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%

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

Download Generation

Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Kerckhoff 2	Pacific Gas & Electric Co.	Auberry, CA	450 GWh	Apr 1983	Jul 2026	Water
Cresta	Pacific Gas & Electric Co.	Storrie, CA	342 GWh	Oct 1949	Dec 2025	Water
Electra	Pacific Gas & Electric Co.	Jackson, CA	257 GWh	May 1948	Jul 2026	Water
Haas	Pacific Gas & Electric Co.	Balch Camp, CA	174 GWh	Nov 1958	Jul 2026	Water
Halsey	Pacific Gas & Electric Co.	Auburn, CA	22 GWh	Nov 1916	Dec 2025	Water
Hat Creek 1	Pacific Gas & Electric Co.	Burney, CA	32 GWh	Jul 1921	Dec 2025	Water
Humboldt Bay	Pacific Gas & Electric Co.	Eureka, CA	312 GWh	Aug 2010	Jul 2026	Natural Gas : 99.4% Distillate Fuel Oil : 0.6%
James B Black	Pacific Gas & Electric Co.	Big Bend, CA	504 GWh	Nov 1965	Jul 2026	Water
Kings River PH	Pacific Gas & Electric Co.	Balch Camp, CA	81 GWh	Feb 1962	Dec 2025	Water
Toadtown	Pacific Gas & Electric Co.	Magalia, CA	2 GWh	Mar 1986	Oct 2025	Water
Vaca Dixon Solar Station	Pacific Gas & Electric Co.	Vacaville, CA	3 GWh	Nov 2009	Dec 2025	Solar
P66 Rodeo Solar	P66 Rodeo Solar	Rodeo, CA	57 GWh	Mar 2023	Jul 2026	Solar
Otay Mesa Generating Project	Otay Mesa Energy Center LLC	San Diego, CA	1 TWh	Sep 2009	Jul 2026	Natural Gas
Ormond Beach	Ormond Beach Power, LLC	Oxnard, CA	18 GWh	Jul 1971	Jul 2026	Natural Gas
Mammoth G3	Ormat Nevada Inc	Mammoth Lakes, CA	75 GWh	Nov 1990	Dec 2025	Geothermal
Dixie Valley	Ormat Nevada Inc	Fallon, NV	469 GWh	May 1988	Jul 2026	Geothermal
Mammoth G2	Ormat Nevada Inc	Mammoth Lakes, CA	84 GWh	Nov 1990	Dec 2025	Geothermal
Mammoth G1	Ormat Nevada Inc	Mammoth lakes, CA	44 GWh	Nov 1984	Dec 2025	Geothermal
Orion Solar II	Orion Solar II, LLC	Arvin, CA	16 GWh	May 2014	Dec 2025	Solar
Orion Solar I	Orion Solar I LLC	Arvin, CA	27 GWh	Mar 2014	Dec 2025	Solar
OES Biogas Power	Organic Energy Solutions, Inc.	San Bernardino, CA	904 MWh	-	Dec 2025	Other Biomass Gas
Orange Grove Peaking Facility	Orange Grove Energy LP	Pala, CA	9 GWh	May 2010	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%
Oaks HOA	Onyx Asset Services Group	Ione, CA	2 GWh	Mar 2025	Dec 2025	Solar
Paso Robles - Municipal Airport	Onyx Asset Services Group	Paso Robles, CA	8 GWh	Dec 2023	Dec 2025	Solar
SeaWorld Aquatica	Onyx Asset Services Group	Chula Vista, CA	2 GWh	Apr 2018	Dec 2025	Solar
Legoland CA Phase I	Onyx Asset Services Group	Carlsbad, CA	1 GWh	May 2025	Dec 2025	Solar
Amazon - SAN5	Onyx Asset Services Group	San Diego, CA	530 MWh	Oct 2025	Dec 2025	Solar
Cottonwood Solar, LLC (City of Corcoran)	Onward Energy	Corcoran, CA	21 GWh	Apr 2015	Dec 2025	Solar
Alamo Solar	Onward Energy	Oro Grande, CA	49 GWh	Apr 2015	Dec 2025	Solar
Catalina Solar 2, LLC	Onward Energy	Rosamond, CA	55 GWh	Jul 2015	Dec 2025	Solar
Cottonwood Solar, LLC Cottonwood Carport	Onward Energy	Novato, CA	1 GWh	Apr 2016	Dec 2025	Solar
TA-Acacia, LLC	Onward Energy	Lancaster, CA	48 GWh	Oct 2014	Dec 2025	Solar
