Geysers Unit 5-20

10350 Socrates Mine Road, Middletown, CA 95461

Plant Summary Information

Geysers Unit 5-20 is ranked #1 out of 63 geothermal power plants nationwide in terms of total annual net electricity generation.

Geysers Unit 5-20 is comprised of 12 generators and generated 1.5 TWh during the 3-month period between December 2023 to March 2024.

Plant Name	Geysers Unit 5-20
Utility Name	Geysers Power Co LLC
Location	Sonoma County, CA
Initial Operation Date	April 1971
Last Update	Mar 2024
Annual Generation	4.8 TWh
Annual Consumption	16.5 M MMBtu
Ranked #244 out of 11,249 Power Plants Nationwide
Ranked #1 out of 63 Geothermal Power Plants Nationwide
Ranked #3 out of 1,501 California Power Plants
Ranked #1 out of 30 California Geothermal Power Plants
Fuel Types	Geothermal

Map of Geysers Unit 5-20

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Monthly Net Generation for Geysers Unit 5-20

Geysers Unit 5-20 Details

Summary Information
Plant Name	Geysers Unit 5-20 (286)
Plant Address	10350 Socrates Mine Road Middletown, CA 95461
Utility	Geysers Power Co LLC (7160)
Latitude, Longitude	38.777, -122.745
Generation Dates on File	Jan 2001 to Mar 2024
Initial Operation Date	April 1971
Annual Generation	4.8 TWh
Fuel Types	Geothermal

Federal Energy Regulatory Commission (FERC) Information
FERC Cogeneration Status	No
FERC Small Power Producer Status	No
FERC Exempt Wholesale Generator Status	Yes
FERC Exempt Wholesale Generator Docket Number	99-109-000

Regulatory Information
Regulatory Status	Non-Regulated
NERC Region	WECC
Balancing Authority	California Independent System Operator (CISO)
NAICS Code	Utilities (22)
Sector	IPP Non-CHP (2)
Water Source	Wells
Ash Impoundment
Transmission / Distribution Owner	Pacific Gas & Electric Co (14328) CA
Grid Voltage	230.00 kV
Energy Storage	No

* Data obtained from the 2022 EIA 860 Report

Generator U5 Details Operating April 1971

Technology	Geothermal
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	55 MW
Nameplate Power Factor	1
Summer Capacity	45 MW
Winter Capacity	50 MW
Minimum Load	20 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	April 1971
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Geothermal
Startup Source	Geothermal
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Generator U6 Details Operating April 1971

Technology	Geothermal
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	55 MW
Nameplate Power Factor	1
Summer Capacity	45 MW
Winter Capacity	50 MW
Minimum Load	20 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	April 1971
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Geothermal
Startup Source	Geothermal
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Generator U7 Details Operating July 1972

Technology	Geothermal
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	55 MW
Nameplate Power Factor	1
Summer Capacity	40 MW
Winter Capacity	42 MW
Minimum Load	20 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	July 1972
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Geothermal
Startup Source	Geothermal
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Generator U8 Details Operating July 1972

Technology	Geothermal
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	55 MW
Nameplate Power Factor	1
Summer Capacity	40 MW
Winter Capacity	42 MW
Minimum Load	20 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	July 1972
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Geothermal
Startup Source	Geothermal
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Generator U11 Details Operating December 1975

Technology	Geothermal
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	110 MW
Nameplate Power Factor	1
Summer Capacity	68 MW
Winter Capacity	68 MW
Minimum Load	22 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	December 1975
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Geothermal
Startup Source	Geothermal
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No

Generator U12 Details Operating August 1979

Technology	Geothermal
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	110 MW
Nameplate Power Factor	1
Summer Capacity	51 MW
Winter Capacity	56 MW
Minimum Load	22 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	August 1979
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Geothermal
Startup Source	Geothermal
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Generator U14 Details Operating February 1980

Technology	Geothermal
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	113 MW
Nameplate Power Factor	1
Summer Capacity	60 MW
Winter Capacity	62 MW
Minimum Load	22 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	February 1980
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Geothermal
Startup Source	Geothermal
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Generator U13 Details Operating April 1980

Technology	Geothermal
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	138 MW
Nameplate Power Factor	1
Summer Capacity	65 MW
Winter Capacity	68 MW
Minimum Load	22 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	April 1980
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Geothermal
Startup Source	Geothermal
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Generator U17 Details Operating November 1982

Technology	Geothermal
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	118 MW
Nameplate Power Factor	1
Summer Capacity	60 MW
Winter Capacity	65 MW
Minimum Load	22 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	November 1982
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Geothermal
Startup Source	Geothermal
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Generator U18 Details Operating November 1983

