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	Nov 2025
Annual Generation	105.5 TWh
Power Plants	1,577
Utilities	819
Ranked #15 out of 65 in terms of net annual generation
Ranked #12 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 55.8% Nuclear \| 26% Water \| 5% Other Fuel \| 4.4% Wind \| 4% Solar \| 1.5% Coal \| 0.4%

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Daily Net Generation for ISO New England for the past 3 Years

Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
BWC Rams Horn Channel LLC	Navisun LLC	Beverly, MA	6 GWh	Nov 2020	Dec 2024	Solar
Kearsarge 100 Sohier Rd	Kearsarge Beverly LLC	Beverly, MA	5 GWh	Apr 2023	Dec 2024	Solar
Equinix - Billerica	Bloom Energy	Billerica, MA	15 GWh	Aug 2021	Dec 2024	Natural Gas
Shaffer	CD US Solar MT3, LLC	Billerica, MA	7 GWh	Aug 2014	Dec 2024	Solar
Wyman Hydro	Brookfield White Pine Hydro LLC	Bingham, ME	337 GWh	Dec 1929	Dec 2024	Water
Bingham Wind	Onward Energy	Bingham, ME	489 GWh	Nov 2016	Sep 2025	Wind
ANP Blackstone Energy Project	ANP Blackstone Energy Company LLC	Blackstone, MA	3 TWh	May 2001	Sep 2025	Natural Gas
MA Blackstone	Catalyze Blackstone 83 Federal Street Microgrid, LLC	Blackstone, MA	4 GWh	Jun 2022	Dec 2024	Solar
Syncarpha Blandford Hybrid CSG	Syncarpha Blandford, LLC	Blandford, MA	8 GWh	Nov 2019	Dec 2024	Solar
Niagara Bottling - Bloomfield	Westbound Solar 3, LLC	Bloomfield, CT	5 GWh	Oct 2022	Dec 2024	Solar
Pepperidge Farm Bloomfield	Pepperidge Farm, Inc.- Bloomfield	Bloomfield, CT	15 GWh	Jul 2008	Dec 2024	Natural Gas
Bolton PV	AES Distributed Energy	Bolton, MA	7 GWh	Nov 2013	Dec 2024	Solar
Syncarpha Still River, LLC CSG	Syncarpha Still River, LLC	Bolton, MA	4 GWh	Nov 2016	Dec 2024	Solar
Boltonville Hydro Associates	Boltonville Hydro Associates	Boltonville, VT	3 GWh	Jun 1984	Dec 2024	Water
Penacook Lower Falls	Briar-Hydro Associates	Boscawen, NH	17 GWh	Jul 1983	Dec 2024	Water
Medical Area Total Energy Plant	MATEP LLC	Boston, MA	318 GWh	Dec 1979	Dec 2024	Natural Gas : 98.3% Distillate Fuel Oil : 1.7%
M Street Jet	Massachusetts Bay Trans Auth	Boston, MA	457 MWh	Apr 1979	Dec 2024	Kerosene
Meadow Solar	Altus Power America Management, LLC	Boston, MA	4 GWh	Nov 2016	Dec 2024	Solar
Boston Medical Center CHP Plant	Boston Medical Center	Boston, MA	14 GWh	Mar 2017	Dec 2024	Natural Gas
Gillette SBMC	The Gillette Company	Boston, MA	55 GWh	Jan 1971	Sep 2025	Natural Gas
Garvins Falls	Central Rivers Power NH, LLC	Bow, NH	31 GWh	Jul 1925	Dec 2024	Water
Merrimack	Granite Shore Power	Bow, NH	364 GWh	Nov 1960	Sep 2025	Bituminous Coal : 99.7%
Augusta Road Bowdoin Solar, LLC	REA Investments, LLC	Bowdoin, ME	5 GWh	Jan 2022	Dec 2024	Solar
GSPP Boxborough Littleton (MA)	GSPP Boxborough Littleton, LLC	Boxborough, MA	6 GWh	Dec 2018	Dec 2024	Solar
