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	Jul 2026
Annual Generation	111.1 TWh
Power Plants	1,629
Utilities	833
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 \| 54.9% Nuclear \| 25% Wind \| 5.1% Water \| 4.5% Other Fuel \| 4.4% Solar \| 1.6% Coal \| 0.1%

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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
Coventry Photovoltaic, LLC	Coventry Photovoltaic, LLC	Coventry, VT	3 GWh	Jul 2014	Dec 2025	Solar
Technology Drive Solar	RWE Clean Energy	Brattleboro, VT	3 GWh	Aug 2014	Dec 2025	Solar
Brewster Landfill	Clean Focus Yield, LLC	Brewster, MA	2 GWh	Aug 2014	Dec 2025	Solar
Chatham Landfill	Clean Focus Yield, LLC	Chatham, MA	2 GWh	Aug 2014	Dec 2025	Solar
Barnstable Landfill	Clean Focus Yield, LLC	Marstons Mills, MA	5 GWh	Aug 2014	Dec 2025	Solar
Dennis Landfill	Clean Focus Yield, LLC	Dennis, MA	8 GWh	Aug 2014	Dec 2025	Solar
Shaffer	CD US Solar MT3, LLC	Billerica, MA	6 GWh	Aug 2014	Dec 2025	Solar
Mashpee Landfill Solar	Nautilus Solar Solutions	Mashpee, MA	2 GWh	Aug 2014	Dec 2025	Solar
Whitcomb Solar Farm	ERWR Whitcomb Farm Solar LLC	Essex Junction, VT	3 GWh	Sep 2014	Dec 2025	Solar
Tolland Solar NG LLC	NuGen Capital Management	Tolland, MA	5 GWh	Sep 2014	Dec 2025	Solar
Barton Solar Farm	Barton Solar, LLC	Barton, VT	2 GWh	Oct 2014	Dec 2025	Solar
Chester Power Partners	Altus Power America Management, LLC	North Chester, VT	2 GWh	Oct 2014	Dec 2025	Solar
Advance Stores Company, Inc	Tesla Inc.	Enfield, CT	1 GWh	Oct 2014	Mar 2025	Solar
Saddleback Ridge Wind Farm	CPV Saddleback Ridge Wind, LLC	Carthage, ME	90 GWh	Nov 2014	Dec 2025	Wind
Charlton Solar I CSG	Charlton Solar I, LLC	Charlton, MA	5 GWh	Nov 2014	Dec 2025	Solar
Main Street Solar Project	Greenbacker Renewable Energy Corporation	Rutland, VT	2 GWh	Nov 2014	Dec 2025	Solar
Templeton	Sunny Templeton, LLC	Templeton, MA	2 GWh	Nov 2014	Dec 2025	Solar
Bourne (MA) - Holliston I	NVT LICENSES, LLC	Holliston, MA	3 GWh	Nov 2014	Dec 2025	Solar
Braintree Landfill Solar	Ameresco, Inc - Braintree	Braintree, MA	1 GWh	Nov 2014	Dec 2025	Solar
Park St	Greenbacker Renewable Energy Corporation	Rutland, VT	2 GWh	Nov 2014	Dec 2025	Solar
Leicester One MA Solar LLC	CVI CleanCapital Solar 1 LLC	Leicester, MA	5 GWh	Dec 2014	Dec 2025	Solar
Twiss Street Solar	Citizens Enterprises Corporation	Westfield, MA	2 GWh	Dec 2014	Mar 2025	Solar
Chicopee River Solar	Citizens Enterprises Corporation	Springfield, MA	3 GWh	Dec 2014	Dec 2025	Solar
Chicopee Granby Road Solar	Citizens Enterprises Corporation	Chicopee, MA	2 GWh	Dec 2014	Dec 2025	Solar
