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	Oct 2026
Annual Generation	112.2 TWh
Power Plants	1,667
Utilities	846
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% Nuclear \| 25.3% Wind \| 5.7% Water \| 4.6% Other Fuel \| 4.5% Solar \| 1.6% Coal \| 0%

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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
Katama Farm	Clean Focus Yield, LLC	Edgartown, MA	2 GWh	May 2014	Dec 2025	Solar
Nunnepog	Clean Focus Yield, LLC	Edgartown, MA	2 GWh	May 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
Lepomis PV Energy LLC	CleanCapital Holdings	Plymouth, MA	8 GWh	May 2014	Dec 2025	Solar
Rockland Solar CSG	MN8 Energy LLC	Rockland, MA	2 GWh	Nov 2013	Dec 2025	Solar
Acushnet-Braley Road 1	CleanCapital Holdings	Freetown, MA	3 GWh	Dec 2012	Dec 2025	Solar
Acushnet- High Hill	CleanCapital Holdings	Dartmouth, MA	3 GWh	Feb 2013	Dec 2025	Solar
Dartmouth Landfill	CleanCapital Holdings	Dartmouth, MA	2 GWh	Jan 2013	Dec 2025	Solar
Easton Landfill	CleanCapital Holdings	Easton, MA	3 GWh	Sep 2013	Dec 2025	Solar
Ludlow Landfill	CleanCapital Holdings	Ludlow, MA	3 GWh	Jul 2013	Dec 2025	Solar
Methuen Landfill	CleanCapital Holdings	Methuen, MA	2 GWh	Jun 2013	Dec 2025	Solar
Plymouth Site 1	CleanCapital Holdings	Plympton, MA	7 GWh	Sep 2013	Dec 2025	Solar
EDF Lancaster	CleanCapital Holdings	Lancaster, MA	5 GWh	Jun 2014	Dec 2025	Solar
Franklin 1	CD US Solar MT 2 LLC	Wrentham, MA	4 GWh	Oct 2013	Dec 2025	Solar
Franklin 2	CD US Solar MT 2 LLC	Franklin, MA	6 GWh	Nov 2013	Dec 2025	Solar
Brockelman	Integrys MA Solar, LLC	Lancaster, MA	5 GWh	Oct 2013	Dec 2025	Solar
Beverly	Integrys MA Solar, LLC	Beverly, MA	3 GWh	Apr 2014	Dec 2025	Solar
WED NK Green	WED NK Green LLC	North Kingstown, RI	3 GWh	Feb 2012	Dec 2025	Wind
WED Coventry 1	WED Coventry One, LLC	Coventry, RI	3 GWh	Sep 2016	Dec 2025	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 5	Greenbacker Renewable Energy Corporation	Coventry, RI	3 GWh	Feb 2017	Dec 2025	Wind
Devens	Altus Power America Management, LLC	Shirley, MA	5 GWh	May 2014	Dec 2025	Solar
Browne Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2025	Solar
Indian Hill Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2025	Solar
State Street Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2025	Solar
Westborough Solar LLC	SunRay Power LLC	Westborough, MA	2 GWh	Mar 2014	Dec 2025	Solar
True North	CD US Solar MT1 LLC	Salisbury, MA	6 GWh	Jul 2012	Dec 2025	Solar
Grafton Solar	CD US Solar MT 2 LLC	Grafton, MA	2 GWh	Sep 2013	Dec 2025	Solar
Shaffer	CD US Solar MT3, LLC	Billerica, MA	6 GWh	Aug 2014	Dec 2025	Solar
Stillwater B	Brookfield Black Bear Hydro, LLC	Old Town, ME	9 GWh	Aug 2013	Dec 2025	Water
Orono B	Brookfield Black Bear Hydro, LLC	Orono, ME	17 GWh	Oct 2013	Dec 2025	Water
St. Albans SPEED Project	St. Albans Solar Partners, LLC	St. Albans, VT	2 GWh	Nov 2013	Dec 2025	Solar
Ayers Village Solar	Altus Power America Management, LLC	Methuen, MA	3 GWh	May 2014	Dec 2025	Solar
