ISO New England

Balancing Authority Summary Information

ISO New England is ranked #15 out of 65 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	Nov 2025
Annual Generation	105.5 TWh
Power Plants	1,577
Utilities	819
Ranked #15 out of 65 in terms of net annual generation
Ranked #12 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 55.8% Nuclear \| 26% Water \| 5% Other Fuel \| 4.4% Wind \| 4% Solar \| 1.5% Coal \| 0.4%

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

Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Lewiston Junction Road Solar	NextGrid Peppertree, LLC	Poland, ME	7 GWh	Dec 2021	Dec 2024	Solar
Platt Hill	LSE Pictor LLC	Winchester, CT	2 GWh	Dec 2021	Dec 2024	Solar
Monument Valley	LSE Lepus LLC	Great Barrington, MA	3 GWh	Dec 2021	Dec 2024	Solar
ASD Wallum MA Solar LLC(CSG)	ASD Wallum MA Solar LLC	Douglas, MA	9 GWh	Dec 2021	Dec 2024	Solar
East Windsor Solar One	DG Connecticut III, LLC	East Windsor, CT	9 GWh	Nov 2021	Dec 2024	Solar
Green Providence Wind II, LLC	Green Providence Wind II, LLC	Providence, RI	4 GWh	Nov 2021	Dec 2024	Wind
Green Providence Wind I, LLC	Green Providence Wind I, LLC	Providence, RI	2 GWh	Nov 2021	Dec 2024	Wind
GDIM 4, LLC	GDIM 4, LLC	North Smithfield, RI	14 GWh	Nov 2021	Dec 2024	Solar
GDIM 3, LLC	GDIM 3, LLC	North Smithfield, RI	15 GWh	Nov 2021	Dec 2024	Solar
GDIM 2, LLC	GDIM 2, LLC	North Smithfield, RI	13 GWh	Nov 2021	Dec 2024	Solar
GDIM 1, LLC	GDIM 1, LLC	North Smithfield, RI	14 GWh	Nov 2021	Dec 2024	Solar
GD Johnson Scituate I, LLC	GD Johnson Scituate I, LLC	Cranston, RI	6 GWh	Nov 2021	Dec 2024	Solar
Unity Solar	Madison Energy Holdings LLC	Unity, ME	8 GWh	Nov 2021	Dec 2024	Solar
Hartland Solar	Madison Energy Holdings LLC	Hartland, ME	7 GWh	Nov 2021	Dec 2024	Solar
BWC Maces Pond LLC	Navisun LLC	Rockport, ME	5 GWh	Nov 2021	Dec 2024	Solar
299 Farm to Market Rd Hybrid(CSG)	299F2M WHAM8 Solar, LLC	Wareham, MA	6 GWh	Nov 2021	Dec 2024	Solar
160 Tihonet Rd Hybrid(CSG)	160TIH WHAM8 Solar, LLC	Wareham, MA	10 GWh	Nov 2021	Dec 2024	Solar
77 Farm to Market Rd Hybrid(CSG)	77F2M WHAM8 Solar, LLC	Wareham, MA	9 GWh	Nov 2021	Dec 2024	Solar
71 Charlotte Furnace Rd Hybrid(CSG)	71CFR WHAM8 Solar, LLC	Wareham, MA	2 GWh	Nov 2021	Dec 2024	Solar
Knapp West(CSG)	AES Distributed Energy	Akron, NY	7 GWh	Nov 2021	Dec 2024	Solar
Knapp East (CSG)	AES Distributed Energy	Akron, NY	7 GWh	Nov 2021	Dec 2024	Solar
Dusenberry	AES Distributed Energy	Troy, NY	8 GWh	Nov 2021	Dec 2024	Solar
Naples	Naples Casco Solar 1, LLC	Naples, ME	3 GWh	Nov 2021	Dec 2024	Solar
Acton	Acton H Road Solar 1, LLC	Acton, ME	5 GWh	Nov 2021	Dec 2024	Solar
