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	102.8 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 \| 57.6% Nuclear \| 25% Water \| 7.7% Other Fuel \| 4.6% 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
Cabot Holyoke	City of Holyoke Gas and Electric Dept.	Holyoke, MA	6 GWh	Dec 1892	Dec 2023	Water
DG Dighton LLC CSG	DG Dighton, LLC	Dighton, MA	6 GWh	Jun 2017	Dec 2023	Solar
East Barnet	Green Mountain Power Corp	Barnet, VT	6 GWh	Aug 1984	Dec 2023	Water
Milo CSG	Milo CSG, LLC	Milo, ME	6 GWh	Jan 2022	Dec 2023	Solar
Kearsarge SKSC1 LLC	Kearsarge SKSC1 LLC	South Kingstown, RI	6 GWh	Sep 2018	Dec 2023	Solar
Richmond NMCA	AES Distributed Energy	Wood River Junction, RI	6 GWh	Nov 2018	Aug 2024	Solar
West Brookfield Solar - Gilbertsville Rd (CSG)	Nautilus Solar Solutions	West Brookfield, MA	6 GWh	May 2017	Dec 2023	Solar
Harwich Landfill	Clean Focus Yield, LLC	Harwich, MA	6 GWh	Jul 2014	Dec 2023	Solar
WED Green Hill, LLC	WED Green Hill, LLC	Johnston, RI	6 GWh	Dec 2018	Aug 2024	Wind
Williams Rd	AES Distributed Energy	Ransomville, NY	6 GWh	Aug 2021	Dec 2023	Solar
Randolph	Altus Power America Management, LLC	Randolph, MA	6 GWh	Oct 2017	Dec 2023	Solar
Knapp West(CSG)	AES Distributed Energy	Akron, NY	6 GWh	Nov 2021	Dec 2023	Solar
WED Plainfield II, LLC	WED Plainfield II, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2023	Wind
EDF Lancaster	CleanCapital Holdings	Lancaster, MA	6 GWh	Jun 2014	Dec 2023	Solar
Palmer	AES Distributed Energy	Palmer, MA	6 GWh	Sep 2019	Dec 2023	Solar
GSPP Terrawatt Westfield LLC CSG	Green Street Power Partners	Westfield, MA	6 GWh	Jan 2019	Dec 2023	Solar
Bird Machine Solar Farm	Bird Machine Solar Farm, LLC	South Walpole, MA	6 GWh	Jul 2017	Dec 2023	Solar
International Paper Riley Hydro	Eagle Creek Renewable Energy, LLC	Jay, ME	6 GWh	Nov 1981	Dec 2023	Water
Acushnet AD Makepeace	CleanCapital Holdings	Wareham, MA	6 GWh	Jun 2012	Dec 2023	Solar
WED Plainfield III, LLC	WED Plainfield III, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2023	Wind
BWC Rams Horn Channel LLC	Navisun LLC	Beverly, MA	6 GWh	Nov 2020	Dec 2023	Solar
Water Street Solar	AES Distributed Energy	Randolph, ME	6 GWh	Nov 2022	Dec 2023	Solar
Williamsburg	AES Distributed Energy	Goshen, MA	6 GWh	Jun 2019	Dec 2023	Solar
Maple(CSG)	Maple Street Solar 1, LLC	Bellingham, MA	6 GWh	Oct 2021	Dec 2023	Solar
Kearsarge Ludlow LLC	Kearsarge Ludlow LLC	Ludlow, MA	6 GWh	Nov 2020	Dec 2023	Solar
GD Johnson Scituate I, LLC	GD Johnson Scituate I, LLC	Cranston, RI	6 GWh	Nov 2021	Dec 2023	Solar
East Longmeadow Solar PV	NSTAR Electric Company	East Longmeadow, MA	6 GWh	Sep 2019	Dec 2023	Solar
Fryeburg	Nautilus Solar Solutions	Fryeburg, ME	6 GWh	Apr 2023	Dec 2023	Solar
Pittsfield Hydro	KEI (Maine) Power Management (II) LLC	Burnham, ME	6 GWh	Jun 1986	Dec 2023	Water
Kearsarge SKSC2 LLC	Kearsarge SKSC2 LLC	South Kingstown, RI	6 GWh	Sep 2018	Dec 2023	Solar
Fox Island Wind LLC	Fox Island Wind LLC	Vinalhaven, ME	6 GWh	Oct 2009	Dec 2023	Wind
WEB Brookfield	WEB Brookfield Solar LLC	Brookfield, MA	6 GWh	Nov 2021	Dec 2023	Solar
Wilbraham	BWC East Brook, LLC	Wilbraham, MA	6 GWh	Nov 2020	Dec 2023	Solar
Montague Site 36-Grosolar	NSTAR Electric Company	Millers Falls, MA	6 GWh	Sep 2018	Aug 2024	Solar
Merrill Road Solar	NextGrid Mangrove, LLC	Lewiston, ME	6 GWh	Feb 2022	Dec 2023	Solar