CMEEC - Bozrah	Tesla Inc.	Bozrah, CT	3 GWh	Nov 2016	Dec 2024	Solar
Alton Road Solar	Revity Energy LLC	Bradford, RI	24 GWh	Nov 2019	Dec 2024	Solar
Smith (VT)	Green Mountain Power Corp	Bradford, VT	2 GWh	Nov 1982	Dec 2024	Water
Braintree Landfill Solar	Ameresco, Inc - Braintree	Braintree, MA	1 GWh	Nov 2014	Dec 2024	Solar
Potter Station 2	Town of Braintree - (MA)	Braintree, MA	23 GWh	Jun 1963	Dec 2024	Natural Gas : 93.9% Distillate Fuel Oil : 6.1%
Town of Branford	Tesla Inc.	Branford, CT	2 GWh	May 2018	Dec 2024	Solar
Branford	Connecticut Jet Power LLC	Branford, CT	109 MWh	Oct 1967	Dec 2024	Kerosene
Technology Drive Solar	Consolidated Edison Development Inc.	Brattleboro, VT	3 GWh	Aug 2014	Dec 2024	Solar
Brattleboro (Windham Landfill)	Greenbacker Renewable Energy Corporation	Brattleboro, VT	7 GWh	Jul 2018	Dec 2024	Solar
Brewer (CSG)	Nautilus Solar Solutions	Brewer, ME	2 GWh	Jul 2024	Dec 2024	Solar
CVEC Round 4 Brewster Captn Golf Course	Freemans Way Solar Project 2019, LLC	Brewster, MA	1 GWh	Feb 2022	Dec 2024	Solar
Brewster Landfill	Clean Focus Yield, LLC	Brewster, MA	5 GWh	Aug 2014	Dec 2024	Solar
Bridgeport Energy Project	Bridgeport Energy LLC	Bridgeport, CT	2 TWh	May 1998	Sep 2025	Natural Gas
UI RCP Bridgeport Seaside	United Illuminating Co	Bridgeport, CT	21 GWh	Oct 2015	Sep 2025	Natural Gas : 84.6% Solar : 15.4%
Bridgeport Fuel Cell, LLC	Bridgeport Fuel Cell, LLC	Bridgeport, CT	97 GWh	Nov 2013	Dec 2024	Natural Gas
Bridgeport Station	Generation Bridge II Connecticut, LLC	Bridgeport, CT	4 TWh	Jul 1961	Sep 2025	Natural Gas : 98.6% Distillate Fuel Oil : 1.4%
Wheelabrator Bridgeport	Wheelabrator Environmental Systems	Bridgeport, CT	473 GWh	Jun 1988	Sep 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
UB Fuel Cell	UB Fuel Cell	Bridgeport, CT	10 GWh	Mar 2015	Dec 2023	Natural Gas
Bridgewater Complex Co-Generation Plant	Massachusetts Department of Correction	Bridgewater, MA	1 GWh	Oct 2015	Dec 2024	Natural Gas
Bridgewater Solar CSG	MN8 Energy LLC	Bridgewater, MA	4 GWh	Jul 2015	Dec 2024	Solar
Bridgewater Power LP	Bridgewater Power Co LP	Bridgewater, NH	93 GWh	Jul 1987	Dec 2024	Wood/Wood Waste Solids : 99.5%
201 Sturbridge B	Altus Power America Management, LLC	Brimfield, MA	2 GWh	May 2014	Dec 2024	Solar
205 Sturbridge A	Altus Power America Management, LLC	Brimfield, MA	3 GWh	May 2014	Dec 2024	Solar
Brimfield	WEB Brimfield Solar LLC	Brimfield, MA	3 GWh	Nov 2021	Dec 2024	Solar
Bristol Solar One, LLC	DG Connecticut III, LLC	Bristol, CT	5 GWh	Apr 2021	Dec 2024	Solar
Covanta Bristol Energy	Covanta Bristol Inc	Bristol, CT	108 GWh	Nov 1987	Sep 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
ME - EDFR - Phase I - Bristol	Overlook Solar Partners, LLC	Bristol, ME	6 GWh	Nov 2023	Nov 2024	Solar
Ayers Island	Central Rivers Power NH, LLC	Bristol, NH	40 GWh	Jul 1925	Dec 2024	Water
