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
BWC Lake Lashaway, LLC Hybrid	AES Distributed Energy	North Brookfield, MA	8 GWh	Apr 2021	Dec 2025	Solar
ZPD-PT Solar Project 2017-044 LLC CSG	AES Distributed Energy	Spencer, MA	812 MWh	Sep 2021	Dec 2025	Solar
ZPD-PT Solar Project 2017-023 LLC Hybrid	AES Distributed Energy	Southbridge, MA	4 GWh	Dec 2020	Dec 2025	Solar
ZPD-PT Solar Project 2017-021 LLC Hybrid	AES Distributed Energy	Wilbraham, MA	2 GWh	Dec 2020	Dec 2025	Solar
Auburn Solar Project	Agilitas Energy, Inc.	Auburn, MA	8 GWh	Apr 2022	Dec 2025	Solar
Blair Solar	Ecos Energy LLC	Somers, CT	2 GWh	Dec 2020	Dec 2025	Solar
Madison Solar (CT)	Ecos Energy LLC	Somers, CT	2 GWh	Dec 2020	Dec 2025	Solar
Few Solar	Ecos Energy LLC	Somers, CT	2 GWh	Dec 2020	Dec 2025	Solar
Hadley 3 Solar (North)	Hadley 3 Solar, LLC (North)	Hadley, MA	3 GWh	Nov 2019	Dec 2025	Solar
Hadley 3 Solar (South)	Hadley 3 Solar, LLC (South)	Hadley, MA	3 GWh	Nov 2019	Dec 2025	Solar
Lawrence Brook	Greenbacker Renewable Energy Corporation	Morristown, VT	3 GWh	Nov 2020	Dec 2025	Solar
Roger Williams - Melville at Portsmouth	Luminace Solar Rhode Island, LLC	Portsmouth, RI	5 GWh	Feb 2021	Dec 2025	Solar
WED Coventry Seven, LLC	WED Coventry Seven, LLC	Coventry, RI	5 GWh	Nov 2020	Dec 2025	Solar
GD Glocester White Oak I, LLC	GD Glocester White Oak I, LLC	Glocester, RI	3 GWh	Nov 2020	Dec 2025	Solar
Plainfield Solar 1	Ecos Energy LLC	Plainfield, CT	2 GWh	Dec 2019	Dec 2025	Solar
ZPD-PT Solar Project 2017-006 LLC Hybrid	AES Distributed Energy	Warren, MA	6 GWh	Jun 2021	Dec 2025	Solar
Georges River Energy	Robbins Lumber Inc	Searsmont, ME	51 GWh	Nov 2018	Dec 2025	Wood/Wood Waste Solids
Wilbraham	BWC East Brook, LLC	Wilbraham, MA	6 GWh	Nov 2020	Dec 2025	Solar
Elm Street	ISM Solar Dighton 3, LLC	Dighton, MA	5 GWh	Nov 2020	Dec 2025	Solar
Breckenridge Solar	Breckenridge Street Solar 1, LLC	Palmer, MA	6 GWh	Oct 2020	Dec 2025	Solar
Rounseville Solar	Rounseville Solar 1, LLC	Rochester, MA	4 GWh	Jan 2020	Dec 2025	Solar
Town of Ware - Canadian Tree(CSG)	MA CS Ware West, LLC	Ware, MA	2 GWh	Nov 2021	Dec 2025	Solar
Wilmarth Solar	Wilmarth Lane Solar 1, LLC	Plainville, MA	8 GWh	Jan 2020	Dec 2025	Solar
Dresser Hill CSG	Dresser Hill Solar, LLC	Southbridge, MA	6 GWh	Dec 2020	Dec 2025	Solar
Golden Solar	Cardinal Renewables	St. Johnsbury, VT	4 GWh	Oct 2021	Dec 2025	Solar
Merrimack Solar Farm, LLC	Merrimack Solar Farm	Merrimack, NH	3 GWh	Dec 2018	Dec 2025	Solar
Raboth - Marion Drive	Madison Energy Holdings LLC	Kingston, MA	4 GWh	Feb 2021	Dec 2025	Solar
Woodville Solar (CSG)	Standard Solar	Woodville, RI	5 GWh	Nov 2024	Dec 2025	Solar
Norton	Madison Energy Holdings LLC	Norton, MA	2 GWh	Feb 2023	Dec 2025	Solar
Smithfield Solar Farm, LLC	Smithfield Solar Farm	Smithfield, RI	4 GWh	Jun 2020	Dec 2025	Solar
Wallingford Solar	Wallingford Renewable Energy, LLC	Wallingford, CT	15 GWh	Aug 2021	Dec 2025	Solar
Dudley	AMP MA Dudley	Dudley, MA	8 GWh	Jun 2018	Dec 2025	Solar
Joe Jenny	AMP MA Joe Jenny	Oxford, MA	2 GWh	Apr 2018	Dec 2025	Solar
