California Independent System Operator

Balancing Authority Summary Information

California Independent System Operator is ranked #7 out of 65 balancing authorities in terms of total annual electricity generation.

Balancing Authority	California Independent System Operator
States	Arizona California Nevada
Last Update	Nov 2024
Annual Generation	192.0 TWh
Power Plants	1,943
Utilities	893
Ranked #7 out of 65 in terms of net annual generation
Ranked #7 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 45.4% Solar \| 23.1% Water \| 12% Wind \| 10.1% Nuclear \| 9.1%

Map of California Independent System Operator

Register Now for Comprehensive Access

Subscribe now to access all power plant data, utility information, FERC EQR data, and more for California Independent System Operator.

Create Your Account Today

Daily Net Generation for California Independent System Operator for the past 3 Years

Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Corona	Metropolitan Water District of S CA	Corona, CA	4 GWh	Jul 1983	Dec 2023	Water
Grossmont Hospital	Sharp Grossmont Hospital	La Mesa, CA	27 GWh	Jul 1983	Dec 2023	Natural Gas
Temescal	Metropolitan Water District of S CA	Corona, CA	7 GWh	Jun 1983	Dec 2023	Water
Camanche	East Bay Municipal Util Dist	Clements & Wallace, CA	58 GWh	Jun 1983	Dec 2023	Water
Sly Creek	South Feather Water and Power Agency	Forbestown, CA	41 GWh	Jun 1983	Dec 2023	Water
Monticello Dam	Solano Irrigation District	Winters, CA	32 GWh	May 1983	Dec 2023	Water
Gosselin Hydro Plant	Humboldt Bay Mun Water Dist	Ruth, CA	6 GWh	May 1983	Apr 2023	Water
Perris	Metropolitan Water District of S CA	Perris, CA	5 GWh	Apr 1983	Dec 2023	Water
Kerckhoff 2	Pacific Gas & Electric Co.	Auberry, CA	390 GWh	Apr 1983	Sep 2024	Water
Frankenheimer Power Plant	Turlock Irrigation District	Oakdale, CA	3 GWh	Feb 1983	Oct 2023	Water
San Gorgonio Farms Wind Farm	San Gorgonio Farms Inc	Whitewater, CA	62 GWh	Feb 1983	Dec 2023	Wind
Geothermal 1	Northern California Power Agny	Middletown, CA	250 GWh	Dec 1982	Sep 2024	Geothermal
W E Warne	California Dept. of Water Resources	Gorman, CA	217 GWh	Oct 1982	Dec 2023	Water
B Braun Medical	B Braun Medical Inc	Irvine, CA	27 GWh	Oct 1982	Dec 2023	Natural Gas
Cymric 36W Cogen	Chevron USA Inc	McKittrick, CA	54 GWh	Sep 1982	Dec 2023	Natural Gas
Oxnard	Procter&Gamble Paper Products Co-Oxnard	Oxnard, CA	482 GWh	Jun 1982	Sep 2024	Natural Gas
Taft 26C Cogen	Chevron USA Inc	Taft, CA	58 GWh	Jun 1982	Sep 2024	Natural Gas
Santa Clara Cogen	City of Santa Clara - (CA)	Santa Clara, CA	15 GWh	May 1982	Dec 2023	Natural Gas
Oak Creek Energy Systems I	Terra-Gen Operating Co-Wind	Mojave, CA	38 GWh	May 1982	Dec 2023	Wind
Parker	Merced Irrigation District	Snelling, CA	4 GWh	Mar 1982	Oct 2023	Water
Victory Garden (Tehachapi)	Wind Stream Operations LLC	Tehachapi, CA	25 GWh	Nov 1981	Dec 2023	Wind
Volta 2	Pacific Gas & Electric Co.	Manton, CA	3 GWh	Oct 1981	Dec 2023	Water
Yorba Linda	Metropolitan Water District of S CA	Yorba Linda, CA	5 GWh	Oct 1981	Sep 2023	Water
Oxnard Wastewater Treatment Plant	Oxnard City of	Oxnard, CA	5 GWh	Jul 1981	Sep 2024	Other Biomass Gas : 88.8% Natural Gas : 11.2%
San Dimas	Metropolitan Water District of S CA	San Dimas, CA	25 GWh	May 1981	Nov 2023	Water
Foothill Feeder	Metropolitan Water District of S CA	Castaic, CA	20 GWh	Mar 1981	Dec 2023	Water