Monson Solar	Altus Power America Management, LLC	Monson, MA	4 GWh	Jun 2014	Dec 2025	Solar
Sullivan Solar	Altus Power America Management, LLC	New Bedford, MA	2 GWh	Jul 2014	Dec 2025	Solar
Winchendon Solar	Altus Power America Management, LLC	Winchendon, MA	3 GWh	Mar 2014	Dec 2025	Solar
KS Solar Six LLC	Kearsarge Solar LLC	Hubbardston, MA	3 GWh	Nov 2013	Dec 2025	Solar
Clarendon Solar Farm	Clarendon Solar Farm, LLC	North Clarendon, VT	3 GWh	Jun 2014	Dec 2025	Solar
Claire Solar Farm	Claire Solar Partners LLC	South Burlington, VT	4 GWh	Jun 2014	Dec 2025	Solar
Hadley Solar NG, LLC	NuGen Capital Management	Hadley, MA	3 GWh	Jun 2014	Dec 2025	Solar
265 Pleasant Solar NG, LLC	NuGen Capital Management	Lunenburg, MA	1 GWh	Jun 2014	Dec 2025	Solar
Acton Solar Landfill	Heliovaas LLC	Acton, MA	475 MWh	Nov 2013	Dec 2025	Solar
Tisbury Landfill Solar	Clean Focus Yield, LLC	Tisbury, MA	2 GWh	Jun 2014	Dec 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
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
Subase Microgrid Project	Connecticut Mun Elec Engy Coop	Groton, CT	30 GWh	Nov 2022	Dec 2025	Natural Gas
Charlotte Solar LLC VT	Altus Power America Management, LLC	Charlotte, VT	3 GWh	Jun 2014	Dec 2025	Solar
Scituate Wind	Scituate Wind LLC	Scituate, MA	3 GWh	Feb 2012	Dec 2025	Wind
Fairhaven Wind	Fairhaven Wind LLC	Fairhaven, MA	3 GWh	Mar 2012	Dec 2025	Wind
Templeton	Sunny Templeton, LLC	Templeton, MA	2 GWh	Nov 2014	Dec 2025	Solar
Barton Solar Farm	Barton Solar, LLC	Barton, VT	2 GWh	Oct 2014	Dec 2025	Solar
Leominster (MA)-South Street-R&D	South Street Solar, LLC	Tewksbury, MA	3 GWh	Nov 2013	Dec 2025	Solar
Bourne (MA) - Holliston I	NVT LICENSES, LLC	Holliston, MA	3 GWh	Nov 2014	Dec 2025	Solar
BlueWave Capital - Grafton (SREC II)	TerraForm Solar XVII, LLC	Grafton, MA	2 GWh	Feb 2015	Dec 2025	Solar
Chester Power Partners	Altus Power America Management, LLC	North Chester, VT	2 GWh	Oct 2014	Dec 2025	Solar
Stetson Road Solar - Barre I	Kearsarge Solar LLC	Barre, MA	2 GWh	Apr 2014	Dec 2025	Solar
Barre II Solar Project	Kearsarge Solar LLC	Barre, MA	2 GWh	Mar 2014	Dec 2025	Solar
Chester Solar Farm	Kearsarge Solar LLC	Chester, MA	6 GWh	May 2014	Dec 2025	Solar
Concord Solar Farm	Kearsarge Solar LLC	Concord, MA	2 GWh	Mar 2014	Dec 2025	Solar
Adams Farm Solar	Altus Power America Management, LLC	Athol, MA	4 GWh	Sep 2013	Dec 2025	Solar
RGS-Rutland VNM SREC II Project (MA)	TerraForm Solar XVII, LLC	Rutland, MA	3 GWh	Oct 2015	Dec 2025	Solar
New Bedford (MA) Plymouth	BWC Origination 4, LLC	Plymouth, MA	7 GWh	Jun 2014	Dec 2025	Solar
Upper Blackstone (MA) Treasure Valley	Nexamp Treasure Valley Solar, LLC	Rutland, MA	6 GWh	Jun 2014	Dec 2025	Solar
Granby LFG	Industrial Power Services Corp.	Granby, MA	2 GWh	Aug 2001	Dec 2025	Landfill Gas
Hunt Farm Solar	Altus Power America Management, LLC	Orange, MA	3 GWh	Aug 2013	Dec 2025	Solar
205 Sturbridge A	Altus Power America Management, LLC	Brimfield, MA	4 GWh	May 2014	Dec 2025	Solar
201 Sturbridge B	Altus Power America Management, LLC	Brimfield, MA	2 GWh	May 2014	Dec 2025	Solar
