Geothermal Power Plants in the USA

Blue Mountain
Location: NV
Operator: Nevada Geothermal Power Inc
Configuration: 6 X 8.25 MW
Operation: 2009
T/G supplier: Ormat
EPC: Ormat
Quick facts: This $180mn project is on a 10,984ac tract in Humboldt Co, northern Nevada. A 33mi transmission tie-line was completed in May 2009. Also known as Faulkner.

Photograph courtesy of Power
Re-posted 21 Nov 2009

Desert Peak
Location: NV
Operator: CE Generation LLC
Configuration: 1 X 12.5 MW
Operation: 1985
T/G supplier: DeLaval
EPC: Phillips Petroleum Co

Photograph courtesy of MidAmerican Energy
Posted 24 Jul 2005

Galena
Location: NV
Operator: Ormat Technologies Inc
Configuration: 1 X 20 MW ST, 24.7 MW binary
Operation: 2006-2008
T/G supplier: Ormat
EPC: Ormat
Quick facts: Part of the 85 MW Steamboat complex. Power is sold to NV Power.

Photograph courtesy of Ormat
Posted 26 Mar 2011

Geysers
Location: CA
Operator: Calpine Corp
Configuration: ca 750 MW
Operation: various
T/G supplier: various
Quick facts: One of 22 plants at The Geysers, the world's largest geothermal complex.

Photograph courtesy of Calpine Corp
Posted 15 Aug 2004

Heber (North Brawley)
Location: CA
Operator: Ormat International Inc
Configuration: 5 X 10 MW OEC
Operation: 2010
T/G supplier: Ormat
EPC: PCL
Quick facts: The Heber complex in the Imperial Valley comprises five phases with a total of 17 Ormat energy converters and a steam turbine. North Brawley was placed in service on 9 Feb 2010. Electricity is sold to Southern California Edison and Southern California Public Power Agency.

Photograph courtesy of Ormat
Re-posted 11 Mar 2017

Hudson Ranch
Location: CA
Operator: EnergySource LLC
Configuration: 1 X 49.5 MW
Operation: 2012
T/G supplier: Fuji
EPC: AMEC, Performance Mechanical Contractors
Quick facts: The Hudson Ranch-I plant in Imperial Co was synchronized on 1 Mar 2012, the first new geothermal plant in the Salton Sea area in 20yrs. The Salton Sea GRA is a very hot and extremely permeable liquid-dominated resource, with high minerals concentration. Construction of the $400mn plant began in May 2010. The project has three production wells and four injection wells. All energy, capacity and environmental attributes are sold to Salt River Project for a term of 30yrs. In late 2011, SRP announced a second PPA for the 49.9-MW Hudson Ranch-II. The phase one project created more than 200 jobs during construction and will have an operating staff of about 55.

Photograph courtesy of EnergySource LLC
Posted 10 Mar 2012

Imperial Valley
Location: NV
Operator: CE Generation LLC
Configuration: various
Operation: various
T/G supplier: various

Photograph courtesy of MidAmerican Energy
Posted 24 Jul 2005

Leathers
Location: CA
Operator: CE Generation LLC
Configuration: 1 X 36 MW
Operation: 1989
T/G supplier: Fuji Electric

Photograph courtesy of National Renewable Energy Laboratory
Posted 2 Jun 2001

Lightning Dock
Location: NM
Operator: Cyrq Energy
Configuration: 4 MW
Operation: 2014
T/G supplier: Ormat
EPC: Ormat
Quick facts: This binary power plant near Animas commissioned in Dec 2013 as the first geothermal power plant in New Mexico. It was developed by Raser Technologies Inc, which after bankruptcy in 2011, re-emerged as Cyrq Energy. Electricity is sold to PNM. The facility ia also known as the Dale Burgett Geothermal Plant.

Photograph courtesy of Cyrq Energy
Posted 20 Sep 2014

Mammoth
Location: CA
Operator: Ormat Technologies Inc
Configuration: 8 X 5 MW
Operation: 1984-1990
T/G supplier: Rotoflow, Electric Machinery
Quick facts: In Aug 2010, Ormat became the sole owner of the land, power plants, and associated equipment comprising the Mammoth complex, including the rights to over 10,000ac of undeveloped federal lands.

Photograph courtesy of National Renewable Energy Laboratory
Posted 2 Jun 2001

McGinness Hills
Location: NV
Operator: Ormat Technologies Inc
Configuration: 2 X 15 MW
Operation: 2012
T/G supplier: Ormat
EPC: Ormat
Quick facts: The McGinness Hills geothermal plant is 10mi northeast of Austin in Lander County. It went commercial on 26 Jul 2012. Ormat has a 20yr PPA with NV Energy. With the McGinness Hills project, advanced techniques were implemented for the Ormat OECs that provide a 10%+ improvement in brine use efficiency.

