California Independent System Operator

Balancing Authority Summary Information

California Independent System Operator is ranked #7 out of 64 balancing authorities in terms of total annual electricity generation.

Balancing Authority	California Independent System Operator
States	Arizona California Nevada New Mexico
Last Update	Oct 2026
Annual Generation	168.7 TWh
Power Plants	2,170
Utilities	1,001
Ranked #7 out of 64 in terms of net annual generation
Ranked #14 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 32% Solar \| 30.9% Water \| 12.2% Wind \| 11.8% Nuclear \| 11.2% Coal \| 0%

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

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Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
North Kern State Prison Phase II	SunE P11L Holdings, LLC	Delano, CA	7 GWh	Aug 2012	Dec 2025	Solar
North Lancaster Ranch	AES Distributed Energy	Lancaster, CA	39 GWh	Nov 2016	Dec 2025	Solar
North Palm Springs 1A	Altus Power America Management, LLC	Palm Springs, CA	5 GWh	Mar 2012	Dec 2025	Solar
North Palm Springs 4A	Altus Power America Management, LLC	Palm Springs, CA	8 GWh	Sep 2012	Dec 2025	Solar
North Rosamond Solar LLC	North Rosamond Solar, LLC	Rosamond, CA	361 GWh	May 2019	Jul 2026	Solar
North Sky River Energy LLC	North Sky River Energy LLC	Weldon, CA	365 GWh	Nov 2012	Dec 2025	Wind
North Star Solar	Southern Power Co	Mendota, CA	133 GWh	May 2015	Dec 2025	Solar
Northern Orchard Solar PV, LLC	RWE Clean Energy	Taft, CA	416 GWh	Jun 2025	Jul 2026	Solar
Nunn	CD US Solar MT 2 LLC	Apple Valley, CA	1 GWh	Jun 2013	Dec 2025	Solar
Oak Creek Energy Systems I	Terra-Gen Operating Co-Wind	Mojave, CA	57 GWh	May 1982	Dec 2025	Wind
Oakley Solar Project	Oakley Solar Project LLC	Oakley, CA	2 GWh	May 2013	Dec 2025	Solar
Oaks HOA	Onyx Asset Services Group	Ione, CA	2 GWh	Mar 2025	Dec 2025	Solar
Oasis Alta	Terra-Gen Operating Co-Wind	Mojave, CA	49 GWh	Mar 2021	Dec 2025	Wind
Oasis Wind	Terra-Gen Operating Co-Wind	Mojave, CA	221 GWh	Nov 2004	Dec 2025	Wind
Oberon II Solar Project	Intersect USA, LLC	Desert Center, CA	563 GWh	Aug 2023	Jul 2026	Solar
Oberon Solar Project	Intersect USA, LLC	Desert Center, CA	559 GWh	Aug 2023	Jul 2026	Solar
Ocotillo Express LLC	Pattern Operators LP	Ocotillo, CA	411 GWh	Nov 2012	Jul 2026	Wind
Ocotillo Wells	Conductive Power	Borrego Springs, CA	101 GWh	Aug 2023	Jul 2026	Solar
OES Biogas Power	Organic Energy Solutions, Inc.	San Bernardino, CA	904 MWh	-	Dec 2025	Other Biomass Gas
OK Produce Fresno Carport	OK Produce	Fresno, CA	3 GWh	Dec 2018	Dec 2025	Solar
Olsen	Olsen Power Partners	Whitmore, CA	15 GWh	Dec 1989	Dec 2025	Water
Oltmans SCE at Champagne	California PV Energy LLC	Ontario, CA	2 GWh	Nov 2013	Dec 2025	Solar
Oltmans SCE at Jurupa	California PV Energy LLC	Ontario, CA	2 GWh	Nov 2013	Dec 2025	Solar
