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
Giffen Solar Park	Giffen Solar Park, LLC	Cantua Creek, CA	20 GWh	May 2017	Dec 2025	Solar
Geysers Unit 5-20	Geysers Power Co LLC	Middletown, CA	4 TWh	Mar 1971	Jul 2026	Geothermal
Sonoma California Geothermal	Geysers Power Co LLC	Middletown, CA	436 GWh	Nov 1983	Dec 2025	Geothermal
Calistoga Power Plant	Geysers Power Co LLC	Middletown, CA	454 GWh	Feb 1984	Jul 2026	Geothermal
Aidlin Geothermal Power Plant	Geysers Power Co LLC	Middletown, CA	82 GWh	Apr 1989	Dec 2025	Geothermal
Genesis Solar Energy Project	Genesis Solar LLC	Blythe, CA	589 GWh	Oct 2013	Jul 2026	Solar
San Joaquin Solar	GASNA 6P, LLC	San Joaquin, CA	22 GWh	Apr 2018	Dec 2025	Solar
Garnet Solar Generation Station I LLC	Garnet Solar Generation Station I LLC	Palm Springs, CA	9 GWh	Nov 2014	Dec 2024	Solar
G2 Energy Ostrom Road LLC	G2 Energy LLC	Wheatland, CA	28 GWh	Jan 2009	Dec 2025	Landfill Gas
G2 Energy Hay Rd	G2 Energy LLC	Vacaville, CA	13 GWh	May 2013	Dec 2025	Landfill Gas
FRV SI Transport Solar LP	FRV SI Transport Solar, L.P. (Sacremento)	Sacramento, CA	1 GWh	Jul 2010	Dec 2025	Solar
Friant Hydro Facility	Friant Power Authority	Friant, CA	73 GWh	Mar 1985	Dec 2025	Water
High Winds LLC	FPLE High Winds, LLC	Birds Landing, CA	214 GWh	Jun 2003	Dec 2025	Wind
San Gorgonio Windplant WPP1993	FPL Energy Operating Services, Inc.	North Palm Springs, CA	192 GWh	Nov 2011	Dec 2025	Wind
FPL Energy Montezuma Winds LLC	FPL Energy Montezuma Wind	Birds Landing, CA	96 GWh	Oct 2010	Dec 2025	Wind
Anheuser-Busch #2	Foundation HA Energy Generation, LLC	Fairfield, CA	3 GWh	Oct 2014	Jul 2026	Wind
Foundation AB	Foundation HA Energy Generation, LLC	Fairfield, CA	3 GWh	Oct 2011	Dec 2025	Wind
Foundation IE	Foundation HA Energy Generation, LLC	Rancho Cucamonga, CA	404 MWh	Nov 2011	Dec 2025	Wind
Golden Acorn Casino	Foundation HA Energy Generation, LLC	Campo, CA	4 GWh	Jun 2014	Jul 2026	Wind
Foundation ST	Foundation HA Energy Generation, LLC	Tracy, CA	2 GWh	May 2011	Dec 2025	Wind
Teichert Materials-Teichert Vernalis	Foundation HA Energy Generation, LLC	San Joaquin, CA	2 GWh	Sep 2010	Dec 2025	Wind
City of Soledad Water Reclamation	Foundation HA Energy Generation, LLC	Soledad, CA	4 GWh	Oct 2014	Dec 2025	Wind
Taylor Farms	Foundation HA Energy Generation, LLC	Gonzales, CA	4 GWh	Oct 2014	Dec 2025	Wind
Foundation Dole Fresh Vegetables	Foundation CA Fund X Manager LLC	Soledad, CA	18 GWh	Jul 2022	Dec 2025	Wind
Foundation CDCR LAC	Foundation CA Fund VIII Manager, LLC	Lancaster, CA	4 GWh	Nov 2017	Dec 2025	Wind
Foundation Scheid Vineyards	Foundation CA Fund VIII Manager, LLC	Greenfield, CA	4 GWh	Aug 2017	Dec 2025	Wind
Foundation Cemex River Plant	Foundation CA Fund VI Manager LLC	Victorville, CA	4 GWh	Nov 2012	Dec 2025	Wind
Foundation Wal-Mart Red Bluff	Foundation CA Fund VI Manager LLC	Red Bluff, CA	1 GWh	Aug 2012	Jul 2026	Wind
Foundation Cemex BMQ	Foundation CA Fund VI Manager LLC	Apple Valley, CA	4 GWh	Nov 2012	Dec 2025	Wind
Foundation Superior Farms	Foundation CA Fund VI Manager LLC	Dixon, CA	766 MWh	Nov 2012	Jul 2026	Wind
Foundation NWNA	Foundation CA Fund V Manager, LLC	Cabazon, CA	23 GWh	Nov 2012	Dec 2025	Wind
Foundation RRM	Foundation CA Fund V Manager, LLC	Cabazon, CA	10 GWh	Nov 2012	Dec 2025	Wind
