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
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
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
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
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
UMass PV Lot 22	RWE Clean Energy	Amherst, MA	3 GWh	Aug 2022	Dec 2025	Solar
ER Center Road Solar, LLC	Altus Power America Management, LLC	Hardwick, VT	3 GWh	Apr 2022	Dec 2025	Solar
Cranberry Highway Solar LLC	Cranberry Highway Solar, LLC	Wareham, MA	3 GWh	Feb 2021	Dec 2025	Solar
Norton LLC	Greenbacker Renewable Energy Corporation	Norton, MA	1 GWh	Aug 2020	Dec 2025	Solar
Holliston LLC	Greenbacker Renewable Energy Corporation	Holliston, MA	2 GWh	Sep 2020	Dec 2025	Solar
Medtronic - New Haven 2	Bloom Energy	North Haven, CT	17 GWh	Sep 2020	Dec 2025	Natural Gas
Medtronic - New Haven	Bloom Energy	North Haven, CT	18 GWh	Sep 2020	Dec 2025	Natural Gas
Equinix - Billerica	Bloom Energy	Billerica, MA	14 GWh	Aug 2021	Dec 2025	Natural Gas
Woburn	Greenbacker Renewable Energy Corporation	Woburn, MA	2 GWh	Nov 2020	Dec 2025	Solar
Charlemont A	Agilitas Energy, Inc.	Charlemont, MA	3 GWh	Aug 2021	Dec 2025	Solar
Fairhaven E	Agilitas Energy, Inc.	Fairhaven, MA	3 GWh	Jul 2021	Dec 2025	Solar
Barrow Solar	Ecos Energy LLC	Somers, CT	3 GWh	May 2021	Dec 2025	Solar
Indian River Hydro	Eagle Creek Renewable Energy, LLC	Russell, MA	2 GWh	Nov 1909	Dec 2025	Water
Gorham Solar 1 (CSG)	CleanCapital Holdings	Gorham, ME	7 GWh	Oct 2023	Dec 2025	Solar
MacKinnon Solar	Ecos Energy LLC	Rutland, VT	3 GWh	Jul 2021	Dec 2025	Solar
McHenry Solar	Ecos Energy LLC	Hampton, CT	2 GWh	Sep 2021	Dec 2025	Solar
MA CS Uxbridge Community Solar	MA CS Uxbridge, LLC	Uxbridge, MA	7 GWh	Jan 2023	Dec 2025	Solar
BWC Maces Pond LLC	Navisun LLC	Rockport, ME	4 GWh	Nov 2021	Dec 2025	Solar
Howard Lane Solar	NJR Clean Energy Ventures Corporation	Glocester, RI	2 GWh	Aug 2023	Dec 2025	Solar
Hartland Solar	Madison Energy Holdings LLC	Hartland, ME	7 GWh	Nov 2021	Dec 2025	Solar
Unity Solar	Madison Energy Holdings LLC	Unity, ME	7 GWh	Nov 2021	Dec 2025	Solar
GD Johnson Scituate I, LLC	GD Johnson Scituate I, LLC	Cranston, RI	6 GWh	Nov 2021	Dec 2025	Solar
GDIM 1, LLC	GDIM 1, LLC	North Smithfield, RI	15 GWh	Nov 2021	Dec 2025	Solar
GDIM 2, LLC	GDIM 2, LLC	North Smithfield, RI	13 GWh	Nov 2021	Dec 2025	Solar
GDIM 3, LLC	GDIM 3, LLC	North Smithfield, RI	15 GWh	Nov 2021	Dec 2025	Solar
GDIM 4, LLC	GDIM 4, LLC	North Smithfield, RI	14 GWh	Nov 2021	Dec 2025	Solar
