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Current Geothermal Projects/Exploration Activity
Geothermal exploration projects in the Great Basin (and adjacent areas) are described in the
project list below, and may be viewed spatially in our Interactive Exploration Map. Although
we try
to verify data and include all projects, we cannot ensure their validity. See also the
Nevada
Geothermal Update from the Nevada Division of Minerals.
1. Alkali, NV: RAM Power Alkali is one of Ram Power’s projects projected to produce 40 MW. It is noted to be part of their Clayton Valley project area, however this project is actually located in Big Smokey Valley, but is considered by RAM to be part of their greater Clayton Valley project area. 2. Alligator Ridge, NV: Oski Energy This property, adjacent to the Alligator Ridge gold mine, is in the initial stages of geothermal exploration. Barrick Gold is considering re-opening this mine, and Oski is in discussions with them. No known work completed recently on the property, but Oski reports an estimated 20 to 40 MW resources (Jennejohn, 2010). 3. Alum (aka Weepah), NV: RAM Power The 7,198 acre Alum project has been drilled in the 1970's, and 1980's by Amax Exploration, Phillips Petroleum, and O'Brien Resources (46 TG holes). Geothermometer temperatures indicate a reservoir temperature up to 225°C. Maximum bottom-hole temperatures from prior drilling were 118°C at 454 meters, but geothermometers suggest higher temperatures at depth (GeothermEx, 2004). In November 2009, SGP completed ground-based MT and airborne ZTEM surveys and drilling well 25-29 which reached 126oC at 620m. The former Sierra Geothermal Power was awarded a $5 million DOE grant with funds to be used at Alum for day/night thermal infrared imagery, 3D resistivity, shallow temperature surveys, and drilling. Ram lists this project as part of their greater Clayton Valley project, but it is located Big Smokey Valley. SGP reported an estimated 33-68 MW resource at Alum (Jennejohn, 2010). |
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4. Aurora, NV: Gradient Resources (formerly Vulcan Power)
The Aurora prospect consists of 29,000 acres in an area of Quaternary basaltic volcanism. Seventeen temperature gradient wells indicate a large geothermal anomaly. A GeoVision technology survey identifying thermal anomalies was completed recently on the property. Gradient reported an estimated 132 MW resource at Aurora.
5. Baltazor Hot Springs, NV: Magma Energy
A former KGRA, Baltazor has been explored in the past by Phillips Petroleum and Earth Power Resources. Chemical analyses from this boiling spring and adjacent well yields geothermometer temperatures on the order of 150oC-160oC. No known work completed recently on the property.
6. Barren Hills, NV: RAM Power
The Barren Hills project spans 5154 acres in an area previously explored by Chevron Oil Company, who drilled 44 TG holes during the late 1970's and early 1980's and conducted various geological and geophysical studies. The former Sierra Geothermal Power (SGP) completed gravity and airborne ZTEM surveys on the property. SGP was acquired by RAM Power in 2010. Ram considers the project to be greenfield. SGP reported an estimated 46-99 MW resource at Barren Hills.
7. Beowawe, NV: Magma Energy
Magma's 1,735 acres are contiguous with Terra-Gen Power’s 16.6 MW dual flash plant. The Beowawe Property reservoir temperature is estimated at 226°C-238°C from geothermometry. The existing power plant is producing 205°C water.
8. Beowawe, NV: Terra-Gen
Aided by a ~$2 M DOE grant, Terra-Gen is installing a bottoming cycle to their existing 17.7 MW dual flash plant.
Black Warrior, NV: Nevada Geothermal Power
See ‘North Valley Property’ below
9. Buffalo Valley, NV: Hallador Petroleum
In 2002, UNR samplers measured temperatures in 58 springs, and sampled four ranging in temperature from 12 to 77.3°C. The Na-K-Ca temperature from 2002 data is 130°C. No development information is available on this property.
10. Buffalo Valley, NV: Magma Energy
This greenfields prospect on the west side of Buffalo Valley has a warm spring and Quaternary faulting. No known work completed recently on the property.
