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 2024
Annual Generation	103.1 TWh
Power Plants	1,487
Utilities	782
Ranked #15 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 \| 57.5% Nuclear \| 25.1% Water \| 7.5% Other Fuel \| 4.5% Wind \| 3.3% Solar \| 1.2% Coal \| 0.1%

Map of ISO New England

Register Now for Comprehensive Access

Subscribe now to access all power plant data, utility information, FERC EQR data, and more for ISO New England.

Create Your Account Today

Daily Net Generation for ISO New England for the past 3 Years

Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Wells (ME)	Nautilus Solar Solutions	Wells, ME	8 GWh	Jun 2022	Dec 2023	Solar
Wellesley College Central Utility Plant	Wellesley College	Wellesley, MA	480 MWh	May 1985	Dec 2023	Natural Gas
DG Webster LLC CSG	DG Webster, LLC	Webster, MA	2 GWh	Nov 2017	Dec 2023	Solar
Webster Solar	Webster Solar, LLC	Webster, MA	1 GWh	Nov 2017	Dec 2023	Solar
Ascutney	Green Mountain Power Corp	Weatherfield, VT	239 MWh	Jul 1961	Aug 2024	Distillate Fuel Oil
Lockwood Hydroelectric Facility	Merimil Ltd Partnership	Waterville, ME	24 GWh	Sep 1985	Dec 2023	Water
Messalonskee 5	Messalonskee Stream Hydro LLC	Waterville, ME	5 GWh	Dec 1934	Dec 2023	Water
Cenergy - Waterville (CSG)	Luminace Sunbeam Development Holdings, LLC	Waterville, ME	2 GWh	Jun 2023	Dec 2023	Solar
Webb Road Solar	NextGrid Mastic, LLC	Waterville, ME	5 GWh	Aug 2022	Dec 2023	Solar
Watertown Solar One, LLC	DG Connecticut III, LLC	Watertown, CT	3 GWh	May 2021	Dec 2023	Solar
Town of Halfmoon	Tesla Inc.	Waterford, NY	1 GWh	May 2017	Dec 2023	Solar
Millstone	Dominion Energy Nuclear Conn Inc	Waterford, CT	16 TWh	Nov 1975	Sep 2024	Nuclear
Waterbury 22	Green Mountain Power Corp	Waterbury, VT	16 GWh	May 1953	Dec 2023	Water
Moretown	EPP Renewable Energy	Waterbury, VT	5 GWh	Nov 2008	Dec 2023	Landfill Gas
Waterbury Generation	Engie North America	Waterbury, CT	40 GWh	May 2009	Dec 2023	Natural Gas : 99.7%
WED Kingstown Solar I - East Array	CleanCapital Holdings	Washington, RI	4 GWh	Nov 2017	Dec 2023	Solar
Washington WS01	Nautilus Solar Solutions	Washington, ME	6 GWh	May 2022	Dec 2023	Solar
Kilvert	Captona Kilvert Street Warwick LLC	Warwick, RI	8 GWh	Nov 2018	Dec 2023	Solar
Blackhorse Farm Solar, LLC CSG	AES Distributed Energy	Warren, RI	6 GWh	Nov 2020	Dec 2023	Solar
Mass Midstate Solar 3	Evergreen Wind, LLC	Warren, MA	6 GWh	Apr 2014	Dec 2023	Solar
Mass Midstate Solar 2	Evergreen Wind, LLC	Warren, MA	7 GWh	Apr 2014	Dec 2023	Solar
Mass Midstate Solar 1	Evergreen Wind, LLC	Warren, MA	7 GWh	Apr 2014	Dec 2023	Solar
Cronin Road Solar 1, LLC CSG Hybrid	AES Distributed Energy	Warren, MA	3 GWh	May 2020	Dec 2023	Solar : 99.7%