Foundation Cemex Madison	Foundation CA Fund V Manager, LLC	Madison, CA	2 GWh	Jul 2012	Dec 2025	Wind
Foundation California Training Facility	Foundation CA Fund IX Manager, LLC	Soledad, CA	6 GWh	Jul 2018	Dec 2025	Wind
Foundation Mann Packing	Foundation CA Fund IX Manager, LLC	Gonzales, CA	6 GWh	Mar 2019	Dec 2025	Wind
Foundation SaIinas Valley State Prison	Foundation CA Fund IX Manager, LLC	Soledad, CA	5 GWh	Jul 2018	Dec 2025	Wind
Foster Clean Power B	Foster Clean Power B LLC	Arcata, CA	901 MWh	Aug 2025	Dec 2025	Solar
Foster Clean Power A	Foster Clean Power A, LLC	Arcata, CA	846 MWh	Sep 2025	Dec 2025	Solar
Fresno Hoover High School Hybrid	Forefront Power, LLC	Fresno, CA	2 GWh	Feb 2020	Dec 2025	Solar
Fresno Sunnyside High School Hybrid	Forefront Power, LLC	Fresno, CA	2 GWh	Nov 2020	Dec 2025	Solar
CA - Amazon - SMF6	Forefront Power, LLC	Sacramento, CA	361 MWh	Sep 2025	Dec 2025	Solar
CA-DGS-California Men's Colony	Forefront Power, LLC	San Luis Obispo, CA	5 GWh	Apr 2023	Dec 2025	Solar
Fresno Bullard High School Hybrid	Forefront Power, LLC	Fresno, CA	2 GWh	Feb 2020	Dec 2025	Solar
CA - Madera USD - Madera South HS	Forefront Power, LLC	Madera, CA	2 GWh	Aug 2023	Dec 2025	Solar
CA - Fresno County - Juvenile Hall	Forefront Power, LLC	Fresno, CA	7 GWh	Feb 2022	Dec 2025	Solar
CA-Ventura County CCD-Ventura College	Forefront Power, LLC	Ventura, CA	145 MWh	Nov 2025	Dec 2025	Solar
CA - Ventura Co CCD - Moorpark College	Forefront Power, LLC	Moorpark, CA	5 GWh	Jul 2023	Dec 2025	Solar
CA-DGS RFP-Pleasant Valley State Prison	Forefront Power, LLC	Coalinga, CA	4 GWh	Dec 2023	Dec 2025	Solar
CA-DGS RFP-Salinas Valley State Prison	Forefront Power, LLC	Soledad, CA	8 GWh	Oct 2023	Dec 2025	Solar
CA-Ventura Co CCD-Oxnard College Canopy	Forefront Power, LLC	Ventura, CA	3 GWh	Nov 2022	Dec 2025	Solar
CA-DGS- RFP-Correctional Training Fac	Forefront Power, LLC	Soledad, CA	4 GWh	Feb 2024	Dec 2025	Solar
DGS Wasco State Prison	Forefront Power, LLC	Wasco, CA	5 GWh	Jun 2020	Dec 2025	Solar
Reedley Community College Solar	Forefront Power, LLC	Reedley, CA	4 GWh	Nov 2018	Nov 2025	Solar
SCCCD - Fresno Community College	Forefront Power, LLC	Fresno, CA	4 GWh	Sep 2018	Nov 2025	Solar
SCCCD - Clovis Community College	Forefront Power, LLC	Fresno, CA	2 GWh	Nov 2018	Nov 2025	Solar
Grossmont-Cuyamaca-Cuyamaca Col. Solar &	Forefront Power, LLC	El Cajon, CA	3 GWh	Feb 2024	Dec 2025	Solar
Fresno-Clovis RWRF	Forefront Power, LLC	Fresno, CA	28 GWh	Mar 2025	Dec 2025	Solar
DGS Central California Womens Facility	Forefront Power, LLC	Chowchilla, CA	3 GWh	Nov 2020	Dec 2025	Solar
CA - Fresno, City of - SE Surface WTP	Forefront Power, LLC	Fresno, CA	7 GWh	Dec 2024	Dec 2025	Solar
DGS Valley State Prison	Forefront Power, LLC	Chowchilla, CA	4 GWh	Jan 2021	Dec 2025	Solar
Amazon - Stockton - Roof (SCK1) - (CA)	Forefront Power, LLC	Stockton, CA	4 GWh	Feb 2023	Dec 2025	Solar
CA - DGS RFP - RJ Donovan State Prison	Forefront Power, LLC	San Diego, CA	2 GWh	Dec 2023	Dec 2025	Solar
Cabrillo College	Forefront Power, LLC	Aptos, CA	4 GWh	Nov 2023	Dec 2025	Solar
Grossmont College	Forefront Power, LLC	El Cajon, CA	5 GWh	Feb 2023	Dec 2025	Solar
CA-DGS-California Correctional Inst	Forefront Power, LLC	Tehachapi, CA	4 GWh	Mar 2024	Dec 2025	Solar
