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 2024
Annual Generation	103.1 TWh
Power Plants	1,487
Utilities	782
Ranked #15 out of 65 in terms of net annual generation
Ranked #11 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 57.5% Nuclear \| 25.1% Water \| 7.5% Other Fuel \| 4.5% Wind \| 3.3% Solar \| 1.2% Coal \| 0.1%

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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
Lower Middlebury	Green Mountain Power Corp	Middlebury Lower, VT	4 GWh	Jul 1917	Nov 2023	Water
Cranberry Solar	GWE Cranberry Solar RT, LLC	Middleborough, MA	2 GWh	Nov 2016	Dec 2023	Solar
154 D Fisher	Greenbacker Renewable Energy Corporation	Middleborough, MA	2 GWh	Nov 2015	Dec 2023	Solar
115 G Fisher	Greenbacker Renewable Energy Corporation	Middleborough, MA	2 GWh	Sep 2015	Dec 2023	Solar
Methuen Landfill	CleanCapital Holdings	Methuen, MA	2 GWh	Jun 2013	Dec 2023	Solar
Ayers Village Solar	Altus Power America Management, LLC	Methuen, MA	3 GWh	May 2014	Dec 2023	Solar
Merrimack Solar Farm, LLC	Merrimack Solar Farm	Merrimack, NH	3 GWh	Dec 2018	Dec 2023	Solar
Merrimac Solar	Consolidated Edison Development Inc.	Merrimac, MA	2 GWh	Nov 2013	Dec 2023	Solar
BWC Wading River One, Two, Three CSG	Ameresco BWC Wading River LLC	Mendon, MA	5 GWh	Oct 2017	Dec 2023	Solar
BWC Muddy Brook, LLC Hybrid	AES Distributed Energy	Mendon, MA	2 GWh	Aug 2021	Dec 2023	Solar
Mendon	BWC Box Pond LLC	Mendon, MA	4 GWh	Nov 2017	Dec 2023	Solar
Exelon Medway LLC	Constellation Power, Inc	Medway, MA	4 GWh	Jun 1970	Dec 2023	Distillate Fuel Oil
Exelon West Medway II LLC	Constellation Power, Inc	Medway, MA	197 GWh	Feb 2019	Sep 2024	Natural Gas : 99.6%
Medway Hydro	Brookfield Black Bear Hydro, LLC	Medway, ME	28 GWh	Dec 1922	Dec 2023	Water
Mechanic Falls	KEI (Maine) Power Management (IV) LLC	Mechanic Falls, ME	3 GWh	Mar 1986	Dec 2023	Water
Maynard PV	Terraform Arcadia	Maynard, MA	1 GWh	Dec 2013	Dec 2023	Solar
DG Crystal Spring CSG	DG Crystal Spring CSG	Mattapoisett, MA	7 GWh	Jun 2017	Dec 2023	Solar
BWC Origination 18	BWC Origination 18, LLC	Mattapoisett, MA	7 GWh	Nov 2018	Dec 2023	Solar
Mashpee Landfill Solar	Nautilus Solar Solutions	Mashpee, MA	2 GWh	Aug 2014	Dec 2023	Solar
Foxwoods CoGen	Foxwoods Resort Casino	Mashantucket, CT	11 GWh	May 2010	Dec 2023	Natural Gas
Barnstable Landfill	Clean Focus Yield, LLC	Marstons Mills, MA	5 GWh	Aug 2014	Dec 2023	Solar
Marshfield 6	Green Mountain Power Corp	Marshfield, VT	9 GWh	Dec 1926	Dec 2023	Water
Marshfield PV	Terraform Arcadia	Marshfield, MA	5 GWh	Nov 2013	Dec 2023	Solar
Emerald Marshfields, LLC	Emerald Marshfield, LLC	Marshfield, MA	2 GWh	Nov 2022	Dec 2023	Solar