11. Caliente, NV: Gregory Barlow
Geothermal test wells drilled in the area in 1883 had reported temperatures of 80°C in a pumped well and 97°C in a nearby monitoring well, both at depths of less than 30 m (Flynn and Larson, 1983). A permit has been issued to drill a production hole is on the north end of the town of Caliente.
12. Carson Lake, NV: ORMAT
A 20 MW project has been proposed by Ormat and an EIS is currently in progress. Exploration drilling is being performed. NV Energy signed a JV agreement with ORMAT to jointly develop this property adjacent to the Fallon Naval air station if ORMAT can demonstrate >30 MW production. Project is waiting for several EIS's for continued development and transmission.
Clayton Valley Project, NV: RAM Power
The Clayton Valley project combines several RAM properties with adjacent properties belonging to the former Sierra Geothermal, which RAM acquired in 2010. The area includes (Alkali Hot Springs, Pearl Hot Springs, Weepah (see Alum entry), and Montezuma and Silver Peak project areas. All project areas are located in Esmeralda County. Shallow wells with temperatures of up to 88°C have geothermometry indicating reservoir temperatures up to 227°C. RAM estimates up to 160 MW of geothermal power from the first four combined properties (minus Silver Peak). Geophysical surveys are currently being completed, to be followed by drilling in 2011. A 32 MW power plant is expected to be on the property by 2013. RAM holds a PPA with NV Energy and is permitting exploration drilling for 2011-12.
13. Colado, NV: Gradient Resources (formerly Vulcan Power)
In 1982, Mariner (1982) and others reported a surface temperature of 61°C and estimated a reservoir temperature of 128°C and 169°C using silica and Na-K-Ca geothermometers, respectively. The ~13,000 acre Colado project is located 7 miles northeast of Lovelock, Nevada. This blind geothermal system was discovered from drilling water wells and mine shafts in the area. Vulcan received and returned a $3.8 M DOE grant for remotely sensed radiation detection together with aerial photography and shallow temperature surveys. A GeoVision airborne survey identifying thermal anomalies, a 50 station MT survey, and a 2-D seismic reflection survey were all completed recently on the property. Gradient reported an estimated 121 MW resource at Colado (Jennejohn, 2010).
14. Columbus Marsh, NV: Magma Energy
The 2,560 acre Columbus Marsh Property is within the northwest-trending Walker Lane, which exhibits active dextral oblique-slip with approximately four to six millimeters per year. A survey of playas in the area by the Great Basin Center found evidence of borate crusts, which was interpreted as evidence for a hidden geothermal system. Fluids from nearby Columbus well 2/36 yielded a Na-K-Ca geothermometer reservoir estimate of 210°C. No known work completed recently on the property.
15. Contact, NV: Caldera Geothermal
No information is available on this 1,920 acre site.
16. Dead Horse NV: ORMAT
Ormat completed the drilling of the first well and continues with drilling activity for a proposed 20-30 MW project.
17. Delcer Buttes, NV: RAM Power
Explored by Phillips Petroleum in the past. Ram has identified a thermal anomaly target using shallow temperature probes. Ram considers the Delcer Buttes a greenfield project with an estimated capacity of 30 MW (Jennejohn, 2010).
18. Desert Peak, NV: ORMAT
DOE awarded ORMAT ~$3.8 M in late 2009 to increase power at its Desert Peak power plant by attempting EGS stimulation of a non-commercial well (Well 15-12) that was drilled as a production well, but was non-commercial based on poor permeability; hopes are that favorable geologic units can be stimulated to increase permeability.
19. Desert Queen, NV: Magma Energy
The property consists of 10,935 acres of both BLM and private land. Phillips Petroleum drilled 12 TG and eight stratigraphic holes in the Desert Queen area. One of these holes reached a temperature of 101°C at a bottom depth of 425 meters. The property got back on the exploration radar when the Great Basin Center ran a pilot study for their shallow (2 m) temperature survey method, which delineated an interesting surface thermal anomaly. Magma estimates a 36 MW inferred resource at the property and in 2010 applied for permits to drill 10 temperature gradient wells on the property.
