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
Spring Street Solar 1 CSG	Spring Street Solar 1, LLC	Carver, MA	3 GWh	Feb 2017	Dec 2024	Solar
276 Federal Rd(CSG)	276FED WHAM8 Solar, LLC	Carver, MA	10 GWh	Oct 2021	Dec 2024	Solar
0 Hammond St CSG	0HAM WHAM8 Solar, LLC	Carver, MA	14 GWh	Sep 2021	Dec 2024	Solar
59 Federal Rd(CSG)	59FED WHAM8 Solar, LLC	Carver, MA	11 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 CSG	Altus Power America Management, LLC	Carver, MA	3 GWh	Apr 2019	Dec 2025	Solar
196 Tremont St(CSG)	196TRE WHAM8 Solar, LLC	Carver, MA	4 GWh	Oct 2021	Dec 2024	Solar
ER Sand Hill	Altus Power America Management, LLC	Castleton, VT	3 GWh	Oct 2022	Dec 2025	Solar
Cavendish	Green Mountain Power Corp	Cavendish, VT	1 GWh	Jan 1907	Dec 2025	Water
Kibby Wind Facility	Helix Maine Wind Development, LLC	Chain of Ponds, ME	242 GWh	Sep 2009	May 2026	Wind
Charlemont A	Agilitas Energy, Inc.	Charlemont, MA	3 GWh	Aug 2021	Dec 2025	Solar
Charlestown Wind Turbine	MWRA Charlestown	Charlestown, MA	1 GWh	Sep 2011	Dec 2025	Wind
Charlotte Solar LLC VT	Altus Power America Management, LLC	Charlotte, VT	3 GWh	Jun 2014	Dec 2025	Solar
Millennium Power	Millennium Power Company, LLC	Charlton, MA	995 GWh	Mar 2001	May 2026	Natural Gas
Griffin Road Solar, LLC CSG	Griffin Road Solar, LLC	Charlton, MA	3 GWh	Feb 2018	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
Depot Hill Solar CSG	CCC Solar Holdings LLC	Charlton, MA	3 GWh	Sep 2016	Dec 2025	Solar
McDougle-Mitchell Solar Project Hybrid C	AES Distributed Energy	Charlton, MA	7 GWh	Jul 2020	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
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
St. Joseph's Solar, LLC CSG	38 Degrees North, LLC	Charlton, MA	2 GWh	Nov 2017	Dec 2025	Solar
Incom Solar, LLC CSG	38 Degrees North, LLC	Charlton, MA	3 GWh	Oct 2017	Dec 2025	Solar
Seaboard Charlton, LLC	Navisun LLC	Charlton, MA	3 GWh	Nov 2020	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
BWC Stony Brook, LLC Hybrid	AES Distributed Energy	Chelmsford, MA	2 GWh	Jun 2021	Dec 2025	Solar
Town House	Nautilus Solar Solutions	Chelsea, ME	8 GWh	Nov 2022	Dec 2025	Solar
CTGB Maloney and Webster	TotalEnergies Renewables USA LLC	Cheshire, CT	3 GWh	Jun 2025	Dec 2025	Solar
Harbor Road Solar 1	Harbor Road Solar 1, LLC	Cheshire, MA	3 GWh	Nov 2021	Dec 2025	Solar
Chester Solar Farm	Kearsarge Solar LLC	Chester, MA	6 GWh	May 2014	Dec 2025	Solar
Chicopee Granby Road Solar	Citizens Enterprises Corporation	Chicopee, MA	2 GWh	Dec 2014	Dec 2025	Solar
Ameresco Chicopee Energy	AMERESCO Chicopee Energy LLC	Chicopee, MA	4 GWh	Jan 2004	Dec 2025	Landfill Gas
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
Dwight	Central Rivers Power MA, LLC	Chicopee, MA	6 GWh	Dec 1919	Dec 2025	Water
Chicopee	Captona Chicopee LLC	Chicopee, MA	2 GWh	Mar 2017	Dec 2025	Solar
Route 3 China Solar, LLC	REA Investments, LLC	China, ME	8 GWh	Nov 2022	Dec 2025	Solar
Oakfield Wind Project	Onward Energy	City of Oakfield, ME	340 GWh	Sep 2015	May 2026	Wind
Lower Village Water Power Project	Sugar River Power LLC	Claremont, NH	3 GWh	Apr 1995	Dec 2025	Water
Sugar Hill Solar 1	Sugar Hill Solar 1, LLC	Clifton Park, NY	8 GWh	Nov 2020	Dec 2025	Solar
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
Pisgah Mountain Wind	Pisgah Mountain, LLC	Clifton, ME	28 GWh	Nov 2016	Dec 2025	Wind
Cosgrove Intake and Power Station	Massachusetts Water Res Auth	Clinton, MA	646 MWh	Dec 1968	Jan 2025	Water
Generate Colchester Fuel Cells, LLC	Generate Colchester Fuel Cells, LLC	Colchester, CT	72 GWh	Sep 2021	Dec 2025	Natural Gas
Colchester 16	Green Mountain Power Corp	Colchester, VT	310 MWh	Sep 1965	Dec 2025	Distillate Fuel Oil