Kearsarge William Way	Kearsarge William Way LLC	Bellingham, MA	7 GWh	Nov 2021	Dec 2024	Solar
Syncarpha Northbridge I Hybrid(CSG)	Syncarpha Northbridge I, LLC	Whitinsville, MA	9 GWh	Nov 2021	Dec 2024	Solar
Ryan Road Solar LLC Hybrid(CSG)	AES Distributed Energy	North Brookfield, MA	9 GWh	Nov 2021	Dec 2024	Solar
Town of Ware - Canadian Tree(CSG)	MA CS Ware West, LLC	Ware, MA	2 GWh	Nov 2021	Dec 2024	Solar
Quinebaug Solar	Quinebaug Solar, LLC	Canterbury, CT	81 GWh	Nov 2021	Sep 2025	Solar
CES Agawam Tuckahoe Solar Hybrid	CES Agawam Tuckahoe Solar LLC	Agawam, MA	7 GWh	Nov 2021	Dec 2024	Solar
Blacksmith Road Solar 1	Blacksmith Road Solar 1, LLC	Falmouth, MA	8 GWh	Nov 2021	Dec 2024	Solar
Electric Avenue Lunenburg Solar 1	Electric Avenue Lunenburg Solar 1, LLC	Lunenburg, MA	3 GWh	Nov 2021	Dec 2024	Solar
Harbor Road Solar 1	Harbor Road Solar 1, LLC	Cheshire, MA	3 GWh	Nov 2021	Dec 2024	Solar
Brimfield	WEB Brimfield Solar LLC	Brimfield, MA	3 GWh	Nov 2021	Dec 2024	Solar
WEB Brookfield	WEB Brookfield Solar LLC	Brookfield, MA	6 GWh	Nov 2021	Dec 2024	Solar
Marston Mills Solar	SoCore Energy LLC	Marstons Mills, MA	6 GWh	Nov 2021	Dec 2024	Solar
Sand Road	LSE Phoenix LLC	North Canaan, CT	4 GWh	Oct 2021	Dec 2024	Solar
RoxWind	RoxWind LLC	Roxbury, ME	36 GWh	Oct 2021	Dec 2024	Wind
196 Tremont St(CSG)	196TRE WHAM8 Solar, LLC	Carver, MA	4 GWh	Oct 2021	Dec 2024	Solar
59 Federal Rd(CSG)	59FED WHAM8 Solar, LLC	Carver, MA	11 GWh	Oct 2021	Dec 2024	Solar
276 Federal Rd(CSG)	276FED WHAM8 Solar, LLC	Carver, MA	10 GWh	Oct 2021	Dec 2024	Solar
ER Salvage Yard	Greenbacker Renewable Energy Corporation	Morrisville, VT	3 GWh	Oct 2021	Dec 2024	Solar
Billings Road	Greenbacker Renewable Energy Corporation	Hardwick, VT	2 GWh	Oct 2021	Dec 2024	Solar
Maple(CSG)	Maple Street Solar 1, LLC	Bellingham, MA	7 GWh	Oct 2021	Dec 2024	Solar
Rowe (CSG)	AES Distributed Energy	Olean, NY	8 GWh	Oct 2021	Dec 2024	Solar
Kearsarge Montague BD(CSG)	Kearsarge Montague BD LLC	Montague, MA	3 GWh	Oct 2021	Dec 2024	Solar
Golden Solar	Cardinal Renewables	St. Johnsbury, VT	4 GWh	Oct 2021	Dec 2024	Solar
McHenry Solar	Ecos Energy LLC	Hampton, CT	2 GWh	Sep 2021	Dec 2024	Solar
0 Hammond St CSG	0HAM WHAM8 Solar, LLC	Carver, MA	14 GWh	Sep 2021	Dec 2024	Solar
Farmington Solar	Farmington Solar, LLC	Farmington, ME	129 GWh	Sep 2021	Sep 2025	Solar
ZPD-PT Solar Project 2017-044 LLC CSG	AES Distributed Energy	Spencer, MA	1 GWh	Sep 2021	Dec 2024	Solar
Generate Colchester Fuel Cells, LLC	Generate Colchester Fuel Cells, LLC	Colchester, CT	77 GWh	Sep 2021	Dec 2024	Natural Gas
