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 2025
Annual Generation	188.0 TWh
Power Plants	2,075
Utilities	965
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 \| 43.1% Solar \| 26.4% Water \| 11.1% Wind \| 10.6% Nuclear \| 9.4%

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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
ABEC #4 dba CE&S Dairy	ABEC #4 LLC	Bakersfield, CA	8 GWh	Jan 2018	Dec 2024	Other Biomass Gas
Kern Sunset 1886-WD	Standard Solar	Bakersfield, CA	270 MWh	Oct 2024	Dec 2024	Solar
Calibrant Bakersfield LLC	Bay4 Energy Services, LLC	Bakersfield, CA	4 GWh	Jan 2022	Dec 2024	Solar
Vulcan San Emidio Solar	Renew Solar VMC LLC	Bakersfield, CA	4 GWh	Feb 2023	Dec 2024	Solar
Kern Del Oro	REC KDO, LLC	Bakersfield, CA	4 MWh	Nov 2024	Dec 2024	Solar
Liberty HS Solar Project	MN8 Energy LLC	Bakersfield, CA	2 GWh	Nov 2018	Dec 2024	Solar
Laredo Detention Facility - Solar 2, 3	County of Kern	Bakersfield, CA	5 GWh	Oct 2021	Dec 2024	Solar
Frontier HS Solar Project	MN8 Energy LLC	Bakersfield, CA	2 GWh	Nov 2018	Dec 2024	Solar
Amazon Bakersfield 1 Solar Project	Solar Star Prime 3, LLC	Bakersfiled, CA	8 GWh	Dec 2023	Dec 2024	Solar
Balch 2	Pacific Gas & Electric Co.	Balch Camp, CA	443 GWh	Oct 1958	Dec 2024	Water
Haas	Pacific Gas & Electric Co.	Balch Camp, CA	220 GWh	Nov 1958	Aug 2025	Water
Balch 1	Pacific Gas & Electric Co.	Balch Camp, CA	139 GWh	Jan 1927	Dec 2024	Water
Kings River PH	Pacific Gas & Electric Co.	Balch Camp, CA	107 GWh	Feb 1962	Dec 2024	Water
Longboat Solar, LLC	Duke Energy Renewables Services	Barstow, CA	42 GWh	Nov 2016	Dec 2024	Solar
Ameresco Keller Canyon	AMERESCO Keller Canyon LLC	Bay Point, CA	19 GWh	Jun 2009	Dec 2024	Landfill Gas
Amazon PSP1	Greenbacker Renewable Energy Corporation	Beaumont, CA	7 GWh	Sep 2021	Dec 2024	Solar
Caribou 2	Pacific Gas & Electric Co.	Belden, CA	364 GWh	Oct 1958	Sep 2025	Water
Caribou 1	Pacific Gas & Electric Co.	Belden, CA	221 GWh	May 1921	Dec 2024	Water
Butt Valley	Pacific Gas & Electric Co.	Belden, CA	149 GWh	Nov 1958	Dec 2024	Water
Belden	Pacific Gas & Electric Co.	Belden, CA	188 GWh	Aug 1969	Sep 2025	Water
Valero Refinery Cogeneration Unit 1	Valero Refining Co California	Benicia, CA	275 GWh	Sep 2002	Sep 2025	Natural Gas : 87.7% Other Gas : 12.3%
Lake Herman	Greenbacker Renewable Energy Corporation	Benicia, CA	13 GWh	Oct 2021	Dec 2024	Solar
PE Berkeley	Berkeley Cogeneration Facility	Berkeley, CA	166 GWh	May 1987	Sep 2025	Natural Gas
Bear Valley Power Plant	Bear Valley Electric Service	Big Bear Lake, CA	307 MWh	Dec 2004	Dec 2024	Natural Gas
BBARWA	Distributed Solar Development, LLC	Big Bear, CA	3 GWh	Nov 2021	Dec 2024	Solar
