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
Long Plain Solar	Long Plain Solar, LLC	Whatley, MA	3 GWh	Nov 2019	Dec 2023	Solar
Loring	VC Renewables	Limestone, ME	4 GWh	Apr 2023	Dec 2023	Solar
Lost Nation	Granite Shore Power	Groveton, NH	428 MWh	Aug 1969	Dec 2023	Distillate Fuel Oil
Lowell Solar Landfill	Heliovaas LLC	Lowell, MA	1 GWh	Nov 2013	Dec 2023	Solar
Lower Middlebury	Green Mountain Power Corp	Middlebury Lower, VT	4 GWh	Jul 1917	Nov 2023	Water
Lower Village Water Power Project	Sugar River Power LLC	Claremont, NH	6 GWh	Apr 1995	Dec 2023	Water
LR Wheatfield Solar 1	LR Wheatfield Solar 1, LLC	Wheatfield, NY	8 GWh	Sep 2020	Dec 2023	Solar
Ludlow Landfill	CleanCapital Holdings	Ludlow, MA	3 GWh	Jul 2013	Dec 2023	Solar
Ludlow Site 72 - Conti	NSTAR Electric Company	Ludlow, MA	2 GWh	Jul 2018	Dec 2023	Solar
M Street Jet	Massachusetts Bay Trans Auth	Boston, MA	275 MWh	Apr 1979	Dec 2023	Kerosene
MA Blackstone	Catalyze Blackstone 83 Federal Street Microgrid, LLC	Blackstone, MA	4 GWh	Jun 2022	Dec 2023	Solar
MA CS Uxbridge Community Solar	MA CS Uxbridge, LLC	Uxbridge, MA	4 GWh	Jan 2023	Dec 2023	Solar
MA Military Reservation Wind Project	Air Force Civil Engineer Center	Otis ANG Base Bourne, MA	10 GWh	Nov 2009	Dec 2023	Wind
MA Solar Storage 1 Hybrid	Origis Energy USA, Inc	Sterling, MA	1 GWh	Feb 2018	Dec 2023	Solar
MacKinnon Solar	Ecos Energy LLC	Rutland, VT	3 GWh	Jul 2021	Dec 2023	Solar
Madison Solar	Ecos Energy LLC	Somers, CT	2 GWh	Dec 2020	Dec 2023	Solar
Main Rd Community Solar	AES Distributed Energy	Newstead, NY	8 GWh	Jun 2022	Dec 2023	Solar
Main Street Solar Project	Greenbacker Renewable Energy Corporation	Rutland, VT	2 GWh	Nov 2014	Dec 2023	Solar
Maine Independence Station	Casco Bay Energy Co LLC	Veazie, ME	937 GWh	Apr 2000	Dec 2023	Natural Gas
Mainely Solar (Wyman Hill Solar LLC)	Wyman Hill Solar, LLC	Rumford, ME	4 GWh	Nov 2022	Dec 2023	Solar
Manchester Community College East	Onyx Asset Services Group	Manchester, CT	1 GWh	Sep 2018	Dec 2023	Solar
Manchester Community College North	Onyx Asset Services Group	Great Path, CT	2 GWh	Sep 2018	Dec 2023	Solar
Manchester Street	Manchester Street, LLC.	Providence, RI	1 TWh	Aug 1995	Sep 2024	Natural Gas : 99.7%
Manheim New England	Cox Enterprises	North Dighton, MA	3 GWh	Nov 2012	Dec 2023	Solar
Maple(CSG)	Maple Street Solar 1, LLC	Bellingham, MA	6 GWh	Oct 2021	Dec 2023	Solar
Marlborough Solar	Marlborough Solar, LLC	Milton, NY	3 GWh	Feb 2021	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
Mascoma Hydro	Green Mountain Power Corp	W. Lebanon, NH	4 GWh	Nov 1988	Dec 2023	Water
Mashpee Landfill Solar	Nautilus Solar Solutions	Mashpee, MA	2 GWh	Aug 2014	Dec 2023	Solar
Mass Inst Tech Cntrl Utilities/Cogen Plt	Massachusetts Inst of Tech	Cambridge, MA	205 GWh	May 1995	Dec 2023	Natural Gas
Mass Midstate Solar 1	Evergreen Wind, LLC	Warren, MA	7 GWh	Apr 2014	Dec 2023	Solar
Mass Midstate Solar 2	Evergreen Wind, LLC	Warren, MA	7 GWh	Apr 2014	Dec 2023	Solar
Mass Midstate Solar 3	Evergreen Wind, LLC	Warren, MA	6 GWh	Apr 2014	Dec 2023	Solar
Masspower	Masspower	Indian Orchard, MA	609 GWh	Jun 1993	Dec 2023	Natural Gas