CID Solar, LLC	Onward Energy	Corcoran, CA	41 GWh	Nov 2014	Dec 2025	Solar
Maricopa West Solar PV, LLC	Onward Energy	Taft, CA	50 GWh	Nov 2015	Dec 2025	Solar
RE Camelot LLC	Onward Energy	Mojave, CA	121 GWh	Nov 2014	Dec 2025	Solar
RE Adams East, LLC	Onward Energy	Fresno, CA	41 GWh	Nov 2014	Dec 2025	Solar
RE Kansas Solar, LLC	Onward Energy	Lemoore, CA	24 GWh	Nov 2014	Dec 2025	Solar
RE Kent South, LLC	Onward Energy	Lemoore, CA	36 GWh	Nov 2014	Dec 2025	Solar
Cottonwood Solar, LLC (Goose Lake)	Onward Energy	Lost Hills, CA	30 GWh	Apr 2015	Dec 2025	Solar
RE Columbia Two, LLC	Onward Energy	Mojave, CA	41 GWh	Nov 2014	Dec 2025	Solar
RE Old River One, LLC	Onward Energy	Bakersfield, CA	38 GWh	Nov 2014	Dec 2025	Solar
One Ten Partners PV	One Ten Partners, LLC	Palmdale, CA	6 GWh	Aug 2017	Dec 2025	Solar
Olsen	Olsen Power Partners	Whitmore, CA	15 GWh	Dec 1989	Dec 2025	Water
Agnews Power Plant	OLS Energy-Agnews Inc.	San Jose, CA	9 GWh	Oct 1990	Dec 2025	Natural Gas
Rio Bravo Hydro Project	Olcese Water District	Bakersfield, CA	27 GWh	Apr 1989	Nov 2025	Water
OK Produce Fresno Carport	OK Produce	Fresno, CA	3 GWh	Dec 2018	Dec 2025	Solar
Oakley Solar Project	Oakley Solar Project LLC	Oakley, CA	2 GWh	May 2013	Dec 2025	Solar
Beardsley	Oakdale&South San Joaquin Irrigation D.	None, CA	56 GWh	Apr 1957	Dec 2025	Water
Donnells	Oakdale&South San Joaquin Irrigation D.	None, CA	233 GWh	May 1957	Dec 2025	Water
Tulloch	Oakdale&South San Joaquin Irrigation D.	Jamestown, CA	103 GWh	May 1958	Dec 2025	Water
Solar Borrego I	NRG Solar Borrego I	Borrego Springs, CA	61 GWh	Jan 2013	Dec 2025	Solar
Solar Blythe 2	NRG Solar Blythe II LLC	Blythe, CA	41 GWh	Mar 2017	Dec 2025	Solar
Solar Blythe LLC	NRG Solar Blythe	Blythe, CA	39 GWh	Nov 2009	Dec 2025	Solar
El Segundo Energy Center LLC	NRG Energy Services LLC	El Segundo, CA	63 GWh	Jun 2013	Jul 2026	Natural Gas
Ivanpah 2	NRG Energy Services	Nipton, CA	234 GWh	Nov 2013	Jul 2026	Solar : 98.0% Natural Gas : 2.0%
Ivanpah 3	NRG Energy Services	Nipton, CA	185 GWh	Nov 2013	Jul 2026	Solar : 97.7% Natural Gas : 2.3%
Ivanpah 1	NRG Energy Services	Nipton, CA	192 GWh	Nov 2013	Jul 2026	Solar : 96.3% Natural Gas : 3.7%
Carlsbad Energy Center	NRG California Peaker Operations LLC	Carlsbad, CA	201 GWh	Nov 2018	Jul 2026	Natural Gas
Geothermal 2	Northern California Power Agny	Middletown, CA	324 GWh	Nov 1985	Jul 2026	Geothermal
Collierville Powerhouse	Northern California Power Agny	Murphys, CA	407 GWh	Oct 1989	Jul 2026	Water
Spicer Meadow Project	Northern California Power Agny	Murphys, CA	14 GWh	Oct 1989	Dec 2025	Water
Geothermal 1	Northern California Power Agny	Middletown, CA	307 GWh	Dec 1982	Jul 2026	Geothermal
Lodi Energy Center	Northern California Power Agny	Lodi, CA	456 GWh	Oct 2012	Jul 2026	Natural Gas
Lodi	Northern California Power Agny	Lodi, CA	2 GWh	Jan 1986	Dec 2025	Natural Gas
Alameda	Northern California Power Agny	Alameda, CA	3 GWh	Apr 1986	Dec 2025	Natural Gas
North Sky River Energy LLC	North Sky River Energy LLC	Weldon, CA	365 GWh	Nov 2012	Dec 2025	Wind
