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	Oct 2026
Annual Generation	112.2 TWh
Power Plants	1,667
Utilities	846
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% Nuclear \| 25.3% Wind \| 5.7% Water \| 4.6% Other Fuel \| 4.5% Solar \| 1.6% Coal \| 0%

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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
Douglas Pike Solar, LLC	Navisun LLC	Burrillville, RI	3 GWh	May 2023	Dec 2025	Solar
Town of Burrillville Solar CSG	Standard Solar	Burrillville, RI	7 GWh	Sep 2020	Dec 2025	Solar
Pittsfield Hydro	KEI (Maine) Power Management (II) LLC	Burnham, ME	3 GWh	Jun 1986	Dec 2025	Water
Burlington GT	City of Burlington Electric - (VT)	Burlington, VT	684 MWh	Aug 1971	Dec 2025	Distillate Fuel Oil
J C McNeil	City of Burlington Electric - (VT)	Burlington, VT	189 GWh	May 1984	Jul 2026	Wood/Wood Waste Solids : 99.6%
Burlington Solar 1	DG Connecticut III, LLC	Burlington, CT	6 GWh	Jan 2022	Dec 2025	Solar
Penobscot Narrows Solar I	Penobscot Narrows Solar I LLC	Bucksport, ME	7 GWh	May 2024	Dec 2025	Solar
Bucksport Generation LLC	Bucksport Generation LLC	Bucksport, ME	26 GWh	Jun 1965	Jul 2026	Natural Gas : 53.6% Distillate Fuel Oil : 46.4%
Deerfield 4	Great River Hydro, LLC	Buckland, MA	21 GWh	Jul 1912	Dec 2025	Water
Gardners Falls	Central Rivers Power MA, LLC	Buckland, MA	11 GWh	Dec 1913	Dec 2025	Water
Deerfield 3	Great River Hydro, LLC	Buckland, MA	26 GWh	Jul 1912	Dec 2025	Water
Spruce Mountain WInd	CPV Spruce Mountain Wind LLC	Bryant Pond, ME	53 GWh	Nov 2011	Dec 2025	Wind
Brunswick Hydro	Brookfield White Pine Hydro LLC	Brunswick, ME	70 GWh	Feb 1982	Dec 2025	Water
SCS Harpswell 012903 Brunswick, LLC	Arevon Energy, Inc.	Brunswick, ME	7 GWh	Oct 2022	Dec 2025	Solar
Quinebaug Lower Project	Quinebaug Associates LLC	Brooklyn, CT	5 GWh	Mar 1990	Dec 2025	Water
Brookfield Wire Company	Dynamic Energy Solutions, LLC	Brookfield, MA	2 GWh	May 2016	Dec 2025	Solar
WEB Brookfield	WEB Brookfield Solar LLC	Brookfield, MA	6 GWh	Nov 2021	Dec 2025	Solar
Onyx - Brockton Thatcher Landfill Solar	Onyx Asset Services Group	Brockton, MA	5 GWh	Oct 2017	Dec 2025	Solar
Redman North Community Solar	AES Distributed Energy	Brockport, NY	106 MWh	Jan 2022	Dec 2025	Solar
Redman South Community Solar	AES Distributed Energy	Brockport, NY	8 GWh	Jan 2022	Jun 2025	Solar
Bristol Landfill Solar	NuGen Capital Management	Bristol, RI	9 GWh	Feb 2024	Dec 2025	Solar
Newfound Hydroelectric	Eagle Creek Renewable Energy, LLC	Bristol, NH	4 GWh	Nov 1983	Dec 2025	Water
Ayers Island	Central Rivers Power NH, LLC	Bristol, NH	36 GWh	Jul 1925	Dec 2025	Water
ME - EDFR - Phase I - Bristol	Overlook Solar Partners, LLC	Bristol, ME	9 GWh	Nov 2023	Dec 2025	Solar