Maynard PV	Terraform Arcadia	Maynard, MA	1 GWh	Dec 2013	Dec 2023	Solar
McAllister Landfill	Solar Breakers LLC	Portsmouth, RI	693 MWh	Sep 2022	Dec 2023	Solar
McDougle-Mitchell Solar Project Hybrid CSG	AES Distributed Energy	Charlton, MA	7 GWh	Jul 2020	Dec 2023	Solar
McHenry Solar	Ecos Energy LLC	Hampton, CT	2 GWh	Sep 2021	Dec 2023	Solar
Mcindoes	Great River Hydro, LLC	Barnet, VT	56 GWh	Dec 1930	Dec 2023	Water
MDFA Devens-Saratoga	Terraform Arcadia	Devens, MA	3 GWh	Feb 2016	Dec 2023	Solar
ME-EDFR-Phase I-Woolwich	Green Mile Solar, LLC	Woolwich, ME	2 GWh	Aug 2023	Dec 2023	Solar
ME Novel Lighthouse - Front St. Solar CSG	Luminace Sunbeam Development Holdings, LLC	Skowhegan, ME	1 GWh	Apr 2023	Dec 2023	Solar
Meadow Solar	Altus Power America Management, LLC	Boston, MA	4 GWh	Nov 2016	Dec 2023	Solar
Mechanic Falls	KEI (Maine) Power Management (IV) LLC	Mechanic Falls, ME	3 GWh	Mar 1986	Dec 2023	Water
Medical Area Total Energy Plant	MATEP LLC	Boston, MA	339 GWh	Dec 1979	Dec 2023	Natural Gas : 99.7%
Medtronic - New Haven	Bloom Energy	North Haven, CT	14 GWh	Sep 2020	Dec 2023	Natural Gas
Medtronic - New Haven 2	Bloom Energy	North Haven, CT	17 GWh	Sep 2020	Dec 2023	Natural Gas
Medway Hydro	Brookfield Black Bear Hydro, LLC	Medway, ME	28 GWh	Dec 1922	Dec 2023	Water
Mendon	BWC Box Pond LLC	Mendon, MA	4 GWh	Nov 2017	Dec 2023	Solar
Merrill Road Solar	NextGrid Mangrove, LLC	Lewiston, ME	6 GWh	Feb 2022	Dec 2023	Solar
Merrimac Solar	Consolidated Edison Development Inc.	Merrimac, MA	2 GWh	Nov 2013	Dec 2023	Solar
Merrimack	Granite Shore Power	Bow, NH	151 GWh	Nov 1960	Aug 2024	Bituminous Coal : 98.9% Jet Fuel : 0.9%
Merrimack Solar Farm, LLC	Merrimack Solar Farm	Merrimack, NH	3 GWh	Dec 2018	Dec 2023	Solar
Messalonskee 2 (Oakland)	Messalonskee Stream Hydro LLC	Oakland, ME	13 GWh	Dec 1923	Dec 2023	Water
Messalonskee 3	Messalonskee Stream Hydro LLC	Oakland, ME	7 GWh	Dec 1917	Dec 2023	Water
Messalonskee 5	Messalonskee Stream Hydro LLC	Waterville, ME	5 GWh	Dec 1934	Dec 2023	Water
Methuen Landfill	CleanCapital Holdings	Methuen, MA	2 GWh	Jun 2013	Dec 2023	Solar
MEVS DOT 109	MEVS DOT, LLC	Augusta, ME	1 GWh	Jun 2023	Dec 2023	Solar
MHG Wallingford	Standard Solar	Wallingford, VT	4 GWh	Nov 2019	Dec 2023	Solar
Middlebury College	Middlebury College Biomass	Middlebury, VT	2 GWh	Dec 1979	Sep 2024	Wood/Wood Waste Solids : 76.6% Natural Gas : 23.4%
Middlesex 2	Green Mountain Power Corp	Moretown, VT	14 GWh	Dec 1927	Dec 2023	Water
Middleton Solar Park	HG Solar Development, LLC	Middleton, MA	7 GWh	May 2018	Dec 2023	Solar
Middletown	Middletown Power LLC	Middletown, CT	170 GWh	Sep 1958	Dec 2023	Natural Gas : 79.3% Residual Fuel Oil : 20.7%
Milford Hydro Station	Brookfield Black Bear Hydro, LLC	Milford, ME	53 GWh	Jun 1941	Dec 2023	Water
Milford Power LP	Milford Power LLC	Milford, MA	210 GWh	Feb 1993	Dec 2023	Natural Gas
Milford Power Project	Milford Power Co LLC	Milford, CT	4 TWh	Jan 2004	Sep 2024	Natural Gas
Millbury Solar	Evergreen Wind, LLC	Millbury, MA	5 GWh	Mar 2014	Dec 2023	Solar
Millennium Power	Millennium Power Company, LLC	Charlton, MA	711 GWh	Mar 2001	Sep 2024	Natural Gas