Wilkins Station	Town of Marblehead - (MA)	Marblehead, MA	78 MWh	Oct 1975	Dec 2023	Distillate Fuel Oil
Kenmare - Mansfield Branch Street	MN8 Energy LLC	Mansfield, MA	2 GWh	May 2017	Dec 2023	Solar
Amoskeag	Central Rivers Power NH, LLC	Manchester, NH	114 GWh	Jul 1922	Dec 2023	Water
Treasure Lane Solar 1	AES Clean Energy	Manchester, ME	1 GWh	Apr 2023	Dec 2023	Solar
Manchester Community College East	Onyx Asset Services Group	Manchester, CT	1 GWh	Sep 2018	Dec 2023	Solar
IOS - MEW Phase 1	IGS ORIX Solar I, LLC	Madison, ME	5 GWh	Dec 2016	Dec 2023	Solar
Anson Abenaki Hydros	Eagle Creek Renewable Energy, LLC	Madison, ME	145 GWh	Dec 1949	Dec 2023	Water
Dynamic Madison	MN8 Energy LLC	Madison, ME	9 GWh	Jul 2022	Dec 2023	Solar
General Electric Aircraft Engines	General Electric Aircraft Engines	Lynn, MA	2 GWh	Dec 1947	Sep 2024	Solar
Great Falls (VT)	The Town of Lyndon Electric Department	Lyndon, VT	3 GWh	Jul 1915	Dec 2023	Water
GSPP Gilman, LLC	Green Street Power Partners	Lunenburg, VT	3 GWh	Aug 2018	Dec 2023	Solar
651 Chase Solar NG	NuGen Capital Management	Lunenburg, MA	4 GWh	May 2014	Dec 2023	Solar
265 Pleasant Solar NG, LLC	NuGen Capital Management	Lunenburg, MA	1 GWh	Jun 2014	Dec 2023	Solar
Electric Avenue Lunenburg Solar 1	Electric Avenue Lunenburg Solar 1, LLC	Lunenburg, MA	2 GWh	Nov 2021	Dec 2023	Solar
Settlers Solar	Settlers Solar, LLC	Lunenberg, MA	7 GWh	Nov 2020	Dec 2023	Solar
Coolidge Solar 1, LLC	Coolidge Solar I, LLC	Ludlow, VT	27 GWh	Nov 2018	Sep 2024	Solar
Ludlow Site 72 - Conti	NSTAR Electric Company	Ludlow, MA	2 GWh	Jul 2018	Dec 2023	Solar
Putts Bridge	Central Rivers Power MA, LLC	Ludlow, MA	22 GWh	Dec 1917	Dec 2023	Water
Ludlow Landfill	CleanCapital Holdings	Ludlow, MA	3 GWh	Jul 2013	Dec 2023	Solar
Stony Brook	Massachusetts Mun Wholes Electric Co	Ludlow, MA	25 GWh	Oct 1981	Sep 2024	Distillate Fuel Oil : 98.3% Natural Gas : 1.7%
Kearsarge Ludlow LLC	Kearsarge Ludlow LLC	Ludlow, MA	6 GWh	Nov 2020	Dec 2023	Solar
Huxley Solar	Huxley Solar, LLC	Ludlow, MA	4 GWh	Nov 2022	Dec 2023	Solar
Kingdom Community Wind	Green Mountain Power Corp	Lowell, VT	156 GWh	Oct 2012	Sep 2024	Wind
Boott Hydropower	Boott Hydro, LLC - Hybrid	Lowell, MA	56 GWh	Sep 1985	Dec 2022	Water
Lowell Solar Landfill	Heliovaas LLC	Lowell, MA	1 GWh	Nov 2013	Dec 2023	Solar
Pumpkin Hill	KEI (Maine) Power Management (II) LLC	Lowell, ME	5 GWh	Feb 1987	Dec 2023	Water
Granite Ridge	Granite Ridge Energy LLC	Londonderry, NH	3 TWh	Feb 2003	Sep 2024	Natural Gas
Pendleton Solar 1	Pendleton Solar 1, LLC	Lockport, NY	7 GWh	Sep 2020	Dec 2023	Solar
Livermore Falls CSG	Livermore Falls CSG, LLC	Livermore Falls, ME	5 GWh	Apr 2022	Dec 2023	Solar