Pit 4	Pacific Gas & Electric Co.	Big Bend, CA	399 GWh	Jun 1955	Sep 2025	Water
James B Black	Pacific Gas & Electric Co.	Big Bend, CA	597 GWh	Nov 1965	Sep 2025	Water
Pit 5	Pacific Gas & Electric Co.	Big Bend, CA	620 GWh	Mar 1944	Sep 2025	Water
Nelson Creek	Nelson Creek Power Inc	Big Bend, CA	3 GWh	Sep 1989	Dec 2024	Water
Big Creek 1	Southern California Edison Co	Big Creek, CA	405 GWh	Oct 1913	Dec 2024	Water
High Winds LLC	FPLE High Winds, LLC	Birds Landing, CA	233 GWh	Jun 2003	Dec 2024	Wind
EDF Renewable Windfarm V Inc	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	20 GWh	Dec 1989	Dec 2024	Wind
Shiloh IV Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	278 GWh	Nov 2012	Dec 2024	Wind
Montezuma Wind II	NextEra Energy Montezuma Wind II, LLC	Birds Landing, CA	196 GWh	Dec 2011	Dec 2024	Wind
FPL Energy Montezuma Winds LLC	FPL Energy Montezuma Wind	Birds Landing, CA	85 GWh	Oct 2010	Dec 2024	Wind
Shiloh III Wind Project LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	265 GWh	Nov 2011	Dec 2024	Wind
Shiloh Wind Project 2 LLC	EDF Renewable Asset Holdings, Inc.	Birds Landing, CA	393 GWh	Dec 2008	Dec 2024	Wind
Bishop Creek 5	Southern California Edison Co	Bishop, CA	17 GWh	May 1919	Sep 2024	Water
Bishop Creek 6	Southern California Edison Co	Bishop, CA	10 GWh	Feb 1913	Dec 2024	Water
Bishop Creek 3	Southern California Edison Co	Bishop, CA	20 GWh	May 1913	Dec 2024	Water
Bishop Creek 2	Southern California Edison Co	Bishop, CA	16 GWh	Oct 1908	Dec 2024	Water
Bishop Creek 4	Southern California Edison Co	Bishop, CA	40 GWh	Aug 1905	Dec 2024	Water
Wonderful Orchards - West Valley	Wonderful Renewable Energy, LLC.	Blackwells Corner, CA	1 GWh	Sep 2020	Dec 2024	Solar
Arlington Energy Center III	Arlington Energy Center III	Blythe, CA	321 GWh	Jul 2022	Sep 2025	Solar
Solar Blythe 2	NRG Solar Blythe II LLC	Blythe, CA	38 GWh	Mar 2017	Dec 2024	Solar
Blythe Mesa Solar II	Blythe Mesa Solar II, LLC	Blythe, CA	584 GWh	Nov 2022	Sep 2025	Solar
Blythe Solar II, LLC	Blythe Solar II, LLC	Blythe, CA	337 GWh	Jun 2016	Sep 2025	Solar
Desert Quartzite	Desert Quartzite LLC	Blythe, CA	755 GWh	Nov 2024	Sep 2025	Solar
Arlington Energy Center II	Arlington Energy Center II	Blythe, CA	633 GWh	Feb 2022	Sep 2025	Solar
Blythe Solar 110, LLC	Blythe Solar 110, LLC	Blythe, CA	581 GWh	Feb 2016	Dec 2024	Solar
Blythe Solar IV, LLC	Blythe Solar IV, LLC	Blythe, CA	339 GWh	Oct 2020	Sep 2025	Solar
Blythe Solar III, LLC Hybrid	Blythe Solar III, LLC	Blythe, CA	354 GWh	Apr 2020	Sep 2025	Solar
Genesis Solar Energy Project	Genesis Solar LLC	Blythe, CA	623 GWh	Oct 2013	Sep 2025	Solar
Venable Solar 1	Venable Solar, LLC	Blythe, CA	3 GWh	Mar 2015	Dec 2024	Solar