Morin Solar 2013 LLC	CVI CleanCapital Solar 6	Warren, MA	5 GWh	Nov 2013	Dec 2023	Solar
ZPD-PT Solar Project 2017-006 LLC Hybrid	AES Distributed Energy	Warren, MA	6 GWh	Jun 2021	Dec 2023	Solar
160 Tihonet Rd Hybrid(CSG)	160TIH WHAM8 Solar, LLC	Wareham, MA	10 GWh	Nov 2021	Dec 2023	Solar
Cranberry Highway Solar LLC	Cranberry Highway Solar, LLC	Wareham, MA	3 GWh	Feb 2021	Dec 2023	Solar
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
299 Farm to Market Rd Hybrid(CSG)	299F2M WHAM8 Solar, LLC	Wareham, MA	8 GWh	Nov 2021	Dec 2023	Solar
BWC Harlow Brook	BWC Harlow Brook, LLC	Wareham, MA	2 GWh	Nov 2018	Dec 2023	Solar
BWC Wareham River	BWC Wareham River, LLC	Wareham, MA	2 GWh	Nov 2018	Dec 2023	Solar
BWC Pocasset River	BWC Pocasset River, LLC	Wareham, MA	2 GWh	Nov 2018	Dec 2023	Solar
Onset West Community Solar Facility	Kearsarge Onset LLC	Wareham, MA	2 GWh	Mar 2016	Dec 2022	Solar
Onset East Community Solar Facility	Kearsarge Onset LLC	Wareham, MA	2 GWh	Mar 2016	Dec 2022	Solar
Tihonet Solar	Consolidated Edison Solutions Inc.	Wareham, MA	2 GWh	Apr 2014	Dec 2023	Solar
BWC Gibbs Brook	BWC Gibbs Brook, LLC	Wareham, MA	7 GWh	Nov 2018	Dec 2023	Solar
Acushnet AD Makepeace	CleanCapital Holdings	Wareham, MA	6 GWh	Jun 2012	Dec 2023	Solar
Wareham MA 1 Community Solar	Navisun LLC	Wareham, MA	3 GWh	Aug 2016	Dec 2023	Solar
Wareham Solar PV	NSTAR Electric Company	Wareham, MA	1 GWh	Nov 2018	Dec 2023	Solar
Ware Palmer Road Solar LLC CSG	Ware Palmer Road Solar LLC	Ware, MA	4 GWh	May 2021	Dec 2023	Solar
Town of Ware - Canadian Tree(CSG)	MA CS Ware West, LLC	Ware, MA	2 GWh	Nov 2021	Dec 2023	Solar
Walpole Solar 2	Walpole Solar 2, LLC	Walpole, MA	4 GWh	Mar 2014	Dec 2023	Solar
Dynamic - Walpole	AES Distributed Energy	Walpole, MA	3 GWh	May 2017	Dec 2023	Solar
MHG Wallingford	Standard Solar	Wallingford, VT	4 GWh	Nov 2019	Dec 2023	Solar
Wallingford Energy	Wallingford Energy LLC	Wallingford, CT	161 GWh	Jul 2001	Dec 2023	Natural Gas
Wallingford Solar	Wallingford Renewable Energy, LLC	Wallingford, CT	22 GWh	Aug 2021	Dec 2023	Solar
Mascoma Hydro	Green Mountain Power Corp	W. Lebanon, NH	4 GWh	Nov 1988	Dec 2023	Water
Goodwin Hydroelectric	Metropolitan Dist of Hartford	W. Hartland, CT	13 GWh	Mar 1986	Dec 2023	Water
Fox Island Wind LLC	Fox Island Wind LLC	Vinalhaven, ME	6 GWh	Oct 2009	Dec 2023	Wind
Vernon Dam	Great River Hydro, LLC	Vernon, VT	191 GWh	Jul 1909	Dec 2023	Water
Vergennes 9	Green Mountain Power Corp	Vergennes, VT	12 GWh	Dec 1911	Dec 2023	Water
Maine Independence Station	Casco Bay Energy Co LLC	Veazie, ME	937 GWh	Apr 2000	Dec 2023	Natural Gas
Hurteau Solar Project Hybrid	AES Distributed Energy	Uxbridge, MA	3 GWh	Feb 2020	Dec 2023	Solar : 98.8%
