ISO New England

Balancing Authority Summary Information

ISO New England is ranked #14 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	Jun 2025
Annual Generation	103.4 TWh
Power Plants	1,561
Utilities	814
Ranked #14 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 \| 57.1% Nuclear \| 24.6% Water \| 6.2% Other Fuel \| 4.5% Wind \| 3.7% Solar \| 1.4% 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
77 Farm to Market Rd Hybrid(CSG)	77F2M WHAM8 Solar, LLC	Wareham, MA	11 GWh	Nov 2021	Dec 2023	Solar
71 Charlotte Furnace Rd Hybrid(CSG)	71CFR WHAM8 Solar, LLC	Wareham, MA	7 GWh	Nov 2021	Dec 2023	Solar
700 Binnewater	Madison Energy Investments LLC	Rosendale, NY	2 GWh	Aug 2022	Dec 2024	Solar
651 Chase Solar NG	NuGen Capital Management	Lunenburg, MA	4 GWh	May 2014	Dec 2024	Solar
59 Federal Rd(CSG)	59FED WHAM8 Solar, LLC	Carver, MA	13 GWh	Oct 2021	Dec 2023	Solar
580 River Solar	NuGen Capital Management	Winchendon, MA	5 GWh	Aug 2018	Dec 2024	Solar
515 Main Saugus	515 Main Saugus LLC	Saugus, MA	2 GWh	Aug 2017	Dec 2024	Solar
5 Berry	Madison Energy Investments LLC	Plainsville, MA	4 GWh	Aug 2023	Dec 2024	Solar
433 Purchase Solar NG, LLC	NuGen Capital Management	Swansea, MA	4 GWh	Mar 2012	Dec 2024	Solar
3Colton	Madison Energy Holdings LLC	Millbury, MA	5 GWh	Jun 2023	Dec 2024	Solar
3232 Batavia Solar	3232 Batavia Solar, LLC	Batavia, NY	7 GWh	Feb 2021	Dec 2024	Solar
3104 Batavia Solar	3104 Batavia Solar, LLC	Batavia, NY	5 GWh	Feb 2021	Dec 2024	Solar
301 Chestnut Solar NG	NuGen Capital Management	East Longmeadow, MA	2 GWh	Mar 2017	Dec 2024	Solar
299 Farm to Market Rd Hybrid(CSG)	299F2M WHAM8 Solar, LLC	Wareham, MA	8 GWh	Nov 2021	Dec 2023	Solar
28 Livermore Hill Road Solar	28 Livermore Hill Road Solar, LLC	Westminster, MA	8 GWh	May 2020	Dec 2024	Solar
276 Federal Rd(CSG)	276FED WHAM8 Solar, LLC	Carver, MA	10 GWh	Oct 2021	Dec 2024	Solar
265 Pleasant Solar NG, LLC	NuGen Capital Management	Lunenburg, MA	1 GWh	Jun 2014	Dec 2024	Solar
205 Sturbridge A	Altus Power America Management, LLC	Brimfield, MA	3 GWh	May 2014	Dec 2024	Solar
201 Sturbridge B	Altus Power America Management, LLC	Brimfield, MA	2 GWh	May 2014	Dec 2024	Solar
196 Tremont St(CSG)	196TRE WHAM8 Solar, LLC	Carver, MA	4 GWh	Oct 2021	Dec 2023	Solar
1639 RT 29 Solar 2	1639 RT 29 Solar 2, LLC	Gloversville, NY	5 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
160 Tihonet Rd Hybrid(CSG)	160TIH WHAM8 Solar, LLC	Wareham, MA	10 GWh	Nov 2021	Dec 2023	Solar
158th Fighter Wing Solar Farm	158th Fighter Wing	South Burlington, VT	1 GWh	Aug 2011	Dec 2023	Solar
154 D Fisher	Greenbacker Renewable Energy Corporation	Middleborough, MA	2 GWh	Nov 2015	Dec 2024	Solar
15 Glen Harris RD	ME Sandy River LLC	New Sharon, ME	2 GWh	May 2024	Dec 2024	Solar