Palo Verde College	Scale Sustainable I, LLC	Blythe, CA	2 GWh	Jul 2009	Dec 2024	Solar
Solar Blythe LLC	NRG Solar Blythe	Blythe, CA	42 GWh	Nov 2009	Dec 2024	Solar
SunEdison Ironwood State Prison	SunE CPA CDC2 LLC	Blythe, CA	996 MWh	Apr 2008	Dec 2024	Solar
Chuckawalla Valley State Prison	SunE CPA CDC1 LLC	Blythe, CA	1 GWh	May 2006	Dec 2024	Solar
Blythe Energy Inc	AltaGas Blythe Operations Inc	Blythe, CA	372 GWh	Nov 2003	Sep 2025	Natural Gas
McCoy Solar Energy Project Hybrid	McCoy Solar, LLC	Blythe, CA	647 GWh	Jul 2015	Dec 2024	Solar
Venable Solar 2	Venable Solar, LLC	Blythe, CA	3 GWh	Mar 2015	Dec 2024	Solar
Chuckawalla Solar	Altus Power America Management, LLC	Blythe, CA	7 GWh	May 2012	Dec 2024	Solar
Ironwood Solar LLC	Altus Power America Management, LLC	Blythe, CA	7 GWh	Mar 2012	Dec 2024	Solar
US Borax	U S Borax Inc	Boron, CA	279 GWh	Jun 1984	Sep 2025	Natural Gas
Resurgence Solar	Resurgence Solar	Boron, CA	253 GWh	Jul 2023	Sep 2025	Solar
Resurgence Solar II	Resurgence Solar II	Boron, CA	135 GWh	Jul 2023	Sep 2025	Solar
Ocotillo Wells	Conductive Power	Borrego Springs, CA	109 GWh	Aug 2023	Sep 2025	Solar
Titan Solar 1 (CA)	Titan Solar 1, LLC	Borrego Springs, CA	132 GWh	Nov 2020	Sep 2025	Solar
Solar Borrego I	NRG Solar Borrego I	Borrego Springs, CA	62 GWh	Jan 2013	Dec 2024	Solar
CM10	Consolidated Edison Development Inc.	Boulder City, NV	18 GWh	Nov 2008	Dec 2024	Solar
Copper Mountain Solar 2	Consolidated Edison Development Inc.	Boulder City, NV	356 GWh	Jun 2012	Dec 2024	Solar
Desert Star Energy Center	Desert Star Energy Center SDG&E	Boulder City, NV	546 GWh	Apr 2000	Sep 2025	Natural Gas
CM48	Consolidated Edison Development Inc.	Boulder City, NV	94 GWh	May 2010	Dec 2024	Solar
Copper Mountain Solar 4, LLC	Consolidated Edison Development Inc.	Boulder City, NV	211 GWh	Aug 2016	Dec 2024	Solar
Tule Wind LLC	Avangrid Power LLC	Boulevard, CA	352 GWh	Nov 2017	Sep 2025	Wind
Desert Green Solar Farm LLC	Invenergy Services LLC	Boulevard, CA	10 GWh	Oct 2014	Dec 2024	Solar
Nacimiento Hydro Project	Monterey Cnty Water Res Agency	Bradley, CA	18 GWh	Jun 1987	Dec 2024	Water
Blacksand Generating Facility	Bridge Energy LLC	Brea, CA	39 GWh	May 2000	Dec 2024	Natural Gas
Brea Expansion Plant	Brea Power II	Brea, CA	236 GWh	Oct 2012	Sep 2025	Landfill Gas
CSD 2 - Heritage High	CleanCapital Holdings	Brentwood, CA	2 GWh	Aug 2013	Dec 2024	Solar
Baker Creek Hydroelectric	Baker Station Associates, LP	Bridgeville, CA	4 GWh	Oct 2014	Dec 2024	Water
Narrows 2	Yuba County Water Agency	Browns Valley, CA	157 GWh	Nov 1969	Dec 2024	Water
Alticor Inc - Solar Project	MN8 Energy LLC	Buena Park, CA	2 GWh	Nov 2017	Dec 2024	Solar
