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 2025
Annual Generation	105.5 TWh
Power Plants	1,577
Utilities	819
Ranked #15 out of 65 in terms of net annual generation
Ranked #12 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 55.8% Nuclear \| 26% Water \| 5% Other Fuel \| 4.4% Wind \| 4% Solar \| 1.5% Coal \| 0.4%

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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
3104 Batavia Solar	3104 Batavia Solar, LLC	Batavia, NY	5 GWh	Feb 2021	Dec 2024	Solar
3232 Batavia Solar	3232 Batavia Solar, LLC	Batavia, NY	7 GWh	Feb 2021	Dec 2024	Solar
Marlborough Solar	Marlborough Solar, LLC	Milton, NY	3 GWh	Feb 2021	Dec 2024	Solar
ENGIE 2019 ProjectCo-MA1, LLC	ENGIE 2019 ProjectCo MA-1, LLC	Agawam, MA	6 GWh	Feb 2021	Dec 2024	Solar
Cranberry Highway Solar LLC	Cranberry Highway Solar, LLC	Wareham, MA	2 GWh	Feb 2021	Dec 2024	Solar
Syncarpha Puddon I Hybrid CSG	Syncarpha Puddon I, LLC	Northbridge, MA	9 GWh	Feb 2021	Dec 2024	Solar
Torrington Solar One, LLC	DG Connecticut III, LLC	Torrington, CT	3 GWh	Feb 2021	Dec 2024	Solar
Syncarpha Puddon II Hybrid CSG	Syncarpha Puddon II, LLC	Northbridge, MA	9 GWh	Feb 2021	Dec 2024	Solar
Kearsarge Haverhill	Kearsarge Haverhill LLC	Haverhill, MA	4 GWh	Feb 2021	Dec 2024	Solar
Raboth - Marion Drive	Madison Energy Holdings LLC	Kingston, MA	5 GWh	Feb 2021	Dec 2024	Solar
Roger Williams - Melville at Portsmouth	Luminace Solar Rhode Island, LLC	Portsmouth, RI	5 GWh	Feb 2021	Dec 2024	Solar
CP East Hampton I & II Solar	NJR Clean Energy Ventures Corporation	East Hampton, CT	3 GWh	Jan 2021	Dec 2024	Solar
Jericho Gravel Solar Farm	SoCore Energy LLC	Jerico, VT	2 GWh	Dec 2020	Dec 2024	Solar
Jericho Landfill Solar Farm	SoCore Energy LLC	Jerico, VT	2 GWh	Dec 2020	Dec 2024	Solar
Dresser Hill CSG	Dresser Hill Solar, LLC	Southbridge, MA	6 GWh	Dec 2020	Dec 2024	Solar
Few Solar	Ecos Energy LLC	Somers, CT	2 GWh	Dec 2020	Dec 2024	Solar
Madison Solar (CT)	Ecos Energy LLC	Somers, CT	2 GWh	Dec 2020	Dec 2024	Solar
Blair Solar	Ecos Energy LLC	Somers, CT	2 GWh	Dec 2020	Dec 2024	Solar
ZPD-PT Solar Project 2017-021 LLC Hybrid	AES Distributed Energy	Wilbraham, MA	2 GWh	Dec 2020	Dec 2024	Solar
ZPD-PT Solar Project 2017-023 LLC Hybrid	AES Distributed Energy	Southbridge, MA	4 GWh	Dec 2020	Dec 2024	Solar
Settlers Solar	Settlers Solar, LLC	Lunenberg, MA	8 GWh	Nov 2020	Dec 2024	Solar
Kearsarge Ludlow LLC	Kearsarge Ludlow LLC	Ludlow, MA	6 GWh	Nov 2020	Dec 2024	Solar
Woburn	Greenbacker Renewable Energy Corporation	Woburn, MA	2 GWh	Nov 2020	Dec 2024	Solar
Kearsarge East Providence	Kearsarge East Providence LLC	East Providence, RI	3 GWh	Nov 2020	Dec 2024	Solar