Emerald Gardens PKI, LLC	Emerald Gardens PKI, LLC	Shelton, CT	2 GWh	Sep 2021	Dec 2024	Solar
Lenox Renewables	Lenox Renewables, LLC	Canastota, NY	5 GWh	Aug 2021	Dec 2024	Solar
Falmouth 2 Solar	Citizens Enterprises Corporation	Falmouth, MA	3 GWh	Aug 2021	Dec 2024	Solar
Aegean Drive Solar	Aegean Drive Solar LLC	Methuen, MA	3 GWh	Aug 2021	Dec 2024	Solar
Apollo	Sunrise on Wing Ln. LLC	Acushnet, MA	2 GWh	Aug 2021	Dec 2024	Solar
Charlemont A	Charlemont MA, LLC	Charlemont, MA	4 GWh	Aug 2021	Nov 2024	Solar
Equinix - Billerica	Bloom Energy	Billerica, MA	15 GWh	Aug 2021	Dec 2024	Natural Gas
Williams Rd	AES Distributed Energy	Ransomville, NY	6 GWh	Aug 2021	Dec 2024	Solar
Fairhaven MA 2	Consolidated Edison Development Inc.	Fairhaven, MA	4 GWh	Aug 2021	Dec 2024	Solar
Fredonia Solar LLC	Greenbacker Renewable Energy Corporation	Fredonia, NY	2 GWh	Aug 2021	Dec 2024	Solar
Wallingford Solar	Wallingford Renewable Energy, LLC	Wallingford, CT	21 GWh	Aug 2021	Dec 2024	Solar
Lane Ave Solar LLC	AES Distributed Energy	North Brookfield, MA	2 GWh	Aug 2021	Dec 2024	Solar
W. Orange Rd Solar LLC	AES Distributed Energy	Orange, MA	8 GWh	Aug 2021	Dec 2024	Solar
Wilbur Woods Solar LLC	AES Distributed Energy	Orange, MA	8 GWh	Aug 2021	Dec 2024	Solar
BWC Muddy Brook, LLC Hybrid	AES Distributed Energy	Mendon, MA	2 GWh	Aug 2021	Dec 2024	Solar
Williamsville Hybrid CSG	147 Williamsville Solar 1, LLC	Hubbardston, MA	9 GWh	Aug 2021	Dec 2024	Solar
Brockelman Road Solar 2	Brockelman Road Solar 2, LLC	Lancaster, MA	2 GWh	Jul 2021	Dec 2024	Solar
MacKinnon Solar	Ecos Energy LLC	Rutland, VT	3 GWh	Jul 2021	Dec 2024	Solar
Fairhaven E	Fairhaven MA 1, LLC	Fairhaven, MA	3 GWh	Jul 2021	Dec 2024	Solar
Blodgett Solar CSG	Blodgett Street Solar 1, LLC	Tyngsboro, MA	10 GWh	Jul 2021	Dec 2024	Solar
ZPD-PT Solar Project 2017-006 LLC Hybrid	AES Distributed Energy	Warren, MA	5 GWh	Jun 2021	Dec 2024	Solar
BWC Stony Brook, LLC Hybrid	AES Distributed Energy	Chelmsford, MA	2 GWh	Jun 2021	Dec 2024	Solar
Granby Solar, LLC CSG	Granby Solar, LLC	Granby, MA	6 GWh	Jun 2021	Dec 2024	Solar
Randall Solar Project Hybrid	AES Distributed Energy	Berlin, MA	8 GWh	Jun 2021	Dec 2024	Solar
10 Briggs Solar NG, LLC (East)	NuGen Capital Management	East Greenwich, RI	7 GWh	May 2021	Dec 2024	Solar
Barrow Solar	Ecos Energy LLC	Somers, CT	3 GWh	May 2021	Dec 2024	Solar
Watertown Solar One, LLC	DG Connecticut III, LLC	Watertown, CT	3 GWh	May 2021	Dec 2024	Solar
Glenmere Lake	AES Distributed Energy	Goshen, NY	4 GWh	May 2021	Dec 2024	Solar
Syncarpha Leicester Hybrid CSG	Syncarpha Leicester, LLC	Leicester, MA	5 GWh	May 2021	Dec 2024	Solar
