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
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
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
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
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
West Bridgewater AB CSG	MN8 Energy LLC	West Bridgewater, MA	3 GWh	May 2017	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
Athens Energy	Athens Energy, LLC	Athens, ME	56 GWh	Sep 2016	Dec 2025	Wood/Wood Waste Solids
Onondaga County- Clearwater	Tesla Inc.	Oswego, NY	3 GWh	Jun 2017	Dec 2025	Solar
Greene County Meter #1	Tesla Inc.	Cairo, NY	2 GWh	Jan 2018	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
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
Hampden	Altus Power America Management, LLC	Hampden, MA	5 GWh	Jun 2015	Dec 2025	Solar
Little Bay	Altus Power America Management, LLC	Providence, RI	1 GWh	Feb 2014	Dec 2025	Solar
Shirley Water	Altus Power America Management, LLC	Shirley, MA	3 GWh	Jul 2016	Dec 2025	Solar
Limerick Road Solar Farm	Limerick Road Solar, LLC	Shelburne, VT	3 GWh	Nov 2013	Dec 2025	Solar
158th Fighter Wing Solar Farm	158th Fighter Wing	South Burlington, VT	1 GWh	Aug 2011	Dec 2025	Solar
UI RCP Woodbridge FC	United Illuminating Co	Woodbridge, CT	17 GWh	Nov 2016	Dec 2025	Natural Gas
CMEEC - Rogers Rd Solar	Tesla Inc.	Norwich, CT	2 GWh	Jan 2017	Dec 2025	Solar
CMEEC - Polaris Park Solar Hybrid	Tesla Inc.	Gordon, CT	4 GWh	Jul 2017	Dec 2025	Solar : 99.9%
CMEEC - Navy NE Trident	Tesla Inc.	Groton, CT	1 GWh	May 2017	Dec 2025	Solar
CMEEC - Norwich Stott St Solar Hybrid	Tesla Inc.	Norwich, CT	4 GWh	Nov 2016	Dec 2025	Solar
Morin Solar 2013 LLC	CVI CleanCapital Solar 6	Warren, MA	5 GWh	Nov 2013	Dec 2025	Solar
Brookfield Solar 2013 LLC	CVI CleanCapital Solar 6	North Brookfield, MA	3 GWh	Nov 2013	Dec 2025	Solar
WYM 1250 Palmer LLC	CVI CleanCapital Solar 6	Palmer, MA	1 GWh	Aug 2013	Dec 2025	Solar
Southern Sky Renew Energy Berkley LLC	Southern Sky Renewable Energy Berkley, LLC	Berkley, MA	4 GWh	May 2014	Dec 2025	Solar
Worcester Landfill	City of Worcester DPW - (MA)	Worcester, MA	8 GWh	Apr 2017	Dec 2025	Solar
West Brookfield Solar, LLC	CVI CleanCapital Solar 7	West Brookfield, MA	2 GWh	Dec 2015	Dec 2025	Solar
Belchertown	Altus Power America Management, LLC	Belchertown, MA	1 GWh	Nov 2015	Dec 2025	Solar
Stone Hill Solar CSG	MN8 Energy LLC	North Easton, MA	2 GWh	Jun 2014	Dec 2025	Solar
Bridgewater Solar CSG	MN8 Energy LLC	Bridgewater, MA	4 GWh	Jul 2015	Dec 2025	Solar
Holliston Solar CSG	MN8 Energy LLC	Holliston, MA	1 GWh	Jun 2015	Dec 2025	Solar
Wilmington Solar	MN8 Energy LLC	Wilmington, MA	2 GWh	Oct 2015	Dec 2025	Solar
Fall River Solar CSG	MN8 Energy LLC	Fall River, MA	2 GWh	Jan 2013	Dec 2025	Solar
Shirley Landfill	Altus Power America Management, LLC	Shirley, MA	1 GWh	Apr 2017	Dec 2025	Solar
DDR Shoppers World	Altus Power America Management, LLC	Framingham, MA	2 GWh	Oct 2017	Dec 2025	Solar
Meadow Solar	Altus Power America Management, LLC	Boston, MA	4 GWh	Nov 2016	Dec 2025	Solar
Cedarville CSG	Altus Power America Management, LLC	Plymouth, MA	914 MWh	Jun 2017	Dec 2025	Solar
Deerfield CSG Solar	MN8 Energy LLC	Deerfield, MA	4 GWh	Nov 2017	Dec 2025	Solar
Iron Horse Solar 4, LLC	Iron Horse Solar 4, LLC	North Billerica, MA	7 GWh	May 2017	Dec 2025	Solar
Hampshire College Hybrid	Tesla Inc.	Amherst, MA	3 GWh	Apr 2017	Dec 2025	Solar
Town of Lexington Solar	Syncarpha Lexington, LLC	Lexington, MA	3 GWh	Apr 2017	Dec 2025	Solar
Depot Hill Solar CSG	CCC Solar Holdings LLC	Charlton, MA	3 GWh	Sep 2016	Dec 2025	Solar
Bird Machine Solar Farm	Bird Machine Solar Farm, LLC	South Walpole, MA	6 GWh	Jul 2017	Dec 2025	Solar
Iron Horse Solar I CSG	Iron Horse Solar 1, LLC	North Billerica, MA	4 GWh	Nov 2016	Dec 2025	Solar
126 Grove Solar LLC	Altus Power America Management, LLC	Franklin, MA	2 GWh	May 2012	Dec 2025	Solar
