Tulloch

Tulloch Dam Road, Jamestown, CA 95370

Plant Summary Information

Tulloch is ranked #65 out of 207 hydroelectric power plants in California in terms of total annual net electricity generation.

Tulloch is comprised of 3 generators and generated 11.2 GWh during the 3-month period between September 2025 to December 2025.

Plant Name	Tulloch
Utility Name	Oakdale&South San Joaquin Irrigation D.
Location	Tuolumne County, CA
Initial Operation Date	June 1958
Last Update	Dec 2025
Annual Generation	103.2 GWh
Annual Consumption	355.8 k MMBtu
Ranked #3,450 out of 13,081 Power Plants Nationwide
Ranked #319 out of 1,311 Water Power Plants Nationwide
Ranked #351 out of 1,606 California Power Plants
Ranked #65 out of 207 California Water Power Plants
Fuel Types	Water

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Summary Information
Plant Name	Tulloch (416)
Plant Address	Tulloch Dam Road, Jamestown, CA 95370
Utility	Oakdale&South San Joaquin Irrigation D. (13935)
Latitude, Longitude	37.87611, -120.605
Generation Dates on File	Jan 2001 to Dec 2025
Initial Operation Date	June 1958
Annual Generation	103.2 GWh
Fuel Types	Water

Federal Energy Regulatory Commission (FERC) Information
FERC Cogeneration Status	No
FERC Small Power Producer Status	No
FERC Exempt Wholesale Generator Status	No

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	Stanislaus River
Ash Impoundment	No
Transmission / Distribution Owner	Pacific Gas & Electric Co (14328) CA
Grid Voltage	115.00 kV
Energy Storage	No

* Data obtained from the 2025 EIA 860 Report

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	11.7 MW
Nameplate Power Factor	0.9
Summer Capacity	9 MW
Winter Capacity	8 MW
Minimum Load	1 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	June 1958
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	1H
Multiple Fuels	No

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	11.7 MW
Nameplate Power Factor	0.9
Summer Capacity	10 MW
Winter Capacity	8.5 MW
Minimum Load	1 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	June 1958
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	1H
Multiple Fuels	No

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	6.5 MW
Nameplate Power Factor	0.9
Summer Capacity	6.5 MW
Winter Capacity	6 MW
Minimum Load	1 MW
Uprate/Derate Completed	No

Status	Operating
First Operation Date	March 2012
Combined Heat & Power	No
Sector Name	IPP Non-CHP (2)
Energy Source	Water
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	1H
Multiple Fuels	No

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

Power plants with a similar annual net generation from Water.

Rank	Plant Name	Plant Location	Annual Generation
#309	Alcova	Alcova, WY	107.2 GWh
#310	Snoqualmie 2	Snoqualmie, WA	106.8 GWh
#311	Tallulah Falls	Tallulah Falls, GA	106.2 GWh
#312	Kortes	Sinclair, WY	105.7 GWh
#313	Jim Falls	Jim Falls, WI	105.3 GWh
#314	Main Canal Headworks	Coulee City, WA	105.2 GWh
#315	Sinclair Dam	Milledgeville, GA	105.0 GWh
#316	Dix Dam	Harrodsburg, KY	104.7 GWh
#317	Lower Malad	Hagerman, ID	104.4 GWh
#318	Tyee Lake Hydroelectric Facility	Wrangell, AK	103.4 GWh
#320	Berlin Gorham	Berlin, NH	101.1 GWh
#321	Cedar Creek (SC)	Great Falls, SC	101.6 GWh
#322	Anson Abenaki Hydros	Madison, ME	100.6 GWh
#323	Big Quinnesec 92	Iron Mountain, MI	100.0 GWh
#324	High Rock Hydro	Denton, NC	99.7 GWh
#325	Minidoka	Rupert, ID	98.8 GWh
#326	Wylie	Fort Mill, SC	98.6 GWh
#327	Harriman	Whitingham, VT	98.2 GWh
#328	Ocoee 2	Benton, TN	98.1 GWh
#329	Blewett	Lilesville, NC	98.0 GWh

Below are closest 20 power plants surrounding Tulloch.

Plant Name	Plant Location	Annual Generation	Distance
Ameresco San Joaquin	Linden, CA	24.8 GWh	20.6 mi
Angels	Angels Camp, CA	5.9 GWh	14 mi
Don Pedro	La Grange, CA	285.7 GWh	16 mi
Frankenheimer Power Plant	Oakdale, CA	11.3 GWh	11.5 mi
Hickman	Hickman, CA	3.6 GWh	19.2 mi
La Grange	La Grange, CA	6.6 GWh	16.8 mi
Moccasin	Moccasin, CA	307.6 GWh	17.3 mi
Moccasin Low Head Hydro Project	Moccasin, CA	3.3 GWh	16.5 mi
Murphys	Murphys, CA	14.8 GWh	20.6 mi
New Hogan Power Plant	Valley Springs, CA	5.7 GWh	22.1 mi
New Melones	Jamestown, CA	370.0 GWh	6.4 mi
Pacific-Ultrapower Chinese Station	Jamestown, CA	101.9 GWh	7 mi
Phoenix	Sonora, CA	4.9 GWh	18.6 mi
Robert O Schulz Solar Farm	Oakdale, CA	3.9 GWh	15.7 mi
Sierra Pacific Chinese Camp	Chinese Camp, CA	4.5 GWh	8.2 mi
Sierra Pacific Sonora	Standard, CA	42.7 GWh	16.9 mi
Sonora 1	Jamestown, CA	858.0 MWh	4.3 mi
Stanislaus	Vallecito, CA	199.8 GWh	22.2 mi
Turlock Lake	Hickman, CA	3.2 GWh	18.3 mi
Upper Dawson	La Grange, CA	8.9 GWh	17.2 mi