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	Jun 2025
Annual Generation	190.4 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 \| 44% Solar \| 24.9% Water \| 11.3% Wind \| 10.6% Nuclear \| 9.7%

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
Henrietta Solar Project	Southern Power Co	Lemoore, CA	234 GWh	Jul 2016	Dec 2023	Solar
Gaskell West 1 Solar Facility	Southern Power Co	Lancaster, CA	26 GWh	Feb 2018	Dec 2023	Solar
RE Garland	Southern Power Co	Rosamond, CA	384 GWh	Oct 2016	Dec 2023	Solar
Morelos del Sol	Southern Power Co	Lost Hills, CA	30 GWh	Oct 2015	Dec 2023	Solar
RE Tranquillity	Southern Power Co	Cantua Creek, CA	450 GWh	Jun 2016	Dec 2023	Solar
Bishop Creek 5	Southern California Edison Co	Bishop, CA	14 GWh	May 1919	Dec 2023	Water
Bishop Creek 6	Southern California Edison Co	Bishop, CA	10 GWh	Feb 1913	Dec 2023	Water
Big Creek 1	Southern California Edison Co	Big Creek, CA	394 GWh	Oct 1913	Dec 2023	Water
Big Creek 2	Southern California Edison Co	Auberry, CA	296 GWh	Nov 1913	Dec 2023	Water
Fontana	Southern California Edison Co	Rialto, CA	6 GWh	Nov 1917	Dec 2023	Water
Bishop Creek 4	Southern California Edison Co	Bishop, CA	50 GWh	Aug 1905	Dec 2023	Water
Pebbly Beach Generating Station Hybrid	Southern California Edison Co	Avalon, CA	29 GWh	Jun 1958	Mar 2025	Distillate Fuel Oil : 94.6% Gaseous Propane : 5.4%
Mill Creek 3	Southern California Edison Co	Mill Creek, CA	11 GWh	Feb 1903	Dec 2023	Water
Santa Ana 3	Southern California Edison Co	Highlands, CA	424 MWh	Aug 1999	Dec 2023	Water
Mountainview Generating Station	Southern California Edison Co	Redlands, CA	2 TWh	Nov 2005	Mar 2025	Natural Gas
Rush Creek	Southern California Edison Co	June lake, CA	40 GWh	Sep 1916	Dec 2023	Water
Portal	Southern California Edison Co	Lakeshore, CA	21 GWh	Nov 1956	Dec 2023	Water
Poole	Southern California Edison Co	Lee Vining, CA	36 GWh	Apr 1924	Dec 2023	Water
Big Creek 3	Southern California Edison Co	Auberry, CA	587 GWh	Aug 1923	Mar 2025	Water
Big Creek 4	Southern California Edison Co	North Fork, CA	357 GWh	May 1951	Mar 2025	Water
Big Creek 8	Southern California Edison Co	Auberry, CA	153 GWh	Jul 1921	Dec 2023	Water
Big Creek 2A	Southern California Edison Co	Auberry, CA	326 GWh	Jul 1928	Mar 2025	Water
Kaweah 2	Southern California Edison Co	Three Rivers, CA	693 MWh	Aug 1929	Dec 2023	Water
Mammoth Pool	Southern California Edison Co	North Fork, CA	394 GWh	Feb 1960	Mar 2025	Water
Kern River 3	Southern California Edison Co	Kernville, CA	185 GWh	Feb 1921	Dec 2023	Water
Kern River 1	Southern California Edison Co	Bakersfield, CA	167 GWh	Apr 1907	Dec 2023	Water
Bishop Creek 2	Southern California Edison Co	Bishop, CA	36 GWh	Oct 1908	Dec 2023	Water
Bishop Creek 3	Southern California Edison Co	Bishop, CA	26 GWh	May 1913	Dec 2023	Water