Technology	Geothermal
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	118 MW
Nameplate Power Factor	1
Summer Capacity	60 MW
Winter Capacity	60 MW
Minimum Load	22 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	November 1983
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Geothermal
Startup Source	Geothermal
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Generator U16 Details Operating October 1985

Technology	Geothermal
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	118 MW
Nameplate Power Factor	1
Summer Capacity	60 MW
Winter Capacity	60 MW
Minimum Load	22 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	October 1985
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Geothermal
Startup Source	Geothermal
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Generator U20 Details Operating October 1985

Technology	Geothermal
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	118 MW
Nameplate Power Factor	1
Summer Capacity	50 MW
Winter Capacity	50 MW
Minimum Load	22 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	October 1985
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Geothermal
Startup Source	Geothermal
Solid Fuel Gasification	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Geysers Unit 5-20 Plant Owners

Owner Name	Address	Generator	Ownership
*We couldn't locate any owners for this plant*

Power Plants with Similar Net Generation

Power plants with a similar annual net generation from Geothermal.

Rank	Plant Name	Plant Location	Annual Generation
#2	McGinness Hills	Austin, NV	733.4 GWh
#3	McGinness Hills 3	Austin, NV	607.8 GWh
#4	Dixie Valley	Fallon, NV	512.5 GWh
#5	Calistoga Power Plant	Middletown, CA	501.4 GWh
#6	Coso Finance Partners	Inyokern, CA	448.2 GWh
#7	John L. Featherstone Plant	Calipatria, CA	401.7 GWh
#8	Coso Power Developers	Inyokern, CA	384.6 GWh
#9	Elmore Company	Calipatria, CA	383.8 GWh
#10	CE Leathers	Calipatria, CA	376.5 GWh
#11	Del Ranch Company	Calipatria, CA	374.6 GWh
#12	Tungsten Mountain	Fallon, NV	394.9 GWh
#13	Salton Sea Power Gen Co - Unit 4	Calipatria, CA	348.1 GWh
#14	Salton Sea Power Gen Co - Unit 3	Calipatria, CA	326.5 GWh
#15	Coso Energy Developers	Inyokern, CA	313.0 GWh
#16	Salton Sea Power LLC - Unit 5	Calipatria, CA	305.9 GWh
#17	Sonoma California Geothermal	Middletown, CA	291.4 GWh
#18	Geothermal 2	Middletown, CA	284.6 GWh
#19	Blundell	Milford, UT	283.5 GWh
#20	Vulcan-BN Geothermal Power Company	Calipatria, CA	273.9 GWh
#21	Steamboat Hills LP	Reno, NV	252.6 GWh

Nearby Power Plants

Below are closest 20 power plants surrounding Geysers Unit 5-20.

Plant Name	Plant Location	Annual Generation	Distance
Aidlin Geothermal Power Plant	Middletown, CA	93.8 GWh	8.3 mi
ASTI	Cloverdale, CA	1.5 GWh	12.5 mi
Beringer	Saint Helena, CA	1.7 GWh	23.3 mi
Bodega Avenue Solar LLC	Petaluma, CA	4.9 GWh	35.6 mi
Calistoga Power Plant	Middletown, CA	501.4 GWh	0.8 mi
Cloverdale Solar Center	Cloverdale, CA	2.4 GWh	14.9 mi
Dissigno Healdsburg FPV, LLC	Healdsburg, CA	6.5 GWh	14.8 mi
Geothermal 1	Middletown, CA	241.4 GWh	2.2 mi
Geothermal 2	Middletown, CA	284.6 GWh	2.6 mi
Keysight - Santa Rosa	Santa Rosa, CA	35.6 GWh	20.5 mi
Laguna Water Reclamation Facility	Santa Rosa, CA	15.0 GWh	28.2 mi
Lake Mendocino	Ukiah, CA	2.5 GWh	37.5 mi
Lavio Solar	Petaluma, CA	2.0 GWh	40.5 mi
Monticello Dam	Winters, CA	37.0 GWh	39.1 mi
Santa Rosa Junior College Petaluma Solar	Petaluma, CA	17.4 MWh	21.3 mi
Sonoma California Geothermal	Middletown, CA	291.4 GWh	1.1 mi
Sonoma Central Landfill Phase I	Petaluma, CA	9.9 GWh	32.8 mi
Sonoma Central Landfill Phase II	Petaluma, CA	10.1 GWh	32.8 mi
Stage Gulch Solar	Petaluma, CA	1.9 GWh	40.2 mi
Windsor Floating Solar	Windsor, CA	2.8 GWh	16.9 mi