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	Dec 2024
Annual Generation	103.6 TWh
Power Plants	1,487
Utilities	782
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 \| 57.4% Nuclear \| 25.1% Water \| 7.4% Other Fuel \| 4.5% Wind \| 3.3% Solar \| 1.2% Coal \| 0.2%

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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
Mainely Solar (Wyman Hill Solar LLC)	Wyman Hill Solar, LLC	Rumford, ME	4 GWh	Nov 2022	Dec 2023	Solar
Woods Hill Solar	Woods Hill Solar, LLC	Pomfret, CT	23 GWh	Nov 2018	Sep 2024	Solar
Woodland Avenue Solar 1	Woodland Avenue Solar 1, LLC	Seekonk, MA	8 GWh	Jul 2020	Dec 2023	Solar
New Milford Gas Recovery	WM Renewable Energy LLC	New Milford, CT	5 GWh	Apr 2008	Dec 2023	Landfill Gas
Turnkey Landfill Gas Recovery	WM Renewable Energy LLC	Rochester, NH	45 GWh	Jan 1992	Dec 2023	Landfill Gas
Fitchburg Gas Recovery	WM Renewable Energy LLC	Westminster, MA	31 GWh	Sep 2007	Dec 2023	Landfill Gas
Waste Management Crossroads LFGTE	WM Renewable Energy LLC	Norridgewock, ME	20 GWh	Feb 2009	Dec 2023	Landfill Gas
Wind Colebrook South	Wind Colebrook South	Colebrook, CT	10 GWh	Oct 2015	Sep 2024	Wind
Wilmarth Solar	Wilmarth Lane Solar 1, LLC	Plainville, MA	8 GWh	Jan 2020	Dec 2023	Solar
Williamsville Hybrid CSG	Williamsville Road LLC	Hubbardston, MA	7 GWh	Aug 2021	Dec 2023	Solar
White Rock Road LLC	White Rock Road LLC	Westerly, RI	10 GWh	Nov 2022	Dec 2023	Solar
Wheelabrator Millbury Facility	Wheelabrator Environmental Systems	Millbury, MA	320 GWh	Aug 1987	Sep 2024	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Wheelabrator Bridgeport	Wheelabrator Environmental Systems	Bridgeport, CT	454 GWh	Jun 1988	Sep 2024	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Wheelabrator Concord Facility	Wheelabrator Environmental Systems	Concord, NH	92 GWh	Mar 1989	Sep 2024	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Wheelabrator North Andover	Wheelabrator Environmental Systems	North Andover, MA	241 GWh	Apr 1985	Sep 2024	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Wheelabrator Saugus	Wheelabrator Environmental Systems	Saugus, MA	225 GWh	Jul 1985	Sep 2024	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Wheelabrator Lisbon	Wheelabrator Environmental Systems	Lisbon, CT	100 GWh	Sep 1995	Sep 2024	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 2023	Solar
Westminster Renewables, LLC CSG	Westminster Renewables, LLC	Westminster, MA	2 GWh	Sep 2018	Dec 2023	Solar
Cottage Street Solar Facility	Western Massachusetts Electric Company	Springfield, MA	3 GWh	Apr 2014	Sep 2024	Solar
Indian Orchard PV Facility	Western Massachusetts Electric Company	Springfield, MA	3 GWh	Nov 2011	Dec 2023	Solar