126 Grove Solar LLC	Altus Power America Management, LLC	Franklin, MA	2 GWh	May 2012	Dec 2024	Solar
118 Echo	Madison Energy Investments LLC	Mashpee, MA	4 MWh	Jun 2023	Dec 2024	Solar
115 G Fisher	Greenbacker Renewable Energy Corporation	Middleborough, MA	1 GWh	Sep 2015	Dec 2024	Solar
10 Briggs Solar NG, LLC (East)	NuGen Capital Management	East Greenwich, RI	7 GWh	May 2021	Dec 2024	Solar
0 Hammond St CSG	0HAM WHAM8 Solar, LLC	Carver, MA	14 GWh	Sep 2021	Dec 2024	Solar
ZPD-PT Solar Project 2017-044 LLC CSG	AES Distributed Energy	Spencer, MA	1 GWh	Sep 2021	Dec 2024	Solar
ZPD-PT Solar Project 2017-038 Hybrid LLC	AES Distributed Energy	Lancaster, MA	7 GWh	Mar 2021	Dec 2024	Solar
ZPD-PT Solar Project 2017-023 LLC Hybrid	AES Distributed Energy	Southbridge, MA	4 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 2017-006 LLC Hybrid	AES Distributed Energy	Warren, MA	5 GWh	Jun 2021	Dec 2024	Solar
Yale New Haven - New London	Bloom Energy	New London, CT	15 GWh	Aug 2022	Dec 2024	Natural Gas
Wyman Hydro	Brookfield White Pine Hydro LLC	Bingham, ME	337 GWh	Dec 1929	Dec 2024	Water
WYM 1250 Palmer LLC	CVI CleanCapital Solar 6	Palmer, MA	755 MWh	Aug 2013	Dec 2023	Solar
Wrightsville Hydro Plant	Washington Electric Coop - (VT)	Montpelier, VT	2 GWh	Aug 1985	Nov 2024	Water
Worumbo Hydro Station	Eagle Creek Renewable Energy, LLC	Lisbon Falls, ME	89 GWh	Jan 1989	Dec 2024	Water
Worcester Landfill	City of Worcester DPW	Worcester, MA	9 GWh	Apr 2017	Dec 2023	Solar
Woods Hill Solar	Woods Hill Solar, LLC	Pomfret, CT	25 GWh	Nov 2018	Apr 2025	Solar
Woodland Avenue Solar 1	Woodland Avenue Solar 1, LLC	Seekonk, MA	8 GWh	Jul 2020	Dec 2024	Solar
Woodchuck Solar, LLC CSG	38 Degrees North, LLC	Spencer, MA	2 GWh	Nov 2017	Dec 2024	Solar
Woburn	Greenbacker Renewable Energy Corporation	Woburn, MA	2 GWh	Nov 2020	Dec 2024	Solar
Winslow PV - BD Solar 2 LLC	BD Solar 2 LLC	Winslow, ME	13 GWh	Jun 2022	Dec 2024	Solar
Wind Colebrook South	Wind Colebrook South	Colebrook, CT	11 GWh	Oct 2015	Mar 2025	Wind
Winchendon Solar	Altus Power America Management, LLC	Winchendon, MA	2 GWh	Mar 2014	Dec 2024	Solar
Winchendon Landfill Solar	Onyx Asset Services Group	Winchendon, MA	3 GWh	Sep 2018	Dec 2024	Solar
Wilson Solar	Consolidated Edison Solutions Inc.	Spencer, MA	2 GWh	May 2013	Dec 2024	Solar
Wilson Solar	Ecos Energy LLC	Lebanon, CT	2 GWh	Feb 2018	Dec 2024	Solar
Wilmington Solar	MN8 Energy LLC	Wilmington, MA	3 GWh	Oct 2015	Dec 2024	Solar
Wilmarth Solar	Wilmarth Lane Solar 1, LLC	Plainville, MA	8 GWh	Jan 2020	Dec 2023	Solar
Williamsville Hybrid CSG	147 Williamsville Solar 1, LLC	Hubbardston, MA	7 GWh	Aug 2021	Dec 2023	Solar
Williamstown Solar	CVI CleanCapital Solar 1 LLC	Williamstown, VT	2 GWh	Nov 2012	Dec 2023	Solar