International Paper Livermore Hydro	Eagle Creek Renewable Energy, LLC	Livermore Falls, ME	10 GWh	Dec 1909	Dec 2023	Water
ReEnergy Livermore Falls	ReEnergy Livermore Falls	Livermore Falls, ME	223 GWh	Jul 1992	Dec 2023	Wood/Wood Waste Solids
Otis Hydro	Eagle Creek Renewable Energy, LLC	Livermore Falls, ME	30 GWh	Dec 1984	Sep 2024	Water
S C Moore	Great River Hydro, LLC	Littleton, NH	328 GWh	Dec 1956	Dec 2023	Water
Nextsun Energy Littleton	Greenbacker Renewable Energy Corporation	Littleton, MA	5 GWh	Sep 2013	Dec 2023	Solar
Little Falls Solar	Little Falls Solar	Little Falls, NY	4 GWh	Sep 2020	Dec 2023	Solar
Little Falls Solar 1	Little Falls Solar 1, LLC	Little Falls, NY	3 GWh	Aug 2020	Dec 2023	Solar
Wheelabrator Lisbon	Wheelabrator Environmental Systems	Lisbon, CT	100 GWh	Sep 1995	Sep 2024	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Worumbo Hydro Station	Eagle Creek Renewable Energy, LLC	Lisbon Falls, ME	105 GWh	Jan 1989	Dec 2023	Water
WED GW Solar, LLC	WED GW Solar, LLC CSG	Lincoln, RI	4 GWh	Dec 2018	Dec 2023	Solar
Loring	VC Renewables	Limestone, ME	4 GWh	Apr 2023	Dec 2023	Solar
Town of Lexington Solar	Syncarpha Lexington, LLC	Lexington, MA	2 GWh	Apr 2017	Dec 2023	Solar
Gulf Island	Brookfield White Pine Hydro LLC	Lewiston, ME	169 GWh	Dec 1925	Dec 2023	Water
Charles E Monty	Brookfield White Pine Hydro LLC	Lewiston, ME	177 GWh	Dec 1989	Dec 2023	Water
Merrill Road Solar	NextGrid Mangrove, LLC	Lewiston, ME	6 GWh	Feb 2022	Dec 2023	Solar
Lisbon Street Solar	NextGrid Cliffrose, LLC	Lewiston, ME	3 GWh	Mar 2022	Dec 2023	Solar
AIS Solar Project	Terraform Arcadia	Leominster, MA	4 GWh	Nov 2016	Dec 2023	Solar
Leominster	Syncarpha Massachusetts, LLC	Leominster, MA	3 GWh	Apr 2015	Dec 2023	Solar
Lempster Wind LLC	Avangrid Renewables LLC	Lempster, NH	60 GWh	Nov 2008	Sep 2024	Wind
Syncarpha Leicester Hybrid CSG	Syncarpha Leicester, LLC	Leicester, MA	4 GWh	May 2021	Dec 2023	Solar : 99.5% Electricity used for energy storage : 0.5%
Antanavica Solar	Cypress Creek Renewables	Leicester, MA	1 GWh	Jul 2018	Dec 2023	Solar
Boutillier Solar, LLC CSG	38 Degrees North, LLC	Leicester, MA	5 GWh	Mar 2018	Dec 2023	Solar
Stafford St Solar 1 CSG	Stafford St Solar 1, LLC	Leicester, MA	12 GWh	Nov 2017	Dec 2023	Solar
Stafford St Solar 3 CSG	Stafford St Solar 3, LLC	Leicester, MA	2 GWh	Nov 2017	Dec 2023	Solar
Cherry Valley Solar, LLC CSG	38 Degrees North, LLC	Leicester, MA	2 GWh	Oct 2017	Dec 2023	Solar
Leicester One MA Solar LLC	CVI CleanCapital Solar 1 LLC	Leicester, MA	5 GWh	Dec 2014	Dec 2023	Solar
Lee Site 31 Solar	NSTAR Electric Company	Lee, MA	2 GWh	Jul 2018	Dec 2023	Solar
Stafford St 2 Community Solar	Stafford St Solar 2, LLC	Lecister, MA	3 GWh	Apr 2018	Dec 2023	Solar
