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	Mar 2026
Annual Generation	110.5 TWh
Power Plants	1,577
Utilities	819
Ranked #15 out of 65 in terms of net annual generation
Ranked #11 out of 54 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 55.9% Nuclear \| 25.1% Water \| 4.6% Other Fuel \| 4.3% Wind \| 4.3% Solar \| 1.4% 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
Sheldon Springs Hydroelectric	Central Rivers Power US, LLC	Sheldon Springs, VT	68 GWh	Jun 1988	Dec 2024	Water
Sheldon Solar	Excelsior Energy Capital	Sheldon Springs, VT	3 GWh	Aug 2013	Dec 2024	Solar
Limerick Road Solar Farm	Limerick Road Solar, LLC	Shelburne, VT	3 GWh	Nov 2013	Dec 2024	Solar
Sheffield Wind	Evergreen Wind, LLC	Sheffield, VT	68 GWh	Sep 2011	Dec 2025	Wind
Berkshire 1	PPS Berkshire Solar LLC	Sheffield, MA	2 GWh	Nov 2011	Dec 2024	Solar
Seaboard Sheffield, LLC	Navisun LLC	Sheffield, MA	2 GWh	Mar 2021	Dec 2024	Solar
Shawmut	Brookfield White Pine Hydro LLC	Shawmut, ME	17 GWh	Dec 1912	Dec 2024	Water
SunGen Sharon 1 LLC	SunGen Sharon 1 LLC	Sharon, VT	3 GWh	Jul 2012	Dec 2024	Solar
1 Commercial	Madison Energy Investments LLC	Sharon, MA	770 MWh	Aug 2023	Dec 2024	Solar
Woodland Avenue Solar 1	Woodland Avenue Solar 1, LLC	Seekonk, MA	8 GWh	Jul 2020	Dec 2024	Solar
Caterpillar Hill	AES Clean Energy	Sedgwick, ME	9 GWh	Nov 2023	Dec 2024	Solar
Georges River Energy	Robbins Lumber Inc	Searsmont, ME	52 GWh	Nov 2018	Dec 2024	Wood/Wood Waste Solids
Robbins Lumber	Robbins Lumber Inc	Searsmont, ME	97 MWh	Dec 1980	Dec 2023	Distillate Fuel Oil
Searsburg Wind Turbine	Green Mountain Power Corp	Searsburg, VT	11 GWh	May 1997	Dec 2025	Wind
Searsburg	Great River Hydro, LLC	Searsburg, VT	15 GWh	Feb 1922	Dec 2024	Water
Deerfield Wind LLC	Avangrid Power LLC	Searsburg, VT	96 GWh	Nov 2017	Dec 2025	Wind
Seabrook	NextEra Energy Seabrook LLC	Seabrook, NH	11 TWh	Jul 1990	Dec 2025	Nuclear
Scituate Wind	Scituate Wind LLC	Scituate, MA	2 GWh	Feb 2012	Dec 2024	Wind
Scituate PV	AES Distributed Energy	Scituate, MA	3 GWh	Sep 2013	Dec 2024	Solar
BWC Beech Ridge Brook, LLC	Navisun LLC	Scarborough, ME	8 GWh	Apr 2023	Dec 2024	Solar
Savoy Solar PV	NSTAR Electric Company	Savoy, MA	3 GWh	Jan 2019	Dec 2024	Solar
Wheelabrator Saugus	Wheelabrator Environmental Systems	Saugus, MA	185 GWh	Jul 1985	Dec 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
515 Main Saugus	515 Main Saugus LLC	Saugus, MA	2 GWh	Aug 2017	Dec 2024	Solar
Sanford Solar	Sanford Airport Solar, LLC	Sanford, ME	86 GWh	Oct 2020	Dec 2025	Solar
Sanford CGA	Nautilus Solar Solutions	Sanford, ME	230 MWh	May 2022	Dec 2024	Solar
Sanford -NY	Nautilus Solar Solutions	Sanford, ME	7 GWh	Jan 2024	Dec 2024	Solar