Green Providence Wind I, LLC	Green Providence Wind I, LLC	Providence, RI	2 GWh	Nov 2021	Dec 2025	Wind
Green Providence Wind II, LLC	Green Providence Wind II, LLC	Providence, RI	5 GWh	Nov 2021	Dec 2025	Wind
Baldwin (ME)	Maine DG Solar Baldwin, LLC	West Baldwin, ME	10 GWh	Feb 2022	Dec 2025	Solar
Augusta	Maine DG Solar Augusta, LLC	Augusta, ME	5 GWh	Feb 2022	Dec 2025	Solar
Monmouth	Maine DG Solar Monmouth, LLC	Monmouth, ME	9 GWh	Feb 2022	Dec 2025	Solar
Whatley Renewables	Whatley Renewables, LLC	Whatley, MA	2 GWh	Sep 2020	Dec 2025	Solar
Wachusett Solar	Wachusett Solar, LLC	Rutland, MA	3 GWh	Jul 2019	Dec 2025	Solar
ER Sand Hill	Altus Power America Management, LLC	Castleton, VT	3 GWh	Oct 2022	Dec 2025	Solar
Dartmouth Farms Solar	Dartmouth Farms Solar, LLC	Dartmouth, MA	4 GWh	Oct 2017	Dec 2025	Solar
Foster Solar	Foster Solar, LLC	North Scituate, RI	2 GWh	Jul 2016	Dec 2025	Solar
MA-Dighton-A	MA CS Dighton, LLC	Dighton, MA	6 GWh	May 2024	Dec 2025	Solar
Brockelman Road Solar 2	Brockelman Road Solar 2, LLC	Lancaster, MA	2 GWh	Jul 2021	Dec 2025	Solar
TES Rowtier	SkyHigh 2 Solar	Westminster, MA	10 GWh	Mar 2021	Dec 2025	Solar
Southington Solar One	DG Connecticut III, LLC	Southington, CT	9 GWh	Jan 2022	Dec 2025	Solar
Kearsarge Ludlow LLC	Kearsarge Ludlow LLC	Ludlow, MA	6 GWh	Nov 2020	Dec 2025	Solar
Kearsarge Acushnet	Kearsarge Acushnet LLC	Acushnet, MA	3 GWh	Jan 2020	Dec 2025	Solar
Long Plain Solar	Long Plain Solar, LLC	Whatley, MA	4 GWh	Nov 2019	Dec 2025	Solar
Settlers Solar	Settlers Solar, LLC	Lunenberg, MA	7 GWh	Nov 2020	Dec 2025	Solar
Griffin Road Solar 2	Griffin Road Solar 2, LLC	Charlton, MA	2 GWh	May 2020	Dec 2025	Solar
Woodland Avenue Solar 1	Woodland Avenue Solar 1, LLC	Seekonk, MA	9 GWh	Jul 2020	Dec 2025	Solar
RT405 Westerlo Solar 2	RT405 Westerlo Solar 2, LLC	Albany, NY	8 GWh	Feb 2020	Dec 2025	Solar
Webster Solar	Webster Solar, LLC	Webster, MA	1 GWh	Nov 2017	Dec 2025	Solar
LR Wheatfield Solar 1	LR Wheatfield Solar 1, LLC	Wheatfield, NY	8 GWh	Sep 2020	Dec 2025	Solar
Pendleton Solar 1	Pendleton Solar 1, LLC	Lockport, NY	7 GWh	Sep 2020	Dec 2025	Solar
Centech Gas Generator	Town of Shrewsbury - (MA)	Shrewsbury, MA	428 MWh	Mar 2019	Dec 2025	Natural Gas
Cream Street Solar	Cream Street Solar, LLC	Hyde Park, NY	4 GWh	Nov 2020	Dec 2025	Solar
Little Falls Solar	Little Falls Solar	Little Falls, NY	3 GWh	Sep 2020	Dec 2025	Solar
Little Falls Solar 1	Little Falls Solar 1, LLC	Little Falls, NY	3 GWh	Aug 2020	Dec 2025	Solar
Burlington Solar 1	DG Connecticut III, LLC	Burlington, CT	6 GWh	Jan 2022	Dec 2025	Solar