FTF-PackingShed	Family Tree Farms	Reedley, CA	748 MWh	May 2013	Dec 2025	Solar
Bishop Ranch - BR 8-Q	Executive Parkway BR8-Q Solar Project 2020 LLC	San Ramon, CA	871 MWh	Mar 2025	Dec 2025	Solar
Bishop Ranch - BR 8-O	Executive Parkway BR8-O Solar Project 2020 LLC	San Ramon, CA	1 GWh	Feb 2025	Dec 2025	Solar
Lincoln Landfill	Energy 2001 Inc	Lincoln, CA	29 GWh	Oct 2004	Dec 2025	Landfill Gas
Encina Water Pollution Control	Encina Joint Powers Authority	Carlsbad, CA	14 GWh	Oct 2008	Jul 2026	Other Biomass Gas : 94.0% Natural Gas : 6.0%
Enchanted Rock Lodi	Enchanted Rock	Lodi, CA	5 GWh	Oct 2024	Dec 2025	Natural Gas
Ellwood	Ellwood Power, LLC	Goleta, CA	305 MWh	Jul 1974	Dec 2025	Natural Gas
Ellis Creek Solar	Ellis Creek Solar, LLC	Petaluma, CA	1 GWh	Sep 2025	Dec 2025	Solar
Elk Hills Power LLC	Elk Hills Power LLC	Tupman, CA	3 TWh	Jun 2003	Jul 2026	Natural Gas
El Dorado	El Dorado Irrigation District	Pollock Pines, CA	81 GWh	Dec 1923	Dec 2025	Water
Haypress	EIF Haypress LLC	Sierra City, CA	17 GWh	Nov 1988	Jun 2025	Water
E F Oxnard Energy Facility	EF Oxnard, LLC	Oxnard, CA	8 GWh	May 1990	Jul 2026	Natural Gas
CA- US Foods- Livermore	EDPRNA DG CA Livermore LLC	Livermore, CA	2 GWh	Jul 2024	Dec 2025	Solar
Scarlet II Hybrid	EDPR Scarlet II LLC	Cantua Creek, CA	369 GWh	Nov 2024	Jul 2026	Solar
Sandrini Solar 200	EDPR CA Solar Park LLC	Mettler, CA	484 GWh	Nov 2024	Jul 2026	Solar
Sandrini Solar 100	EDPR CA Solar Park II LLC	Mettler, CA	248 GWh	Nov 2024	Jul 2026	Solar
Sun Streams, LLC	EDP Renewables North America LLC	Arlington, AZ	336 GWh	Dec 2019	Jul 2026	Solar
Scarlet Solar (CA)	EDP Renewables North America LLC	Fresno, CA	480 GWh	May 2024	Jul 2026	Solar
Sunshine Valley Solar	EDP Renewables North America LLC	Armagosa, NV	246 GWh	Nov 2019	Jul 2026	Solar
Windhub Solar A LLC	EDP Renewables North America LLC	Mojave, CA	48 GWh	Nov 2019	Dec 2025	Solar
Edom Hills Project 1 LLC	Edom Hills Project 1 LLC	Cathedral City, CA	5 GWh	Aug 2008	Jun 2025	Wind
Catalina Solar LLC	EDF Renewable Asset Holdings, Inc.	Rosamond, CA	265 GWh	Nov 2012	Nov 2025	Solar
Pacific Wind LLC	EDF Renewable Asset Holdings, Inc.	Rosamond, CA	295 GWh	Jul 2012	Dec 2025	Wind
Shiloh Wind Project 2 LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	369 GWh	Dec 2008	Dec 2025	Wind
Shiloh IV Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	293 GWh	Nov 2012	Dec 2025	Wind
EDF Renewable Windfarm V Inc	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	23 GWh	Dec 1989	Dec 2025	Wind
Shiloh III Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	282 GWh	Nov 2011	Dec 2025	Wind
Valentine Solar, LLC	EDF Renewable Asset Holdings, Inc.	Rosamond, CA	267 GWh	Oct 2019	Jul 2026	Solar
Munro Valley Solar	Ecos Energy LLC	Olancha, CA	9 GWh	Sep 2016	Dec 2025	Solar
Kettleman Solar Project	Ecos Energy LLC	Lodi, CA	3 GWh	Mar 2014	Dec 2025	Solar
Bear Creek Solar (Lodi)	Ecos Energy LLC	Lodi, CA	4 GWh	Jan 2014	Nov 2025	Solar
Diamond Valley Solar Project	Ecos Energy LLC	Winchester, CA	2 GWh	Dec 2014	Dec 2025	Solar
Vintner Solar	Ecos Energy LLC	Templeton, CA	4 GWh	Mar 2014	Dec 2025	Solar
Hollister Solar LLC	Ecos Energy LLC	Hollister, CA	4 GWh	Nov 2014	Dec 2025	Solar
Mission Solar LLC	Ecos Energy LLC	Merced, CA	4 GWh	Nov 2014	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