Williamsburg Solar LLC VNEM CSG	Tesla Inc.	Haydenville, MA	3 GWh	Jan 2016	Dec 2024	Solar
Williamsburg	AES Distributed Energy	Goshen, MA	7 GWh	Jun 2019	Dec 2024	Solar
Williams Rd	AES Distributed Energy	Ransomville, NY	6 GWh	Aug 2021	Dec 2024	Solar
Williams Hydro	Brookfield White Pine Hydro LLC	Solon, ME	80 GWh	Dec 1938	Dec 2024	Water
Williams College - Campus CHP	President & Trustees of Williams College	Williamstown, MA	1 GWh	Feb 2003	Dec 2024	Natural Gas : 84.0% Distillate Fuel Oil : 16.0%
William F Wyman Hybrid	FPL Energy Wyman LLC	Yarmouth, ME	50 GWh	Dec 1956	Apr 2025	Residual Fuel Oil : 99.2% Distillate Fuel Oil : 0.8%
Wilkins Station	Town of Marblehead - (MA)	Marblehead, MA	94 MWh	Oct 1975	Dec 2024	Distillate Fuel Oil
Wilder	Great River Hydro, LLC	Hartford, VT	179 GWh	Oct 1950	Dec 2024	Water
Wilbur Woods Solar LLC	AES Distributed Energy	Orange, MA	8 GWh	Aug 2021	Dec 2024	Solar
Wilbraham	BWC East Brook, LLC	Wilbraham, MA	5 GWh	Nov 2020	Dec 2024	Solar
White Rock Road LLC	White Rock Road LLC	Westerly, RI	7 GWh	Nov 2022	Dec 2024	Solar
White Lake	Granite Shore Power	Tamworth, NH	552 MWh	Jun 1968	Dec 2023	Jet Fuel
Whitcomb Solar Farm	ERWR Whitcomb Farm Solar LLC	Essex Junction, VT	3 GWh	Sep 2014	Dec 2024	Solar
Wheelabrator Saugus	Wheelabrator Environmental Systems	Saugus, MA	229 GWh	Jul 1985	Apr 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Wheelabrator North Andover	Wheelabrator Environmental Systems	North Andover, MA	238 GWh	Apr 1985	Apr 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Wheelabrator Millbury Facility	Wheelabrator Environmental Systems	Millbury, MA	317 GWh	Aug 1987	Apr 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Wheelabrator Lisbon	Wheelabrator Environmental Systems	Lisbon, CT	102 GWh	Sep 1995	Apr 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Wheelabrator Concord Facility	Wheelabrator Environmental Systems	Concord, NH	94 GWh	Mar 1989	Apr 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Wheelabrator Bridgeport	Wheelabrator Environmental Systems	Bridgeport, CT	465 GWh	Jun 1988	Apr 2025	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Whatley Renewables	Whatley Renewables, LLC	Whatley, MA	2 GWh	Sep 2020	Dec 2024	Solar
Whately Solar	Citizens Enterprises Corporation	Whately, MA	2 GWh	Feb 2013	Dec 2024	Solar
Weybridge	Green Mountain Power Corp	Weybridge, VT	14 GWh	Jan 1951	Dec 2024	Water
Westtown CSG	Altus Power America Management, LLC	Westtown, NY	3 GWh	Apr 2019	Dec 2023	Solar
Westport Stone & Sand Solar (CSG)	AES Clean Energy	Westport, MA	6 GWh	Feb 2024	Dec 2024	Solar
Westport MA 2 Community Solar	Navisun LLC	Westport, MA	2 GWh	Aug 2016	Dec 2023	Solar
