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
Gregg Falls	Eagle Creek Renewable Energy, LLC	Goffstown, NH	8 GWh	Nov 1985	Dec 2025	Water
Newfound Hydroelectric	Eagle Creek Renewable Energy, LLC	Bristol, NH	4 GWh	Nov 1983	Dec 2025	Water
Pembroke Hydro	Eagle Creek Renewable Energy, LLC	Suncook, NH	7 GWh	Nov 1985	Dec 2025	Water
Worumbo Hydro Station	Eagle Creek Renewable Energy, LLC	Lisbon Falls, ME	74 GWh	Jan 1989	Dec 2025	Water
International Paper Woronoco Mill	Eagle Creek Renewable Energy, LLC	Woronoco, MA	7 GWh	Dec 1912	Dec 2025	Water
International Paper Riley Hydro	Eagle Creek Renewable Energy, LLC	Jay, ME	20 GWh	Nov 1981	Dec 2025	Water
Otis Hydro	Eagle Creek Renewable Energy, LLC	Livermore Falls, ME	38 GWh	Dec 1984	May 2026	Water
Stevens Mills Dam	Eagle Creek Renewable Energy, LLC	Franklin, NH	4 GWh	May 1982	Dec 2025	Water
Anson Abenaki Hydros	Eagle Creek Renewable Energy, LLC	Madison, ME	101 GWh	Dec 1949	Dec 2025	Water
Clement Dam Hydro LLC	Eagle Creek Renewable Energy, LLC	Tilton, NH	7 GWh	Nov 1984	Oct 2025	Water
Pepperell Hydro Power Plant	Eagle Creek Renewable Energy, LLC	Pepperell, MA	2 GWh	Dec 1919	May 2026	Water
International Paper Jay Hydro	Eagle Creek Renewable Energy, LLC	Jay, ME	12 GWh	Dec 1911	Dec 2025	Water
Brookfield Wire Company	Dynamic Energy Solutions, LLC	Brookfield, MA	2 GWh	May 2016	Dec 2025	Solar
DWW Solar ll	DWW Solar ll LLC	Simsbury, CT	46 GWh	Nov 2019	May 2026	Solar
Cellu Tissue	Dunn Paper East Hartford, LLC	East Hartford, CT	12 GWh	Apr 2009	May 2026	Natural Gas
Dudley Solar CSG	Dudley Solar, LLC	Dudley, MA	3 GWh	Jul 2017	Dec 2025	Solar
Dudley Landfill Solar LLC	Dudley Landfill Solar LLC	Dudley, MA	1 GWh	Apr 2025	Dec 2025	Solar
Dresser Hill CSG	Dresser Hill Solar, LLC	Southbridge, MA	6 GWh	Dec 2020	Dec 2025	Solar
Downing Parkway Solar	Downing Parkway Solar LLC	Pittsfield, MA	3 GWh	Jun 2015	Dec 2025	Solar
Downeast Wind	Downeast Wind, LLC	Columbia, ME	364 GWh	Dec 2024	May 2026	Wind
Millstone	Dominion Energy Nuclear Conn Inc	Waterford, CT	17 TWh	Nov 1975	May 2026	Nuclear
Dodge Falls Associates	Dodge Falls Associates LP	Bath, NH	22 GWh	Nov 1990	Dec 2025	Water
Lebanon CSG LLC	Dimension Energy LLC	Lebanon, ME	6 GWh	Nov 2024	Dec 2025	Solar
Dighton Power Plant	Dighton Power, LLC	Dighton, MA	276 GWh	Apr 1999	Dec 2025	Natural Gas
DG Webster LLC CSG	DG Webster, LLC	Webster, MA	2 GWh	Nov 2017	Dec 2025	Solar
DG Tufts Science LLC CSG	DG Tufts Science, LLC	North Grafton, MA	1 GWh	Jan 2017	Dec 2025	Solar
DG Tufts Knoll LLC CSG	DG Tufts Knoll, LLC	North Grafton, MA	3 GWh	Jul 2017	Dec 2025	Solar
DG Haverhill CSG	DG Haverhill LLC	Haverhill, MA	7 GWh	Aug 2017	Dec 2025	Solar
DG Foxborough Elm CSG	DG Foxborough Elm LLC	Foxborough, MA	3 GWh	Jul 2017	Dec 2025	Solar
DG Dighton LLC CSG	DG Dighton, LLC	Dighton, MA	5 GWh	Jun 2017	Dec 2025	Solar
DG Crystal Spring CSG	DG Crystal Spring LLC	Mattapoisett, MA	7 GWh	Jun 2017	Dec 2025	Solar
Watertown Solar One, LLC	DG Connecticut III, LLC	Watertown, CT	3 GWh	May 2021	Dec 2025	Solar
East Windsor Solar One	DG Connecticut III, LLC	East Windsor, CT	6 GWh	Nov 2021	Sep 2025	Solar
Bristol Solar One, LLC	DG Connecticut III, LLC	Bristol, CT	5 GWh	Apr 2021	Dec 2025	Solar