Rollins	Nevada Irrigation District	Colfax, CA	73 GWh	Jul 1980	Dec 2023	Water
Lake Mathews	Metropolitan Water District of S CA	Riverside, CA	5 GWh	Jul 1980	Oct 2023	Water
Volta 1	Pacific Gas & Electric Co.	Manton, CA	3 GWh	Mar 1980	Sep 2023	Water
Loma Linda University Cogen	Loma Linda University	Loma Linda, CA	55 GWh	Jan 1980	Sep 2024	Natural Gas
South	Pacific Gas & Electric Co.	Manton, CA	18 GWh	Nov 1979	Dec 2023	Water
Coleman PH	Pacific Gas & Electric Co.	Anderson, CA	34 GWh	May 1979	Dec 2023	Water
Dynegy Oakland Power Plant	Dynegy Oakland, LLC	Oakland, CA	9 GWh	Oct 1978	Aug 2024	Jet Fuel
Martinez Sulfuric Acid Regeneration Plt	Eco Services Corp.	Martinez, CA	16 GWh	Dec 1977	Dec 2023	Waste Heat
Long Beach Generation LLC	Long Beach Generation LLC	Long Beach, CA	10 GWh	Nov 1976	Dec 2023	Natural Gas
Dominguez Plant	Eco Services Corp.	Long Beach, CA	14 GWh	Jul 1976	Dec 2023	Waste Heat
Glenarm	City of Pasadena - (CA)	Pasadena, CA	41 GWh	Dec 1975	Dec 2023	Natural Gas
Green Power I	FPL Energy Green Power	North Palm Springs, CA	318 MWh	Jun 1975	Dec 2022	Wind
Ellwood	Ellwood Power, LLC	Goleta, CA	4 GWh	Jul 1974	Dec 2023	Natural Gas
Panoche Peaker	Wellhead Services, Inc	Firebaugh, CA	2 GWh	Jul 1973	Dec 2023	Natural Gas
Devil Canyon	California Dept. of Water Resources	San Bernardino, CA	905 GWh	Nov 1972	Sep 2024	Water
Ormond Beach	Ormond Beach Power, LLC	Oxnard, CA	69 GWh	Jul 1971	Sep 2024	Natural Gas
Geysers Unit 5-20	Geysers Power Co LLC	Middletown, CA	4 TWh	Mar 1971	Sep 2024	Geothermal
Narrows 2	Yuba County Water Agency	Browns Valley, CA	277 GWh	Nov 1969	Dec 2023	Water
Colgate	Yuba County Water Agency	Dobbins, CA	1 TWh	Sep 1969	Sep 2024	Water
Belden	Pacific Gas & Electric Co.	Belden, CA	333 GWh	Aug 1969	Sep 2024	Water
Moccasin	City & County of San Francisco	Moccasin, CA	268 GWh	Jul 1969	Sep 2024	Water
Altamont Gas Recovery	WM Renewable Energy LLC	Livermore, CA	39 GWh	Feb 1969	Dec 2023	Landfill Gas
Edward C Hyatt	California Dept. of Water Resources	Oroville, CA	2 TWh	Feb 1968	Sep 2024	Water
Thermalito	California Dept. of Water Resources	Oroville, CA	350 GWh	Jan 1968	Sep 2024	Water
Dynegy Moss Landing Power Plant Hybrid	Dynegy -Moss Landing LLC	Moss Landing, CA	5 TWh	Nov 1967	Sep 2024	Natural Gas
Exchequer	Merced Irrigation District	Snelling, CA	251 GWh	Jun 1967	Dec 2023	Water
McSwain	Merced Irrigation District	Snelling, CA	46 GWh	Jun 1967	Oct 2023	Water
W R Gianelli	California Dept. of Water Resources	Gustine, CA	41 GWh	Feb 1967	Sep 2024	Water
R C Kirkwood	City & County of San Francisco	Groveland, CA	435 GWh	Jan 1967	Sep 2024	Water
French Meadows	Placer County Water Agency	Foresthill, CA	67 GWh	Sep 1966	Dec 2023	Water
Middle Fork	Placer County Water Agency	Foresthill, CA	476 GWh	Sep 1966	Sep 2024	Water
Oxbow (CA)	Placer County Water Agency	Foresthill, CA	14 GWh	Sep 1966	Dec 2023	Water
Ralston	Placer County Water Agency	Foresthill, CA	460 GWh	Sep 1966	Dec 2023	Water
Drum 2	Pacific Gas & Electric Co.	Alta, CA	271 GWh	Nov 1965	Dec 2023	Water
James B Black	Pacific Gas & Electric Co.	Big Bend, CA	377 GWh	Nov 1965	Sep 2024	Water
Chicago Park	Nevada Irrigation District	Colfax, CA	135 GWh	Oct 1965	Dec 2023	Water
Dutch Flat 2	Nevada Irrigation District	Dutch Flat, CA	47 GWh	Oct 1965	Dec 2023	Water