Natick Mall	Natick Mall	Natick, MA	4 GWh	Dec 2014	Dec 2024	Solar
Freetown Solar	Mass Solar, LLC	Freetown, MA	6 GWh	Feb 2015	Dec 2025	Solar
Braley Road 2	Mass Solar, LLC	Freetown, MA	4 GWh	Feb 2015	Dec 2025	Solar
BlueWave Capital - Grafton (SREC II)	TerraForm Solar XVII, LLC	Grafton, MA	2 GWh	Feb 2015	Dec 2025	Solar
Stafford Hill Solar Hybrid	Green Mountain Power Corp	Rutland, VT	390 MWh	Feb 2015	May 2026	Solar
Kearsarge Southwick LLC	Kearsarge Solar LLC	Southwick, MA	5 GWh	Feb 2015	Dec 2025	Solar
UB Fuel Cell	UB Fuel Cell	Bridgeport, CT	10 GWh	Mar 2015	Dec 2025	Natural Gas
Leominster	Syncarpha Massachusetts, LLC	Leominster, MA	3 GWh	Apr 2015	Dec 2025	Solar
Fisher Road Solar	Fisher Road Solar I, LLC	Dartmouth, MA	7 GWh	Apr 2015	Dec 2025	Solar
Johnston Solar	Concord New Energy	Town of Johnston, RI	2 GWh	Jun 2015	Dec 2025	Solar
Hardwick-Athol & Eagle Hill	Madison Energy Investments LLC	Hardwick, MA	2 GWh	Jun 2015	Sep 2025	Solar
Hampden	Altus Power America Management, LLC	Hampden, MA	5 GWh	Jun 2015	Dec 2025	Solar
Holliston Solar CSG	MN8 Energy LLC	Holliston, MA	1 GWh	Jun 2015	Dec 2025	Solar
Downing Parkway Solar	Downing Parkway Solar LLC	Pittsfield, MA	3 GWh	Jun 2015	Dec 2025	Solar
UI RCP New Haven Fuel Cell	United Illuminating Co	New Haven, CT	21 GWh	Jul 2015	May 2026	Natural Gas
Bridgewater Solar CSG	MN8 Energy LLC	Bridgewater, MA	4 GWh	Jul 2015	Dec 2025	Solar
Halifax Solar	NuGen Capital Management	Halifax, MA	4 GWh	Jul 2015	Dec 2025	Solar
Oakfield Wind Project	Onward Energy	City of Oakfield, ME	340 GWh	Sep 2015	May 2026	Wind
North Adams Landfill	Syncarpha North Adams, LLC	North Adams, MA	3 GWh	Sep 2015	Dec 2025	Solar
115 G Fisher	Greenbacker Renewable Energy Corporation	Middleborough, MA	2 GWh	Sep 2015	Dec 2025	Solar
RGS-Rutland VNM SREC II Project (MA)	TerraForm Solar XVII, LLC	Rutland, MA	3 GWh	Oct 2015	Dec 2025	Solar
UI RCP Bridgeport Seaside	United Illuminating Co	Bridgeport, CT	18 GWh	Oct 2015	May 2026	Natural Gas : 84.7% Solar : 15.3%
Brookside	Terraform Arcadia	North Smithfield, RI	969 MWh	Oct 2015	Nov 2025	Solar
Wind Colebrook South	Wind Colebrook South	Colebrook, CT	11 GWh	Oct 2015	May 2026	Wind
Wilmington Solar	MN8 Energy LLC	Wilmington, MA	2 GWh	Oct 2015	Dec 2025	Solar
Bridgewater Complex Co-Generation Plant	Massachusetts Department of Correction	Bridgewater, MA	1 GWh	Oct 2015	Dec 2025	Natural Gas
Spring Hill Road	AES Distributed Energy	Barre, MA	243 MWh	Nov 2015	May 2026	Solar
Syncarpha Palmer, LLC	Syncarpha Palmer, LLC	Palmer, MA	7 GWh	Nov 2015	Dec 2025	Solar
Federal Road Solar 1, LLC CSG	Federal Road Solar 1, LLC	South Carver, MA	8 GWh	Nov 2015	Dec 2025	Solar