Westport Community Solar Garden	BWC Bass River LLC	Westport, MA	2 GWh	Jun 2017	Dec 2025	Solar
Mendon	BWC Box Pond LLC	Mendon, MA	3 GWh	Nov 2017	Dec 2025	Solar
Dover (MA)	BWC Buckmaster Pond LLC	Dover, MA	2 GWh	Jul 2017	Dec 2025	Solar
Adirondack A+B Community Solar Garden	BWC Connecticut River LLC	Westport, MA	9 GWh	Nov 2018	Dec 2025	Solar
Westport B Community Solar Garden	BWC Hamilton Brook LLC	Westport, MA	8 GWh	Oct 2018	Dec 2025	Solar
TPE King Solar Holdings1, LLC (CSG)	Nautilus Solar Solutions	North Smithfield, RI	18 GWh	Mar 2022	Dec 2025	Solar
Kearsarge William Way	Kearsarge William Way LLC	Bellingham, MA	7 GWh	Nov 2021	Dec 2025	Solar
Kearsarge Haverhill	Kearsarge Haverhill LLC	Haverhill, MA	4 GWh	Feb 2021	Dec 2025	Solar
Kearsarge Upper Union	Kearsarge Upper Union LLC	Franklin, MA	2 GWh	Feb 2023	Dec 2025	Solar
Kearsarge Montague BD(CSG)	Kearsarge Montague BD LLC	Montague, MA	3 GWh	Oct 2021	Dec 2025	Solar
Blodgett Solar CSG	Blodgett Street Solar 1, LLC	Tyngsboro, MA	9 GWh	Jul 2021	Dec 2025	Solar
Clark Road Solar 1, LLC	Clark Road Solar 1, LLC	Gardner, MA	8 GWh	Nov 2020	Dec 2025	Solar
Acton	Acton H Road Solar 1, LLC	Acton, ME	5 GWh	Nov 2021	Dec 2025	Solar
Naples	Naples Casco Solar 1, LLC	Naples, ME	3 GWh	Nov 2021	Dec 2025	Solar
Fredonia Solar LLC	Altus Power America Management, LLC	Fredonia, NY	1 GWh	Aug 2021	Dec 2025	Solar
Dunstable Solar 1, LLC	AES Distributed Energy	Dunstable, MA	8 GWh	Mar 2021	Dec 2025	Solar
Fairhaven MA 2	RWE Clean Energy	Fairhaven, MA	4 GWh	Aug 2021	Dec 2025	Solar
Acushnet MA 1	Navisun LLC	Acushnet, MA	1 GWh	Nov 2023	Dec 2025	Solar
Acushnet MA 2 (CSG)	Navisun LLC	Acushnet, MA	1 GWh	Feb 2024	Dec 2025	Solar
Dusenberry	AES Distributed Energy	Troy, NY	7 GWh	Nov 2021	Dec 2025	Solar
Knapp East (CSG)	AES Distributed Energy	Akron, NY	7 GWh	Nov 2021	Dec 2025	Solar
Main Rd Community Solar	AES Distributed Energy	Newstead, NY	8 GWh	Jun 2022	Dec 2025	Solar
Redman North Community Solar	AES Distributed Energy	Brockport, NY	106 MWh	Jan 2022	Dec 2025	Solar
Glenmere Lake	AES Distributed Energy	Goshen, NY	3 GWh	May 2021	Dec 2025	Solar
Knapp West(CSG)	AES Distributed Energy	Akron, NY	6 GWh	Nov 2021	Dec 2025	Solar
Rowe (CSG)	AES Distributed Energy	Olean, NY	8 GWh	Oct 2021	Dec 2025	Solar
Alton Road Solar	Revity Energy LLC	Bradford, RI	24 GWh	Nov 2019	Dec 2025	Solar
Townline Community Solar	AES Distributed Energy	Batavia, NY	7 GWh	Jan 2022	Dec 2025	Solar
Williams Rd	AES Distributed Energy	Ransomville, NY	6 GWh	Aug 2021	Dec 2025	Solar
West Haydenville PJ Community Solar	AES Distributed Energy	Williamsburg, MA	9 GWh	Aug 2022	Dec 2025	Solar : 99.8%
Brookwood Drive Community Solar	AES Distributed Energy	Westport, MA	5 GWh	Jul 2022	Dec 2025	Solar
Maple(CSG)	Maple Street Solar 1, LLC	Bellingham, MA	7 GWh	Oct 2021	Dec 2025	Solar
FDX010.0 FedEx Fuel Cell	2016 ESA Project Company, LLC	Middletown, CT	8 GWh	Aug 2018	Dec 2025	Natural Gas
Old Middleboro Road Solar	Agilitas Energy, Inc.	Rochester, MA	8 GWh	Dec 2022	Dec 2025	Solar
Kearsarge Westerly	Kearsarge Westerly LLC	Westerly, RI	7 GWh	Nov 2020	Dec 2025	Solar