Bristol Solar One, LLC	DG Connecticut III, LLC	Bristol, CT	5 GWh	Apr 2021	Dec 2025	Solar
Covanta Bristol Energy	Covanta Bristol Inc	Bristol, CT	108 GWh	Nov 1987	Jul 2026	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
205 Sturbridge A	Altus Power America Management, LLC	Brimfield, MA	4 GWh	May 2014	Dec 2025	Solar
201 Sturbridge B	Altus Power America Management, LLC	Brimfield, MA	2 GWh	May 2014	Dec 2025	Solar
Brimfield	WEB Brimfield Solar LLC	Brimfield, MA	3 GWh	Nov 2021	Dec 2025	Solar
Bridgewater Power LP	Bridgewater Power Co LP	Bridgewater, NH	103 GWh	Jul 1987	Dec 2025	Wood/Wood Waste Solids : 99.8%
Bridgewater Solar CSG	MN8 Energy LLC	Bridgewater, MA	4 GWh	Jul 2015	Dec 2025	Solar
20 Bedford	Madison Energy Investments LLC	Bridgewater, MA	146 MWh	Nov 2024	Dec 2025	Solar
Bridgewater Complex Co-Generation Plant	Massachusetts Department of Correction	Bridgewater, MA	1 GWh	Oct 2015	Dec 2025	Natural Gas
UB Fuel Cell	UB Fuel Cell	Bridgeport, CT	10 GWh	Mar 2015	Dec 2025	Natural Gas
UI RCP Bridgeport Seaside	United Illuminating Co	Bridgeport, CT	18 GWh	Oct 2015	Jul 2026	Natural Gas : 85.3% Solar : 14.7%
Wheelabrator Bridgeport	Wheelabrator Environmental Systems	Bridgeport, CT	429 GWh	Jun 1988	Jul 2026	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Bridgeport Fuel Cell, LLC	Bridgeport Fuel Cell, LLC	Bridgeport, CT	90 GWh	Nov 2013	Dec 2025	Natural Gas
Bridgeport Energy Project	Bridgeport Energy LLC	Bridgeport, CT	3 TWh	May 1998	Jul 2026	Natural Gas
Bridgeport Station	Generation Bridge II Connecticut, LLC	Bridgeport, CT	3 TWh	Jul 1961	Jul 2026	Natural Gas : 84.6% Distillate Fuel Oil : 15.4%
Brewster Landfill	Clean Focus Yield, LLC	Brewster, MA	2 GWh	Aug 2014	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
Brewer (CSG)	Nautilus Solar Solutions	Brewer, ME	7 GWh	Jul 2024	Dec 2025	Solar
Brattleboro (Windham Landfill)	Altus Power America Management, LLC	Brattleboro, VT	6 GWh	Jul 2018	Dec 2025	Solar
Technology Drive Solar	RWE Clean Energy	Brattleboro, VT	3 GWh	Aug 2014	Dec 2025	Solar
Town of Branford	Tesla Inc.	Branford, CT	2 GWh	May 2018	Dec 2025	Solar
Branford	Connecticut Jet Power LLC	Branford, CT	288 MWh	Oct 1967	Dec 2025	Kerosene
Braintree Landfill Solar	Ameresco, Inc - Braintree	Braintree, MA	1 GWh	Nov 2014	Dec 2025	Solar
Potter Station 2	Town of Braintree - (MA)	Braintree, MA	41 GWh	Jun 1963	Dec 2025	Natural Gas : 61.2% Distillate Fuel Oil : 38.8%
Smith (VT)	Green Mountain Power Corp	Bradford, VT	2 GWh	Nov 1982	Dec 2025	Water
Alton Road Solar	Revity Energy LLC	Bradford, RI	24 GWh	Nov 2019	Dec 2025	Solar
CMEEC - Bozrah	Tesla Inc.	Bozrah, CT	3 GWh	Nov 2016	Dec 2025	Solar
GSPP Boxborough Littleton (MA)	CleanCapital Holdings	Boxborough, MA	6 GWh	Dec 2018	Dec 2025	Solar