Kearsarge Westerly	Kearsarge Westerly LLC	Westerly, RI	7 GWh	Nov 2020	Dec 2024	Solar
Clark Road Solar 1, LLC	Clark Road Solar 1, LLC	Gardner, MA	9 GWh	Nov 2020	Dec 2024	Solar
Syncarpha Halifax Hybrid CSG	Syncarpha Halifax, LLC	Halifax, MA	3 GWh	Nov 2020	Dec 2024	Solar
Syncarpha Northampton Hybrid CSG	Syncarpha Northampton, LLC	Northampton, MA	5 GWh	Nov 2020	Dec 2024	Solar
Elm Street	ISM Solar Dighton 3, LLC	Dighton, MA	5 GWh	Nov 2020	Dec 2024	Solar
Wilbraham	BWC East Brook, LLC	Wilbraham, MA	5 GWh	Nov 2020	Dec 2024	Solar
Weaver Wind	Weaver Wind, LLC (Longroad)	Township 16, ME	227 GWh	Nov 2020	Sep 2025	Wind
GD Glocester White Oak I, LLC	GD Glocester White Oak I, LLC	Glocester, RI	3 GWh	Nov 2020	Dec 2024	Solar
WED Coventry Seven, LLC	WED Coventry Seven, LLC	Coventry, RI	5 GWh	Nov 2020	Dec 2024	Solar
Lawrence Brook	Greenbacker Renewable Energy Corporation	Morristown, VT	3 GWh	Nov 2020	Dec 2024	Solar
Sutton Solar 2, LLC CSG	Sutton Solar 2, LLC	Sutton, MA	1 GWh	Nov 2020	Dec 2024	Solar
Alicea Solar Project Hybrid CSG	AES Distributed Energy	Southbridge, MA	4 GWh	Nov 2020	Dec 2024	Solar
West A&B Solar Project Hybrid CSG	AES Distributed Energy	Southbridge, MA	5 GWh	Nov 2020	Dec 2024	Solar
Annese Solar Project Hybrid CSG	AES Distributed Energy	Southbridge, MA	8 GWh	Nov 2020	Dec 2024	Solar
Nutmeg Solar	Nutmeg Solar LLC	Enfield, CT	34 GWh	Nov 2020	Dec 2024	Solar
ISM Solar Cranston CSG	Nautilus Solar Solutions	Cranston, RI	4 GWh	Nov 2020	Dec 2024	Solar
East Brookfield Main Street Solar LLC CS	AES Distributed Energy	East Brookfield, MA	2 GWh	Nov 2020	Nov 2024	Solar
Blackhorse Farm Solar, LLC CSG	AES Distributed Energy	Warren, RI	6 GWh	Nov 2020	Nov 2024	Solar
Cream Street Solar	Cream Street Solar, LLC	Hyde Park, NY	4 GWh	Nov 2020	Dec 2024	Solar
1639 RT 29 Solar 1	1639 RT 29 Solar 1, LLC	Gloversville, NY	8 GWh	Nov 2020	Dec 2024	Solar
1639 RT 29 Solar 2	1639 RT 29 Solar 2, LLC	Gloversville, NY	5 GWh	Nov 2020	Dec 2024	Solar
Sugar Hill Solar 1	Sugar Hill Solar 1, LLC	Clifton Park, NY	8 GWh	Nov 2020	Dec 2024	Solar
Seaboard Charlton, LLC	Navisun LLC	Charlton, MA	3 GWh	Nov 2020	Dec 2024	Solar
BWC Rams Horn Channel LLC	Navisun LLC	Beverly, MA	6 GWh	Nov 2020	Dec 2024	Solar
Powder Hill	LSE Delphinus LLC	Enfield, CT	3 GWh	Nov 2020	Dec 2024	Solar
Tolland	Sunrise on Clubhouse Rd. LLC	Tolland, MA	8 GWh	Nov 2020	Dec 2024	Solar
Westhampton	Sunrise on Montague Rd. LLC	Westhampton, MA	7 GWh	Nov 2020	Dec 2024	Solar
Peru (MA)	Sunrise on West Main Rd. LLC	Peru, MA	5 GWh	Oct 2020	Dec 2024	Solar
Russell (MA)	Sunrise on Blandford Rd. LLC	Russell, MA	5 GWh	Oct 2020	Dec 2024	Solar