Hat Creek 1	Pacific Gas & Electric Co.	Burney, CA	27 GWh	Jul 1921	Dec 2024	Water
Pit 3	Pacific Gas & Electric Co.	Burney, CA	333 GWh	Jun 1925	Dec 2024	Water
Pit 1	Pacific Gas & Electric Co.	Burney, CA	188 GWh	Aug 1922	Dec 2024	Water
Burney Forest Products	Burney Forest Products, A Joint Venture	Burney, CA	193 GWh	Sep 1989	Dec 2024	Wood/Wood Waste Solids : 94.4% Natural Gas : 5.6%
Hat Creek 2	Pacific Gas & Electric Co.	Burney, CA	26 GWh	Aug 1921	Dec 2024	Water
Cove Hydroelectric	Snow Mountain Hydro LLC	Burney, CA	18 GWh	Jan 1990	Dec 2024	Water
Hatchet Ridge Wind Project	Pattern Operators LP	Burney, CA	268 GWh	Nov 2010	Dec 2024	Wind
Lost Creek I	Snow Mountain Hydro LLC	Burney, CA	5 GWh	Nov 1989	Dec 2024	Water
Sierra Pacific Burney Facility	Sierra Pacific Industries	Burney, CA	96 GWh	Sep 1986	Dec 2024	Wood/Wood Waste Solids
Burney Creek	Snow Mountain Hydro LLC	Burney, CA	9 GWh	Feb 1990	Dec 2024	Water
ABEC #2 dba West-Star Dairy	ABEC #2 LLC	Buttonwillow, CA	8 GWh	Jan 2018	Dec 2024	Other Biomass Gas
Byron Highway Solar	RPCA Solar 3, LLC	Byron, CA	14 GWh	Oct 2022	Dec 2024	Solar
Buena Vista Energy LLC	Leeward Asset Management, LLC	Byron, CA	90 GWh	Nov 2006	Dec 2024	Wind
Mariposa Energy Project	Diamond Generating Corporation	Byron, CA	45 GWh	Sep 2012	Sep 2025	Natural Gas
Cabazon Wind Partners	Shell Wind Energy Inc.	Cabazon, CA	97 GWh	Sep 2002	Dec 2024	Wind
Foundation NWNA	Foundation CA Fund V Manager, LLC	Cabazon, CA	18 GWh	Nov 2012	Dec 2024	Wind
Foundation RRM	Foundation CA Fund V Manager, LLC	Cabazon, CA	9 GWh	Nov 2012	Dec 2024	Wind

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#26	Arizona Public Service Company	23.9 TWh	92
#54	Arlington Valley, LLC	3.4 TWh	1
#36	Balancing Authority of Northern California	14.7 TWh	87
#47	Imperial Irrigation District	6.3 TWh	66
#29	Los Angeles Department of Water and Power	18.9 TWh	124
#22	Nevada Power Company	37.2 TWh	139
#60	New Harquahala Generating Company, LLC	764.0 GWh	1
#19	Salt River Project Agricultural Improvement and Power District	60.0 TWh	48
#56	Turlock Irrigation District	2.1 TWh	11
#39	Western Area Power Administration - Desert Southwest Region	9.8 TWh	33

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#4	Electric Reliability Council of Texas, Inc.	485.0 TWh	1,313
#5	Southwest Power Pool	299.9 TWh	835
#6	Southern Company Services, Inc. - Trans	250.9 TWh	417
#7	California Independent System Operator	188.0 TWh	2,075
#9	Tennessee Valley Authority	161.6 TWh	204
#10	Florida Power & Light Co.	148.9 TWh	187
#12	New York Independent System Operator	131.6 TWh	1,211
#13	Duke Energy Carolinas	112.5 TWh	565
#15	ISO New England	105.5 TWh	1,577
#16	Bonneville Power Administration	80.5 TWh	163