Pit 7	Pacific Gas & Electric Co.	Montgomery Creek, CA	263 GWh	Aug 1965	Sep 2024	Water
Pit 6	Pacific Gas & Electric Co.	Montgomery Creek, CA	278 GWh	Jul 1965	Oct 2023	Water
Chili Bar	Sacramento Municipal Util Dist	Placerville, CA	43 GWh	Feb 1965	Dec 2023	Water
Woodleaf	South Feather Water and Power Agency	Forbestown, CA	232 GWh	Oct 1963	Dec 2023	Water
Forbestown	South Feather Water and Power Agency	Forbestown, CA	155 GWh	Sep 1963	Dec 2023	Water
Kelly Ridge	South Feather Water and Power Agency	Oroville, CA	65 GWh	Aug 1963	Dec 2023	Water
Stanislaus	Pacific Gas & Electric Co.	Vallecito, CA	334 GWh	Feb 1963	Dec 2023	Water
De Sabla	Pacific Gas & Electric Co.	Magalia, CA	47 GWh	Jan 1963	Dec 2023	Water
Kings River PH	Pacific Gas & Electric Co.	Balch Camp, CA	207 GWh	Feb 1962	Dec 2023	Water
Dion R Holm	City & County of San Francisco	Groveland, CA	509 GWh	Jul 1960	Sep 2024	Water
Mammoth Pool	Southern California Edison Co	North Fork, CA	521 GWh	Feb 1960	Sep 2024	Water
Butt Valley	Pacific Gas & Electric Co.	Belden, CA	147 GWh	Nov 1958	Dec 2023	Water
Haas	Pacific Gas & Electric Co.	Balch Camp, CA	541 GWh	Nov 1958	Sep 2024	Water
Balch 2	Pacific Gas & Electric Co.	Balch Camp, CA	490 GWh	Oct 1958	Dec 2023	Water
Caribou 2	Pacific Gas & Electric Co.	Belden, CA	338 GWh	Oct 1958	Sep 2024	Water
Poe	Pacific Gas & Electric Co.	Storrie, CA	590 GWh	Sep 1958	Sep 2024	Water
Pebbly Beach Generating Station Hybrid	Southern California Edison Co	Avalon, CA	29 GWh	Jun 1958	Sep 2024	Distillate Fuel Oil : 94.6% Gaseous Propane : 5.4%
AES Huntington Beach LLC	AES Huntington Beach LLC	Huntington Beach, CA	76 GWh	May 1958	Sep 2024	Natural Gas
Tulloch	Oakdale&South San Joaquin Irrigation D.	Jamestown, CA	125 GWh	May 1958	Dec 2023	Water
C&H Sugar Plant	C&H Sugar Company Inc	Crockett, CA	39 GWh	Sep 1957	Sep 2024	Purchased Steam
Donnells	Oakdale&South San Joaquin Irrigation D.	None, CA	348 GWh	May 1957	Dec 2023	Water
Beardsley	Oakdale&South San Joaquin Irrigation D.	None, CA	83 GWh	Apr 1957	Dec 2023	Water
Portal	Southern California Edison Co	Lakeshore, CA	21 GWh	Nov 1956	Dec 2023	Water
AES Alamitos LLC	AES Alamitos LLC	Long Beach, CA	167 GWh	Aug 1956	Sep 2024	Natural Gas
Pit 4	Pacific Gas & Electric Co.	Big Bend, CA	311 GWh	Jun 1955	Sep 2024	Water
AES Redondo Beach LLC	AES Redondo Beach LLC	Redondo Beach, CA	256 GWh	Sep 1954	Dec 2023	Natural Gas
Murphys	Utica Water & Power Authority	Murphys, CA	18 GWh	Feb 1954	Dec 2023	Water
SJ/SC WPCP	San Jose/Santa Clara Water P C	San Jose, CA	83 GWh	Jan 1953	Sep 2024	Other Biomass Gas : 51.0% Natural Gas : 48.8%
Big Creek 4	Southern California Edison Co	North Fork, CA	428 GWh	May 1951	Sep 2024	Water
Rock Creek	Pacific Gas & Electric Co.	Storrie, CA	559 GWh	Feb 1950	Sep 2024	Water
Cresta	Pacific Gas & Electric Co.	Storrie, CA	122 GWh	Oct 1949	Dec 2023	Water
West Point PH	Pacific Gas & Electric Co.	Pioneer, CA	82 GWh	Oct 1948	Dec 2023	Water
Electra	Pacific Gas & Electric Co.	Jackson, CA	338 GWh	May 1948	Sep 2024	Water
Argus Cogen Plant	Searles Valley Minerals Operations Inc.	Trona, CA	254 GWh	Nov 1947	Sep 2024	Bituminous Coal : 90.5% Natural Gas : 9.5%
Pit 5	Pacific Gas & Electric Co.	Big Bend, CA	368 GWh	Mar 1944	Sep 2024	Water
Dutch Flat	Pacific Gas & Electric Co.	Alta, CA	112 GWh	Feb 1943	Dec 2023	Water
Narrows PH	Yuba County Water Agency	Grass Valley, CA	73 GWh	Nov 1942	Dec 2023	Water