Photograph courtesy of Ormat
Posted 10 Feb 2013

NCPA-2
Location: CA
Operator: Northern California Power Agency
Configuration: 2 X 55 MW
Operation: 1985-1986
T/G supplier: Ansaldo
EPC: Dravo

Photograph courtesy of Power
Posted 19 Feb 2005

Paisley
Location: OR
Operator: Surprise Valley Electrification Corp
Configuration: 1 X 3.1 MW
Operation: 2015
T/G supplier: TAS Energy Inc, Hyundai
EPC: TAS Energy Inc, Colorado TBC
Quick facts: In 1980, the Colahan Ranch in Paisley drilled an irrigation well that intersected a geological faultline. This supplied hot water, which was initially used for seasonal irrigation, but the owners completed a feasibility suty in 2008 to see whether the resouce could be used for power genration. SVE took the project forward using $2mn in DOE American Recovery Act grant funds and an Oregon Dept of Energy Business Energy Tax Credit for up to $5mn. The utility was also approved to convert a Cooperative Finance Corp loan to 1.25% Renewable Energy Bonds. Two production wells and a reinjection well were drilled and commissioning and start up activities began in May 2014. The $21mn unit was first synchronised on 9 Jun 2014 at about double the original $12mn estimated cost. A new 69kVa transmission line and substation was constructed by Wasatch Electric.

Photograph courtesy of Surprise Valley Electrification Corp
Posted 18 Feb 2015

Puna
Location: HI
Operator: Ormat Technologies Inc
Configuration: 10 X 3 MW
Operation: 1993
T/G supplier: Ormat
EPC: Ormat
Quick facts: This was Hawaii's first commercial geothermal power plant. It is located on the lower east rift zone of Kilauea Volcano atop lava flows erupted in 1955. As of 2002, the plant had three production wells drilled to depths between 1,220m and 1,830 m. Geothermal steam and brine is brought to the surface and routed through binary generating modules. Brine, condensed steam, and other gases are injected back into the ground via three wells to depths between 1,830m and 2,134m.

Photograph courtesy of U.S. Geological Survey
Posted 7 Jan 2007

Raft River
Location: ID
Operator: US Geothermal Inc
Configuration: 16 MW
Operation: 2007
T/G supplier: Ormat
EPC: Ormat
Quick facts: The Raft River geothermal resource is located in Idaho, 200mi southeast of Boise at the site of a former DOE installation. Their 7-MW plant was the first commercial-size, binary-cycle geothermal plant in the world and was successfully constructed, and tested at this site in 1980-1982. Over $40mn was invested in studies and geothermal infrastructure. US Geothermal owns and/or leases approximately 10.8mi² in the area. The Raft River project has a 10-MW, 20yr PPA with Idaho Power Co and US Geothermal has reserved 36 MW of capacity on a 138kV transmission line adjacent to the project. Construction began in Jun 2006 and the plant reached full power on 3 Jan 2008. The site has 5 production wells and 4 injection wells.

Photograph courtesy of Power
Posted 12 Jan 2008

San Emidio Rebuild-I
Location: ID
Operator: US Geothermal Inc
Configuration: 9 MW
Operation: 2012
T/G supplier: TAS Energy Inc
EPC: SAIC Energy, Environment & Infrastructure
Quick facts: The original Ormat EC units at San Emido near Galena were changed out for a single TAS system. This started construction in 2010 and went commercial on 25 May 2012. The cost was $29.5mn.

Photograph courtesy of US Geothermal Inc
Posted 16 Nov 2014

Sonoma
Location: CA
Operator: Calpine Corp
Configuration: 1 X 78 MW
Operation: 1983
T/G supplier: MHI, Melco
EPC: S&W
Quick facts: This is one of 22 power stations at The Geysers, the largest geothermal complex in the world.

Photograph by Stepheng3 (wikipedia)
Posted 20 Sep 2014

Stillwater-1
Location: NV
Operator: Amp Resources
Configuration: 14 X 1.25 MW
Operation: 1989 (ret)
T/G supplier: Ormat
EPC: Ormat
Quick facts: The original Stillwater facility was taken out of service by new owner Enel Green Power North America and replaced with a new 32-MW installation in 2009. Photo is dated Jun 1989.

Photograph by Larry Garside and courtesy of Nevada Bureau of Mines and Geology
Posted 21 Sep 2011

 
West Ford Flat
Location: CA
Operator: Calpine Corp
Configuration: 2 X 13 MW
Operation: 1988
T/G supplier: MHI, Electric Machinery
EPC: S&W, TIC
Quick facts: This is one of 22 power stations at The Geysers, the largest geothermal complex in the world.

Photograph courtesy of Power
Posted 13 Aug 2005

Thermo
Location: UT
Operator: Cyrq Energy
Configuration: 10 MW
Operation: 2008-2011
T/G supplier: UTC Power, Ormat
EPC: Raser, Ormat
Quick facts: Also known as Orrin Hatch, this was the first new geothermal plant in Utah in over 20yrs. The Milford site in Beaver Co was selected as it was on private lands and had an existing production well. The Phase-I plant cost about $35mn and was built in less than 6mos with 50 modular, PureCycle binary units from UTC. This was the launch, commercial-scale application for these machines. Thermo was extended with a pair of 5-MW Ormat Energy Converter systems in 2011. There is enought heat to run the UTC equipment or the Ormat systems, but not both at once.

Photograph courtesy of Cyrq Energy
Re-posted 20 Sep 2014

Abbreviations

Data: industcards, Platts UDI World Electric Power Plants Data Base

Updated 11-Mar-2017

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