20. Dixie Meadows Comstock, NV: Terra-Gen
Numerous hot springs (called Dixie Hot Springs) have reported temperature of 72. A permit was issued in 2010 to drill 2 production holes (8,500’ and 10,000’) on this property. Terra-Gen estimates the resource could produce 62 MW.
21. Dixie Valley, NV: RAM Power
A former Sierra Geothermal Power property, the property reverted to RAM Power during SGP’s acquisition by RAM in 2010. No information is available on this 4,478 acre project.
22. Dixie Valley, NV: Magma Energy
Along the range front and southwest of Terra-Gen’s operating geothermal power plant. A deep, hot but dry production well exists on the property. No known work completed recently on the property.
23. Dixie Valley, NV: Terra-Gen
Terra-Gen received a $2 M DOE contract to develop and put on line the first commercial use of a supercritical bottoming cycle at its Dixie Valley power plant using inlet temperatures of less than ~150°C. This may augment the 62 MW current capacity of the plant. In addition, in 2010 Terra-Gen acquired permits to drill 6 10,000 foot deep ‘observation wells’ on their property.
24. Dixie Valley North, NV: RAM Power
A former Sierra Geothermal Power property, the property reverted to RAM Power during SGP’s acquisition by RAM in 2010. No information is available on this 14,170 acre project.
25. Edna Mountain, NV: Nevada Geothermal Power
This 12 mi2 property lies just northeast of NGP’s Pumpernickel Valley property, and is a blind target without associated hot springs. A hot well on the property has geothermometer values suggesting a 200oC resource.
26. Edwards Creek SW, NV: ORMAT
The Edwards Creek project encompasses 7,617 acres covering 13 kilometers of the Clan Alpine Mountains range-front fault. A gravity survey conducted by Standard Steam Trust during 2008 identified the location of the Clan Alpine fault as well as a sub-parallel fault that lies basin-ward of the range-front fault. This sub-parallel fault may be more significant of the two faults, and is believed to be the fault associated with high-temperature ground water encountered by shallow exploration drilling at Edwards Creek in 2005 and 2006. Six TG core holes are currently being permitted with the BLM.
27. Fallon, NV: Vista Verde LLC
A permit was issued in 2010 to drill 1 production and 1 injection hole on this property immediately south of Magma’s Soda Lake property.
28. Fish Lake Valley, NV: University of Kansas
The University of Kansas received a $2.4 M DOE grant to complete innovative 2D and 3D seismic studies around the Emigrant, Playa, and Hot Box geothermal prospects. Esmeralda Energy reported an estimated resource of 25 MW for Fish Lake Valley (Jennejohn, 2010).
29. Gabbs Valley, NV: Geoglobal Energy LLC
This 18,500 acre property hosts a blind geothermal system discovered and delineated in the 1970’s. A variety of geophysical surveys, including gravity, magnetic, magnetotelluric, time-domain electromagnetic (TDEM), Schlumberger soundings and micro-seismic surveys, as well as TG drilling, were performed. Geoglobal plans or has performed geochemistry, LIDAR, and structural mapping. A rough heat-in-place estimate of 20 MW has been calculated for the property.
30. Gerlach, NV: RAM Power
A former Sierra Geothermal Power property, the 1,662 acre property reverted to RAM Power during SGP’s acquisition by RAM in 2010. The Geothermal Energy Association (Jennejohn, 2010) reports that this project is in early stages of development with an anticipated production capacity of between 7 and 15 MW.
31. Granite Springs, NV: Magma Energy
Past geochemical groundwater sampling suggests reservoir temperatures in the 162°C-191°C range.
ORMAT had investigated this area but dropped the project.
32. Hawthorne, NV: Oski Energy
Amax drilled an encouraging hole on the property. Oski has completed soil geochemistry and a magnetic survey on the property, and has compiled data. Oski reported 25-50 MW is anticipated for this project (Jennejohn, 2010).