Town of Uxbridge MA at Commerce Dr	Luminace Solar Net Metering, LLC	Uxbridge, MA	3 GWh	May 2012	Dec 2023	Solar
BJ's Wholesale Club, Inc- Uxbridge	Tesla Inc.	Uxbridge, MA	496 MWh	Jun 2017	Dec 2023	Solar
Palombo B Solar, LLC CSG	38 Degrees North, LLC	Uxbridge, MA	2 GWh	Nov 2017	Dec 2023	Solar
Palombo Solar, LLC CSG	38 Degrees North, LLC	Uxbridge, MA	3 GWh	Nov 2017	Dec 2023	Solar
Kearsarge Uxbridge	Kearsarge Uxbridge LLC	Uxbridge, MA	3 GWh	Aug 2018	Dec 2023	Solar
MA CS Uxbridge Community Solar	MA CS Uxbridge, LLC	Uxbridge, MA	4 GWh	Jan 2023	Dec 2023	Solar
Upton Community Solar	Upton Solar, LLC	Upton, MA	3 GWh	Aug 2017	Dec 2023	Solar
Three Corners Solar	Three Corners Solar, LLC	Unity, ME	69 GWh	-	Sep 2024	Solar
Unity Solar	Madison Energy Holdings LLC	Unity, ME	7 GWh	Nov 2021	Dec 2023	Solar
Montville Station	NRG Montville Operations Inc	Uncasville, CT	36 GWh	Dec 1953	Dec 2023	Residual Fuel Oil : 65.3% Natural Gas : 33.4% Distillate Fuel Oil : 1.3%
Fort Hill 1, 2, 3 & 4	Connecticut Mun Elec Engy Coop	Uncasville, CT	701 MWh	Jul 2010	Sep 2024	Distillate Fuel Oil
Tyngsborough Solar	Citizens Enterprises Corporation	Tyngsborough, MA	4 GWh	Dec 2016	Dec 2023	Solar
Blodgett Solar CSG	Blodgett Street Solar 1, LLC	Tyngsboro, MA	9 GWh	Jul 2021	Dec 2023	Solar
Digital Fairfield	Bloom Energy	Trumbull, CT	13 GWh	May 2018	Dec 2023	Natural Gas
Dusenberry	AES Distributed Energy	Troy, NY	8 GWh	Nov 2021	Dec 2023	Solar
Weaver Wind	Weaver Wind, LLC (Longroad)	Township 16, ME	195 GWh	Nov 2020	Sep 2024	Wind
Johnston Solar	Concord New Energy	Town of Johnston, RI	2 GWh	Jun 2015	Dec 2023	Solar
Franklin Drive	Connecticut Jet Power LLC	Torrington, CT	100 MWh	Oct 1968	Dec 2023	Kerosene
Torrington Terminal	Connecticut Jet Power LLC	Torrington, CT	67 MWh	Oct 1967	Dec 2023	Kerosene
Torrington Solar One, LLC	DG Connecticut III, LLC	Torrington, CT	3 GWh	Feb 2021	Dec 2023	Solar
Pejepscot Hydroelectric Project	Topsham Hydro Partners	Topsham, ME	71 GWh	Oct 1987	Dec 2023	Water
Tolland Solar NG LLC	NuGen Capital Management	Tolland, MA	5 GWh	Sep 2014	Dec 2023	Solar
Tiverton Power Plant	Tiverton Power LLC	Tiverton, RI	2 TWh	Feb 2000	Dec 2023	Natural Gas
Rhode Island Solar Renewable Energy IV, LLC	Rhode Island Solar Renewable Energy IV, LLC	Tiverton, RI	1 MWh	Nov 2023	Dec 2023	Solar
Kearsarge Fogland	Kearsarge Fogland LLC	Tiverton, RI	2 GWh	Oct 2020	Dec 2023	Solar
Tisbury Landfill Solar	Clean Focus Yield, LLC	Tisbury, MA	2 GWh	Jun 2014	Dec 2023	Solar
Lochmere Hydroelectric Plant	Eagle Creek Renewable Energy, LLC	Tilton, NH	4 GWh	Nov 1984	Dec 2023	Water