Kearsarge Fogland	Kearsarge Fogland LLC	Tiverton, RI	3 GWh	Oct 2020	Dec 2025	Solar
Kearsarge East Providence	Kearsarge East Providence LLC	East Providence, RI	4 GWh	Nov 2020	Dec 2025	Solar
Three Rivers Solar LLC	ASD Three Rivers Road MA Solar LLC	Wilbraham, MA	6 GWh	Oct 2024	Dec 2025	Solar
Billings Road	Altus Power America Management, LLC	Hardwick, VT	2 GWh	Oct 2021	Dec 2025	Solar
ER Salvage Yard	Altus Power America Management, LLC	Morrisville, VT	3 GWh	Oct 2021	Dec 2025	Solar
276 Federal Rd(CSG)	276FED WHAM8 Solar, LLC	Carver, MA	9 GWh	Oct 2021	Dec 2025	Solar
0 Hammond St CSG	0HAM WHAM8 Solar, LLC	Carver, MA	14 GWh	Sep 2021	Dec 2025	Solar
59 Federal Rd(CSG)	59FED WHAM8 Solar, LLC	Carver, MA	11 GWh	Oct 2021	Dec 2025	Solar
Park St	Greenbacker Renewable Energy Corporation	Rutland, VT	2 GWh	Nov 2014	Dec 2025	Solar
Torrington Solar One, LLC	DG Connecticut III, LLC	Torrington, CT	3 GWh	Feb 2021	Dec 2025	Solar
Bristol Solar One, LLC	DG Connecticut III, LLC	Bristol, CT	5 GWh	Apr 2021	Dec 2025	Solar
Watertown Solar One, LLC	DG Connecticut III, LLC	Watertown, CT	3 GWh	May 2021	Dec 2025	Solar
UMass Boston	MSS Energy Holdings, LLC (d.b.a. Calibrant Energy)	Dorchester, MA	1 GWh	Dec 1971	Dec 2025	Solar
ASD Cotuit MA Solar LLC	ASD Cotuit MA Solar LLC	Sandwich, MA	4 GWh	Oct 2023	Dec 2025	Solar
ASD Wallum MA Solar LLC(CSG)	ASD Wallum MA Solar LLC	Douglas, MA	9 GWh	Dec 2021	Dec 2025	Solar
FedEx Middletown	VCP Realty, LLC	Middletown, CT	2 GWh	Oct 2024	Dec 2025	Solar
Enfield Solar One	Enfield Solar One, LLC	Hartford, CT	8 GWh	Mar 2024	Dec 2025	Solar
71 Charlotte Furnace Rd Hybrid(CSG)	71CFR WHAM8 Solar, LLC	Wareham, MA	3 GWh	Nov 2021	Dec 2025	Solar : 99.8%
77 Farm to Market Rd Hybrid(CSG)	77F2M WHAM8 Solar, LLC	Wareham, MA	9 GWh	Nov 2021	Dec 2025	Solar
160 Tihonet Rd Hybrid(CSG)	160TIH WHAM8 Solar, LLC	Wareham, MA	10 GWh	Nov 2021	Dec 2025	Solar
299 Farm to Market Rd Hybrid(CSG)	299F2M WHAM8 Solar, LLC	Wareham, MA	5 GWh	Nov 2021	Dec 2025	Solar
Halifax Solar	NuGen Capital Management	Halifax, MA	4 GWh	Jul 2015	Dec 2025	Solar
580 River Solar	NuGen Capital Management	Winchendon, MA	4 GWh	Aug 2018	Dec 2025	Solar
115 G Fisher	Greenbacker Renewable Energy Corporation	Middleborough, MA	2 GWh	Sep 2015	Dec 2025	Solar
154 D Fisher	Greenbacker Renewable Energy Corporation	Middleborough, MA	2 GWh	Nov 2015	Dec 2025	Solar
North Haven Solar One	North Haven Solar One, LLC	North Haven, CT	3 GWh	Feb 2024	Dec 2025	Solar
River Road	Norridgewock River Road Solar, LLC	Norridgewock, ME	8 GWh	Feb 2022	Dec 2025	Solar
196 Tremont St(CSG)	196TRE WHAM8 Solar, LLC	Carver, MA	4 GWh	Oct 2021	Dec 2025	Solar
ER Bone Hill Solar, LLC	Altus Power America Management, LLC	Northfield, VT	2 GWh	Aug 2022	Dec 2025	Solar
Bristol Landfill Solar	NuGen Capital Management	Bristol, RI	9 GWh	Feb 2024	Dec 2025	Solar
East Windsor Solar Two	East Windsor Solar Two, LLC	East Windsor, CT	749 MWh	Aug 2025	Dec 2025	Solar
Clinton Solar	Ecos Energy LLC	Griswold, CT	2 GWh	Apr 2021	Dec 2025	Solar

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