Torrington Solar One, LLC	DG Connecticut III, LLC	Torrington, CT	3 GWh	Feb 2021	Dec 2025	Solar
Burlington Solar 1	DG Connecticut III, LLC	Burlington, CT	6 GWh	Jan 2022	Dec 2025	Solar
Southington Solar One	DG Connecticut III, LLC	Southington, CT	9 GWh	Jan 2022	Dec 2025	Solar
Derby Fuel Cell	Derby Fuel Cell LLC	Derby, CT	110 GWh	Dec 2023	Dec 2025	Natural Gas
Dept of Corrections NCCI Wind	Dept of Corrections NCCI Wind	Gardner, MA	2 GWh	Oct 2013	May 2026	Wind
Block Island Wind Farm	Deepwater Wind Block Island LLC	NA, RI	83 GWh	Nov 2016	May 2026	Wind
Dartmouth Farms Solar	Dartmouth Farms Solar, LLC	Dartmouth, MA	4 GWh	Oct 2017	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%
Dartmouth College Heating Plant	Dartmouth College	Hanover, NH	11 GWh	Dec 1969	May 2026	Residual Fuel Oil
Danton XI Solar LLC	Danton XI Solar LLC	Methuen, MA	2 GWh	Dec 2013	Dec 2025	Solar
Danbury Hospital Cogen Plant	Danbury Hospital	Danbury, CT	22 GWh	Oct 2011	Dec 2025	Natural Gas
Saint Albans Solar	Cypress Creek Renewables	Georgia, VT	7 GWh	Sep 2018	Dec 2025	Solar
Next Generation Solar Farm	Cypress Creek Renewables	New Haven, VT	4 GWh	Nov 2017	Dec 2025	Solar
West Brookfield Solar, LLC	CVI CleanCapital Solar 7	West Brookfield, MA	2 GWh	Dec 2015	Dec 2025	Solar
Oxford	CVI CleanCapital Solar 6	Oxford, MA	3 GWh	Jun 2014	Dec 2025	Solar
Morin Solar 2013 LLC	CVI CleanCapital Solar 6	Warren, MA	5 GWh	Nov 2013	Dec 2025	Solar
Brookfield Solar 2013 LLC	CVI CleanCapital Solar 6	North Brookfield, MA	3 GWh	Nov 2013	Dec 2025	Solar
WYM 1250 Palmer LLC	CVI CleanCapital Solar 6	Palmer, MA	1 GWh	Aug 2013	Dec 2025	Solar
Williamstown Solar	CVI CleanCapital Solar 1 LLC	Williamstown, VT	2 GWh	Nov 2012	Dec 2025	Solar
SVEP Solar Project Company	CVI CleanCapital Solar 1 LLC	Pownal, VT	2 GWh	Nov 2012	Dec 2025	Solar
Leicester One MA Solar LLC	CVI CleanCapital Solar 1 LLC	Leicester, MA	5 GWh	Dec 2014	Dec 2025	Solar
State Street Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2025	Solar
Browne Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2025	Solar
Indian Hill Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2025	Solar
Open View Solar Farm	Cross Pollination Inc	New Haven, VT	3 GWh	Aug 2013	Dec 2025	Solar
Cream Street Solar	Cream Street Solar, LLC	Hyde Park, NY	4 GWh	Nov 2020	Dec 2025	Solar
Cranberry Highway Solar LLC	Cranberry Highway Solar, LLC	Wareham, MA	3 GWh	Feb 2021	Dec 2025	Solar
CPV Towantic Energy Center	CPV Towantic, LLC	Oxford, CT	6 TWh	Apr 2018	May 2026	Natural Gas
Spruce Mountain WInd	CPV Spruce Mountain Wind LLC	Bryant Pond, ME	53 GWh	Nov 2011	Dec 2025	Wind
Saddleback Ridge Wind Farm	CPV Saddleback Ridge Wind, LLC	Carthage, ME	90 GWh	Nov 2014	Dec 2025	Wind
Canton Mountain Wind	CPV Canton Mountain Wind LLC	Canton, ME	56 GWh	Oct 2017	Dec 2025	Wind
Beaver Ridge Wind	CPV Beaver Ridge Wind LLC	Freedom, ME	11 GWh	Oct 2008	Dec 2025	Wind
Manheim New England	Cox Enterprises	North Dighton, MA	2 GWh	Nov 2012	Dec 2025	Solar
Coventry Photovoltaic, LLC	Coventry Photovoltaic, LLC	Coventry, VT	3 GWh	Jul 2014	Dec 2025	Solar
Covanta Southeastern Connecticut Company	Covanta Southeastern Connecticut Company	Preston, CT	108 GWh	Nov 1991	May 2026	Non-biogenic Municipal Solid Waste : 53.9% Biogenic Municipal Solid Waste : 44.1% Distillate Fuel Oil : 2.1%