Clement Dam Hydro LLC	Eagle Creek Renewable Energy, LLC	Tilton, NH	12 GWh	Nov 1984	Dec 2023	Water
Barrett Farm Solar - Phase I	Onyx Asset Services Group	Thompson, CT	3 GWh	Sep 2017	Dec 2023	Solar
Syncarpha Tewksbury Hybrid CSG	Syncarpha Tewksbury, LLC	Tewksbury, MA	4 GWh	Jan 2022	Dec 2023	Solar
Leominster (MA)-South Street-R&D	South Street Solar, LLC	Tewksbury, MA	3 GWh	Nov 2013	Dec 2023	Solar
Templeton	Sunny Templeton, LLC	Templeton, MA	5 GWh	Nov 2014	Dec 2023	Solar
West Water Street	City of Taunton	Taunton, MA	1 GWh	Dec 2017	Dec 2023	Distillate Fuel Oil
MM Taunton Energy	MM Taunton Energy LLC	Taunton, MA	8 GWh	Aug 1997	Dec 2023	Landfill Gas
Cleary Flood Hybrid	City of Taunton	Taunton, MA	50 GWh	May 1966	Dec 2023	Natural Gas : 95.5% Distillate Fuel Oil : 4.5%
White Lake	Granite Shore Power	Tamworth, NH	552 MWh	Jun 1968	Dec 2023	Jet Fuel
Taftville	FirstLight Power Resources Services LLC	Taftville, CT	5 GWh	Dec 1905	Dec 2023	Water
Hancock Wind Plant	Onward Energy	T22 MD, ME	108 GWh	Nov 2016	Sep 2024	Wind
VPPSA Project 10	Vermont Public Power Supply Authority	Swanton, VT	908 MWh	Apr 2010	Dec 2023	Distillate Fuel Oil
433 Purchase Solar NG, LLC	NuGen Capital Management	Swansea, MA	4 GWh	Mar 2012	Dec 2023	Solar
Sutton Solar CSG	Sutton Solar, LLC	Sutton, MA	3 GWh	Oct 2016	Dec 2023	Solar
Sutton Solar 2, LLC CSG	Sutton Solar 2, LLC	Sutton, MA	1 GWh	Nov 2020	Dec 2023	Solar
Sunderland Solar PV	NSTAR Electric Company	Sunderland, MA	2 GWh	Aug 2018	Dec 2023	Solar
Pembroke Hydro	Eagle Creek Renewable Energy, LLC	Suncook, NH	15 GWh	Nov 1985	Dec 2023	Water
Canis Major Solar Farm	LSE Canis Major LLC	Suffield, CT	4 GWh	Nov 2016	Dec 2023	Solar
Sudbury Solar	Ecos Energy LLC	Sudbury, VT	3 GWh	Apr 2016	Dec 2023	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	903.4 GWh	4
#25	Dominion Energy South Carolina, Inc.	26.0 TWh	85
#13	Duke Energy Carolinas	110.9 TWh	556
#17	Duke Energy Progress East	63.2 TWh	554
#51	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	33.1 TWh	20
#12	New York Independent System Operator	129.8 TWh	1,100
#1	PJM Interconnection, LLC	843.4 TWh	2,305
#31	South Carolina Public Service Authority	17.9 TWh	33
#60	Southeastern Power Administration	1.6 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	192.0 TWh	1,943
#9	Tennessee Valley Authority	157.6 TWh	170
#10	Florida Power & Light Co.	147.6 TWh	159
#12	New York Independent System Operator	129.8 TWh	1,100
#13	Duke Energy Carolinas	110.9 TWh	556
#15	ISO New England	103.1 TWh	1,487
#16	Bonneville Power Administration	80.0 TWh	158
#17	Duke Energy Progress East	63.2 TWh	554
#18	Salt River Project Agricultural Improvement and Power District	58.9 TWh	45
#19	PacifiCorp East	52.7 TWh	204