33. Hawthorne, NV: U.S. Navy
The Navy, along with researchers from the University of Nevada, Reno, has conducted shallow temperature surveys, structural mapping, geophysics, and drilling over portions of the U.S. Army Depot lands at Hawthorne. Work has identified two previously unknown thermal anomalies which appear to be blind geothermal systems. The Navy GPO reported an estimated resource of 12-25 MW for this project area (Jennejohn, 2010).
34. Hazen (Patua), NV: Gradient Resources (formerly Vulcan Power)
Several production drill rigs were observed on the ground controlled by Vulcan Power Company in 2009 and on into 2010. A GeoVision airborne survey identifying thermal anomalies, a 50 station MT survey, and a 2-D seismic reflection survey were all completed in 2009-2010 on the property. The Company applied to drill 4 observation and 6 production holes on the property. Rumors have surfaced about construction of a 60 MW power plant that is scheduled to begin in early 2011.
35. Hot Pot, NV: Oski Energy
Oski received a DOE innovative exploration grant of $4.2 M to perform “2.5D” seismic for depths usually below that considered amenable for this process. The Company has completed soil geochemical, gravity, and Geoprobe surveys, conducted surface mapping, and drilled six 500’ deep temperature gradient wells. A 3D geologic model is currently being constructed. Two 2500’ deep slim holes are scheduled to be drilled in 2011. Oski reported and estimated 30-50 MW from this partly ARRA project (Jennejohn, 2010).
36. Hot Sulphur Springs, NV (Tuscarora): HSS II LLC - ORMAT
ORMAT reported on Feb. 10, 2010 that it signed an agreement to acquire 100% of HSS II LLC's interest in Hot Sulphur Springs and construct a power plant that is scheduled to come into operation in 2012. In 2010 three production holes were permitted for the property. Field development is now completed and power plant equipment is on its way to the site. Ormat reported an estimated resource of 16-40 MW (Jennejohn, 2010).
37. Jersey Valley, NV: ORMAT
As of February 3, 2011 ORMAT’s 15 MW Jersey Valley power plant is built and in commissioning as of spring 2011.
38. Lee Allen Hot Springs, NV: Gradient Resources (formerly Vulcan Power)
The Lee Hot Springs have surface temperatures of about 88oC, and a shallow well encountered 125°C. Cation and silica geothermometer temperatures suggest a 165°C reservoir. During the late 1970s the Navy Geothermal Program Office drilled five 500-foot geothermal gradient wells south of Lee Hot Springs. Gradient Resources report this property may produce 48-115 MW (Jennejohn, 2010).
39. Mary's River, NV: Standard Steam Trust
The Mary's River project encompasses 34,138 acres of privately and federally-owned land. Geothermal indicators include active hot springs at the "Devil's Punchbowl", tufa mounds and fossil hot spring terraces, and high bottom hole temperatures (173°C) in deep oil wells in the basin to the east. Temperature gradient holes drilled by Amax Geothermal Inc. had values ranging from 32°C/km to 336°C/km. Geothermometer (Na-K-Ca) temperatures range to 200°C at Cress Ranch and 215°C at the Devils Punchbowl. In 2010 SST permitted 54 thermal gradient wells.
40. Mary's River SW, NV: Standard Steam Trust
This 10,310 acre project is located SW of SST's Mary's River project in Elko County, Nevada (see article above). Detailed gravity and seismic data revealed strong faulting through the property along which hot springs and warm springs occur. Temperature gradient drilling program was completed by AMAX in the late 1970’s and two deep wells which lie on the property had bottom-hole temperatures of 173°C at 2,734m and 148°C at 2,990m.
41. McCoy, NV: Magma Energy
AMAX performed geophysical, geochemical, and geological surveys in the area of Magma's advanced stage 11,418 acre McCoy Property in the late 1970's, and drilled 52 shallow temperature gradient holes. Well temperatures reached 102°C and temperature gradients ranged up to 522°C per kilometer. AMAX estimated the area within the 200°C isotherm to be more than 30,000 acres. Magma is the recipient of a $5 M DOE grant at McCoy to include geophysics, soil gas, and angled TG holes. Magma reported an estimated resource of 80 MW.