Lundy	Southern California Edison Co	Lee Vining, CA	11 GWh	Nov 1911	Dec 2023	Water
Grapeland Hybrid	Southern California Edison Co	Rancho Cucamonga, CA	4 GWh	Aug 2007	Dec 2023	Natural Gas
Mira Loma Peaker	Southern California Edison Co	Ontario, CA	11 GWh	Aug 2007	Dec 2023	Natural Gas
Barre Peaker	Southern California Edison Co	Stanton, CA	22 GWh	Aug 2007	Nov 2023	Natural Gas
McGrath Peaker	Southern California Edison Co	Oxnard, CA	11 GWh	Oct 2012	Dec 2023	Natural Gas
J S Eastwood	Southern California Edison Co	Shaver Lake, CA	7 GWh	Nov 1987	Mar 2025	Water
Center Hybrid	Southern California Edison Co	Norwalk, CA	4 GWh	Aug 2007	Dec 2023	Natural Gas
Solar Photovoltaic Project #42	Southern California Edison Co	Tulare, CA	7 GWh	Oct 2012	Dec 2023	Solar
Robert O Schulz Solar Farm	South San Joaquin Irr District	Oakdale, CA	2 GWh	Apr 2008	Dec 2023	Solar
Forbestown	South Feather Water and Power Agency	Forbestown, CA	155 GWh	Sep 1963	Dec 2023	Water
Woodleaf	South Feather Water and Power Agency	Forbestown, CA	232 GWh	Oct 1963	Dec 2023	Water
Kelly Ridge	South Feather Water and Power Agency	Oroville, CA	65 GWh	Aug 1963	Dec 2023	Water
Sly Creek	South Feather Water and Power Agency	Forbestown, CA	41 GWh	Jun 1983	Dec 2023	Water
Blackjack Solar	South County Packing	King City, CA	7 GWh	Nov 2020	Dec 2023	Solar
Soscol Ferry Solar	Soscol Ferry Solar	Napa, CA	4 GWh	Nov 2020	Dec 2023	Solar
Santa Rosa Junior College Petaluma Solar	Sonoma County Junior College District	Petaluma, CA	2 GWh	Jun 2018	Dec 2023	Solar
2127 Harris Solar Project	Solarenewal LLC	Live Oak, CA	2 GWh	Mar 2014	Dec 2023	Solar
2081 Terzian Solar Project	Solarenewal LLC	Reedley, CA	2 GWh	Jan 2014	Dec 2023	Solar
2097 Helton Solar Project	Solarenewal LLC	Merced, CA	3 GWh	Mar 2014	Dec 2023	Solar
Orange Coast College PH2 Solar Project	Solar Star Coastal Pirate, LLC	Costa Mesa, CA	5 GWh	Apr 2022	Dec 2023	Solar : 88.9% Electricity used for energy storage : 11.1%
UC Davis South Campus	Solar Star California XXXII, LLC	Davis, CA	23 GWh	Feb 2015	Dec 2023	Solar
Tequesquite Landfill Solar PV Project	Solar Star California XXXI, LLC	Riverside, CA	13 GWh	Sep 2015	Dec 2023	Solar
Solar Star 2	Solar Star California XX, LLC	Rosamond, CA	728 GWh	Feb 2014	Mar 2025	Solar
Solar Star 1	Solar Star California XIX, LLC	Rosamond, CA	889 GWh	Feb 2014	Mar 2025	Solar
County of San Diego COC Hybrid	Solar Star California LXXVIII, LLC	San Diego, CA	3 GWh	Jun 2020	Dec 2023	Solar : 95.9% Electricity used for energy storage : 4.1%
Solar Oasis LLC	Solar Oasis, LLC	Palmdale, CA	51 GWh	Dec 2015	Dec 2023	Solar
Monticello Dam	Solano Irrigation District	Winters, CA	32 GWh	May 1983	Dec 2023	Water
Solano County Cogen Plant	Solano County	Fairfield, CA	8 GWh	May 1989	Dec 2023	Natural Gas
Soboba Community Solar Project	Soboba Band of Luiseno Indians	San Jacinto, CA	3 GWh	Jul 2016	Dec 2023	Solar
