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	Jul 2026
Annual Generation	111.1 TWh
Power Plants	1,629
Utilities	833
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 \| 54.9% Nuclear \| 25% Wind \| 5.1% Water \| 4.5% Other Fuel \| 4.4% Solar \| 1.6% Coal \| 0.1%

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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
Coventry Clean Energy Corporation	Washington Electric Coop - (VT)	Coventry, VT	57 GWh	Jun 2005	Dec 2025	Landfill Gas
WED Coventry Seven, LLC	WED Coventry Seven, LLC	Coventry, RI	5 GWh	Nov 2020	Dec 2025	Solar
WED Coventry 1	WED Coventry One, LLC	Coventry, RI	3 GWh	Sep 2016	Dec 2025	Wind
WED Coventry 6	Greenbacker Renewable Energy Corporation	Coventry, RI	8 GWh	Jul 2016	May 2026	Wind
WED Coventry 5	Greenbacker Renewable Energy Corporation	Coventry, RI	3 GWh	Feb 2017	Dec 2025	Wind
WED Coventry 2	WED Coventry Two, LLC	Coventry, RI	9 GWh	Jul 2016	May 2026	Wind
WED Coventry 4	WED Coventry Four, LLC	Coventry, RI	3 GWh	Jul 2016	Dec 2025	Wind
WED Coventry 3	WED Coventry Three, LLC	Coventry, RI	3 GWh	Jul 2016	Dec 2025	Wind
Dynamic Corinth (CSG)	MN8 Energy LLC	Corinth, ME	10 GWh	Sep 2022	Dec 2025	Solar
Deerfield 2	Great River Hydro, LLC	Conway, MA	29 GWh	Jul 1913	Dec 2025	Water
Wheelabrator Concord Facility	Wheelabrator Environmental Systems	Concord, NH	93 GWh	Mar 1989	May 2026	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Concord Solar Farm	Kearsarge Solar LLC	Concord, MA	2 GWh	Mar 2014	Dec 2025	Solar
Kearsarge Concord II	Kearsarge Concord II LLC	Concord, MA	7 GWh	Dec 2016	Dec 2025	Solar
Downeast Wind	Downeast Wind, LLC	Columbia, ME	364 GWh	Dec 2024	May 2026	Wind
Wind Colebrook South	Wind Colebrook South	Colebrook, CT	11 GWh	Oct 2015	May 2026	Wind
Colchester 16	Green Mountain Power Corp	Colchester, VT	310 MWh	Sep 1965	Dec 2025	Distillate Fuel Oil
Generate Colchester Fuel Cells, LLC	Generate Colchester Fuel Cells, LLC	Colchester, CT	72 GWh	Sep 2021	Dec 2025	Natural Gas
Cosgrove Intake and Power Station	Massachusetts Water Res Auth	Clinton, MA	646 MWh	Dec 1968	Jan 2025	Water
Pisgah Mountain Wind	Pisgah Mountain, LLC	Clifton, ME	28 GWh	Nov 2016	Dec 2025	Wind
Silver Maple	WEB Silver Maple Wind LLC	Clifton, ME	64 GWh	Sep 2022	Dec 2025	Wind
SP-231 Clifton	Madison Energy Investments LLC	Clifton, ME	5 GWh	Nov 2024	Dec 2025	Solar
Sugar Hill Solar 1	Sugar Hill Solar 1, LLC	Clifton Park, NY	8 GWh	Nov 2020	Dec 2025	Solar
Lower Village Water Power Project	Sugar River Power LLC	Claremont, NH	3 GWh	Apr 1995	Dec 2025	Water
Oakfield Wind Project	Onward Energy	City of Oakfield, ME	340 GWh	Sep 2015	May 2026	Wind
Route 3 China Solar, LLC	REA Investments, LLC	China, ME	8 GWh	Nov 2022	Dec 2025	Solar
Chicopee	Captona Chicopee LLC	Chicopee, MA	2 GWh	Mar 2017	Dec 2025	Solar
Chicopee Granby Road Solar	Citizens Enterprises Corporation	Chicopee, MA	2 GWh	Dec 2014	Dec 2025	Solar
Dwight	Central Rivers Power MA, LLC	Chicopee, MA	6 GWh	Dec 1919	Dec 2025	Water
CED Chicopee Solar	RWE Clean Energy	Chicopee, MA	5 GWh	Jun 2017	Dec 2025	Solar
Front Street	City of Chicopee - (MA)	Chicopee, MA	1 GWh	Dec 1977	Dec 2025	Distillate Fuel Oil
Chicopee Solar	Citizens Enterprises Corporation	Chicopee, MA	4 GWh	Nov 2013	Dec 2025	Solar
Ameresco Chicopee Energy	AMERESCO Chicopee Energy LLC	Chicopee, MA	4 GWh	Jan 2004	Dec 2025	Landfill Gas
Chester Solar Farm	Kearsarge Solar LLC	Chester, MA	6 GWh	May 2014	Dec 2025	Solar