BWC Swan Pond River CSG	BWC Swan Pond River, LLC	Rehoboth, MA	3 GWh	Nov 2015	Dec 2025	Solar
West Groton CHP	Hollingsworth & Vose Co West Groton	Groton, MA	22 GWh	Nov 2015	Dec 2024	Natural Gas
Belchertown	Altus Power America Management, LLC	Belchertown, MA	1 GWh	Nov 2015	Dec 2025	Solar
Nexamp Peak CSG	Nexamp Peak, LLC	Hancock, MA	2 GWh	Nov 2015	Dec 2025	Solar
154 D Fisher	Greenbacker Renewable Energy Corporation	Middleborough, MA	2 GWh	Nov 2015	Dec 2025	Solar
Jericho Power	Jericho Power LLC	Berlin, NH	23 GWh	Dec 2015	May 2026	Wind
West Brookfield Solar, LLC	CVI CleanCapital Solar 7	West Brookfield, MA	2 GWh	Dec 2015	Dec 2025	Solar
Old Wardour Solar	NuGen Capital Management	East Brookfield, MA	7 GWh	Dec 2015	Dec 2025	Solar
Vuelta Solar	NuGen Capital Management	East Brookfield, MA	7 GWh	Dec 2015	Dec 2025	Solar
UDR Glastonbury Fuel Cell	UIL Distributed Resources, LLC	Glastonbury, CT	16 GWh	Jan 2016	Dec 2025	Natural Gas
Town of Needham VNEM CSG	Tesla Inc.	Needham, MA	4 GWh	Jan 2016	Dec 2025	Solar
Williamsburg Solar LLC VNEM CSG	Tesla Inc.	Haydenville, MA	1 GWh	Jan 2016	Dec 2025	Solar
Southbridge Solar	AES Distributed Energy	Southbridge, MA	2 GWh	Feb 2016	Mar 2026	Solar
MDFA Devens-Saratoga	Terraform Arcadia	Devens, MA	3 GWh	Feb 2016	Dec 2025	Solar
Weston Landfill Solar	Ameresco, Inc - Weston	Weston, MA	3 GWh	Feb 2016	Dec 2025	Solar
Ball Mountain Hydro	Eagle Creek Renewable Energy, LLC	Jamaica, VT	995 MWh	Mar 2016	Dec 2025	Water
Onset East Community Solar Facility	Kearsarge Onset LLC	Wareham, MA	2 GWh	Mar 2016	Dec 2025	Solar
Onset West Community Solar Facility	Kearsarge Onset LLC	Wareham, MA	2 GWh	Mar 2016	Dec 2025	Solar
Shuman Solar	NuGen Capital Management	Stoughton, MA	2 GWh	Mar 2016	Dec 2025	Solar
Sudbury Solar	Ecos Energy LLC	Sudbury, VT	2 GWh	Apr 2016	Dec 2025	Solar
Rail Trail	Altus Power America Management, LLC	Great Barrington, MA	3 GWh	Apr 2016	Dec 2025	Solar
Rising Paper	Altus Power America Management, LLC	Great Barrington, MA	3 GWh	Apr 2016	Dec 2025	Solar
GELD Solar Farm	Ameresco, Inc - GELD	Groton, MA	3 GWh	May 2016	Dec 2025	Solar
Brookfield Wire Company	Dynamic Energy Solutions, LLC	Brookfield, MA	2 GWh	May 2016	Dec 2025	Solar
Passadumkeag Windpark LLC	Southern Power Co	Greenbush, ME	138 GWh	Jun 2016	May 2026	Wind
Stafford MS Ground Mount Community Solar	Town of Stafford - (CT)	Stafford, CT	3 GWh	Jun 2016	Dec 2025	Solar
WED Coventry 2	WED Coventry Two, LLC	Coventry, RI	9 GWh	Jul 2016	May 2026	Wind
WED Coventry 3	WED Coventry Three, LLC	Coventry, RI	3 GWh	Jul 2016	Dec 2025	Wind
WED Coventry 4	WED Coventry Four, LLC	Coventry, RI	3 GWh	Jul 2016	Dec 2025	Wind