Sandwich	LSE Ophiuchus LLC	Sandwich, MA	5 GWh	Jun 2023	Dec 2024	Solar
ASD Cotuit MA Solar LLC	ASD Cotuit MA Solar LLC	Sandwich, MA	2 GWh	Oct 2023	Dec 2024	Solar
Green Meadows	Altus Power America Management, LLC	Sandwich, MA	5 GWh	Apr 2014	Dec 2024	Solar
Canal	Canal Generating LLC	Sandwich, MA	374 GWh	May 1968	Dec 2025	Natural Gas : 49.1% Residual Fuel Oil : 47.3% Distillate Fuel Oil : 3.6%
Renew Canal 1 CSG LLC	NRG Renew Canal 1 LLC	Sandwich, MA	2 GWh	May 2017	Dec 2024	Solar
Salisbury	Green Mountain Power Corp	Salisbury, VT	2 GWh	Jan 1917	Dec 2024	Water
Silver Lake (VT)	Green Mountain Power Corp	Salisbury, VT	5 GWh	Jan 1917	Dec 2024	Water
True North	CD US Solar MT1 LLC	Salisbury, MA	6 GWh	Jul 2012	Dec 2024	Solar
Salem Harbor Power Development LP	Salem Harbor Power Development LP	Salem, MA	2 TWh	Apr 2018	Dec 2025	Natural Gas
Cape Cod Air Force Station - 6 SWS	US Air Force	Sagamore, MA	7 GWh	Dec 2013	Dec 2025	Wind
Cataract Hydro	Brookfield White Pine Hydro LLC	Saco, ME	28 GWh	Dec 1936	Dec 2024	Water
Sabattus SB01	Nautilus Solar Solutions	Sabattus, ME	8 GWh	Sep 2023	Dec 2024	Solar
Park St	Greenbacker Renewable Energy Corporation	Rutland, VT	2 GWh	Nov 2014	Dec 2024	Solar
MacKinnon Solar	Ecos Energy LLC	Rutland, VT	3 GWh	Jul 2021	Dec 2024	Solar
Gray Solar	Ecos Energy LLC	Rutland, VT	3 GWh	Jul 2023	Dec 2024	Solar
Glen	Green Mountain Power Corp	Rutland, VT	6 GWh	Jul 1920	Dec 2024	Water
Main Street Solar Project	Greenbacker Renewable Energy Corporation	Rutland, VT	2 GWh	Nov 2014	Dec 2024	Solar
Stafford Hill Solar Hybrid	Green Mountain Power Corp	Rutland, VT	566 MWh	Feb 2015	Dec 2025	Solar
Pleasantdale Road Community Solar	Pleasantdale Road Solar, LLC	Rutland, MA	1 GWh	Aug 2017	Dec 2024	Solar
Golden Hills Solar	Golden Hills Solar, LLC	Rutland, MA	8 GWh	Aug 2017	Dec 2024	Solar
Upper Blackstone (MA) Treasure Valley	Nexamp Treasure Valley Solar, LLC	Rutland, MA	7 GWh	Jun 2014	Dec 2024	Solar
RGS-Rutland VNM SREC II Project (MA)	TerraForm Solar XVII, LLC	Rutland, MA	2 GWh	Oct 2015	Dec 2024	Solar
Wachusett Solar	Wachusett Solar, LLC	Rutland, MA	4 GWh	Jul 2019	Dec 2024	Solar
Rutland	Green Mountain Power Corp	Rutland City, VT	84 MWh	Nov 1962	Mar 2024	Distillate Fuel Oil
Texon Hydroelectric Project	Hitchcock Hydro, LLC	Russell, MA	4 GWh	Dec 1981	Dec 2024	Water
Indian River Hydro	Eagle Creek Renewable Energy, LLC	Russell, MA	1 GWh	Nov 1909	Dec 2024	Water
Holiday Hill Community Wind	Greenbacker Renewable Energy Corporation	Russell, MA	10 GWh	Nov 2019	Dec 2024	Wind
Russell (MA)	Sunrise on Blandford Rd. LLC	Russell, MA	5 GWh	Oct 2020	Dec 2024	Solar
Mainely Solar (Wyman Hill Solar LLC)	Wyman Hill Solar, LLC	Rumford, ME	5 GWh	Nov 2022	Dec 2024	Solar