42. McGee Mountain, NV: Caldera Geothermal
Intermittent fumarolic activity and hydrothermal alteration led Phillips Petroleum and Earth Power Resources to examine the McGee Mountain property in the 1970's and 1980's. Subsequent drilling reached ~120⁰C at 120 m depths, and springs and wells down the hydrologic gradient have geothermometer temperatures reaching 200C. Caldera received a $1.6 M DOE grant to perform work on the property. In 2010 Caldera completed a gravity and hydroprobe survey of the area. Temperature gradient drilling is scheduled for the Spring of 2011.
43. McGinness Hills, NV: ORMAT
Surface sinter is exposed in this former gold exploration property in Lander County. Drilling encountered hot water with high geothermometer temperatures. Subsequent work by Ormat led to a November 2009 announcement of a 30 MW PPA to furnish power to NV Energy from the McGuiness Hills Geothermal project. Drilling is ongoing and the project is in an advanced stage of equipment manufacturing as of early 2011. Ormat reported an estimated resource of 30 MW (Jennejohn, 2010).
44. Montezuma, NV: RAM Power
Part of the Clayton Valley project, Montezuma is estimated to be a 40 MW power plant when completed. Ram Power has a 20 year PPA with NV Energy for supply of power from the collective Clayton Valley Project properties.
45. Mopung Hills, NV: Magma Energy
No information is available on this project. This project is no longer mentioned on Magma’s web site.
46. New Pass (Hallador Petroleum)
No information is available on this project.
47. New York Canyon, NV: Gradient Resources (formerly Vulcan Power)
At least three companies conducted geothermal exploration during the late 1970s and early 1980s in the area, possibly drawn by a steaming 140 foot well drilled in 1963. At New York Canyon, areas of intense alteration and leaching are associated with deposition of silica and other minerals, and soil geochemical surveys identified strong structurally controlled anomalies. Gradient Resources reported an estimated resource of 27-54 MW (Jennejohn, 2010).
48. New York Canyon, NV: TGP Development Co.
TGP Development Company received a $14 M DOE grant to demonstrate commercial EGS techniques. No news on this property. Terra-Gen reported an estimated resource of 62 MW (Jennejohn, 2010).
49. North Valley, NV: Nevada Geothermal Power
Formerly called the Black Warrior property, North Valley is located in T23N, R25E, Section 8 (BLM) plus seven square miles of private land. Previous drilling has indicated a high geothermal gradient and a 128oC temperature at 552 m depth. A heat in place estimate by Geothermex indicates a 126 MW/55 MW P50/P90 resource. NGP received a $1.6 M DOE Grant to undertake subsoil and down hole gas-geochemical surveys at Black Warrior. No known work was recently completed on the property.
50. Panther Canyon, NV: Magma Energy
The Panther Canyon Property consists of 11,156 acres of BLM land in Grass Valley in Pershing County NV. Exploration by the USGS, Lawrence Berkeley Labs, Aminoil USA, and Sun Oil Company performed TG drilling, geophysical, geochemical, and geological surveys. Geophysical data included gravity, ground magnetics, magnetotelluric, standard resistivity, bipole-dipole, dipole-dipole resistivity, P-wave delay, microearthquake behavior, seismic ground noise, and active seismic refraction and reflection. 58 TG holes were drilled in the vicinity of Panther Canyon; bottom hole temperatures reached 94°C. No geochemical data on fluids is available. Magma reports a 34 MW inferred resource on the property (Jennejohn, 2010).
51. Pearl Hot Springs, NV: RAM Power
See RAM Power’s “Clayton Valley” project. Sierra Geothermal Power reported an estimated resource capable of producing 22-45 MW before Ram Power took over the project (Jennejohn, 2010). Ram estimates the power plant to be constructed will have a capacity of 40 MW.
52. Pumpernickel Valley, NV: Nevada Geothermal Power
Previously drilled wells on NGP’s property along the western edge of the Pumpernickel Valley have a maximum measured temperature of 135°C with geothermometer estimates of 150°C to 218°C. Gravity, seismic, and thermal gradient surveys have led NGP to conclude a 15-33 MW estimate of the property. In 2010 NGP acquired permits to drill 3 observation wells, 7 production, and 8 injection wells. Nevada Geothermal estimates a resource capable of producing 15-33 MW.