Hudson	Captona Hudson LLC	Hudson, MA	6 GWh	Apr 2017	Dec 2023	Solar
Shaffer	CD US Solar MT3, LLC	Billerica, MA	6 GWh	Aug 2014	Dec 2023	Solar
Granby Solar, LLC CSG	Granby Solar, LLC	Granby, MA	6 GWh	Jun 2021	Dec 2023	Solar
Deerfield CSG Solar	MN8 Energy LLC	Deerfield, MA	6 GWh	Nov 2017	Dec 2023	Solar
Morrisville	Village of Morrisville - (VT)	Morrisville, VT	6 GWh	Jul 1924	Dec 2023	Water
Kearsarge Southwick LLC	Kearsarge Solar LLC	Southwick, MA	6 GWh	Feb 2015	Dec 2023	Solar
Washington WS01	Nautilus Solar Solutions	Washington, ME	6 GWh	May 2022	Dec 2023	Solar
Hatfield Solar PV	NSTAR Electric Company	Hatfield, MA	6 GWh	Nov 2018	Dec 2023	Solar
Partridgeville Hybrid CSG	Partridgeville Road Solar 1, LLC	Athol, MA	6 GWh	Dec 2019	Dec 2023	Solar
Quittacas Pond Solar	Consolidated Edison Solutions Inc.	Rochester, MA	5 GWh	Nov 2013	Dec 2023	Solar
Brook Street Solar 1 CSG	Brook Street Solar 1, LLC	Plympton, MA	5 GWh	Jul 2017	Dec 2023	Solar
Pumpkin Hill	KEI (Maine) Power Management (II) LLC	Lowell, ME	5 GWh	Feb 1987	Dec 2023	Water
Charlton Solar I CSG	Charlton Solar I, LLC	Charlton, MA	5 GWh	Nov 2014	Dec 2023	Solar
New Milford Gas Recovery	WM Renewable Energy LLC	New Milford, CT	5 GWh	Apr 2008	Dec 2023	Landfill Gas
IOS - MEW Phase 1	IGS ORIX Solar I, LLC	Madison, ME	5 GWh	Dec 2016	Dec 2023	Solar
Oak Street Solar	Citizens Enterprises Corporation	Springfield, MA	5 GWh	Nov 2019	Dec 2023	Solar
ENGIE 2019 ProjectCo-MA1, LLC	ENGIE 2019 ProjectCo MA-1, LLC	Agawam, MA	5 GWh	Feb 2021	Dec 2023	Solar
Lenox Renewables	Lenox Renewables, LLC	Canastota, NY	5 GWh	Aug 2021	Dec 2023	Solar
Cosgrove Intake and Power Station	Massachusetts Water Res Auth	Clinton, MA	5 GWh	Dec 1968	Dec 2023	Water
Brookwood Drive Community Solar	AES Distributed Energy	Westport, MA	5 GWh	Jul 2022	Dec 2023	Solar
Mt. Tom Solar Project Hybrid	Mt. Tom Solar, LLC	Holyoke, MA	5 GWh	Dec 2016	Dec 2023	Solar
Franklin 2	CD US Solar MT 2 LLC	Franklin, MA	5 GWh	Nov 2013	Dec 2023	Solar
Barnstable Landfill	Clean Focus Yield, LLC	Marstons Mills, MA	5 GWh	Aug 2014	Dec 2023	Solar
GSPP Boxborough Littleton (MA)	GSPP Boxborough Littleton, LLC	Boxborough, MA	5 GWh	Dec 2018	Dec 2023	Solar
NBC Field's Point Wind Farm	Narragansett Bay Commission	Providence, RI	5 GWh	Sep 2012	Aug 2024	Wind
Amherst College Co Gen	Amherst College	Amherst, MA	5 GWh	Oct 2006	Dec 2023	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Nextsun Energy Littleton	Greenbacker Renewable Energy Corporation	Littleton, MA	5 GWh	Sep 2013	Dec 2023	Solar
Messalonskee 5	Messalonskee Stream Hydro LLC	Waterville, ME	5 GWh	Dec 1934	Dec 2023	Water
Leicester One MA Solar LLC	CVI CleanCapital Solar 1 LLC	Leicester, MA	5 GWh	Dec 2014	Dec 2023	Solar
Morin Solar 2013 LLC	CVI CleanCapital Solar 6	Warren, MA	5 GWh	Nov 2013	Dec 2023	Solar
IBM Southbury	Bloom Energy	Southbury, CT	5 GWh	Oct 2014	Dec 2022	Natural Gas
Thundermist Hydro	City of Woonsocket	Providence, RI	5 GWh	May 1981	Sep 2023	Water
Kearsarge Amesbury Hybrid	Kearsarge Amesbury LLC	Amesbury, MA	5 GWh	Nov 2019	Dec 2023	Solar
3104 Batavia Solar	3104 Batavia Solar, LLC	Batavia, NY	5 GWh	Feb 2021	Dec 2023	Solar
Hampden Solar PV	NSTAR Electric Company	Hampden, MA	5 GWh	Oct 2019	Dec 2023	Solar
Burlington Solar 1	DG Connecticut III, LLC	Burlington, CT	5 GWh	Jan 2022	Dec 2023	Solar
Syncarpha Northampton Hybrid CSG	Syncarpha Northampton, LLC	Northampton, MA	5 GWh	Nov 2020	Dec 2023	Solar
