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
Easthampton CSG	Easthampton Park Solar 1, LLC	Easthampton, MA	3 GWh	Aug 2020	Dec 2025	Solar
Eastern Maine Medical Center	Eastern Maine Medical Center	Bangor, ME	28 GWh	Sep 2006	May 2026	Natural Gas
East Windsor Solar Two	East Windsor Solar Two, LLC	East Windsor, CT	749 MWh	Aug 2025	Dec 2025	Solar
East Windsor Solar One	DG Connecticut III, LLC	East Windsor, CT	6 GWh	Nov 2021	Sep 2025	Solar
East Windsor	NJR Clean Energy Ventures Corporation	East Windsor, CT	869 MWh	Aug 2025	Dec 2025	Solar
East Springfield Solar PV	NSTAR Electric Company	Springfield, MA	2 GWh	Sep 2018	Dec 2025	Solar
East Longmeadow Solar PV	NSTAR Electric Company	East Longmeadow, MA	8 GWh	Sep 2019	Dec 2025	Solar
East Brookfield Main Street Solar LLC CS	AES Distributed Energy	East Brookfield, MA	1 GWh	Nov 2020	Dec 2025	Solar
East Bridgewater Solar	Altus Power America Management, LLC	East Bridgewater, MA	3 GWh	Oct 2017	Dec 2025	Solar
East Barnet	Green Mountain Power Corp	Barnet, VT	5 GWh	Aug 1984	Dec 2025	Water
East Acres Solar NG, LLC	NuGen Capital Management	Pittsfield, MA	5 GWh	Mar 2017	Dec 2025	Solar
Dynamic - Walpole	AES Distributed Energy	Walpole, MA	2 GWh	May 2017	Dec 2025	Solar
Dynamic - Wales Leeds Junction Road (CSG)	Altus Power America Management, LLC	Wales, ME	7 GWh	Oct 2024	Dec 2025	Solar
Dynamic - Norridgewock Martin Stream (CSG)	Nautilus Solar Solutions	Norridgewock, ME	9 GWh	Oct 2024	Dec 2025	Solar
Dynamic Madison (CSG)	MN8 Energy LLC	Madison, ME	10 GWh	Jul 2022	Dec 2025	Solar
Dynamic - Leeds Solar (CSG)	Nautilus Solar Solutions	Leeds, ME	9 GWh	Oct 2024	Dec 2025	Solar
Dynamic - Gray Solar	Altus Power America Management, LLC	Gray, ME	5 GWh	Nov 2024	Dec 2025	Solar
Dynamic - Glenburn Broadway One (CSG)	Altus Power America Management, LLC	Glenburn, ME	6 GWh	Oct 2024	Dec 2025	Solar
Dynamic - Exeter Solar CSG	Altus Power America Management, LLC	Exeter, ME	6 GWh	Aug 2024	Dec 2025	Solar
Dynamic - Enfield Hammett Road CSG	Altus Power America Management, LLC	Enfield, ME	9 GWh	Aug 2024	Dec 2025	Solar
Dynamic Energy CT STAG	Milford Pepes Farm Road Solar LLC	Milford, CT	2 GWh	Jul 2023	Dec 2024	Solar
Dynamic Corinth (CSG)	MN8 Energy LLC	Corinth, ME	10 GWh	Sep 2022	Dec 2025	Solar
DWW Solar ll	DWW Solar ll LLC	Simsbury, CT	46 GWh	Nov 2019	May 2026	Solar
Dwight	Central Rivers Power MA, LLC	Chicopee, MA	6 GWh	Dec 1919	Dec 2025	Water
Dusenberry	AES Distributed Energy	Troy, NY	7 GWh	Nov 2021	Dec 2025	Solar
Dunstable Solar 1, LLC	AES Distributed Energy	Dunstable, MA	8 GWh	Mar 2021	Dec 2025	Solar
Dudley Solar CSG	Dudley Solar, LLC	Dudley, MA	3 GWh	Jul 2017	Dec 2025	Solar
Dudley River Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2025	Solar
Dudley River 3 Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2025	Solar
Dudley River 2 Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2025	Solar
Dudley Landfill Solar LLC	Dudley Landfill Solar LLC	Dudley, MA	1 GWh	Apr 2025	Dec 2025	Solar
Dudley	AMP MA Dudley	Dudley, MA	8 GWh	Jun 2018	Dec 2025	Solar
Dry Bridge Solar (Brown University)	MN8 Energy LLC	North Kingstown, RI	64 GWh	Oct 2023	May 2026	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
Dover (MA)	BWC Buckmaster Pond LLC	Dover, MA	2 GWh	Jul 2017	Dec 2024	Solar
Douglas Solar	RWE Clean Energy	Douglas, MA	3 GWh	Nov 2012	Dec 2025	Solar
Douglas Pike Solar, LLC	Navisun LLC	Burrillville, RI	3 GWh	May 2023	Dec 2025	Solar
Dorchester Solar Site	Massachusetts Electric Co	Dorchester, MA	2 GWh	Dec 2011	Dec 2025	Solar
Dodge Falls Associates	Dodge Falls Associates LP	Bath, NH	22 GWh	Nov 1990	Dec 2025	Water
Dighton Power Plant	Dighton Power, LLC	Dighton, MA	276 GWh	Apr 1999	Dec 2025	Natural Gas
Dickinson Solar (CT)	Ecos Energy LLC	Hampton, CT	2 GWh	May 2020	Dec 2025	Solar
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
Deweys Mill	Green Mountain Power Corp	White River Jct., VT	2 GWh	May 1989	Dec 2025	Water
Devens	Altus Power America Management, LLC	Shirley, MA	5 GWh	May 2014	Dec 2025	Solar