Covanta Bristol Energy	Covanta Bristol Inc	Bristol, CT	109 GWh	Nov 1987	May 2026	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Coolidge Solar 1, LLC	Coolidge Solar I, LLC	Ludlow, VT	25 GWh	Nov 2018	May 2026	Solar
Exelon Medway LLC	Constellation Power, Inc	Medway, MA	4 GWh	Jun 1970	Dec 2025	Distillate Fuel Oil
Exelon West Medway II LLC	Constellation Power, Inc	Medway, MA	259 GWh	Feb 2019	May 2026	Natural Gas : 95.3% Kerosene : 4.7%
Exelon Framingham LLC	Constellation Power, Inc	Framingham, MA	1 GWh	Aug 1969	Dec 2025	Distillate Fuel Oil
Fort Hill 1, 2, 3 & 4	Connecticut Mun Elec Engy Coop	Uncasville, CT	734 MWh	Jul 2010	May 2026	Distillate Fuel Oil
Fishers Island 1	Connecticut Mun Elec Engy Coop	Fisher's Island, NY	129 MWh	Nov 2010	Dec 2025	Distillate Fuel Oil
Gary Court 1 & 2	Connecticut Mun Elec Engy Coop	Groton, CT	381 MWh	Jun 2010	Dec 2025	Distillate Fuel Oil
Jewett City 1	Connecticut Mun Elec Engy Coop	Jewett City, CT	139 MWh	Jan 2010	Dec 2025	Distillate Fuel Oil
LNG 1 & 2	Connecticut Mun Elec Engy Coop	Norwich, CT	382 MWh	Mar 2010	Dec 2025	Distillate Fuel Oil
Lebanon Pines 1 & 2	Connecticut Mun Elec Engy Coop	Lebanon, CT	374 MWh	Mar 2010	Dec 2025	Distillate Fuel Oil
Bridge Street 1 & 2	Connecticut Mun Elec Engy Coop	Groton, CT	452 MWh	Jun 2010	Dec 2025	Distillate Fuel Oil
Water Treatment 1 & 2	Connecticut Mun Elec Engy Coop	Groton, CT	494 MWh	Sep 2010	May 2026	Distillate Fuel Oil
Backus Microgrid Project	Connecticut Mun Elec Engy Coop	Norwich, CT	843 MWh	Jul 2014	May 2026	Distillate Fuel Oil
Subase Microgrid Project	Connecticut Mun Elec Engy Coop	Groton, CT	30 GWh	Nov 2022	Dec 2025	Natural Gas
Franklin Drive	Connecticut Jet Power LLC	Torrington, CT	294 MWh	Oct 1968	Dec 2025	Kerosene
Torrington	Connecticut Jet Power LLC	Torrington, CT	277 MWh	Oct 1967	Dec 2025	Kerosene
Branford	Connecticut Jet Power LLC	Branford, CT	288 MWh	Oct 1967	Dec 2025	Kerosene
Cos Cob	Connecticut Jet Power LLC	Greenwich, CT	2 GWh	Aug 1969	Dec 2025	Kerosene
Johnston Solar	Concord New Energy	Town of Johnston, RI	2 GWh	Jun 2015	Dec 2025	Solar
Greater New Bedford LFG Utiliz. Facility	CommonWealth New Bedford Energy LLC	New Bedford, MA	13 GWh	Sep 2005	Dec 2025	Landfill Gas
GD Richmond Buttonwoods I, LLC	CleanCapital Holdings	Richmond, RI	2 GWh	Nov 2019	Dec 2025	Solar
GD West Greenwich Victory I, LLC	CleanCapital Holdings	West Greenwich, RI	3 GWh	Nov 2019	Dec 2025	Solar
WED GW Solar, LLC	CleanCapital Holdings	Lincoln, RI	4 GWh	Dec 2018	Dec 2025	Solar
GSPP Boxborough Littleton (MA)	CleanCapital Holdings	Boxborough, MA	6 GWh	Dec 2018	Dec 2025	Solar
WED Kingstown Solar I - East Array	CleanCapital Holdings	Washington, RI	5 GWh	Nov 2017	Dec 2025	Solar
Dartmouth Landfill	CleanCapital Holdings	Dartmouth, MA	2 GWh	Jan 2013	Dec 2025	Solar
WED Stilson Solar	CleanCapital Holdings	Richmond, RI	3 GWh	Nov 2017	Dec 2025	Solar
WED Kingstown Solar I, LLC - West	CleanCapital Holdings	Richmond, RI	2 GWh	Nov 2017	Dec 2025	Solar
Easton Landfill	CleanCapital Holdings	Easton, MA	3 GWh	Sep 2013	Dec 2025	Solar
Lepomis PV Energy LLC	CleanCapital Holdings	Plymouth, MA	8 GWh	May 2014	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