Lost Creek I	Snow Mountain Hydro LLC	Burney, CA	5 GWh	Nov 1989	Dec 2023	Water
Ponderosa Bailey Creek	Snow Mountain Hydro LLC	Manton, CA	3 GWh	Feb 1990	Dec 2023	Water
Cove Hydroelectric	Snow Mountain Hydro LLC	Burney, CA	14 GWh	Jan 1990	Dec 2023	Water
Burney Creek	Snow Mountain Hydro LLC	Burney, CA	6 GWh	Feb 1990	Dec 2023	Water
Firestone Walker Brewery - Phase 1	SkyHigh 2 Solar	Paso Robles, CA	4 GWh	Oct 2020	Dec 2023	Solar
Niagara Bottling - Rialto	SkyHigh 2 Solar	Rialto, CA	8 GWh	Nov 2021	Dec 2023	Solar
EMWD - Moreno Valley RWRF	SkyHigh 2 Solar	Moreno Valley, CA	5 GWh	Jun 2021	Dec 2023	Solar
California State Univ at Channel Islands	SkyHigh 2 Solar	Camarillo, CA	8 GWh	Nov 2021	Dec 2023	Solar
El Dorado County	SkyHigh 2 Solar	Placerville, CA	4 GWh	Feb 2021	Dec 2023	Solar
CSU San Jose State University	SkyHigh 2 Solar	San Jose, CA	4 GWh	Nov 2021	Dec 2023	Solar
EMWD - San Jacinto RES BCT	SkyHigh 2 Solar	San Jacinto, CA	3 GWh	Apr 2022	Nov 2023	Solar
EMWD - Sun City RWRF	SkyHigh 2 Solar	Menifee, CA	4 GWh	Jun 2021	Dec 2023	Solar
EMWD - San Jacinto RWRF NEM	SkyHigh 2 Solar	San Jacinto, CA	9 GWh	Jun 2021	Dec 2023	Solar
EMWD - Perris Valley RWRF	SkyHigh 2 Solar	Perris, CA	8 GWh	Jun 2021	Dec 2023	Solar
Sky River Wind Energy Center	Sky River Wind LLC	Tehachapi, CA	202 GWh	Jan 1991	Dec 2023	Wind
Silver State Solar Power South	Silver State Solar Power South, LLC	Primm Valley, NV	644 GWh	Oct 2015	Mar 2025	Solar
Silicon Valley Clean Water	Silicon Valley Clean Water	Redwood City, CA	5 GWh	Feb 2015	Dec 2023	Other Biomass Gas : 95.6% Natural Gas : 4.4%
Signal Hill West Unit	Signal Hill Petroleum, Inc	Signal Hill, CA	38 GWh	Jun 2004	Mar 2025	Other Gas
Sierra Pacific Sonora	Sierra Pacific Industries	Standard, CA	34 GWh	Jan 2001	Dec 2023	Wood/Wood Waste Solids
Sierra Pacific Quincy Facility	Sierra Pacific Industries	Quincy, CA	171 GWh	Nov 1986	Dec 2023	Wood/Wood Waste Solids
SPI Anderson 2	Sierra Pacific Industries	Anderson, CA	142 GWh	Jul 2015	Dec 2023	Wood/Wood Waste Solids : 99.8%
Sierra Pacific Lincoln Facility	Sierra Pacific Industries	Lincoln, CA	88 GWh	Feb 2004	Dec 2023	Wood/Wood Waste Solids
Sierra Pacific Industries (2042-RD)	Sierra Pacific Industries	Red Bluff, CA	17 GWh	Apr 2020	Dec 2023	Solar
Sierra Pacific Burney Facility	Sierra Pacific Industries	Burney, CA	94 GWh	Sep 1986	Dec 2023	Wood/Wood Waste Solids
Sierra Pacific Chinese Camp	Sierra Pacific Industries	Chinese Camp, CA	5 GWh	Feb 2022	Dec 2023	Solar
Sierra Nevada Brewing Co Hybrid	Sierra Nevada Brewing Co	Chico, CA	9 GWh	Apr 2005	Dec 2023	Natural Gas : 75.4% Solar : 24.6%
Whitewater Hill Wind Partners	Shell Wind Energy Inc.	North Palm Springs, CA	172 GWh	Sep 2002	Dec 2023	Wind
Cabazon Wind Partners	Shell Wind Energy Inc.	Cabazon, CA	118 GWh	Sep 2002	Dec 2023	Wind