One Market Plaza	Paramount Group Inc	San Francisco, CA	1 GWh	Nov 2003	Dec 2025	Natural Gas
One Ten Partners PV	One Ten Partners, LLC	Palmdale, CA	6 GWh	Aug 2017	Dec 2025	Solar
Open Sky Dairy	Renewable Solar, Inc	Riverdale, CA	419 MWh	Jun 2024	Dec 2025	Solar
Open Sky Ranch Inc	Bravo REC Management LLC	Riverdale, CA	4 GWh	Jun 2024	Dec 2025	Solar
Orange Coast College PH2 Solar Project	Solar Star Coastal Pirate, LLC	Costa Mesa, CA	4 GWh	Apr 2022	Dec 2025	Solar
Orange Grove Peaking Facility	Orange Grove Energy LP	Pala, CA	9 GWh	May 2010	Dec 2025	Natural Gas
Orion Solar I	Orion Solar I LLC	Arvin, CA	27 GWh	Mar 2014	Dec 2025	Solar
Orion Solar II	Orion Solar II, LLC	Arvin, CA	16 GWh	May 2014	Dec 2025	Solar
Ormond Beach	Ormond Beach Power, LLC	Oxnard, CA	18 GWh	Jul 1971	Jul 2026	Natural Gas
Oro Loma	RWE Clean Energy	Oro Loma, CA	49 GWh	Dec 2016	Dec 2025	Solar
Oroville Cogeneration, LLC	Apex Power Generation Corp.	Oroville, CA	116 MWh	Dec 1989	Dec 2025	Natural Gas
Otay Mesa Generating Project	Otay Mesa Energy Center LLC	San Diego, CA	1 TWh	Sep 2009	Jul 2026	Natural Gas
Otoe Solar Power Generation Station 1 LL	AES Distributed Energy	Apple Valley, CA	3 GWh	Nov 2013	Dec 2025	Solar
Oxbow (CA)	Placer County Water Agency - (CA)	Foresthill, CA	23 GWh	Sep 1966	Dec 2025	Water
Oxnard	Procter&Gamble Paper Products Co-Oxnard	Oxnard, CA	422 GWh	Jun 1982	Jul 2026	Natural Gas
Oxnard Paper Mill	New-Indy, Oxnard LLC	Oxnard, CA	183 GWh	Feb 1986	Jul 2026	Natural Gas
Oxnard Wastewater Treatment Plant	City of Oxnard - (CA)	Oxnard, CA	3 GWh	Jul 1981	Jul 2026	Other Biomass Gas : 99.9%
P66 Rodeo Solar	P66 Rodeo Solar	Rodeo, CA	57 GWh	Mar 2023	Jul 2026	Solar
Pacific Ethanol Madera Solar Array	Seaboard Energy California, LLC	Madera, CA	4 GWh	Jul 2018	Dec 2025	Solar
Pacific-Ultrapower Chinese Station	IHI Power Services Corp	Jamestown, CA	101 GWh	Sep 1986	Jul 2026	Wood/Wood Waste Solids : 98.0% Gaseous Propane : 2.0%
Pacific Wind LLC	EDF Renewable Asset Holdings, Inc.	Rosamond, CA	295 GWh	Jul 2012	Dec 2025	Wind
Painted Hills Wind Park	Terra-Gen Operating Co-Wind	Whitewater, CA	161 GWh	Oct 1985	Jul 2026	Wind
Palm Springs DAC PV	Palm Springs USD	Palm Springs, CA	1 GWh	Mar 2021	Dec 2025	Solar
Palo Verde College	Scale Sustainable I, LLC	Blythe, CA	2 GWh	Jul 2009	Dec 2025	Solar
Palomar Energy	San Diego Gas & Electric Co	Escondido, CA	1 TWh	Sep 2005	Jul 2026	Natural Gas
Panoche Energy Center	Panoche Energy Center, LLC	Firebaugh, CA	731 GWh	May 2009	Jul 2026	Natural Gas
Panoche Valley Solar Farm	RWE Clean Energy	Paicines, CA	243 GWh	Dec 2017	Jul 2026	Solar
Pardee	East Bay Municipal Util Dist - (CA)	Valley Springs, CA	80 GWh	Jun 1930	Dec 2025	Water
Park Meridian #1	Altus Power America Management, LLC	Riverside, CA	3 GWh	Feb 2015	Dec 2025	Solar