Millstone	Dominion Energy Nuclear Conn Inc	Waterford, CT	16 TWh	Nov 1975	Sep 2024	Nuclear
Milo CSG	Milo CSG, LLC	Milo, ME	6 GWh	Jan 2022	Dec 2023	Solar
Milo PV - BD Solar 1 LLC	BD Solar 1 LLC	Milo, ME	25 GWh	May 2021	Dec 2023	Solar
Milton	Green Mountain Power Corp	Milton, VT	48 GWh	Jan 1929	Dec 2023	Water
Milton Hydro	SFR Hydro Cor	Milton, NH	8 GWh	Dec 1913	Dec 2023	Water
Mine Falls Generating Station	City of Nashua, NH	Nashua, NH	20 GWh	Nov 1985	Dec 2023	Water
MM Taunton Energy	MM Taunton Energy LLC	Taunton, MA	8 GWh	Aug 1997	Dec 2023	Landfill Gas
MMWAC Resource Recovery Facility	Maine Waste to Energy	Auburn, ME	10 GWh	May 1992	Sep 2024	Non-biogenic Municipal Solid Waste : 54.3% Biogenic Municipal Solid Waste : 44.4% Natural Gas : 1.3%
Monmouth	Maine DG Solar Monmouth, LLC	Monmouth, ME	8 GWh	Feb 2022	Dec 2023	Solar
Monson Solar	Altus Power America Management, LLC	Monson, MA	4 GWh	Jun 2014	Dec 2023	Solar
Monson Solar, LLC	Monson Solar, LLC	Monson, MA	3 GWh	Jul 2017	Dec 2023	Solar
Montague Road Solar	Montague Road Solar, LLC	Amherst, MA	4 GWh	Nov 2019	Dec 2023	Solar
Montague Site 36-Grosolar	NSTAR Electric Company	Millers Falls, MA	6 GWh	Sep 2018	Sep 2024	Solar
Montville Station	NRG Montville Operations Inc	Uncasville, CT	36 GWh	Dec 1953	Dec 2023	Residual Fuel Oil : 65.3% Natural Gas : 33.4% Distillate Fuel Oil : 1.3%
Moretown	EPP Renewable Energy	Waterbury, VT	5 GWh	Nov 2008	Dec 2023	Landfill Gas
Moretown Generating Station	Moretown Hydroelectric LLC	Moretown, VT	3 GWh	Dec 1988	Dec 2023	Water
Morin Solar 2013 LLC	CVI CleanCapital Solar 6	Warren, MA	5 GWh	Nov 2013	Dec 2023	Solar
Morrisville	Village of Morrisville - (VT)	Morrisville, VT	6 GWh	Jul 1924	Dec 2023	Water
Mt. Tom Solar Project Hybrid	Mt. Tom Solar, LLC	Holyoke, MA	5 GWh	Dec 2016	Dec 2023	Solar
Mt Wachusett Community College	Mt Wachusett Community College	Gardner, MA	4 GWh	Feb 2011	Sep 2024	Wind
Mystic Generating Station	Constellation Mystic Power LLC	Charlestown, MA	2 TWh	May 1969	Mar 2024	Natural Gas
Naples	Naples Casco Solar 1, LLC	Naples, ME	2 GWh	Nov 2021	Dec 2023	Solar
Nashua Plant	EPP Renewable Energy	Nashua, NH	14 GWh	Mar 1996	Dec 2023	Landfill Gas
Natick Mall	Natick Mall	Natick, MA	3 GWh	Sep 2018	Dec 2023	Solar
Nationwide	Nationwide Solar Energy LLC	Lancaster, MA	4 GWh	May 2021	Dec 2023	Solar
Nautilus Goat Island Solar LLC (CSG)	Nautilus Solar Solutions	Burrillville, RI	4 GWh	Jul 2019	Dec 2023	Solar
Naval Sub Base New London Fuel Cell	Groton Station Fuel Cell, LLC	Groton, CT	34 GWh	Nov 2022	Dec 2023	Natural Gas
NBC Field's Point Wind Farm	Narragansett Bay Commission	Providence, RI	5 GWh	Sep 2012	Sep 2024	Wind
NE Renewable Fitchburg, LLC	NE Renewable Fitchburg, LLC	Westminster, MA	36 GWh	Jul 1992	Dec 2023	Wood/Wood Waste Solids : 97.6% Natural Gas : 2.4%
NE Renewable Springfield, LLC	NE Renewable Springfield, LLC	Springfield, NH	32 GWh	Nov 1987	Dec 2023	Wood/Wood Waste Solids
NE Renewable Whitefield, LLC	NE Renewable Whitefield, LLC	Whitefield, NH	13 GWh	Feb 1988	Dec 2023	Wood/Wood Waste Solids

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