ISO New England

Balancing Authority Summary Information

ISO New England is ranked #15 out of 64 balancing authorities in terms of total annual electricity generation.

Balancing Authority	ISO New England
States	Connecticut Maine Massachusetts New Hampshire New York Rhode Island Vermont
Last Update	Oct 2026
Annual Generation	112.2 TWh
Power Plants	1,667
Utilities	846
Ranked #15 out of 64 in terms of net annual generation
Ranked #10 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 54% Nuclear \| 25.3% Wind \| 5.7% Water \| 4.6% Other Fuel \| 4.5% Solar \| 1.6% Coal \| 0%

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Daily Net Generation for ISO New England for the past 3 Years

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Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Cronin Road Solar 1, LLC CSG Hybrid	AES Distributed Energy	Warren, MA	3 GWh	May 2020	Dec 2025	Solar
Cream Street Solar	Cream Street Solar, LLC	Hyde Park, NY	4 GWh	Nov 2020	Dec 2025	Solar
Cranberry Solar	GWE Cranberry Solar RT, LLC	Middleborough, MA	2 GWh	Nov 2016	Dec 2025	Solar
Cranberry Highway Solar LLC	Cranberry Highway Solar, LLC	Wareham, MA	3 GWh	Feb 2021	Dec 2025	Solar
CPV Towantic Energy Center	CPV Towantic, LLC	Oxford, CT	6 TWh	Apr 2018	Jul 2026	Natural Gas
CP Middletown Solar II LLC	Green Street Power Partners	Middletown, CT	2 GWh	Nov 2019	Dec 2025	Solar
CP Middletown Solar I LLC	Green Street Power Partners	Middletown, CT	2 GWh	Nov 2019	Dec 2025	Solar
CP East Hampton I & II Solar	NJR Clean Energy Ventures Corporation	East Hampton, CT	3 GWh	Jan 2021	Dec 2025	Solar
Coventry Photovoltaic, LLC	Coventry Photovoltaic, LLC	Coventry, VT	3 GWh	Jul 2014	Dec 2025	Solar
Coventry Clean Energy Corporation	Washington Electric Coop - (VT)	Coventry, VT	57 GWh	Jun 2005	Dec 2025	Landfill Gas
Covanta Southeastern Connecticut Company	Covanta Southeastern Connecticut Company	Preston, CT	106 GWh	Nov 1991	Jul 2026	Non-biogenic Municipal Solid Waste : 53.8% Biogenic Municipal Solid Waste : 44.0% Distillate Fuel Oil : 2.2%
Covanta Haverhill	Ogden Projects Inc-Haverhill	Haverhill, MA	291 GWh	Apr 1989	Jul 2026	Non-biogenic Municipal Solid Waste : 52.8% Biogenic Municipal Solid Waste : 43.2% Distillate Fuel Oil : 4.0%
Covanta Bristol Energy	Covanta Bristol Inc	Bristol, CT	108 GWh	Nov 1987	Jul 2026	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Cottage Street Solar Facility	Western Massachusetts Electric Company	Springfield, MA	4 GWh	Apr 2014	Jul 2026	Solar
Cosgrove Intake and Power Station	Massachusetts Water Res Auth	Clinton, MA	646 MWh	Dec 1968	Jan 2025	Water
Cos Cob	Connecticut Jet Power LLC	Greenwich, CT	2 GWh	Aug 1969	Dec 2025	Kerosene
Corkwood Solar (CSG)	NextGrid Corkwood, LLC	Howland, ME	6 GWh	Oct 2023	Dec 2025	Solar