Johnston Solar	Concord New Energy	Town of Johnston, RI	2 GWh	Jun 2015	Dec 2025	Solar
Lowell Solar Landfill	Heliovaas LLC	Lowell, MA	1 GWh	Nov 2013	Dec 2025	Solar
Hunt Road Solar	Citizens Enterprises Corporation	Amesbury, MA	7 GWh	Nov 2016	Dec 2025	Solar
Mashpee Landfill Solar	Nautilus Solar Solutions	Mashpee, MA	2 GWh	Aug 2014	Dec 2025	Solar
Oxford	CVI CleanCapital Solar 6	Oxford, MA	3 GWh	Jun 2014	Dec 2025	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
Leominster	Syncarpha Massachusetts, LLC	Leominster, MA	3 GWh	Apr 2015	Dec 2025	Solar
North Adams Landfill	Syncarpha North Adams, LLC	North Adams, MA	3 GWh	Sep 2015	Dec 2025	Solar
Fisher Road Solar	Fisher Road Solar I, LLC	Dartmouth, MA	7 GWh	Apr 2015	Dec 2025	Solar
Palmer Landfill	Syncarpha Bondsville, LLC	Palmer, MA	6 GWh	Nov 2016	Dec 2025	Solar
Hewlett-Packard (HP) - Andover, MA	Tesla Inc.	Andover, MA	2 GWh	May 2017	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
Oneida County- DPW	Tesla Inc.	Oriskany, NY	1 GWh	Sep 2017	Dec 2025	Solar
Town of Halfmoon	Tesla Inc.	Waterford, NY	680 MWh	May 2017	Dec 2025	Solar
CMEEC - Bozrah	Tesla Inc.	Bozrah, CT	3 GWh	Nov 2016	Dec 2025	Solar
Conn Mun Electric Energy Coop	Tesla Inc.	Norwich, CT	1 GWh	Nov 2016	Dec 2025	Solar
Orange County Solar Farm (NY)	Tesla Inc.	Goshen, NY	2 GWh	Apr 2017	Dec 2025	Solar
CED Westfield Solar, LLC	RWE Clean Energy	Westfield, MA	3 GWh	Jul 2016	Dec 2025	Solar
West Groton CHP	Hollingsworth & Vose Co West Groton	Groton, MA	21 GWh	Nov 2015	Dec 2025	Natural Gas
Sudbury Solar	Ecos Energy LLC	Sudbury, VT	2 GWh	Apr 2016	Dec 2025	Solar
SJA Solar LLC-Solterra Monastery CSG	SJA Solar, LLC	Spencer, MA	24 GWh	Nov 2016	Dec 2025	Solar
Pfizer Groton Fuel Cell	Groton Fuel Cell 1 LLC	Groton, CT	36 GWh	Sep 2016	Dec 2025	Natural Gas
Pisgah Mountain Wind	Pisgah Mountain, LLC	Clifton, ME	28 GWh	Nov 2016	Dec 2025	Wind
Coventry Photovoltaic, LLC	Coventry Photovoltaic, LLC	Coventry, VT	3 GWh	Jul 2014	Dec 2025	Solar
Fairhaven C CSG	MN8 Energy LLC	Fairhaven, MA	2 GWh	Apr 2017	Dec 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	433.0 GWh	4
#24	Dominion Energy South Carolina, Inc.	26.1 TWh	83
#13	Duke Energy Carolinas	113.4 TWh	578
#17	Duke Energy Progress East	66.2 TWh	574
#50	Duke Energy Progress West	4.6 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#12	New York Independent System Operator	134.1 TWh	1,334
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#28	South Carolina Public Service Authority	19.6 TWh	35
#59	Southeastern Power Administration	1.2 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	168.7 TWh	2,170
#9	Tennessee Valley Authority	166.2 TWh	209
#10	Florida Power & Light Co.	153.0 TWh	188
#12	New York Independent System Operator	134.1 TWh	1,334
#13	Duke Energy Carolinas	113.4 TWh	578
#15	ISO New England	112.2 TWh	1,667
#16	Bonneville Power Administration	91.1 TWh	170
#17	Duke Energy Progress East	66.2 TWh	574
#18	PacifiCorp East	61.4 TWh	223
#19	Salt River Project Agricultural Improvement and Power District	60.5 TWh	51