East Brookfield Adams Road Solar LLC CSG	East Brookfield Adams Road Solar LLC	East Brookfield, MA	7 GWh	May 2021	Dec 2023	Solar
Ware Palmer Road Solar LLC CSG	Ware Palmer Road Solar LLC	Ware, MA	5 GWh	May 2021	Dec 2024	Solar
Amaterasu LLC	AES Distributed Energy	Lancaster, MA	7 GWh	May 2021	Dec 2024	Solar
Oxford PV - BD Solar Oxford LLC	BD Solar Oxford LLC	Oxford, ME	15 GWh	May 2021	Dec 2024	Solar
Fairfield PV - BD Solar Fairfield LLC	BD Solar Fairfield LLC	Fairfield, ME	8 GWh	May 2021	Dec 2024	Solar
Augusta PV - BD Solar Augusta LLC	BD Solar Augusta LLC	Augusta, ME	10 GWh	May 2021	Dec 2024	Solar
Milo PV - BD Solar 1 LLC	BD Solar 1 LLC	Milo, ME	31 GWh	May 2021	Dec 2024	Solar
Nationwide	Nationwide Solar Energy LLC	Lancaster, MA	5 GWh	May 2021	Dec 2024	Solar
North Nobleboro Road, LLC	REA Investments, LLC	Waldoboro, ME	4 GWh	May 2021	Dec 2024	Solar
Perkins Road Belfast Solar, LLC	REA Investments, LLC	Belfast, ME	9 GWh	May 2021	Dec 2024	Solar
New Marlborough	Sunrise on Knight Rd. LLC	New Marlborough, MA	7 GWh	May 2021	Dec 2024	Solar
Clinton Solar	Ecos Energy LLC	Griswold, CT	2 GWh	Apr 2021	Dec 2024	Solar
Bristol Solar One, LLC	DG Connecticut III, LLC	Bristol, CT	5 GWh	Apr 2021	Dec 2024	Solar
BWC Lake Lashaway, LLC Hybrid	AES Distributed Energy	North Brookfield, MA	8 GWh	Apr 2021	Dec 2024	Solar
TES Rowtier	SkyHigh 2 Solar	Westminster, MA	5 GWh	Mar 2021	Dec 2024	Solar
Dunstable Solar 1, LLC	AES Distributed Energy	Dunstable, MA	11 GWh	Mar 2021	Dec 2024	Solar
Syncarpha Northbridge II Hybrid CSG	Syncarpha Northbridge II, LLC	Whitinsville, MA	8 GWh	Mar 2021	Dec 2024	Solar
ZPD-PT Solar Project 2017-038 Hybrid LLC	AES Distributed Energy	Lancaster, MA	7 GWh	Mar 2021	Dec 2024	Solar
Seaboard Sheffield, LLC	Navisun LLC	Sheffield, MA	2 GWh	Mar 2021	Dec 2024	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	696.7 GWh	4
#25	Dominion Energy South Carolina, Inc.	25.7 TWh	87
#13	Duke Energy Carolinas	112.5 TWh	565
#17	Duke Energy Progress East	64.3 TWh	559
#52	Duke Energy Progress West	4.3 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.4 TWh	25
#12	New York Independent System Operator	131.6 TWh	1,211
#1	PJM Interconnection, LLC	870.7 TWh	2,465
#30	South Carolina Public Service Authority	18.9 TWh	34
#59	Southeastern Power Administration	1.5 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#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
#17	Duke Energy Progress East	64.3 TWh	559
#18	PacifiCorp East	61.1 TWh	216
#19	Salt River Project Agricultural Improvement and Power District	60.0 TWh	48