CoreSite - Somerville	Bloom Energy	Somerville, MA	28 GWh	Aug 2020	Dec 2025	Natural Gas
Corbin Russwin Phase 3 Berlin	Powerflex	Berlin, CT	2 GWh	Mar 2018	Dec 2025	Solar
Coolidge Solar 1, LLC	Coolidge Solar I, LLC	Ludlow, VT	26 GWh	Nov 2018	Jul 2026	Solar
Connecticut College	Bloom Energy	New London, CT	10 GWh	Aug 2019	Dec 2025	Natural Gas
Conn Mun Electric Energy Coop	Tesla Inc.	Norwich, CT	1 GWh	Nov 2016	Dec 2025	Solar
Concord Solar Farm	Kearsarge Solar LLC	Concord, MA	2 GWh	Mar 2014	Dec 2025	Solar
Comerford	Great River Hydro, LLC	Monroe, NH	297 GWh	Aug 1930	Dec 2025	Water
Cold River Road Solar	Onsite Partners, LLC	North Clarendon, VT	3 GWh	Nov 2016	Dec 2025	Solar
Colchester 16	Green Mountain Power Corp	Colchester, VT	310 MWh	Sep 1965	Dec 2025	Distillate Fuel Oil
Cohasse Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	1 GWh	Sep 2017	Dec 2025	Solar
Cobble Mountain	City of Holyoke Gas and Elec Dept - (MA)	Granville, MA	7 GWh	Dec 1929	Dec 2025	Water
CMEEC - Rogers Rd Solar	Tesla Inc.	Norwich, CT	2 GWh	Jan 2017	Dec 2025	Solar
CMEEC - Polaris Park Solar Hybrid	Tesla Inc.	Gordon, CT	4 GWh	Jul 2017	Dec 2025	Solar : 99.9%
CMEEC - Norwich Stott St Solar Hybrid	Tesla Inc.	Norwich, CT	4 GWh	Nov 2016	Dec 2025	Solar
CMEEC - Navy NE Trident	Tesla Inc.	Groton, CT	1 GWh	May 2017	Dec 2025	Solar
CMEEC - Bozrah	Tesla Inc.	Bozrah, CT	3 GWh	Nov 2016	Dec 2025	Solar
Clinton Solar	Ecos Energy LLC	Griswold, CT	2 GWh	Apr 2021	Dec 2025	Solar
Clemons Road Solar	RPNY Solar 4, LLC	Minoa, NY	4 GWh	Jun 2024	Dec 2025	Solar
Clement Dam Hydro LLC	Eagle Creek Renewable Energy, LLC	Tilton, NH	7 GWh	Nov 1984	Oct 2025	Water
Cleary Flood Hybrid	City of Taunton - (MA)	Taunton, MA	54 GWh	May 1966	Dec 2025	Natural Gas : 94.0% Distillate Fuel Oil : 6.0%
Clark University	Clark University	Worcester, MA	4 GWh	Dec 2012	Dec 2025	Natural Gas
Clark Road Solar 1, LLC	Clark Road Solar 1, LLC	Gardner, MA	8 GWh	Nov 2020	Dec 2025	Solar
Clark Falls	Green Mountain Power Corp	Milton, VT	14 GWh	Jan 1937	Dec 2025	Water
Clarendon Solar Farm	Clarendon Solar Farm, LLC	North Clarendon, VT	3 GWh	Jun 2014	Dec 2025	Solar
Claire Solar Farm	Claire Solar Partners LLC	South Burlington, VT	4 GWh	Jun 2014	Dec 2025	Solar
Citizens Agawam Landfill Solar	Citizens Enterprises Corporation	Agawam, MA	3 GWh	Mar 2017	Dec 2025	Solar
Church Hill Road Augusta Solar, LLC	REA Investments, LLC	Augusta, ME	7 GWh	Jan 2022	Dec 2025	Solar
Chittenden County Solar Partners	Chittenden County Solar Partners LLC	South Burlington, VT	3 GWh	Apr 2011	Dec 2025	Solar
China Mill Hydro	New Hampshire Hydro Associates	Allenstown, NH	3 GWh	Jun 1981	Dec 2025	Water
Chicopee Solar	Citizens Enterprises Corporation	Chicopee, MA	4 GWh	Nov 2013	Dec 2025	Solar
Chicopee River Solar	Citizens Enterprises Corporation	Springfield, MA	3 GWh	Dec 2014	Dec 2025	Solar