Parker	Merced Irrigation District	Snelling, CA	6 GWh	Mar 1982	Jun 2025	Water
Parnassus Central Utility Plant	University of California-San Francisco	San Francisco, CA	67 GWh	Dec 1995	Jul 2026	Natural Gas
Paso Robles - Municipal Airport	Onyx Asset Services Group	Paso Robles, CA	8 GWh	Dec 2023	Dec 2025	Solar
Pastoria Energy Facility, LLC	Calpine Corp - Pastoria Energy Center	Lebec, CA	3 TWh	Apr 2005	Jul 2026	Natural Gas
Pastoria Solar	Pastoria Solar Energy Company, LLC	Lebec, CA	32 GWh	-	Jul 2026	Solar
Paulsell	Crow Creek Solar, LLC	Crows Landing, CA	48 GWh	May 2024	Jul 2026	Solar
PE Berkeley	Berkeley Cogeneration Facility	Berkeley, CA	134 GWh	May 1987	Jun 2026	Natural Gas
Pebbly Beach Generating Station Hybrid	Southern California Edison Co	Avalon, CA	28 GWh	Jun 1958	Jul 2026	Distillate Fuel Oil : 95.4% Gaseous Propane : 4.6%
PFMG Solar Grossmont Helix LLC	Altus Power America Management, LLC	La Mesa, CA	2 GWh	Apr 2018	Dec 2025	Solar
Phoenix	Pacific Gas & Electric Co.	Sonora, CA	5 GWh	Jan 1940	Dec 2025	Water
Phoenix Wind Power LLC	Avangrid Power LLC	North Palm Springs, CA	5 GWh	May 1999	Dec 2025	Wind
Pine Flat	Kings River Conservation Dist	Piedra, CA	333 GWh	Dec 1983	Jul 2026	Water
Pinyon Pine I	Pinyon Pines Wind I, LLC	Mojave, CA	283 GWh	Oct 2012	Dec 2025	Wind
Pinyon Pine II	Pinyon Pines Wind II, LLC	Mojave, CA	204 GWh	Oct 2012	Dec 2025	Wind
Pio Pico Energy Center	Pio Pico Energy Center LLC	San Diego, CA	47 GWh	Oct 2016	Dec 2025	Natural Gas
Pit 1	Pacific Gas & Electric Co.	Burney, CA	256 GWh	Aug 1922	Dec 2025	Water
Pit 3	Pacific Gas & Electric Co.	Burney, CA	375 GWh	Jun 1925	Dec 2025	Water
Pit 4	Pacific Gas & Electric Co.	Big Bend, CA	342 GWh	Jun 1955	Jul 2026	Water
Pit 5	Pacific Gas & Electric Co.	Big Bend, CA	211 GWh	Mar 1944	Jul 2026	Water
Pit 6	Pacific Gas & Electric Co.	Montgomery Creek, CA	262 GWh	Jul 1965	Dec 2025	Water
Pit 7	Pacific Gas & Electric Co.	Montgomery Creek, CA	366 GWh	Aug 1965	Jul 2026	Water
Pivot Energy PPA 22	Pivot Energy	Visalia, CA	2 GWh	Sep 2024	Dec 2025	Solar
Pixar - Emeryville	Bloom Energy	Emeryville, CA	7 GWh	Dec 2013	Dec 2025	Natural Gas
Plant No 1 Orange County	Orange County Sanitation Dist - (CA)	Fountain Valley, CA	41 GWh	May 1993	Dec 2025	Other Biomass Gas : 81.6% Natural Gas : 18.4%
Plant No 2 Orange County	Orange County Sanitation Dist - (CA)	Huntington Beach, CA	47 GWh	May 1993	Dec 2025	Other Biomass Gas : 77.2% Natural Gas : 22.8%
Poe	Pacific Gas & Electric Co.	Storrie, CA	197 GWh	Sep 1958	Jul 2026	Water
Point Wind	Terra-Gen Operating Co-Wind	Tehachapi, CA	218 GWh	Feb 2021	Jul 2026	Wind
POM Beverage Solar	Wonderful Renewable Energy, LLC.	Del Rey, CA	4 GWh	Jun 2021	Dec 2025	Solar
POM Juice Solar	Wonderful Renewable Energy, LLC.	Fresno, CA	4 GWh	Jun 2021	Dec 2025	Solar
POM Plant 1	Wonderful Renewable Energy, LLC.	Del Rey, CA	5 GWh	Nov 2021	Dec 2025	Solar