Silver Lake Solar Photovoltaic Facility	Western Massachusetts Electric Company	Pittsfield, MA	1 GWh	Nov 2010	Dec 2023	Solar
Westbrook Energy Center Power Plant	Westbrook Energy Center	Westbrook, ME	3 TWh	Apr 2001	Sep 2024	Natural Gas
Niagara Bottling - Bloomfield	Westbound Solar 3, LLC	Bloomfield, CT	4 GWh	Oct 2022	Dec 2023	Solar
Wesleyan University Cogen 1	Wesleyan University	Middletown, CT	10 GWh	Jan 2009	Dec 2023	Natural Gas
Wellesley College Central Utility Plant	Wellesley College	Wellesley, MA	480 MWh	May 1985	Dec 2023	Natural Gas
WED Shun III, LLC	WED Shun III, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2023	Wind
WED Shun II, LLC	WED Shun II, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2023	Wind
WED Shun I, LLC	WED Shun I, LLC	Johnston, RI	6 GWh	Dec 2018	Aug 2024	Wind
WED Plainfield, LLC	WED Plainfield, LLC	Johnston, RI	5 GWh	Dec 2018	Dec 2023	Wind
WED Plainfield III, LLC	WED Plainfield III, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2023	Wind
WED Plainfield II, LLC	WED Plainfield II, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2023	Wind
WED NK Green	WED NK Green LLC	North Kingstown, RI	2 GWh	Feb 2012	Dec 2023	Wind
WED GW Solar, LLC	WED GW Solar, LLC CSG	Lincoln, RI	4 GWh	Dec 2018	Dec 2023	Solar
WED Green Hill, LLC	WED Green Hill, LLC	Johnston, RI	6 GWh	Dec 2018	Sep 2024	Wind
WED Coventry 2	WED Coventry Two, LLC	Coventry, RI	6 GWh	Jul 2016	Sep 2024	Wind
WED Coventry 3	WED Coventry Three, LLC	Coventry, RI	2 GWh	Jul 2016	Dec 2023	Wind
WED Coventry Seven, LLC	WED Coventry Seven, LLC	Coventry, RI	5 GWh	Nov 2020	Dec 2023	Solar
WED Coventry 1	WED Coventry One, LLC	Coventry, RI	2 GWh	Sep 2016	Dec 2023	Wind
WED Coventry 4	WED Coventry Four, LLC	Coventry, RI	2 GWh	Jul 2016	Dec 2023	Wind
Webster Solar	Webster Solar, LLC	Webster, MA	1 GWh	Nov 2017	Dec 2023	Solar
Silver Maple	WEB Silver Maple Wind LLC	Clifton, ME	52 GWh	Sep 2022	Dec 2023	Wind
WEB Brookfield	WEB Brookfield Solar LLC	Brookfield, MA	6 GWh	Nov 2021	Dec 2023	Solar
Brimfield	WEB Brimfield Solar LLC	Brimfield, MA	3 GWh	Nov 2021	Dec 2023	Solar
Weaver Wind	Weaver Wind, LLC (Longroad)	Township 16, ME	195 GWh	Nov 2020	Sep 2024	Wind
Waterside Power, LLC	Waterside Power, LLC	Stamford, CT	2 GWh	May 2003	Dec 2023	Distillate Fuel Oil
Coventry Clean Energy Corporation	Washington Electric Coop - (VT)	Coventry, VT	52 GWh	Jun 2005	Dec 2023	Landfill Gas
Wrightsville Hydro Plant	Washington Electric Coop - (VT)	Montpelier, VT	2 GWh	Aug 1985	Dec 2023	Water
Ware Palmer Road Solar LLC CSG	Ware Palmer Road Solar LLC	Ware, MA	4 GWh	May 2021	Dec 2023	Solar
Walpole Solar 2	Walpole Solar 2, LLC	Walpole, MA	4 GWh	Mar 2014	Dec 2023	Solar
Wallingford Solar	Wallingford Renewable Energy, LLC	Wallingford, CT	22 GWh	Aug 2021	Dec 2023	Solar
Wallingford Energy	Wallingford Energy LLC	Wallingford, CT	161 GWh	Jul 2001	Dec 2023	Natural Gas