Lebanon Pines 1 & 2	Connecticut Mun Elec Engy Coop	Lebanon, CT	577 MWh	Mar 2010	Dec 2023	Distillate Fuel Oil
Adams Solar	Ecos Energy LLC	Lebanon, CT	1 GWh	Feb 2018	Dec 2023	Solar
Hamilton Solar	Ecos Energy LLC	Lebanon, CT	2 GWh	Feb 2018	Dec 2023	Solar
Jefferson Solar	Ecos Energy LLC	Lebanon, CT	2 GWh	Dec 2017	Dec 2023	Solar
Wilson Solar	Ecos Energy LLC	Lebanon, CT	2 GWh	Feb 2018	Dec 2023	Solar
Franklin Solar	Ecos Energy LLC	Lebanon, CT	2 GWh	Feb 2018	Dec 2023	Solar
Lawrence Hydroelectric Associates	Central Rivers Power US, LLC	Lawrence, MA	94 GWh	Jun 1981	Dec 2023	Water
Berkshire Wind Power Project	Massachusetts Mun Wholes Electric Co	Lanesboro, MA	30 GWh	Apr 2011	Sep 2024	Wind
EDF Lancaster	CleanCapital Holdings	Lancaster, MA	6 GWh	Jun 2014	Dec 2023	Solar
Brockelman	Integrys MA Solar, LLC	Lancaster, MA	5 GWh	Oct 2013	Dec 2023	Solar
Nationwide	Nationwide Solar Energy LLC	Lancaster, MA	4 GWh	May 2021	Dec 2023	Solar
ZPD-PT Solar Project 2017-038 Hybrid LLC	AES Distributed Energy	Lancaster, MA	7 GWh	Mar 2021	Dec 2023	Solar
Amaterasu LLC	AES Distributed Energy	Lancaster, MA	7 GWh	May 2021	Dec 2023	Solar
Brockelman Road Solar 2	Brockelman Road Solar 2, LLC	Lancaster, MA	2 GWh	Jul 2021	Dec 2023	Solar
Lakeville Solar	C2 MA Lakeville, LLC	Lakeville, MA	3 GWh	Nov 2018	Dec 2023	Solar
Raboth - Marion Drive	Madison Energy Holdings LLC	Kingston, MA	4 GWh	Feb 2021	Dec 2023	Solar
A Street 1	Captona A Street 1 Johnston LLC	Johnston, RI	2 GWh	Nov 2018	Dec 2023	Solar
Pine Hill	AEP Onsite Partners, LLC	Johnston, RI	8 GWh	Jul 2020	Dec 2023	Solar
A Street 2	Captona A Street 2 Johnston LLC	Johnston, RI	3 GWh	Nov 2018	Dec 2023	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	903.4 GWh	4
#25	Dominion Energy South Carolina, Inc.	26.0 TWh	85
#13	Duke Energy Carolinas	110.9 TWh	556
#17	Duke Energy Progress East	63.2 TWh	554
#51	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	33.1 TWh	20
#12	New York Independent System Operator	129.8 TWh	1,100
#1	PJM Interconnection, LLC	843.4 TWh	2,305
#31	South Carolina Public Service Authority	17.9 TWh	33
#60	Southeastern Power Administration	1.6 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	192.0 TWh	1,943
#9	Tennessee Valley Authority	157.6 TWh	170
#10	Florida Power & Light Co.	147.6 TWh	159
#12	New York Independent System Operator	129.8 TWh	1,100
#13	Duke Energy Carolinas	110.9 TWh	556
#15	ISO New England	103.1 TWh	1,487
#16	Bonneville Power Administration	80.0 TWh	158
#17	Duke Energy Progress East	63.2 TWh	554
#18	Salt River Project Agricultural Improvement and Power District	58.9 TWh	45
#19	PacifiCorp East	52.7 TWh	204