Derby Hydro	McCallum Enterprises I LP	Shelton, CT	23 GWh	Dec 1988	Dec 2025	Water
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
Depot Hill Solar CSG	CCC Solar Holdings LLC	Charlton, MA	3 GWh	Sep 2016	Dec 2025	Solar
Dennis Landfill	Clean Focus Yield, LLC	Dennis, MA	8 GWh	Aug 2014	Dec 2025	Solar
Deerfield Wind LLC	Avangrid Power LLC	Searsburg, VT	92 GWh	Nov 2017	May 2026	Wind
Deerfield CSG Solar	MN8 Energy LLC	Deerfield, MA	4 GWh	Nov 2017	Dec 2025	Solar
Deerfield 5	Great River Hydro, LLC	Florida, MA	44 GWh	Sep 1974	Dec 2025	Water
Deerfield 4	Great River Hydro, LLC	Buckland, MA	21 GWh	Jul 1912	Dec 2025	Water
Deerfield 3	Great River Hydro, LLC	Buckland, MA	26 GWh	Jul 1912	Dec 2025	Water
Deerfield 2	Great River Hydro, LLC	Conway, MA	29 GWh	Jul 1913	Dec 2025	Water
Deer Rips	Brookfield White Pine Hydro LLC	Auburn, ME	51 GWh	Dec 1902	Dec 2025	Water
Deer Island Treatment Plant	Massachusetts Wtr Rauth-Deer I	Winthrop, MA	33 GWh	Jul 1995	May 2026	Other Biomass Gas : 82.5% Distillate Fuel Oil : 13.1% Wind : 2.7% Solar : 1.8%
DDR Shoppers World	Altus Power America Management, LLC	Framingham, MA	2 GWh	Oct 2017	Dec 2025	Solar
Dartmouth Solar	RWE Clean Energy	Dartmouth, MA	2 GWh	Feb 2011	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 Landfill	CleanCapital Holdings	Dartmouth, MA	2 GWh	Jan 2013	Dec 2025	Solar
Dartmouth II Solar	RWE Clean Energy	Dartmouth, MA	3 GWh	May 2012	Dec 2025	Solar
Dartmouth Farms Solar	Dartmouth Farms Solar, LLC	Dartmouth, MA	4 GWh	Oct 2017	Dec 2025	Solar
Dartmouth College Heating Plant	Dartmouth College	Hanover, NH	11 GWh	Dec 1969	May 2026	Residual Fuel Oil
Dartmouth	Mass Solar, LLC	Dartmouth, MA	6 GWh	Mar 2014	Dec 2025	Solar
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
Dairy Farm	Greenbacker Renewable Energy Corporation	Anson, ME	6 GWh	Sep 2024	Dec 2025	Solar
Cycz Solar Project CSG Hybrid	AES Distributed Energy	Spencer, MA	3 GWh	May 2020	Dec 2025	Solar
CVEC Round 4 Brewster Captn Golf Course	Freemans Way Solar Project 2019, LLC	Brewster, MA	1 GWh	Feb 2022	Dec 2025	Solar
Curtis Hill Solar CSG	CCC Solar Holdings LLC	Charlton, MA	3 GWh	Sep 2016	Dec 2024	Solar
CTGB Osborn	TotalEnergies Renewables USA LLC	Somers, CT	3 GWh	Nov 2024	Dec 2025	Solar
CTGB Maloney and Webster	TotalEnergies Renewables USA LLC	Cheshire, CT	3 GWh	Jun 2025	Dec 2025	Solar
Cronin Road Solar 1, LLC CSG Hybrid	AES Distributed Energy	Warren, MA	3 GWh	May 2020	Dec 2025	Solar
Cream Street Solar	Cream Street Solar, LLC	Hyde Park, NY	4 GWh	Nov 2020	Dec 2025	Solar
Cranberry Solar	GWE Cranberry Solar RT, LLC	Middleborough, MA	2 GWh	Nov 2016	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
CP Middletown Solar II LLC	Green Street Power Partners	Middletown, CT	2 GWh	Nov 2019	Dec 2025	Solar
CP Middletown Solar I LLC	Green Street Power Partners	Middletown, CT	2 GWh	Nov 2019	Dec 2025	Solar
CP East Hampton I & II Solar	NJR Clean Energy Ventures Corporation	East Hampton, CT	3 GWh	Jan 2021	Dec 2024	Solar
Coventry Photovoltaic, LLC	Coventry Photovoltaic, LLC	Coventry, VT	3 GWh	Jul 2014	Dec 2025	Solar
Coventry Clean Energy Corporation	Washington Electric Coop - (VT)	Coventry, VT	57 GWh	Jun 2005	Dec 2025	Landfill Gas
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 Haverhill	Ogden Projects Inc-Haverhill	Haverhill, MA	287 GWh	Apr 1989	May 2026	Non-biogenic Municipal Solid Waste : 52.8% Biogenic Municipal Solid Waste : 43.2% Distillate Fuel Oil : 4.1%
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%
Cottage Street Solar Facility	Western Massachusetts Electric Company	Springfield, MA	4 GWh	Apr 2014	May 2026	Solar
Cosgrove Intake and Power Station	Massachusetts Water Res Auth	Clinton, MA	646 MWh	Dec 1968	Jan 2025	Water
Cos Cob	Connecticut Jet Power LLC	Greenwich, CT	2 GWh	Aug 1969	Dec 2025	Kerosene
Corkwood Solar (CSG)	NextGrid Corkwood, LLC	Howland, ME	6 GWh	Oct 2023	Dec 2025	Solar
CoreSite - Somerville	Bloom Energy	Somerville, MA	28 GWh	Aug 2020	Dec 2025	Natural Gas
Corbin Russwin Phase 3 Berlin	Powerflex	Berlin, CT	2 GWh	Mar 2018	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