Augusta Road Bowdoin Solar, LLC	REA Investments, LLC	Bowdoin, ME	5 GWh	Jan 2022	Dec 2025	Solar
Merrimack	Granite Shore Power	Bow, NH	32 GWh	Nov 1960	Jul 2026	Bituminous Coal : 92.8% Jet Fuel : 7.1%
Garvins Falls	Central Rivers Power NH, LLC	Bow, NH	25 GWh	Jul 1925	Dec 2025	Water
665 Scenic Highway	Madison Energy Investments LLC	Bourne, MA	89 MWh	Nov 2022	Dec 2025	Solar
Gillette SBMC	The Gillette Company	Boston, MA	59 GWh	Jan 1971	Jul 2026	Natural Gas
Meadow Solar	Altus Power America Management, LLC	Boston, MA	4 GWh	Nov 2016	Dec 2025	Solar
Medical Area Total Energy Plant	MATEP LLC	Boston, MA	314 GWh	Dec 1979	Dec 2025	Natural Gas : 99.0% Distillate Fuel Oil : 1.0%
M Street Jet	Massachusetts Bay Trans Auth	Boston, MA	294 MWh	Apr 1979	Dec 2025	Kerosene
Boston Medical Center CHP Plant	Boston Medical Center	Boston, MA	14 GWh	Mar 2017	Dec 2025	Natural Gas
Penacook Lower Falls	Briar-Hydro Associates	Boscawen, NH	16 GWh	Jul 1983	Dec 2025	Water
Boltonville Hydro Associates	Boltonville Hydro Associates	Boltonville, VT	2 GWh	Jun 1984	Dec 2025	Water
Bolton PV	AES Distributed Energy	Bolton, MA	6 GWh	Nov 2013	Dec 2025	Solar
Syncarpha Still River, LLC CSG	Syncarpha Still River, LLC	Bolton, MA	4 GWh	Nov 2016	Dec 2025	Solar
Pepperidge Farm Bloomfield	Pepperidge Farm, Inc.- Bloomfield	Bloomfield, CT	15 GWh	Jul 2008	Dec 2024	Natural Gas
Niagara Bottling - Bloomfield	Westbound Solar 3, LLC	Bloomfield, CT	4 GWh	Oct 2022	Dec 2025	Solar
Syncarpha Blandford Hybrid CSG	Syncarpha Blandford, LLC	Blandford, MA	8 GWh	Nov 2019	Dec 2025	Solar
MA Blackstone	Catalyze Blackstone 83 Federal Street Microgrid, LLC	Blackstone, MA	7 GWh	Jun 2022	Dec 2025	Solar
ANP Blackstone Energy Project	ANP Blackstone Energy Company LLC	Blackstone, MA	3 TWh	May 2001	Jul 2026	Natural Gas
Bingham Wind	Onward Energy	Bingham, ME	475 GWh	Nov 2016	Jul 2026	Wind
Wyman Hydro	Brookfield White Pine Hydro LLC	Bingham, ME	295 GWh	Dec 1929	Dec 2025	Water
MEVS Clark LLC	MEVS Clark LLC	Bingham, ME	6 GWh	Sep 2023	Dec 2025	Solar
Equinix - Billerica	Bloom Energy	Billerica, MA	14 GWh	Aug 2021	Dec 2025	Natural Gas
Shaffer	CD US Solar MT3, LLC	Billerica, MA	6 GWh	Aug 2014	Dec 2025	Solar
Beverly	Integrys MA Solar, LLC	Beverly, MA	3 GWh	Apr 2014	Dec 2025	Solar
Kearsarge 100 Sohier Rd	Kearsarge Beverly LLC	Beverly, MA	3 GWh	Apr 2023	Dec 2025	Solar
BWC Rams Horn Channel LLC	Navisun LLC	Beverly, MA	6 GWh	Nov 2020	Dec 2025	Solar
Berwick Hubbard Solar 1	Berwick Hubbard Solar 1, LLC	Berwick, ME	6 GWh	Nov 2024	Dec 2025	Solar
Berlin 5	Green Mountain Power Corp	Berlin, VT	1 GWh	May 1972	Jul 2026	Kerosene
Burgess BioPower	Berlin Station, LLC	Berlin, NH	390 GWh	Oct 2013	Dec 2025	Wood/Wood Waste Solids