Harbor Road Solar 1	Harbor Road Solar 1, LLC	Cheshire, MA	3 GWh	Nov 2021	Dec 2025	Solar
CTGB Maloney and Webster	TotalEnergies Renewables USA LLC	Cheshire, CT	3 GWh	Jun 2025	Dec 2025	Solar
Town House	Nautilus Solar Solutions	Chelsea, ME	8 GWh	Nov 2022	Dec 2025	Solar
BWC Stony Brook, LLC Hybrid	AES Distributed Energy	Chelmsford, MA	2 GWh	Jun 2021	Dec 2025	Solar
0 Middle	Madison Energy Investments LLC	Chatham, MA	3 GWh	Aug 2022	Dec 2025	Solar
Chatham Landfill	Clean Focus Yield, LLC	Chatham, MA	2 GWh	Aug 2014	Dec 2025	Solar
Griffin Road Solar, LLC CSG	Griffin Road Solar, LLC	Charlton, MA	3 GWh	Feb 2018	Dec 2025	Solar
Millennium Power	Millennium Power Company, LLC	Charlton, MA	995 GWh	Mar 2001	May 2026	Natural Gas
Depot Hill Solar CSG	CCC Solar Holdings LLC	Charlton, MA	3 GWh	Sep 2016	Dec 2025	Solar
Curtis Hill Solar CSG	CCC Solar Holdings LLC	Charlton, MA	3 GWh	Sep 2016	Dec 2024	Solar
Sampson Road Community Solar	Sampson Road Solar, LLC	Charlton, MA	3 GWh	Nov 2017	Dec 2025	Solar
Charlton Solar I CSG	Charlton Solar I, LLC	Charlton, MA	5 GWh	Nov 2014	Dec 2025	Solar
Griffin Road Solar 2	Griffin Road Solar 2, LLC	Charlton, MA	2 GWh	May 2020	Dec 2025	Solar
Partridge Hill Solar Hybrid	AES Distributed Energy	Charlton, MA	3 GWh	Jun 2020	Dec 2025	Solar
Incom Solar, LLC CSG	38 Degrees North, LLC	Charlton, MA	3 GWh	Oct 2017	Dec 2025	Solar
McDougle-Mitchell Solar Project Hybrid C	AES Distributed Energy	Charlton, MA	7 GWh	Jul 2020	Dec 2025	Solar
St. Joseph's Solar, LLC CSG	38 Degrees North, LLC	Charlton, MA	2 GWh	Nov 2017	Dec 2025	Solar
Lilly Lane	LSE Chamaeleon LLC	Charlton, MA	2 GWh	May 2018	Oct 2025	Solar
Sturbridge Barn	LSE Ara LLC	Charlton, MA	2 GWh	May 2018	Dec 2025	Solar
Seaboard Charlton, LLC	Navisun LLC	Charlton, MA	3 GWh	Nov 2020	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
Charlemont A	Agilitas Energy, Inc.	Charlemont, MA	3 GWh	Aug 2021	Dec 2025	Solar
Kibby Wind Facility	Helix Maine Wind Development, LLC	Chain of Ponds, ME	242 GWh	Sep 2009	May 2026	Wind
Cavendish	Green Mountain Power Corp	Cavendish, VT	1 GWh	Jan 1907	Dec 2025	Water
ER Sand Hill	Altus Power America Management, LLC	Castleton, VT	3 GWh	Oct 2022	Dec 2025	Solar
Carver CSG	Altus Power America Management, LLC	Carver, MA	3 GWh	Apr 2019	Dec 2025	Solar
0 Hammond St CSG	0HAM WHAM8 Solar, LLC	Carver, MA	14 GWh	Sep 2021	Dec 2024	Solar
276 Federal Rd(CSG)	276FED WHAM8 Solar, LLC	Carver, MA	10 GWh	Oct 2021	Dec 2024	Solar
59 Federal Rd(CSG)	59FED WHAM8 Solar, LLC	Carver, MA	11 GWh	Oct 2021	Dec 2024	Solar
196 Tremont St(CSG)	196TRE WHAM8 Solar, LLC	Carver, MA	4 GWh	Oct 2021	Dec 2024	Solar
Ward Solar 1, LLC	REA Investments, LLC	Carver, MA	3 GWh	Jan 2019	Dec 2025	Solar
Ravenbrook	Captona Ravenbrook LLC	Carver, MA	6 GWh	Nov 2013	Dec 2025	Solar
Carver MA 1 Community Solar	Navisun LLC	Carver, MA	3 GWh	Aug 2016	Dec 2025	Solar
Spring Street Solar 1 CSG	Spring Street Solar 1, LLC	Carver, MA	3 GWh	Feb 2017	Dec 2024	Solar
Saddleback Ridge Wind Farm	CPV Saddleback Ridge Wind, LLC	Carthage, ME	90 GWh	Nov 2014	Dec 2025	Wind
ME Novel Lighthouse - Carrabassett	Luminace Sunbeam Development Holdings, LLC	Carrabassett Valley, ME	7 GWh	Nov 2023	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
Canton	Captona Canton LLC	Canton, MA	6 GWh	Jul 2012	Dec 2025	Solar
Canton GLC Solar, LLC	REA Investments, LLC	Canton, ME	5 GWh	Mar 2024	Dec 2025	Solar
Canton Mountain Wind	CPV Canton Mountain Wind LLC	Canton, ME	56 GWh	Oct 2017	Dec 2025	Wind