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#28	Arizona Public Service Company	22.0 TWh	75
#53	Arlington Valley, LLC	3.6 TWh	1
#36	Balancing Authority of Northern California	15.2 TWh	83
#48	Imperial Irrigation District	5.7 TWh	65
#33	Los Angeles Department of Water and Power	16.0 TWh	120
#22	Nevada Power Company	37.8 TWh	136
#56	New Harquahala Generating Company, LLC	2.9 TWh	1
#18	Salt River Project Agricultural Improvement and Power District	58.9 TWh	45
#57	Turlock Irrigation District	2.3 TWh	11
#41	Western Area Power Administration - Desert Southwest Region	8.5 TWh	30

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#3	Electric Reliability Council of Texas, Inc.	462.2 TWh	1,139
#5	Southwest Power Pool	290.4 TWh	762
#6	Southern Company Services, Inc. - Trans	248.1 TWh	393
#7	California Independent System Operator	192.0 TWh	1,943
#9	Tennessee Valley Authority	157.6 TWh	170
#10	Florida Power & Light Co.	147.6 TWh	159
#12	New York Independent System Operator	129.8 TWh	1,100
#13	Duke Energy Carolinas	110.9 TWh	556
#15	ISO New England	103.1 TWh	1,487
#16	Bonneville Power Administration	80.0 TWh	158