Newfound Hydroelectric	Eagle Creek Renewable Energy, LLC	Bristol, NH	4 GWh	Nov 1983	Dec 2024	Water
Bristol Landfill Solar	NuGen Capital Management	Bristol, RI	8 GWh	Feb 2024	Dec 2024	Solar
Redman South Community Solar	AES Distributed Energy	Brockport, NY	10 GWh	Jan 2022	Dec 2024	Solar
Redman North Community Solar	AES Distributed Energy	Brockport, NY	2 GWh	Jan 2022	Aug 2024	Solar
Onyx - Brockton Thatcher Landfill Solar	Onyx Asset Services Group	Brockton, MA	5 GWh	Oct 2017	Dec 2024	Solar
Brookfield Wire Company	Dynamic Energy Solutions, LLC	Brookfield, MA	2 GWh	May 2016	Dec 2024	Solar
WEB Brookfield	WEB Brookfield Solar LLC	Brookfield, MA	6 GWh	Nov 2021	Dec 2024	Solar
Quinebaug Lower Project	Quinebaug Associates LLC	Brooklyn, CT	6 GWh	Mar 1990	Dec 2024	Water
Brunswick Hydro	Brookfield White Pine Hydro LLC	Brunswick, ME	88 GWh	Feb 1982	Dec 2024	Water
SCS Harpswell 012903 Brunswick, LLC	Arevon Energy, Inc.	Brunswick, ME	7 GWh	Oct 2022	Dec 2024	Solar
Spruce Mountain WInd	CPV Spruce Mountain Wind LLC	Bryant Pond, ME	54 GWh	Nov 2011	Dec 2024	Wind
Deerfield 3	Great River Hydro, LLC	Buckland, MA	25 GWh	Jul 1912	Dec 2024	Water
Gardners Falls	Central Rivers Power MA, LLC	Buckland, MA	11 GWh	Dec 1913	Dec 2024	Water
Deerfield 4	Great River Hydro, LLC	Buckland, MA	20 GWh	Jul 1912	Dec 2024	Water
Bucksport Generation LLC	Bucksport Generation LLC	Bucksport, ME	10 GWh	Jun 1965	Aug 2025	Natural Gas : 97.3% Distillate Fuel Oil : 2.7%
Burlington Solar 1	DG Connecticut III, LLC	Burlington, CT	6 GWh	Jan 2022	Dec 2024	Solar
J C McNeil	City of Burlington Electric - (VT)	Burlington, VT	228 GWh	May 1984	Sep 2025	Wood/Wood Waste Solids : 99.9%
Burlington GT	City of Burlington Electric - (VT)	Burlington, VT	358 MWh	Aug 1971	Dec 2024	Distillate Fuel Oil
Pittsfield Hydro	KEI (Maine) Power Management (II) LLC	Burnham, ME	3 GWh	Jun 1986	Dec 2024	Water
Nautilus Goat Island Solar LLC (CSG)	Nautilus Solar Solutions	Burrillville, RI	4 GWh	Jul 2019	Dec 2024	Solar
Kearsarge Smithfield LLC	Kearsarge Smithfield LLC	Burrillville, RI	14 GWh	Mar 2023	Dec 2024	Solar
Town of Burrillville Solar CSG	Standard Solar	Burrillville, RI	5 GWh	Sep 2020	Dec 2024	Solar
Douglas Pike Solar, LLC	Navisun LLC	Burrillville, RI	3 GWh	May 2023	Dec 2024	Solar
West Buxton	Brookfield White Pine Hydro LLC	Buxton, ME	20 GWh	Dec 1903	Dec 2024	Water
Greene County Meter #1	Tesla Inc.	Cairo, NY	2 GWh	Jan 2018	Dec 2024	Solar
Kendall Square Station	Kendall Green Energy, LLC	Cambridge, MA	2 TWh	May 1949	Sep 2025	Natural Gas : 99.1% Distillate Fuel Oil : 0.9%
Mass Inst Tech Cntrl Utilities/Cogen Plt	Massachusetts Inst of Tech	Cambridge, MA	205 GWh	May 1995	Dec 2024	Natural Gas
Canaan	Central Rivers Power NH, LLC	Canaan, VT	6 GWh	Jul 1927	Dec 2024	Water