Quinebaug Solar	Quinebaug Solar, LLC	Canterbury, CT	74 GWh	Nov 2021	May 2026	Solar
Lenox Renewables	Lenox Renewables, LLC	Canastota, NY	6 GWh	Aug 2021	Dec 2025	Solar
Canaan	Central Rivers Power NH, LLC	Canaan, VT	6 GWh	Jul 1927	Dec 2025	Water
Mass Inst Tech Cntrl Utilities/Cogen Plt	Massachusetts Inst of Tech	Cambridge, MA	209 GWh	May 1995	Dec 2025	Natural Gas
Kendall Square Station	Kendall Green Energy, LLC	Cambridge, MA	1 TWh	May 1949	May 2026	Natural Gas : 97.3% Distillate Fuel Oil : 2.7%
Greene County Meter #1	Tesla Inc.	Cairo, NY	2 GWh	Jan 2018	Dec 2025	Solar
West Buxton	Brookfield White Pine Hydro LLC	Buxton, ME	21 GWh	Dec 1903	Dec 2025	Water
Douglas Pike Solar, LLC	Navisun LLC	Burrillville, RI	3 GWh	May 2023	Dec 2025	Solar
Kearsarge Smithfield LLC	Kearsarge Smithfield LLC	Burrillville, RI	14 GWh	Mar 2023	Dec 2025	Solar
Nautilus Goat Island Solar LLC (CSG)	Nautilus Solar Solutions	Burrillville, RI	4 GWh	Jul 2019	Dec 2025	Solar
Town of Burrillville Solar CSG	Standard Solar	Burrillville, RI	7 GWh	Sep 2020	Dec 2025	Solar
Pittsfield Hydro	KEI (Maine) Power Management (II) LLC	Burnham, ME	3 GWh	Jun 1986	Dec 2025	Water
J C McNeil	City of Burlington Electric - (VT)	Burlington, VT	224 GWh	May 1984	Apr 2026	Wood/Wood Waste Solids : 99.8%
Burlington GT	City of Burlington Electric - (VT)	Burlington, VT	684 MWh	Aug 1971	Dec 2025	Distillate Fuel Oil
Burlington Solar 1	DG Connecticut III, LLC	Burlington, CT	6 GWh	Jan 2022	Dec 2025	Solar
Penobscot Narrows Solar I	Penobscot Narrows Solar I LLC	Bucksport, ME	7 GWh	May 2024	Dec 2025	Solar
Bucksport Generation LLC	Bucksport Generation LLC	Bucksport, ME	29 GWh	Jun 1965	May 2026	Natural Gas : 57.8% Distillate Fuel Oil : 42.2%
Gardners Falls	Central Rivers Power MA, LLC	Buckland, MA	11 GWh	Dec 1913	Dec 2025	Water
Deerfield 3	Great River Hydro, LLC	Buckland, MA	26 GWh	Jul 1912	Dec 2025	Water
Deerfield 4	Great River Hydro, LLC	Buckland, MA	21 GWh	Jul 1912	Dec 2025	Water
Spruce Mountain WInd	CPV Spruce Mountain Wind LLC	Bryant Pond, ME	53 GWh	Nov 2011	Dec 2025	Wind
Brunswick Hydro	Brookfield White Pine Hydro LLC	Brunswick, ME	70 GWh	Feb 1982	Dec 2025	Water
SCS Harpswell 012903 Brunswick, LLC	Arevon Energy, Inc.	Brunswick, ME	7 GWh	Oct 2022	Dec 2025	Solar
Quinebaug Lower Project	Quinebaug Associates LLC	Brooklyn, CT	5 GWh	Mar 1990	Dec 2025	Water
Brookfield Wire Company	Dynamic Energy Solutions, LLC	Brookfield, MA	2 GWh	May 2016	Dec 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	442.5 GWh	4
#24	Dominion Energy South Carolina, Inc.	25.3 TWh	83
#13	Duke Energy Carolinas	112.6 TWh	577
#17	Duke Energy Progress East	64.5 TWh	565
#50	Duke Energy Progress West	4.5 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	33.9 TWh	25
#12	New York Independent System Operator	134.3 TWh	1,299
#1	PJM Interconnection, LLC	882.8 TWh	2,652
#31	South Carolina Public Service Authority	18.5 TWh	35
#59	Southeastern Power Administration	1.3 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	169.4 TWh	2,135
#9	Tennessee Valley Authority	163.4 TWh	207
#10	Florida Power & Light Co.	152.2 TWh	187
#12	New York Independent System Operator	134.3 TWh	1,299
#13	Duke Energy Carolinas	112.6 TWh	577
#15	ISO New England	111.1 TWh	1,629
#16	Bonneville Power Administration	91.6 TWh	167
#17	Duke Energy Progress East	64.5 TWh	565
#18	PacifiCorp East	60.9 TWh	222
#19	Salt River Project Agricultural Improvement and Power District	60.3 TWh	49