WED Coventry 6	Greenbacker Renewable Energy Corporation	Coventry, RI	8 GWh	Jul 2016	May 2026	Wind
Future Generation Wind	RWE Clean Energy	Plymouth, MA	12 GWh	Jul 2016	Nov 2025	Wind
CED Westfield Solar, LLC	RWE Clean Energy	Westfield, MA	3 GWh	Jul 2016	Dec 2025	Solar
Shirley Water	Altus Power America Management, LLC	Shirley, MA	3 GWh	Jul 2016	Dec 2025	Solar
WED Portsmouth One, LLC	Greenbacker Renewable Energy Corporation	Portsmouth, RI	5 GWh	Jul 2016	Dec 2025	Wind
Nebraska Valley Solar Farm	Town of Stowe - (VT)	Stowe, VT	1 GWh	Jul 2016	Dec 2025	Solar
Foster Solar	Foster Solar, LLC	North Scituate, RI	2 GWh	Jul 2016	Dec 2025	Solar
Carver MA 1 Community Solar	Navisun LLC	Carver, MA	3 GWh	Aug 2016	Dec 2025	Solar
Wareham MA 1 Community Solar	Navisun LLC	Wareham, MA	3 GWh	Aug 2016	Dec 2025	Solar
Westport MA 1 Community Solar	Navisun LLC	Westport, MA	2 GWh	Aug 2016	Dec 2025	Solar
Westport MA 2 Community Solar	Navisun LLC	Westport, MA	2 GWh	Aug 2016	Dec 2025	Solar
WED Coventry 1	WED Coventry One, LLC	Coventry, RI	3 GWh	Sep 2016	Dec 2025	Wind
Pfizer Groton Fuel Cell	Groton Fuel Cell 1 LLC	Groton, CT	30 GWh	Sep 2016	Dec 2024	Natural Gas
Athens Energy	Athens Energy, LLC	Athens, ME	56 GWh	Sep 2016	Dec 2025	Wood/Wood Waste Solids
GMP Solar - Richmond	Green Mountain Power Corp	Richmond, VT	3 GWh	Sep 2016	May 2026	Solar
Curtis Hill Solar CSG	CCC Solar Holdings LLC	Charlton, MA	3 GWh	Sep 2016	Dec 2024	Solar
Depot Hill Solar CSG	CCC Solar Holdings LLC	Charlton, MA	3 GWh	Sep 2016	Dec 2025	Solar
Grafton PV	MN8 Energy LLC	Grafton, MA	4 GWh	Sep 2016	Dec 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	442.5 GWh	4
#24	Dominion Energy South Carolina, Inc.	25.3 TWh	83
#13	Duke Energy Carolinas	112.6 TWh	577
#17	Duke Energy Progress East	64.5 TWh	565
#50	Duke Energy Progress West	4.5 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	33.9 TWh	25
#12	New York Independent System Operator	134.3 TWh	1,299
#1	PJM Interconnection, LLC	882.8 TWh	2,652
#31	South Carolina Public Service Authority	18.5 TWh	35
#59	Southeastern Power Administration	1.3 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	169.4 TWh	2,135
#9	Tennessee Valley Authority	163.4 TWh	207
#10	Florida Power & Light Co.	152.2 TWh	187
#12	New York Independent System Operator	134.3 TWh	1,299
#13	Duke Energy Carolinas	112.6 TWh	577
#15	ISO New England	111.1 TWh	1,629
#16	Bonneville Power Administration	91.6 TWh	167
#17	Duke Energy Progress East	64.5 TWh	565
#18	PacifiCorp East	60.9 TWh	222
#19	Salt River Project Agricultural Improvement and Power District	60.3 TWh	49