VEC Alburgh Array	SoCore Energy LLC	Alburgh, VT	1 GWh	Nov 2016	Dec 2025	Solar
Bashaw Solar CSG 1, LLC	Bashaw Solar 1, LLC	Newbury, MA	3 GWh	Mar 2017	Dec 2025	Solar
Kearsarge Southwick LLC	Kearsarge Solar LLC	Southwick, MA	5 GWh	Feb 2015	Dec 2025	Solar
Sutton Solar CSG	Sutton Solar, LLC	Sutton, MA	3 GWh	Oct 2016	Dec 2025	Solar
Nexamp Peak CSG	Nexamp Peak, LLC	Hancock, MA	2 GWh	Nov 2015	Dec 2025	Solar
Stafford MS Ground Mount Community Solar	Town of Stafford - (CT)	Stafford, CT	3 GWh	Jun 2016	Dec 2025	Solar
Mt. Tom Solar Project Hybrid	Mt. Tom Solar, LLC	Holyoke, MA	4 GWh	Dec 2016	Dec 2025	Solar
Northampton Landfill Solar PV	Ameresco Glendale Road Solar PV LLC	Northampton, MA	2 GWh	Oct 2017	Dec 2025	Solar
Cold River Road Solar	Onsite Partners, LLC	North Clarendon, VT	3 GWh	Nov 2016	Dec 2025	Solar
VEC Magee Hill Solar	SoCore Energy LLC	Hinesburgh, VT	2 GWh	Oct 2017	Dec 2025	Solar
Chocksett Rd Energy Storage Project	Sterling Municipal Light Department - (MA)	Sterling, MA	62 MWh	Mar 2017	Dec 2025	Electricity used for energy storage
AIS Solar Project	Terraform Arcadia	Leominster, MA	3 GWh	Nov 2016	Dec 2025	Solar
WED Portsmouth One, LLC	Greenbacker Renewable Energy Corporation	Portsmouth, RI	5 GWh	Jul 2016	Dec 2025	Wind
Redbrook Community Solar 1	Redbrook Solar 1, LLC	Plympton, MA	1 GWh	Sep 2017	Dec 2025	Solar
Brook Street Solar 1 CSG	Brook Street Solar 1, LLC	Plympton, MA	3 GWh	Jul 2017	Dec 2025	Solar
Bullock Road Solar 1	Bullock Road Solar 1, LLC	Freetown, MA	4 GWh	Jun 2018	Dec 2025	Solar
BWC Wading River One, Two, Three CSG	Ameresco BWC Wading River LLC	Mendon, MA	2 GWh	Oct 2017	Dec 2025	Solar
Syncarpha Freetown	Marie's Way Solar I, LLC	Freetown, MA	6 GWh	Oct 2016	Dec 2025	Solar
Elizabeth Mines Solar 1	Elizabeth Mines Solar 1, LLC	So. Strafford, VT	7 GWh	Oct 2017	Dec 2025	Solar
Nebraska Valley Solar Farm	Town of Stowe - (VT)	Stowe, VT	1 GWh	Jul 2016	Dec 2025	Solar
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
Boston Medical Center CHP Plant	Boston Medical Center	Boston, MA	14 GWh	Mar 2017	Dec 2025	Natural Gas
433 Purchase Solar NG, LLC	NuGen Capital Management	Swansea, MA	4 GWh	Mar 2012	Dec 2025	Solar
Old Wardour Solar	NuGen Capital Management	East Brookfield, MA	7 GWh	Dec 2015	Dec 2025	Solar
Shuman Solar	NuGen Capital Management	Stoughton, MA	2 GWh	Mar 2016	Dec 2025	Solar
Vuelta Solar	NuGen Capital Management	East Brookfield, MA	7 GWh	Dec 2015	Dec 2025	Solar
Farley Road Community Solar	Farley Road Solar, LLC	Dudley, MA	2 GWh	Jul 2017	Dec 2025	Solar
Belchertown Renewables Community Solar	Belchertown Renewables, LLC	Belchertown, MA	6 GWh	Feb 2018	Dec 2025	Solar
Theodore Drive Community Solar	Theodore Drive Solar, LLC	Westminster, MA	2 GWh	Feb 2018	Dec 2025	Solar
Upton Community Solar	Upton Solar, LLC	Upton, MA	3 GWh	Aug 2017	Dec 2025	Solar
Pleasantdale Road Community Solar	Pleasantdale Road Solar, LLC	Rutland, MA	1 GWh	Aug 2017	Dec 2025	Solar
Hatfield Renewables Community Solar	Hatfield Renewables, LLC	Hatfield, MA	3 GWh	Aug 2017	Dec 2025	Solar
Peterson Road Solar	Peterson Road Solar, LLC	Palmer, MA	4 GWh	Mar 2017	Dec 2025	Solar
Sampson Road Community Solar	Sampson Road Solar, LLC	Charlton, MA	3 GWh	Nov 2017	Dec 2025	Solar
Golden Hills Solar	Golden Hills Solar, LLC	Rutland, MA	7 GWh	Aug 2017	Dec 2025	Solar
Next Generation Solar Farm	Cypress Creek Renewables	New Haven, VT	4 GWh	Nov 2017	Dec 2025	Solar
Grafton PV	MN8 Energy LLC	Grafton, MA	4 GWh	Sep 2016	Dec 2025	Solar
Barrett PV	MN8 Energy LLC	Oxford, MA	17 GWh	Oct 2016	Dec 2025	Solar
MDFA Devens-Saratoga	Terraform Arcadia	Devens, MA	3 GWh	Feb 2016	Dec 2025	Solar
Smith & Wesson at Springfield MA PV	Luminace Solar Massachusetts, LLC	Springfield, MA	2 GWh	Jun 2017	Dec 2025	Solar
Centaurus Solar - MA	LSE Centaurus LLC	Ashland, MA	3 GWh	Oct 2016	Dec 2025	Solar
Kearsarge Bellingham PV	Kearsarge Bellingham LLC	Bellingham, MA	5 GWh	Nov 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