Lenox Renewables	Lenox Renewables, LLC	Canastota, NY	5 GWh	Aug 2021	Dec 2024	Solar
Quinebaug Solar	Quinebaug Solar, LLC	Canterbury, CT	81 GWh	Nov 2021	Sep 2025	Solar
Canton GLC Solar, LLC	REA Investments, LLC	Canton, ME	4 GWh	Mar 2024	Dec 2024	Solar
Canton Mountain Wind	CPV Canton Mountain Wind LLC	Canton, ME	51 GWh	Oct 2017	Dec 2024	Wind
Canton	Captona Canton LLC	Canton, MA	6 GWh	Jul 2012	Dec 2024	Solar
Caribou	Altus Power America Management, LLC	Caribou, ME	6 GWh	Jul 2023	Dec 2024	Solar
ME Novel Lighthouse - Carrabassett	Luminace Sunbeam Development Holdings, LLC	Carrabassett Valley, ME	5 GWh	Nov 2023	Dec 2024	Solar
Saddleback Ridge Wind Farm	CPV Saddleback Ridge Wind, LLC	Carthage, ME	83 GWh	Nov 2014	Dec 2024	Wind
Carver MA 1 Community Solar	Navisun LLC	Carver, MA	3 GWh	Aug 2016	Dec 2024	Solar
Carver CSG	Altus Power America Management, LLC	Carver, MA	4 GWh	Apr 2019	Dec 2024	Solar
Spring Street Solar 1 CSG	Spring Street Solar 1, LLC	Carver, MA	3 GWh	Feb 2017	Dec 2024	Solar
196 Tremont St(CSG)	196TRE WHAM8 Solar, LLC	Carver, MA	4 GWh	Oct 2021	Dec 2024	Solar
276 Federal Rd(CSG)	276FED WHAM8 Solar, LLC	Carver, MA	10 GWh	Oct 2021	Dec 2024	Solar
Ravenbrook	Captona Ravenbrook LLC	Carver, MA	7 GWh	Nov 2013	Dec 2024	Solar
59 Federal Rd(CSG)	59FED WHAM8 Solar, LLC	Carver, MA	11 GWh	Oct 2021	Dec 2024	Solar
0 Hammond St CSG	0HAM WHAM8 Solar, LLC	Carver, MA	14 GWh	Sep 2021	Dec 2024	Solar
Ward Solar 1, LLC	REA Investments, LLC	Carver, MA	3 GWh	Jan 2019	Dec 2024	Solar
ER Sand Hill	Greenbacker Renewable Energy Corporation	Castleton, VT	4 GWh	Oct 2022	Dec 2024	Solar
Cavendish	Green Mountain Power Corp	Cavendish, VT	830 MWh	Jan 1907	Dec 2024	Water
Kibby Wind Facility	Helix Maine Wind Development, LLC	Chain of Ponds, ME	262 GWh	Sep 2009	Sep 2025	Wind

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	696.7 GWh	4
#25	Dominion Energy South Carolina, Inc.	25.7 TWh	87
#13	Duke Energy Carolinas	112.5 TWh	565
#17	Duke Energy Progress East	64.3 TWh	559
#52	Duke Energy Progress West	4.3 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.4 TWh	25
#12	New York Independent System Operator	131.6 TWh	1,211
#1	PJM Interconnection, LLC	870.7 TWh	2,465
#30	South Carolina Public Service Authority	18.9 TWh	34
#59	Southeastern Power Administration	1.5 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	188.0 TWh	2,075
#9	Tennessee Valley Authority	161.6 TWh	204
#10	Florida Power & Light Co.	148.9 TWh	187
#12	New York Independent System Operator	131.6 TWh	1,211
#13	Duke Energy Carolinas	112.5 TWh	565
#15	ISO New England	105.5 TWh	1,577
#16	Bonneville Power Administration	80.5 TWh	163
#17	Duke Energy Progress East	64.3 TWh	559
#18	PacifiCorp East	61.1 TWh	216
#19	Salt River Project Agricultural Improvement and Power District	60.0 TWh	48