
1.5e-4 TW
Orita
Pilgrim Hot Springs Geothermal Project Unaatuq Hydrothermal System 10 MW10,000 kW
10,000,000 W
10,000,000,000 mW
0.01 GW
1.0e-5 TW
(Near Nome), OR Pilgrim Hot Springs Geothermal Area Alaska Geothermal Region
Pilot Peak Geothermal Project Oski Energy LLC Hydrothermal System 20 MW20,000 kW
20,000,000 W
20,000,000,000 mW
0.02 GW
2.0e-5 TW
Raft River III Geothermal Project U.S. Geothermal 114 MW114,000 kW
114,000,000 W
114,000,000,000 mW
0.114 GW
1.14e-4 TW
Raft River, ID Raft River Geothermal Area Northern Basin and Range Geothermal Region
Smith Creek Geothermal Project Ormat Hydrothermal System Smith Creek Valley Geothermal Area Central Nevada Seismic Zone
Sou Hills Geothermal Project Montara Energy Hydrothermal System Lovelock, ID
Thermo 2 Geothermal Project Raser Technologies Thermo Hot Springs Geothermal Area Northern Basin and Range Geothermal Region
Trail Canyon Geothermal Project Raser Technologies Hydrothermal System
Tungsten Mtn Geothermal Project Ormat Hydrothermal System Tungsten Mountain Geothermal Area Central Nevada Seismic Zone
Ulupalakua Geothermal Project Ormat Hydrothermal System
Unalaska Geothermal Project City of Unalaska Hydrothermal System 50 MW50,000 kW
50,000,000 W
50,000,000,000 mW
0.05 GW
5.0e-5 TW
Unalaska, HI
Weiser Geothermal Project Standard Steam Trust Hydrothermal System Weiser, NV Weiser Geothermal Area Idaho Batholith
Whirlwind Valley Geothermal Project Ormat


GEA Annual US Geothermal Power Production and Development Reports