Westport MA 1 Community Solar	Navisun LLC	Westport, MA	2 GWh	Aug 2016	Dec 2023	Solar
Westport Community Solar Garden	BWC Bass River LLC	Westport, MA	4 GWh	Jun 2017	Dec 2024	Solar
Westport B Community Solar Garden	BWC Hamilton Brook LLC	Westport, MA	4 GWh	Oct 2018	Dec 2024	Solar
Weston Landfill Solar	Ameresco, Inc - Weston	Weston, MA	3 GWh	Feb 2016	Dec 2024	Solar
Weston Hydro	Brookfield White Pine Hydro LLC	Skowhegan, ME	57 GWh	Dec 1919	Dec 2024	Water
Westminster Renewables, LLC CSG	Westminster Renewables, LLC	Westminster, MA	2 GWh	Sep 2018	Dec 2024	Solar
Westminster	MN8 Energy LLC	Westminster, VT	3 GWh	Nov 2016	Dec 2024	Solar
Westford Solar Park	MN8 Energy LLC	Westford, MA	5 GWh	Mar 2012	Dec 2024	Solar
Westbrook Energy Center Power Plant	Westbrook Energy Center	Westbrook, ME	3 TWh	Apr 2001	Apr 2025	Natural Gas
Westborough Solar LLC	SunRay Power LLC	Westborough, MA	2 GWh	Mar 2014	Dec 2024	Solar
West Water Street	City of Taunton	Taunton, MA	2 GWh	Dec 2017	Dec 2024	Distillate Fuel Oil
West Tisbury Generating Facility	Vineyard Reliability LLC	West Tisbury, MA	3 GWh	Dec 1974	Dec 2024	Distillate Fuel Oil
West Street Solar 1 LLC	AES Distributed Energy	Gardner, MA	9 GWh	Nov 2019	Dec 2024	Solar
West Haydenville PJ Community Solar	AES Distributed Energy	Williamsburg, MA	9 GWh	Aug 2022	Dec 2024	Solar
West Groton CHP	Hollingsworth & Vose Co West Groton	Groton, MA	22 GWh	Nov 2015	Dec 2024	Natural Gas
West Greenwich Solar	Consolidated Edison Development Inc.	West Greenwich, RI	3 GWh	Apr 2013	Apr 2025	Solar
West Enfield Hydro	Brookfield Black Bear Hydro, LLC	West Enfield, ME	77 GWh	Mar 1988	Dec 2024	Water
West Davisville Solar	Altus Power America Management, LLC	North Kingstown, RI	3 GWh	Nov 2013	Dec 2024	Solar
West Danville 15	Green Mountain Power Corp	Danville, VT	3 GWh	Dec 1916	Dec 2024	Water

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	761.1 GWh	4
#25	Dominion Energy South Carolina, Inc.	26.0 TWh	87
#13	Duke Energy Carolinas	111.8 TWh	565
#17	Duke Energy Progress East	65.0 TWh	558
#52	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	33.8 TWh	25
#12	New York Independent System Operator	130.5 TWh	1,191
#1	PJM Interconnection, LLC	858.2 TWh	2,429
#29	South Carolina Public Service Authority	19.6 TWh	34
#60	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	190.5 TWh	2,051
#8	Tennessee Valley Authority	158.7 TWh	204
#10	Florida Power & Light Co.	149.5 TWh	187
#12	New York Independent System Operator	130.5 TWh	1,191
#13	Duke Energy Carolinas	111.8 TWh	565
#14	ISO New England	103.4 TWh	1,561
#16	Bonneville Power Administration	81.4 TWh	163
#17	Duke Energy Progress East	65.0 TWh	558
#18	Salt River Project Agricultural Improvement and Power District	58.8 TWh	48
#19	PacifiCorp East	57.6 TWh	215