North Rosamond Solar LLC	North Rosamond Solar, LLC	Rosamond, CA	361 GWh	May 2019	Jul 2026	Solar
Coram Energy LLC (ECT)	Nextera Energy Resources	Tehachapi, CA	22 GWh	Apr 2005	Dec 2025	Wind
Coram Energy LLC	Nextera Energy Resources	Tehachapi, CA	9 GWh	Dec 2004	Dec 2025	Wind
Coram Energy LLC (4.5MW)	Nextera Energy Resources	Tehachapi, CA	9 GWh	Nov 1985	Dec 2025	Wind
Alta Wind VIII	Nextera Energy Resources	Mojave, CA	219 GWh	Dec 2011	Dec 2025	Wind
Windstar 1	Nextera Energy Resources	Tehachapi, CA	255 GWh	Jan 2012	Dec 2025	Wind
Montezuma Wind II	NextEra Energy Montezuma Wind II, LLC	Birds Landing, CA	196 GWh	Dec 2011	Dec 2025	Wind
Desert Sunlight 300, LLC	NextEra Energy Desert Sunlight 300, LLC	Desert Center, CA	620 GWh	Oct 2013	Dec 2025	Solar
Desert Sunlight 250, LLC	NextEra Energy Desert Sunlight 250, LLC	Desert Center, CA	517 GWh	Oct 2013	Dec 2025	Solar
Oxnard Paper Mill	New-Indy, Oxnard LLC	Oxnard, CA	183 GWh	Feb 1986	Jul 2026	Natural Gas
New-Indy Ontario Mill	New-Indy Ontario LLC	Ontario, CA	244 GWh	May 1985	Jul 2026	Natural Gas
Rollins	Nevada Irrigation District	Colfax, CA	37 GWh	Jul 1980	Dec 2025	Water
Chicago Park	Nevada Irrigation District	Colfax, CA	65 GWh	Oct 1965	Dec 2025	Water
Dutch Flat 2	Nevada Irrigation District	Dutch Flat, CA	15 GWh	Oct 1965	Dec 2025	Water
Bowman	Nevada Irrigation District	Nevada City, CA	14 GWh	Aug 1986	Dec 2025	Water
Combie South	Nevada Irrigation District	Auburn, CA	4 GWh	Mar 1984	Dec 2025	Water
Scott Flat	Nevada Irrigation District	Nevada City, CA	4 GWh	Jan 1985	Oct 2025	Water
Deer Creek PH	Nevada Irrigation District	Nevada City, CA	15 GWh	Apr 1908	Dec 2025	Water
Nelson Creek	Nelson Creek Power Inc	Big Bend, CA	3 GWh	Sep 1989	Dec 2025	Water
Kilroy Solar	Nautilus Solar Solutions	San Diego, CA	6 GWh	Dec 2017	Dec 2025	Solar
National Raisin	National Raisin	Fowler, CA	5 GWh	May 2015	Dec 2025	Solar
Mustang Hills LLC	Mustang Hills, LLC (Longroad)	Mojave, CA	267 GWh	Apr 2012	Dec 2025	Wind
Henrietta Peaker	MRP San Joaquin Energy LLC.	Lemoore, CA	4 GWh	May 2002	Jul 2026	Natural Gas
Hanford Energy Park Peaker	MRP San Joaquin Energy LLC.	Hanford, CA	2 GWh	Aug 2001	Jul 2026	Natural Gas
Tracy Combined Cycle Power Plant	MRP San Joaquin Energy LLC.	Tracy, CA	669 GWh	Mar 2003	Jul 2026	Natural Gas
High Desert Power Plant	MRP Generation Holdings, LLC	Victorville, CA	3 TWh	Mar 2003	Jul 2026	Natural Gas
Marina Landfill Gas	Monterey Regional Waste Mgmt	Marina, CA	10 GWh	Mar 1998	Dec 2025	Landfill Gas
Monterey One Water	Monterey One Water	Marina, CA	8 GWh	Jul 1988	Dec 2025	Other Biomass Gas : 78.5% Natural Gas : 21.5%
Nacimiento Hydro Project	Monterey Cnty Water Res Agency	Bradley, CA	12 GWh	Jun 1987	Dec 2025	Water
Mojave Solar Project	Mojave Solar LLC	Hinkley, CA	588 GWh	Nov 2014	Jul 2026	Solar
New Hogan Power Plant	Modesto Irrigation District	Valley Springs, CA	6 GWh	Mar 1989	Dec 2025	Water
RE Mustang LLC	MN8 Energy LLC	Lemoore, CA	221 GWh	Jul 2016	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