53. Pyramid Lake, NV: Pyramid Paiute Tribe
The Pyramid Lake energy project received an $8.5 M DOE grant to perform regional stress analysis, geophysical survey, and shallow temperature surveys in the Pyramid Lake Reservation. Two slim holes were drilled at Astor Pass in the winter of 2010-2011; drill results were not available at the time of this writing.
54. Quartz Mountain, NV: Magma Energy
The Quartz Mountain Property is located in west-central Nevada on the boundary of Nye and Mineral Counties. The site is approximately 20 km north of the town of Gabbs and 5 km east of Nevada highway 361. The property hosts two abandoned precious metal mines with underground workings and abandoned surface equipment and structures. There is reported extensive alteration and chalcedonic spring sinter in talus in the area, though this could be middle Miocene in nature. No information is available on this project, which no longer appears on the Company website.
55. Reese River, NV: RAM Power
Exploration to date at the 6,145 acre Reese River project includes a total of 57 wells ranging in depth from 100 to 1524 meters with recorded temperatures up to 150°C. Temperature data indicates a large thermal anomaly approximately 10 km long by approximately 3 km wide. Temperature gradients measured in this area reach a maximum of approximately 500°C/km. Geophysical surveys completed to date include seismic, gravity, magnetotelluric and radiometric surveys. Geological and structural mapping has been completed and geochemical analyses were undertaken on soil, water, rock and vegetation. In November 2009, Sierra Geothermal Power completed a program of 10 shallow exploration holes totaling 2,140 meters, suggesting that the size of the thermal anomaly is greater than previously understood. The property reverted to RAM Power during SGP’s acquisition by RAM in 2010. Before the acquisition, SGP reported a resource that could produce between 26 and 58 MW (Jennejohn, 2010).
56. Rhodes Marsh, NV: Caldera Geothermal
No information is available on this 480 acre site.
57. Salt Wells, NV: Gradient Resources (formerly Vulcan Power)
During 2010, Gradient applied to acquire permits to drill 2 observation wells and 1 production hole on the 8,304 acre property. Vulcan Power completed a Schlumberger/EScan electrical resistivity survey on this ~15,000 acre property in 2009 and drilled several intermediate- and deep-exploration wells. During 2010 Gradient applied to acquire permits to drill 2 observation wells and 1 production well on the property. No other information is available on this prospect.
58. San Emidio, NV: U.S. Geothermal
USG received a DOE grant for $3.8 M in and around San Emidio to explore for large diameter fractures using a 3 component seismic survey, PSInSAR, and kinematic structural modeling. In August 2010 USG, received a Special Use Permit to construct their 8.6 MW (net) Phase 1 plant that will eventually replace the four aging 1.2 MW converters currently generating electricity. US Geothermal reported an estimated total resource size of 20-25 MW (Jennejohn, 2010).
59. Silver Peak, NV: RAM Power
Now part of RAM Power's Clayton Valley project, the property reverted to RAM Power during Sierra Geothermal Power’s acquisition by RAM in 2010. Silver Peak was first explored in the 1980s by Phillips Petroleum Company who drilled six temperature gradient wells in the area. Exploration resumed in 2005 with two more gradient holes drilled by the property vendor and ten shallow TG holes drilled by Sierra Geothermal Power in November 2009. Geothermal features visible on the property include geothermal vents, travertine-manganese silica sinter deposits, fossilized algae mats and complex faulting. Shallow wells with temperatures of up to 88°C have geothermometry indicating reservoir temperatures up to 227°C and temperature gradients exceeded 500°C/km. SGP also completed detailed MT and airborne Z-tipper Electromagnetic (ZTEM) surveys at Silver Peak. SGP was awarded a US$5 M DOE grant. Funds are to be used for drilling and exploration activities on the project, on a 50:50 cost share basis. SGP reported the project is expected to produce between 15 and 42 MW (Jennejohn, 2010).