Smith (NH)	Central Rivers Power NH, LLC	Berlin, NH	87 GWh	Jul 1948	Dec 2025	Water
Jericho Power	Jericho Power LLC	Berlin, NH	23 GWh	Dec 2015	Jul 2026	Wind
Berlin Gorham	Great Lakes Hydro America LLC	Berlin, NH	101 GWh	Dec 1913	Dec 2025	Water
Randall Solar Project Hybrid	AES Distributed Energy	Berlin, MA	9 GWh	Jun 2021	Dec 2025	Solar
New Britain - 142 Deming Rd	Onyx Asset Services Group	Berlin, CT	44 MWh	Nov 2025	Dec 2025	Solar
Corbin Russwin Phase 3 Berlin	Powerflex	Berlin, CT	2 GWh	Mar 2018	Dec 2025	Solar
Berkley	Captona Berkley LLC	Berkley, MA	4 GWh	Mar 2017	Dec 2025	Solar
Padelford Solar	RWE Clean Energy	Berkley, MA	4 GWh	Nov 2012	Dec 2025	Solar
Southern Sky Renew Energy Berkley LLC	Southern Sky Renewable Energy Berkley, LLC	Berkley, MA	4 GWh	May 2014	Dec 2025	Solar
Berkley East Solar LLC	SunEdison LLC	Berkley, MA	5 GWh	Jun 2013	Dec 2025	Solar
GSPP ROUTE 262, LLC	Green Street Power Partners	Bergen, NY	332 MWh	Jul 2025	Dec 2025	Solar
BWC Unity Pond LLC	Navisun LLC	Benton, ME	7 GWh	Nov 2023	Dec 2025	Solar
Benton Falls Associates	Essex Hydro Associates LLC	Benton, ME	10 GWh	Nov 1987	Dec 2025	Water
Battle Creek Solar	Ecos Energy LLC	Bennington, VT	3 GWh	Sep 2018	Dec 2025	Solar
Bellows Falls	Great River Hydro, LLC	Bellow Falls, VT	194 GWh	Feb 1928	Dec 2025	Water
Kearsarge Bellingham PV	Kearsarge Bellingham LLC	Bellingham, MA	5 GWh	Nov 2016	Dec 2025	Solar
ANP Bellingham Energy Project	Bellingham Power Generation LLC	Bellingham, MA	3 TWh	Oct 2002	Jul 2026	Natural Gas
Bellingham Cogeneration Facility	Northeast Energy Associates LP	Bellingham, MA	318 GWh	Aug 1991	Dec 2025	Natural Gas : 95.7% Distillate Fuel Oil : 4.3%
Kearsarge William Way	Kearsarge William Way LLC	Bellingham, MA	7 GWh	Nov 2021	Dec 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	433.0 GWh	4
#24	Dominion Energy South Carolina, Inc.	26.1 TWh	83
#13	Duke Energy Carolinas	113.4 TWh	578
#17	Duke Energy Progress East	66.2 TWh	574
#50	Duke Energy Progress West	4.6 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#12	New York Independent System Operator	134.1 TWh	1,334
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#28	South Carolina Public Service Authority	19.6 TWh	35
#59	Southeastern Power Administration	1.2 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	168.7 TWh	2,170
#9	Tennessee Valley Authority	166.2 TWh	209
#10	Florida Power & Light Co.	153.0 TWh	188
#12	New York Independent System Operator	134.1 TWh	1,334
#13	Duke Energy Carolinas	113.4 TWh	578
#15	ISO New England	112.2 TWh	1,667
#16	Bonneville Power Administration	91.1 TWh	170
#17	Duke Energy Progress East	66.2 TWh	574
#18	PacifiCorp East	61.4 TWh	223
#19	Salt River Project Agricultural Improvement and Power District	60.5 TWh	51