Marshfield PV	Terraform Arcadia	Marshfield, MA	5 GWh	Nov 2013	Dec 2023	Solar
WED Coventry Seven, LLC	WED Coventry Seven, LLC	Coventry, RI	5 GWh	Nov 2020	Dec 2023	Solar
205 Sturbridge A	Altus Power America Management, LLC	Brimfield, MA	5 GWh	May 2014	Dec 2023	Solar
Fairhaven MA 2	Consolidated Edison Development Inc.	Fairhaven, MA	5 GWh	Aug 2021	Dec 2023	Solar
Livermore Falls CSG	Livermore Falls CSG, LLC	Livermore Falls, ME	5 GWh	Apr 2022	Dec 2023	Solar
Chester Solar Farm	Kearsarge Solar LLC	Chester, MA	5 GWh	May 2014	Dec 2023	Solar
Somersworth Lower Great Dam	Green Mountain Power Corp	Somersworth, NH	5 GWh	Jun 1985	Dec 2023	Water
CED Chicopee Solar	Consolidated Edison Development Inc.	Chicopee, MA	5 GWh	Jun 2017	Dec 2023	Solar
Brockelman	Integrys MA Solar, LLC	Lancaster, MA	5 GWh	Oct 2013	Dec 2023	Solar
TES Rowtier	SkyHigh 2 Solar	Westminster, MA	5 GWh	Mar 2021	Dec 2023	Solar
Hampshire College Hybrid	Tesla Inc.	Amherst, MA	5 GWh	Apr 2017	Dec 2023	Solar
Salmon Falls	Green Mountain Power Corp	South Berwick, ME	5 GWh	Jun 1986	Dec 2023	Water
SELCO Community Solar	Massachusetts Mun Wholes Electric Co	Shrewsbury, MA	5 GWh	May 2018	Dec 2023	Solar
CMEEC - Polaris Park Solar Hybrid	Tesla Inc.	Gordon, CT	5 GWh	Jul 2017	Dec 2023	Solar
Dept of Corrections NCCI Wind	Dept of Corrections NCCI Wind	Gardner, MA	5 GWh	Oct 2013	Aug 2024	Wind
Tolland Solar NG LLC	NuGen Capital Management	Tolland, MA	5 GWh	Sep 2014	Dec 2023	Solar
BWC Wading River One, Two, Three CSG	Ameresco BWC Wading River LLC	Mendon, MA	5 GWh	Oct 2017	Dec 2023	Solar
Spring Street Solar 1 CSG	Spring Street Solar 1, LLC	Carver, MA	5 GWh	Feb 2017	Dec 2023	Solar
East Acres Solar NG, LLC	NuGen Capital Management	Pittsfield, MA	5 GWh	Mar 2017	Dec 2023	Solar
Kearsarge Bellingham PV	Kearsarge Bellingham LLC	Bellingham, MA	5 GWh	Nov 2016	Dec 2023	Solar
Hadley 3 Solar (North)	Hadley 3 Solar, LLC (North)	Hadley, MA	5 GWh	Nov 2019	Dec 2023	Solar
Hadley 3 Solar (South)	Hadley 3 Solar, LLC (South)	Hadley, MA	5 GWh	Nov 2019	Dec 2023	Solar
Moretown	EPP Renewable Energy	Waterbury, VT	5 GWh	Nov 2008	Dec 2023	Landfill Gas
WED Plainfield, LLC	WED Plainfield, LLC	Johnston, RI	5 GWh	Dec 2018	Dec 2023	Wind
Roger Williams - Melville at Portsmouth	Luminace Solar Rhode Island, LLC	Portsmouth, RI	5 GWh	Feb 2021	Dec 2023	Solar
Taftville	FirstLight Power Resources Services LLC	Taftville, CT	5 GWh	Dec 1905	Dec 2023	Water
BWC Beech Ridge Brook, LLC	Navisun LLC	Scarborough, ME	5 GWh	Apr 2023	Dec 2023	Solar
Webb Road Solar	NextGrid Mastic, LLC	Waterville, ME	5 GWh	Aug 2022	Dec 2023	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	894.0 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	63.3 TWh	554
#51	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	33.2 TWh	20
#12	New York Independent System Operator	130.0 TWh	1,100
#1	PJM Interconnection, LLC	843.8 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	191.5 TWh	1,943
#9	Tennessee Valley Authority	157.5 TWh	170
#10	Florida Power & Light Co.	147.7 TWh	159
#12	New York Independent System Operator	130.0 TWh	1,100
#13	Duke Energy Carolinas	110.9 TWh	556
#15	ISO New England	102.8 TWh	1,487
#16	Bonneville Power Administration	80.0 TWh	158
#17	Duke Energy Progress East	63.3 TWh	554
#18	Salt River Project Agricultural Improvement and Power District	59.0 TWh	45
#19	PacifiCorp East	52.6 TWh	204