1639 RT 29 Solar 1	1639 RT 29 Solar 1, LLC	Gloversville, NY	7 GWh	Nov 2020	Dec 2025	Solar
1639 RT 29 Solar 2	1639 RT 29 Solar 2, LLC	Gloversville, NY	4 GWh	Nov 2020	Dec 2025	Solar
Easton CSG 1 LLC	Easton CSG 1 LLC	Easton, ME	6 GWh	Jan 2024	Dec 2025	Solar
Limestone CSG 1 LLC	Limestone CSG 1 LLC	Limestone, ME	6 GWh	Nov 2024	Dec 2025	Solar
Limestone CSG 2 LLC	Limestone CSG 2 LLC	Limestone, ME	5 GWh	Oct 2024	Dec 2025	Solar
Dynamic Corinth (CSG)	MN8 Energy LLC	Corinth, ME	10 GWh	Sep 2022	Dec 2025	Solar
Dynamic Madison (CSG)	MN8 Energy LLC	Madison, ME	10 GWh	Jul 2022	Dec 2025	Solar
Kearsarge Smithfield LLC	Kearsarge Smithfield LLC	Burrillville, RI	14 GWh	Mar 2023	Dec 2025	Solar
Kearsarge 100 Sohier Rd	Kearsarge Beverly LLC	Beverly, MA	3 GWh	Apr 2023	Dec 2025	Solar
Kearsarge West Shore Solar LLC	Kearsarge West Shore Solar LLC	Portsmouth, RI	9 GWh	Nov 2022	Dec 2025	Solar
Harmony Solar (ME)	Maine DG Solar Harmony, LLC	Harmony, ME	9 GWh	Jul 2022	Dec 2025	Solar
Norton Powerhouse 2	Norton Powerhouse 2	Worcester, MA	29 GWh	Oct 2022	Dec 2025	Natural Gas
Sugar Hill Solar 1	Sugar Hill Solar 1, LLC	Clifton Park, NY	8 GWh	Nov 2020	Dec 2025	Solar
3104 Batavia Solar	3104 Batavia Solar, LLC	Batavia, NY	5 GWh	Feb 2021	Dec 2025	Solar
3232 Batavia Solar	3232 Batavia Solar, LLC	Batavia, NY	7 GWh	Feb 2021	Dec 2025	Solar
Niagara Depot Solar	Niagara Depot Solar, LLC	Niagara Falls, NY	5 GWh	Jun 2023	Dec 2025	Solar
Arctaris Saddleback Solar	Arctaris Saddleback Solar, LLC	Dallas Plantation, ME	7 GWh	Oct 2023	Dec 2025	Solar
TPE RI WA2 Solar	TPE RI WA2, LLC	Warren, RI	6 GWh	May 2024	Dec 2025	Solar
TPE RI WA1 Solar	TPE RI WA1, LLC	Warren, RI	6 GWh	May 2024	Dec 2025	Solar
Generate Colchester Fuel Cells, LLC	Generate Colchester Fuel Cells, LLC	Colchester, CT	72 GWh	Sep 2021	Dec 2025	Natural Gas
Marlborough Solar	Marlborough Solar, LLC	Milton, NY	3 GWh	Feb 2021	Dec 2025	Solar
Blacksmith Road Solar 1	Blacksmith Road Solar 1, LLC	Falmouth, MA	9 GWh	Nov 2021	Dec 2025	Solar
Electric Avenue Lunenburg Solar 1	Electric Avenue Lunenburg Solar 1, LLC	Lunenburg, MA	2 GWh	Nov 2021	Dec 2025	Solar
Harbor Road Solar 1	Harbor Road Solar 1, LLC	Cheshire, MA	3 GWh	Nov 2021	Dec 2025	Solar
Lenox Renewables	Lenox Renewables, LLC	Canastota, NY	6 GWh	Aug 2021	Dec 2025	Solar
Milo CSG	Milo CSG, LLC	Milo, ME	7 GWh	Jan 2022	Dec 2025	Solar
Livermore Falls CSG	Livermore Falls CSG, LLC	Livermore Falls, ME	4 GWh	Apr 2022	Dec 2025	Solar
Water Street Solar	AES Distributed Energy	Randolph, ME	7 GWh	Nov 2022	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