Wind Colebrook South	Wind Colebrook South	Colebrook, CT	11 GWh	Oct 2015	May 2026	Wind
Downeast Wind	Downeast Wind, LLC	Columbia, ME	364 GWh	Dec 2024	May 2026	Wind
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
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%
Deerfield 2	Great River Hydro, LLC	Conway, MA	29 GWh	Jul 1913	Dec 2025	Water
Dynamic Corinth (CSG)	MN8 Energy LLC	Corinth, ME	10 GWh	Sep 2022	Dec 2025	Solar
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 4	WED Coventry Four, LLC	Coventry, RI	3 GWh	Jul 2016	Dec 2025	Wind
WED Coventry 2	WED Coventry Two, LLC	Coventry, RI	9 GWh	Jul 2016	May 2026	Wind
WED Coventry 3	WED Coventry Three, LLC	Coventry, RI	3 GWh	Jul 2016	Dec 2025	Wind
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
ISM Solar Cranston CSG	Nautilus Solar Solutions	Cranston, RI	4 GWh	Nov 2020	Dec 2025	Solar
Gold Meadow Farms	Captona Lippitt Ave Cranston LLC	Cranston, RI	27 GWh	Apr 2019	Dec 2025	Solar
GD Johnson Scituate I, LLC	GD Johnson Scituate I, LLC	Cranston, RI	6 GWh	Nov 2021	Dec 2025	Solar
Hope Farm Solar, LLC	Adapture Renewables, Inc.	Cranston, RI	16 GWh	Aug 2019	Dec 2025	Solar
Central Power Plant	State of Rhode Island	Cranston, RI	19 GWh	Jul 1958	Mar 2026	Natural Gas : 97.5% Distillate Fuel Oil : 2.5%
Manville Hill Road Solar	Manville Hill Road Solar LLC	Cumberland, RI	7 GWh	Apr 2021	Dec 2025	Solar
Arctaris Saddleback Solar	Arctaris Saddleback Solar, LLC	Dallas Plantation, ME	7 GWh	Oct 2023	Dec 2025	Solar
Danbury Hospital Cogen Plant	Danbury Hospital	Danbury, CT	22 GWh	Oct 2011	Dec 2025	Natural Gas
Stetson Wind I	Evergreen Wind, LLC	Danforth, ME	146 GWh	Dec 2008	Dec 2025	Wind
Stetson Wind II	Evergreen Wind, LLC	Danforth, ME	55 GWh	Feb 2010	Dec 2025	Wind
West Danville 15	Green Mountain Power Corp	Danville, VT	2 GWh	Dec 1916	Dec 2025	Water
Fisher Road Solar	Fisher Road Solar I, LLC	Dartmouth, MA	7 GWh	Apr 2015	Dec 2025	Solar
Dartmouth II Solar	RWE Clean Energy	Dartmouth, MA	3 GWh	May 2012	Dec 2025	Solar
Dartmouth Solar	RWE Clean Energy	Dartmouth, MA	2 GWh	Feb 2011	Dec 2025	Solar
Dartmouth Landfill	CleanCapital Holdings	Dartmouth, MA	2 GWh	Jan 2013	Dec 2025	Solar
Acushnet- High Hill	CleanCapital Holdings	Dartmouth, MA	3 GWh	Feb 2013	Dec 2025	Solar
Dartmouth	Mass Solar, LLC	Dartmouth, MA	6 GWh	Mar 2014	Dec 2025	Solar
Dartmouth Power Associates LP	Dartmouth Energy Center	Dartmouth, MA	89 GWh	Feb 1992	Dec 2025	Natural Gas : 96.7% Distillate Fuel Oil : 3.3%
Acushnet Hawes Reed Road	CleanCapital Holdings	Dartmouth, MA	2 GWh	Jun 2012	Dec 2025	Solar
Faunce Corner Community Solar	Faunce Corner Road Dartmouth Solar 1, LLC	Dartmouth, MA	2 GWh	Jun 2022	Dec 2024	Solar
Dartmouth Farms Solar	Dartmouth Farms Solar, LLC	Dartmouth, MA	4 GWh	Oct 2017	Dec 2025	Solar
Skelton	Brookfield White Pine Hydro LLC	Dayton, ME	77 GWh	Dec 1947	Dec 2025	Water
Frito Lay Incorporated	Frito Lay Incorporated Dayville	Dayville, CT	25 GWh	Feb 2009	May 2026	Natural Gas
Lake Road Generating Plant	Lake Road Generating Co LP	Dayville, CT	6 TWh	Feb 2002	May 2026	Natural Gas
Deerfield CSG Solar	MN8 Energy LLC	Deerfield, MA	4 GWh	Nov 2017	Dec 2025	Solar
Dennis Landfill	Clean Focus Yield, LLC	Dennis, MA	8 GWh	Aug 2014	Dec 2025	Solar
Derby Fuel Cell	Derby Fuel Cell LLC	Derby, CT	110 GWh	Dec 2023	Dec 2025	Natural Gas
MDFA Devens-Saratoga	Terraform Arcadia	Devens, MA	3 GWh	Feb 2016	Dec 2025	Solar
Dighton Power Plant	Dighton Power, LLC	Dighton, MA	276 GWh	Apr 1999	Dec 2025	Natural Gas
DG Dighton LLC CSG	DG Dighton, LLC	Dighton, MA	5 GWh	Jun 2017	Dec 2025	Solar
Elm Street	ISM Solar Dighton 3, LLC	Dighton, MA	5 GWh	Nov 2020	Dec 2025	Solar
ISM Solar Dighton 2, LLC CSG	38 Degrees North, LLC	Dighton, MA	4 GWh	Nov 2017	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