Wheelabrator Shasta	Shasta Sustainable Resource Management, Inc.	Anderson, CA	278 GWh	Sep 1987	Mar 2025	Wood/Wood Waste Solids
Grossmont Hospital	Sharp Grossmont Hospital	La Mesa, CA	27 GWh	Jul 1983	Dec 2023	Natural Gas
Shafter Solar LLC	Shafter Solar LLC	Bakersfield, CA	48 GWh	Apr 2015	Dec 2023	Solar
Berry Placerita Cogen	Shadow Wolf Energy	Santa Clarita, CA	30 GWh	Feb 1990	Mar 2025	Natural Gas
Southeast Resource Recovery	SERRF Joint Powers Authority	Long Beach, CA	90 GWh	Jun 1988	Mar 2024	Non-biogenic Municipal Solid Waste : 51.7% Biogenic Municipal Solid Waste : 42.3% Natural Gas : 6.1%
Diablo Winds LLC	Sequitur Renewables, LLC	Livermore, CA	36 GWh	Nov 2004	Dec 2023	Wind
SEPV Sierra	SEPV Sierra, LLC	Lancaster, CA	14 GWh	Mar 2020	Dec 2023	Electricity used for energy storage : 53.9% Solar : 46.1%
SEPV Cuyama Hybrid	SEPV Cuyama, LLC	New Cuyama, CA	107 MWh	Nov 2023	Dec 2023	Solar
Welport Lease Project	Sentinel Peak Resources California, LLC	McKittrick, CA	21 GWh	Feb 1990	Dec 2023	Natural Gas
Dome Project	Sentinel Peak Resources California, LLC	Fellows, CA	49 GWh	Jul 1988	Dec 2023	Natural Gas
Sentinel Energy Center, LLC	Sentinel Energy Center LLC	Desert Hot Springs, CA	320 GWh	Apr 2013	Mar 2025	Natural Gas
Argus Cogen Plant	Searles Valley Minerals Operations Inc.	Trona, CA	256 GWh	Nov 1947	Mar 2025	Bituminous Coal : 94.3% Natural Gas : 5.7%
Sealed Air Madera Solar Project	Sealed Air Corporation	Madera, CA	6 GWh	Apr 2022	Dec 2023	Solar
Pacific Ethanol Madera Solar Array	Seaboard Energy California, LLC	Madera, CA	1 GWh	Jul 2018	Dec 2023	Solar
SE Athos II, LLC	SE Athos II, LLC	Desert Center, CA	516 GWh	Nov 2021	Mar 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#26	Arizona Public Service Company	23.0 TWh	75
#55	Arlington Valley, LLC	3.4 TWh	1
#35	Balancing Authority of Northern California	15.1 TWh	83
#48	Imperial Irrigation District	5.9 TWh	65
#33	Los Angeles Department of Water and Power	17.7 TWh	120
#22	Nevada Power Company	38.2 TWh	136
#54	New Harquahala Generating Company, LLC	3.5 TWh	1
#18	Salt River Project Agricultural Improvement and Power District	58.7 TWh	45
#58	Turlock Irrigation District	2.1 TWh	11
#44	Western Area Power Administration - Desert Southwest Region	8.1 TWh	30

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#3	Electric Reliability Council of Texas, Inc.	476.4 TWh	1,139
#5	Southwest Power Pool	297.0 TWh	762
#6	Southern Company Services, Inc. - Trans	252.0 TWh	393
#7	California Independent System Operator	190.4 TWh	1,943
#8	Tennessee Valley Authority	158.8 TWh	170
#10	Florida Power & Light Co.	148.6 TWh	159
#12	New York Independent System Operator	130.6 TWh	1,100
#13	Duke Energy Carolinas	111.4 TWh	556
#15	ISO New England	103.1 TWh	1,487
#16	Bonneville Power Administration	82.1 TWh	158