POM Plant 2	Wonderful Renewable Energy, LLC.	Del Rey, CA	3 GWh	Nov 2021	Dec 2025	Solar
Ponderosa Bailey Creek	Snow Mountain Hydro LLC	Manton, CA	4 GWh	Feb 1990	Dec 2025	Water
Poole	Southern California Edison Co	Lee Vining, CA	22 GWh	Apr 1924	Dec 2025	Water
Portal	Southern California Edison Co	Lakeshore, CA	26 GWh	Nov 1956	Dec 2025	Water
Portal Ridge Solar B, LLC	Portal Ridge Solar, LLC	Lancaster, CA	53 GWh	Jan 2017	Dec 2025	Solar
Portal Ridge Solar C, LLC	Portal Ridge Solar, LLC	Lancaster, CA	29 GWh	Jan 2017	Dec 2025	Solar
Porterville 6 and 7	Arevon Energy, Inc.	Porterville, CA	4 GWh	Jun 2014	Dec 2025	Solar
Porterville Solar	Altus Power America Management, LLC	Porterville, CA	6 GWh	Dec 2013	Dec 2025	Solar
Potrero Hills Energy Producers	Potrero Hills Energy Producers, LLC	Suisun City, CA	56 GWh	Mar 2016	Dec 2025	Landfill Gas
Power Generation Station (PGS) 2	East Bay Municipal Util Dist - (CA)	Oakland, CA	20 GWh	Nov 2011	Dec 2025	Other Biomass Gas
Powhatan Solar Power Generation Station	AES Distributed Energy	Apple Valley, CA	4 GWh	Nov 2013	Dec 2025	Solar
Preferred Freezer San Leandro	Pacific Gas & Electric Co.	San Leandro, CA	3 GWh	Jun 2017	Dec 2025	Solar
Prologis L.P	Powerflex	Tracy, CA	6 GWh	Jul 2018	Dec 2025	Solar
Proxima	Proxima Solar, LLC	Crows Landing, CA	467 GWh	Mar 2024	Jul 2026	Solar
PSREC/SIAD Solar	Plumas Sierra Rural Electric Coop	Herlong, CA	6 GWh	Aug 2018	Dec 2025	Solar
Puente Hills Energy Recovery	Los Angeles County Sanitation	Whittier, CA	145 GWh	Sep 1986	Jul 2026	Landfill Gas
Pumpjack Solar I	Deriva Energy	McKittrick, CA	51 GWh	Dec 2014	Dec 2025	Solar
PVN Milliken, LLC	PVN Milliken, LLC	Ontario, CA	5 GWh	May 2017	Dec 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#25	Arizona Public Service Company	25.8 TWh	102
#55	Arlington Valley, LLC	3.2 TWh	1
#38	Balancing Authority of Northern California	13.9 TWh	91
#49	Imperial Irrigation District	6.2 TWh	66
#29	Los Angeles Department of Water and Power	19.3 TWh	132
#22	Nevada Power Company	38.6 TWh	143
#51	PUD No. 1 of Douglas County	4.4 TWh	5
#19	Salt River Project Agricultural Improvement and Power District	60.5 TWh	51
#57	Turlock Irrigation District	1.9 TWh	11
#39	Western Area Power Administration - Desert Southwest Region	10.6 TWh	36

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#3	Electric Reliability Council of Texas, Inc.	506.3 TWh	1,487
#5	Southwest Power Pool	314.5 TWh	876
#6	Southern Company Services, Inc. - Trans	259.3 TWh	423
#7	California Independent System Operator	168.7 TWh	2,170
#9	Tennessee Valley Authority	166.2 TWh	209
#10	Florida Power & Light Co.	153.0 TWh	188
#12	New York Independent System Operator	134.1 TWh	1,334
#13	Duke Energy Carolinas	113.4 TWh	578
#15	ISO New England	112.2 TWh	1,667
#16	Bonneville Power Administration	91.1 TWh	170