Rumford Cogeneration	ND Paper, Inc.	Rumford, ME	424 GWh	Dec 1989	Dec 2025	Black Liquor : 51.6% Tire-derived Fuels : 22.3% Wood/Wood Waste Solids : 15.8% Bituminous Coal : 7.5% Residual Fuel Oil : 2.0% Sludge Waste : 0.8%
Rumford Power LLC	Rumford Power	Rumford, ME	638 GWh	Jun 2000	Dec 2024	Natural Gas
Rumford Falls Hydro Facility	Brookfield Power New England	Rumford, ME	261 GWh	Dec 1917	Dec 2024	Water
Record Hill Wind	Record Hill Wind LLC	Roxbury, ME	115 GWh	Dec 2011	Dec 2024	Wind
RoxWind	RoxWind LLC	Roxbury, ME	36 GWh	Oct 2021	Dec 2024	Wind
Sherman	Great River Hydro, LLC	Rowe, MA	27 GWh	Nov 1926	Dec 2024	Water
700 Binnewater	Madison Energy Investments LLC	Rosendale, NY	2 GWh	Aug 2022	Dec 2024	Solar
Rollinsford	Green Mountain Power Corp	Rollinsford, NH	2 GWh	Sep 1986	Dec 2024	Water
Town of Rocky Hill PV CSG	Tesla Inc.	Rocky Hill, CT	5 GWh	Feb 2018	Dec 2024	Solar
Brassua Hydroelectric Project	Brassua Hydroelectric LP	Rockwood, ME	10 GWh	Aug 1989	Dec 2024	Water
BWC Maces Pond LLC	Navisun LLC	Rockport, ME	5 GWh	Nov 2021	Dec 2024	Solar
Samoset Solar	Samoset Solar, LLC	Rockport, ME	4 GWh	Jun 2023	Dec 2024	Solar
Rockland Solar CSG	MN8 Energy LLC	Rockland, MA	2 GWh	Nov 2013	Dec 2024	Solar
Saratoga Solar IV, LLC	Green Street Power Partners	Rock City Falls, NY	4 GWh	Sep 2023	Dec 2024	Solar
Turnkey Landfill Gas Recovery	WM Renewable Energy LLC	Rochester, NH	44 GWh	Jan 1992	Dec 2024	Landfill Gas
Quittacas Pond Solar	Consolidated Edison Solutions Inc.	Rochester, MA	5 GWh	Nov 2013	Dec 2024	Solar
Old Middleboro Road Solar	Agilitas Energy, Inc.	Rochester, MA	11 GWh	Dec 2022	Dec 2024	Solar
Rochester MA 2	Rochester MA 2 LLC	Rochester, MA	2 GWh	Nov 2018	Dec 2024	Solar
Rounseville Solar	Rounseville Solar 1, LLC	Rochester, MA	4 GWh	Jan 2020	Dec 2024	Solar
GMP Solar - Richmond	Green Mountain Power Corp	Richmond, VT	3 GWh	Sep 2016	Dec 2025	Solar
WED Stilson Solar	CleanCapital Holdings	Richmond, RI	3 GWh	Nov 2017	Dec 2024	Solar
WED Kingstown Solar I, LLC - West	CleanCapital Holdings	Richmond, RI	2 GWh	Nov 2017	Dec 2024	Solar
GD Richmond Buttonwoods I, LLC	GD Richmond Buttonwoods I, LLC	Richmond, RI	2 GWh	Nov 2019	Dec 2024	Solar
Richmond Hill	Greenbacker Renewable Energy Corporation	Richmond, ME	3 GWh	Nov 2023	Dec 2024	Solar
Rehoboth Solar	Citizens Enterprises Corporation	Rehoboth, MA	3 GWh	Nov 2013	Dec 2024	Solar
BWC Swan Pond River CSG	BWC Swan Pond River, LLC	Rehoboth, MA	3 GWh	Nov 2015	Dec 2024	Solar
GSPP Raynham TMLP, LLC CSG	Green Street Power Partners	Raynham, MA	4 GWh	Jan 2019	Dec 2024	Solar
Williams Rd	AES Distributed Energy	Ransomville, NY	6 GWh	Aug 2021	Dec 2024	Solar