Kearsarge Fogland	Kearsarge Fogland LLC	Tiverton, RI	3 GWh	Oct 2020	Dec 2024	Solar
Breckenridge Solar	Breckenridge Street Solar 1, LLC	Palmer, MA	7 GWh	Oct 2020	Dec 2024	Solar
Hopkins Hill CSG	Nautilus Solar Solutions	West Greenwich, RI	9 GWh	Oct 2020	Dec 2024	Solar
Sanford Solar	Sanford Airport Solar, LLC	Sanford, ME	88 GWh	Oct 2020	Sep 2025	Solar
GD Hopkinton Main I, LLC	GD Hopkinton Main I, LLC	Hopkinton, RI	16 GWh	Oct 2020	Dec 2024	Solar
Whatley Renewables	Whatley Renewables, LLC	Whatley, MA	2 GWh	Sep 2020	Dec 2024	Solar
Town of Burrillville Solar CSG	Standard Solar	Burrillville, RI	5 GWh	Sep 2020	Dec 2024	Solar
Medtronic - New Haven	Bloom Energy	North Haven, CT	2 GWh	Sep 2020	Dec 2024	Natural Gas
Medtronic - New Haven 2	Bloom Energy	North Haven, CT	16 GWh	Sep 2020	Dec 2024	Natural Gas
Holliston LLC	Greenbacker Renewable Energy Corporation	Holliston, MA	2 GWh	Sep 2020	Dec 2024	Solar
LR Wheatfield Solar 1	LR Wheatfield Solar 1, LLC	Wheatfield, NY	8 GWh	Sep 2020	Dec 2024	Solar
Pendleton Solar 1	Pendleton Solar 1, LLC	Lockport, NY	8 GWh	Sep 2020	Dec 2024	Solar
Little Falls Solar	Little Falls Solar	Little Falls, NY	4 GWh	Sep 2020	Dec 2024	Solar
Westport (MA)	Sunrise on Drift Rd. LLC	Westport, MA	4 GWh	Sep 2020	Dec 2024	Solar
Little Falls Solar 1	Little Falls Solar 1, LLC	Little Falls, NY	3 GWh	Aug 2020	Dec 2024	Solar
CoreSite - Somerville	Bloom Energy	Somerville, MA	5 GWh	Aug 2020	Dec 2024	Natural Gas
Norton LLC	Greenbacker Renewable Energy Corporation	Norton, MA	4 GWh	Aug 2020	Apr 2024	Solar
Hopkinton Phase 2	Vista Solar, Inc.	Ashaway, RI	4 GWh	Aug 2020	Dec 2024	Solar
Easthampton CSG	Easthampton Park Solar 1, LLC	Easthampton, MA	4 GWh	Aug 2020	Dec 2024	Solar
Erving CSG	Erving Poplar Mountain Solar 1, LLC	Erving, MA	1 GWh	Aug 2020	Dec 2024	Solar
McDougle-Mitchell Solar Project Hybrid C	AES Distributed Energy	Charlton, MA	7 GWh	Jul 2020	Dec 2024	Solar
Pine Hill	AEP Onsite Partners, LLC	Johnston, RI	8 GWh	Jul 2020	Dec 2024	Solar
Woodland Avenue Solar 1	Woodland Avenue Solar 1, LLC	Seekonk, MA	8 GWh	Jul 2020	Dec 2024	Solar
Seaboard Oxford, LLC	Navisun LLC	Oxford, MA	3 GWh	Jul 2020	Dec 2024	Solar
Smithfield Solar Farm, LLC	Smithfield Solar Farm	Smithfield, RI	4 GWh	Jun 2020	Dec 2024	Solar
Partridge Hill Solar Hybrid	AES Distributed Energy	Charlton, MA	3 GWh	Jun 2020	Dec 2024	Solar
Griffin Road Solar 2	Griffin Road Solar 2, LLC	Charlton, MA	2 GWh	May 2020	Dec 2024	Solar
Cronin Road Solar 1, LLC CSG Hybrid	AES Distributed Energy	Warren, MA	3 GWh	May 2020	Dec 2024	Solar
Sydney Solar	Ecos Energy LLC	Hampton, CT	3 GWh	May 2020	Dec 2024	Solar