Chicopee Granby Road Solar	Citizens Enterprises Corporation	Chicopee, MA	2 GWh	Dec 2014	Dec 2025	Solar
Chicopee	Captona Chicopee LLC	Chicopee, MA	2 GWh	Mar 2017	Dec 2025	Solar
Chester Solar Farm	Kearsarge Solar LLC	Chester, MA	6 GWh	May 2014	Dec 2025	Solar
Chester Power Partners	Altus Power America Management, LLC	North Chester, VT	2 GWh	Oct 2014	Dec 2025	Solar
Cherry Valley Solar, LLC CSG	38 Degrees North, LLC	Leicester, MA	2 GWh	Oct 2017	Dec 2025	Solar
Cherry Street	Town of Hudson - (MA)	Hudson, MA	320 MWh	Apr 1951	Dec 2025	Distillate Fuel Oil : 58.5% Natural Gas : 41.5%
Chemical	City of Holyoke Gas and Elec Dept - (MA)	Holyoke, MA	5 GWh	Dec 1934	Dec 2025	Water
Chatham Landfill	Clean Focus Yield, LLC	Chatham, MA	2 GWh	Aug 2014	Dec 2025	Solar
Charlton Solar I CSG	Charlton Solar I, LLC	Charlton, MA	5 GWh	Nov 2014	Dec 2025	Solar
Charlotte Solar LLC VT	Altus Power America Management, LLC	Charlotte, VT	3 GWh	Jun 2014	Dec 2025	Solar
Charlestown Wind Turbine	MWRA Charlestown	Charlestown, MA	1 GWh	Sep 2011	Dec 2025	Wind
Charles E Monty	Brookfield White Pine Hydro LLC	Lewiston, ME	114 GWh	Dec 1989	Dec 2025	Water
Charlemont A	Agilitas Energy, Inc.	Charlemont, MA	3 GWh	Aug 2021	Dec 2025	Solar
Chace Mill Winooski One	City of Burlington Electric - (VT)	Winooski, VT	17 GWh	Mar 1993	Dec 2025	Water
CES Sterling LLC	SunEdison LLC	Sterling, MA	3 GWh	Jan 2013	Dec 2025	Solar
CES Agawam Tuckahoe Solar Hybrid	CES Agawam Tuckahoe Solar LLC	Agawam, MA	7 GWh	Nov 2021	Dec 2025	Solar
Central Power Plant	State of Rhode Island	Cranston, RI	15 GWh	Jul 1958	Jul 2026	Natural Gas : 98.5% Distillate Fuel Oil : 1.5%
Central Heating Plant	University of Massachusetts Amherst	Amherst, MA	80 GWh	Sep 2007	Dec 2025	Natural Gas : 96.3% Distillate Fuel Oil : 3.7%
Centech Gas Generator	Town of Shrewsbury - (MA)	Shrewsbury, MA	428 MWh	Mar 2019	Dec 2025	Natural Gas
Centaurus Solar - MA	LSE Centaurus LLC	Ashland, MA	3 GWh	Oct 2016	Dec 2025	Solar
Cenergy - Wiscasset (CSG)	Luminace Sunbeam Development Holdings, LLC	Wiscasset, ME	8 GWh	Jun 2023	Dec 2025	Solar
Cenergy - Waterville (CSG)	Luminace Sunbeam Development Holdings, LLC	Waterville, ME	9 GWh	Jun 2023	Dec 2025	Solar
Cenergy - Richards (CSG)	Luminace Sunbeam Development Holdings, LLC	Fairfield, ME	2 GWh	Sep 2023	Dec 2025	Solar
Cenergy - Pulk	BAP Grounded 2 LLC	Sabattus, ME	8 GWh	Nov 2024	Dec 2025	Solar
Cenergy - Kiger	Luminace Sunbeam Development Holdings, LLC	Embden, ME	2 GWh	Nov 2023	Dec 2025	Solar
Cellu Tissue	Dunn Paper East Hartford, LLC	East Hartford, CT	11 GWh	Apr 2009	Jul 2026	Natural Gas
Cedarville CSG	Altus Power America Management, LLC	Plymouth, MA	914 MWh	Jun 2017	Dec 2025	Solar
CED Westfield Solar, LLC	RWE Clean Energy	Westfield, MA	3 GWh	Jul 2016	Dec 2025	Solar
CED Northampton Solar LLC Hybrid	RWE Clean Energy	Northampton, MA	6 GWh	Nov 2019	Dec 2025	Solar