60. Silver State, NV: Oski Energy
Oski's Silver State project is located near Darrough’s Hot Springs in northern Nye County, Nevada. The springs at Darrough's come out at or near boiling and samples from them yield geothermometer temperatures on the order of 145°C. Oski has conducted a seismic survey on the property, but no other information is available on this project. Oski reported the project is expected to produce between 25 and 50 MW (Jennejohn, 2010).
61. Smoky Valley, NV: Raser Technologies
No information is available on this project.
62. Soda Lake, NV: RAM Power
A former Sierra Geothermal Power property, the property reverted to RAM Power during SGP’s acquisition by RAM in 2010. No information is available on this 924 acre project.
63. Soda Lake, NV: Magma Energy
Magma received a $5 M DOE grant to perform sophisticated 3D seismic on the property. Production hole 45A-33, drilled in 2009, has been stimulated to produce 3 MW net of geothermal power. In 2010 Magma applied for permits to drill 7 temperature gradient wells and 3 production holes on the property. Magma reported this upgrade and expansion project is expected to produce 12 MW (Jennejohn, 2010).
64. Soda Lake East, NV: Magma Energy
This greenfield property lies approximately 8 km east of Magma’s producing Soda Lake geothermal plant. No information is available on this project.
65. Sodaville, NV: Oski Energy
No work has been performed on this property Oski acquired during the 2010 BLM lease auction.
66. Sodaville, NV: Terra-Gen
No information is available on this site.
67. Sulphur, NV: Caldera Geothermal
Acquired this 2,560 acre property from Sierra Geothermal by Caldera in 2010. Sierra Geothermal had reported that 12-27 MW could be produced from this property (Jennejohn, 2010).
68. Teels Marsh, NV: Caldera Geothermal
The Great Basin Center for Geothermal Energy identified a blind target at Teels Marsh as a likely spot for a geothermal system. A shallow (2 m) temperature survey uncovered two thermal anomalies along an active range front fault. In 2010, Caldera performed a hydroprobe survey that found 97°C and 78°C water at ~30 m depth under the northern and southern anomalies, respectively. Cation and silica geothermometer estimates from water samples are in the 155°C to 170°C range. Caldera plans additional work on the property in 2011.
69. Tungsten Mountain: ORMAT
The Edwards Creek project encompasses 4,160 acres alongside 9.6 km of the Clan Alpine Mountains range front fault. Areas of hydrothermal alteration occur along the fault, and boiling water was encountered at shallow depths by 23 exploration holes drilled by previous operators. Cation and silica geothermometer temperatures from well water suggest a ~175°C reservoir. The Great Basin Center identified a shallow (2m) thermal anomaly that is coincident with the location of the hot wells. Standard Steam Trust (SST) sold its leases to Ormat who had previously completed a detailed gravity survey which shows a ~60° degree southeast dip to the range front fault, which would place the reservoir at feasible depths beneath the leases. Ormat is permitting 5 intermediate depth TG holes with the BLM.
70. Upsal Hogback, NV: Magma Energy
The property lies just north of Magma’s producing Soda Lake geothermal plant. In 2010 Magma applied to drill 2 temperature gradient holes on the property. No additional information is available on this project.
71. Whitehorse, NV: Magma Energy
The Whitehorse Property (1,544 acres in Pershing and Humboldt Counties, Nevada) has several surface manifestations indicating geothermal potential, including siliceous sinter, hematite/argillic alteration, and warm springs aligning on probably NNE-striking structures. Two gas-discharging springs (Little and Big Alkali Springs) have anomalously high measured temperatures, varying between 20°C and 28.3°C. In 1981, Phillips Petroleum Company drilled two temperature gradient holes (91 and 166 m depths) in the southern portion of current leased area that yielded maximum recorded temperatures of 57.8°C and 34.5°C and temperature gradients of 220-269°C/km. Magma proposes magnetic, gravity, resistivity, and seismic surveys, and shallow temperature gradient drilling. No information is available on this project, which no longer appears on the Company website
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