Dickinson Solar (CT)	Ecos Energy LLC	Hampton, CT	3 GWh	May 2020	Dec 2024	Solar
Cycz Solar Project CSG Hybrid	AES Distributed Energy	Spencer, MA	3 GWh	May 2020	Dec 2024	Solar
28 Livermore Hill Road Solar	28 Livermore Hill Road Solar, LLC	Westminster, MA	8 GWh	May 2020	Dec 2024	Solar
Sunpin Blandford	Blandford Sun, LLC	Southwick, MA	6 GWh	May 2020	Dec 2024	Solar
Plainfield Solar 2	Ecos Energy LLC	Plainfield, CT	1 GWh	Mar 2020	Dec 2024	Solar
Fitchburg Renewables	Fitchburg Renewables, LLC	Fitchburg, MA	6 GWh	Feb 2020	Dec 2024	Solar
South Windsor Fuel Cell	South Energy Investments LLC	South Windsor, CT	39 GWh	Feb 2020	Dec 2024	Natural Gas
Hurteau Solar Project Hybrid	AES Distributed Energy	Uxbridge, MA	3 GWh	Feb 2020	Dec 2024	Solar
RT405 Westerlo Solar 2	RT405 Westerlo Solar 2, LLC	Albany, NY	8 GWh	Feb 2020	Dec 2024	Solar
Spencer Solar MA	Citizens Enterprises Corporation	Spencer, MA	4 GWh	Feb 2020	Dec 2024	Solar
Oxford Solar	Citizens Enterprises Corporation	Oxford, MA	6 GWh	Jan 2020	Dec 2024	Solar
Kearsarge Acushnet	Kearsarge Acushnet LLC	Acushnet, MA	3 GWh	Jan 2020	Dec 2024	Solar
Wilmarth Solar	Wilmarth Lane Solar 1, LLC	Plainville, MA	8 GWh	Jan 2020	Dec 2024	Solar
Rounseville Solar	Rounseville Solar 1, LLC	Rochester, MA	4 GWh	Jan 2020	Dec 2024	Solar
Partridgeville Hybrid CSG	Partridgeville Road Solar 1, LLC	Athol, MA	6 GWh	Dec 2019	Dec 2024	Solar
Goose Pond Solar	LSE Dorado, LLC	Southwick, MA	7 GWh	Dec 2019	Dec 2024	Solar
Plainfield Solar 1	Ecos Energy LLC	Plainfield, CT	1 GWh	Dec 2019	Dec 2024	Solar
Montague Road Solar	Montague Road Solar, LLC	Amherst, MA	5 GWh	Nov 2019	Dec 2024	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	696.7 GWh	4
#25	Dominion Energy South Carolina, Inc.	25.7 TWh	87
#13	Duke Energy Carolinas	112.5 TWh	565
#17	Duke Energy Progress East	64.3 TWh	559
#52	Duke Energy Progress West	4.3 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.4 TWh	25
#12	New York Independent System Operator	131.6 TWh	1,211
#1	PJM Interconnection, LLC	870.7 TWh	2,465
#30	South Carolina Public Service Authority	18.9 TWh	34
#59	Southeastern Power Administration	1.5 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	188.0 TWh	2,075
#9	Tennessee Valley Authority	161.6 TWh	204
#10	Florida Power & Light Co.	148.9 TWh	187
#12	New York Independent System Operator	131.6 TWh	1,211
#13	Duke Energy Carolinas	112.5 TWh	565
#15	ISO New England	105.5 TWh	1,577
#16	Bonneville Power Administration	80.5 TWh	163
#17	Duke Energy Progress East	64.3 TWh	559
#18	PacifiCorp East	61.1 TWh	216
#19	Salt River Project Agricultural Improvement and Power District	60.0 TWh	48