CED Foster	RWE Clean Energy	Foster, RI	3 GWh	Nov 2017	Jul 2026	Solar
CED Chicopee Solar	RWE Clean Energy	Chicopee, MA	5 GWh	Jun 2017	Dec 2025	Solar
CCSU Fuel Cell Project	New Britain Renewable Energy, LLC	New Britain, CT	7 GWh	Mar 2012	Dec 2025	Natural Gas
CCSU Co-Gen-STBY Gen	Central Connecticut State University	New Britain, CT	10 MWh	Sep 1993	Dec 2025	Natural Gas
Cavendish	Green Mountain Power Corp	Cavendish, VT	1 GWh	Jan 1907	Dec 2025	Water
Caterpillar Hill	AES Clean Energy	Sedgwick, ME	9 GWh	Nov 2023	Dec 2025	Solar
Cataract Hydro	Brookfield White Pine Hydro LLC	Saco, ME	23 GWh	Dec 1936	Dec 2025	Water
Carver MA 1 Community Solar	Navisun LLC	Carver, MA	3 GWh	Aug 2016	Dec 2025	Solar
Carver Falls	Green Mountain Power Corp	Hampton, NY	4 GWh	Jan 1922	Dec 2025	Water
Carver CSG	Altus Power America Management, LLC	Carver, MA	3 GWh	Apr 2019	Dec 2025	Solar
Carver	Captona Carver LLC	North Carver, MA	2 GWh	Apr 2017	Dec 2025	Solar
Caribou Solar	SoCore Energy LLC	Caribou, ME	6 GWh	Nov 2024	Dec 2025	Solar
Caribou	Altus Power America Management, LLC	Caribou, ME	6 GWh	Jul 2023	Dec 2025	Solar
Cape Gas Turbine	FPL Energy Cape LLC	Portland, ME	752 MWh	Dec 1969	Dec 2025	Distillate Fuel Oil
Cape Cod Air Force Station - 6 SWS	US Space Force	Sagamore, MA	6 GWh	Dec 2013	Jul 2026	Wind
Canton Mountain Wind	CPV Canton Mountain Wind LLC	Canton, ME	56 GWh	Oct 2017	Dec 2025	Wind
Canton GLC Solar, LLC	Addicus Advisors	Canton, ME	5 GWh	Mar 2024	Dec 2025	Solar
Canton	Captona Canton LLC	Canton, MA	6 GWh	Jul 2012	Dec 2025	Solar
Canis Minor Solar Farm	LSE Canis Minor LLC	Barkhamsted, CT	2 GWh	Nov 2016	Dec 2025	Solar
Canis Major Solar Farm	LSE Canis Major LLC	Suffield, CT	3 GWh	Nov 2016	Dec 2025	Solar
Canal	Canal Generating LLC	Sandwich, MA	467 GWh	May 1968	Jul 2026	Residual Fuel Oil : 59.3% Natural Gas : 28.9% Distillate Fuel Oil : 11.7%
Canaan	Central Rivers Power NH, LLC	Canaan, VT	6 GWh	Jul 1927	Dec 2025	Water
Camelot Wind LLC	Camelot Wind LLC	Plymouth, MA	3 GWh	Sep 2012	Dec 2025	Wind

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	433.0 GWh	4
#24	Dominion Energy South Carolina, Inc.	26.1 TWh	83
#13	Duke Energy Carolinas	113.4 TWh	578
#17	Duke Energy Progress East	66.2 TWh	574
#50	Duke Energy Progress West	4.6 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#12	New York Independent System Operator	134.1 TWh	1,334
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#28	South Carolina Public Service Authority	19.6 TWh	35
#59	Southeastern Power Administration	1.2 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#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
#17	Duke Energy Progress East	66.2 TWh	574
#18	PacifiCorp East	61.4 TWh	223
#19	Salt River Project Agricultural Improvement and Power District	60.5 TWh	51