Randolph	Altus Power America Management, LLC	Randolph, MA	6 GWh	Oct 2017	Dec 2024	Solar
Water Street Solar	AES Distributed Energy	Randolph, ME	7 GWh	Nov 2022	Dec 2024	Solar
Boston Scientific Solar	Consolidated Edison Solutions Inc.	Quincy, MA	2 GWh	Nov 2012	Dec 2024	Solar
Thundermist Hydro	City of Woonsocket	Providence, RI	90 MWh	May 1981	Dec 2024	Water
NBC Field's Point Wind Farm	Narragansett Bay Commission	Providence, RI	7 GWh	Sep 2012	Dec 2025	Wind
Little Bay	Altus Power America Management, LLC	Providence, RI	2 GWh	Feb 2014	Dec 2024	Solar
Manchester Street	Manchester Street, LLC.	Providence, RI	2 TWh	Aug 1995	Dec 2025	Natural Gas : 96.7% Distillate Fuel Oil : 3.3%
Rhode Island Hospital	Rhode Island Hospital	Providence, RI	40 GWh	Sep 1974	Dec 2025	Natural Gas : 97.2% Residual Fuel Oil : 2.8%
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
Proctor	Green Mountain Power Corp	Proctor, VT	31 GWh	Jul 1905	Dec 2024	Water
Princeton Wind Farm	Town of Princeton - (MA)	Princeton, MA	4 GWh	Dec 2009	Dec 2024	Wind
Tunnel	FirstLight Power Resources Services LLC	Preston, CT	8 GWh	Dec 1918	Dec 2024	Water
Covanta Southeastern Connecticut Company	Covanta Southeastern Connecticut Company	Preston, CT	116 GWh	Nov 1991	Dec 2025	Non-biogenic Municipal Solid Waste : 54.1% Biogenic Municipal Solid Waste : 44.3% Distillate Fuel Oil : 1.7%
Mechanic Street (CSG)	Nautilus Solar Solutions	Presque Island, ME	3 MWh	Nov 2024	Dec 2024	Solar
Missile Street (CSG)	Nautilus Solar Solutions	Presque Island, ME	4 MWh	Nov 2024	Dec 2024	Solar
SVEP Solar Project Company	CVI CleanCapital Solar 1 LLC	Pownal, VT	2 GWh	Nov 2012	Dec 2024	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#60	Alcoa Power Generating, Inc. - Yadkin Division	610.0 GWh	4
#25	Dominion Energy South Carolina, Inc.	25.6 TWh	87
#13	Duke Energy Carolinas	112.4 TWh	565
#17	Duke Energy Progress East	64.5 TWh	559
#52	Duke Energy Progress West	4.3 TWh	10
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.3 TWh	25
#12	New York Independent System Operator	134.0 TWh	1,211
#1	PJM Interconnection, LLC	879.0 TWh	2,465
#29	South Carolina Public Service Authority	18.4 TWh	34
#59	Southeastern Power Administration	1.4 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	179.9 TWh	2,075
#9	Tennessee Valley Authority	162.4 TWh	204
#10	Florida Power & Light Co.	150.5 TWh	187
#12	New York Independent System Operator	134.0 TWh	1,211
#13	Duke Energy Carolinas	112.4 TWh	565
#15	ISO New England	110.5 TWh	1,577
#16	Bonneville Power Administration	85.9 TWh	163
#17	Duke Energy Progress East	64.5 TWh	559
#18	PacifiCorp East	60.9 TWh	216
#19	Salt River Project Agricultural Improvement and Power District	60.3 TWh	48