Wachusett Solar	Wachusett Solar, LLC	Rutland, MA	3 GWh	Jul 2019	Dec 2023	Solar
Hopkinton Phase 2	Vista Solar, Inc.	Ashaway, RI	4 GWh	Aug 2020	Dec 2023	Solar
West Tisbury Generating Facility	Vineyard Reliability LLC	West Tisbury, MA	2 GWh	Dec 1974	Dec 2023	Distillate Fuel Oil
Oak Bluffs Diesel Generating Facility	Vineyard Reliability LLC	Oak Bluffs, MA	1 GWh	Dec 1968	Dec 2023	Distillate Fuel Oil
Highgate Falls	Village of Swanton - (VT)	Highgate, VT	50 GWh	Jul 1923	Dec 2023	Water
Cadys Falls	Village of Morrisville - (VT)	Morrisville, VT	236 MWh	Jul 1914	Apr 2023	Water
Morrisville	Village of Morrisville - (VT)	Morrisville, VT	6 GWh	Jul 1924	Dec 2023	Water
W K Sanders	Village of Morrisville - (VT)	Hyde Park, VT	915 MWh	Jun 1983	Dec 2023	Water
VPPSA Project 10	Vermont Public Power Supply Authority	Swanton, VT	908 MWh	Apr 2010	Dec 2023	Distillate Fuel Oil
Ventura	Ventura Drive Dartmouth Solar 1, LLC	Dartmouth, MA	2 GWh	May 2022	Dec 2023	Solar
Loring	VC Renewables	Limestone, ME	4 GWh	Apr 2023	Dec 2023	Solar
Caribou	VC Renewables	Caribou, ME	2 GWh	Jul 2023	Dec 2023	Solar
Cape Cod Air Force Station - 6 SWS	US Air Force	Sagamore, MA	6 GWh	Dec 2013	Sep 2024	Wind
Upton Community Solar	Upton Solar, LLC	Upton, MA	3 GWh	Aug 2017	Dec 2023	Solar
Univ of Massachusetts Medical Center	University of Massachusetts Medical	Worcester, MA	68 GWh	Mar 1974	Dec 2023	Natural Gas : 97.4% Residual Fuel Oil : 2.4%
UCONN Cogen Facility	University of Connecticut	Storrs, CT	123 GWh	Feb 2006	Sep 2024	Natural Gas : 99.7%
Pratt & Whitney	United Technologies	East Hartford, CT	129 GWh	Dec 1991	Aug 2024	Natural Gas : 99.8%
UI RCP New Haven Fuel Cell	United Illuminating Co	New Haven, CT	19 GWh	Jul 2015	Sep 2024	Natural Gas
UI RCP Bridgeport Seaside	United Illuminating Co	Bridgeport, CT	20 GWh	Oct 2015	Sep 2024	Natural Gas : 93.3% Solar : 6.7%
UI RCP Woodbridge FC	United Illuminating Co	Woodbridge, CT	16 GWh	Nov 2016	Dec 2023	Natural Gas
UMass Boston	UMass Boston	Dorchester, MA	659 MWh	Dec 1971	Dec 2023	Solar : 91.2% Distillate Fuel Oil : 8.8%
UDR Glastonbury Fuel Cell	UIL Distributed Resources, LLC	Glastonbury, CT	21 GWh	Jan 2016	Dec 2023	Natural Gas
UB Fuel Cell	UB Fuel Cell	Bridgeport, CT	10 GWh	Mar 2015	Dec 2023	Natural Gas
West Boylston Community Shared Solar	Town of West Boylston - (MA)	West Boylston, MA	2 GWh	Nov 2016	Dec 2023	Solar
Nebraska Valley Solar Farm	Town of Stowe- (VT)	Stowe, VT	1 GWh	Jul 2016	Dec 2023	Solar
Stafford MS Ground Mount Community Solar	Town of Stafford - (CT)	Stafford, CT	3 GWh	Jun 2016	Dec 2023	Solar
Centech Gas Generator	Town of Shrewsbury - (MA)	Shrewsbury, MA	340 MWh	Mar 2019	Dec 2023	Natural Gas
Princeton Wind Farm	Town of Princeton - (MA)	Princeton, MA	3 GWh	Dec 2009	Dec 2023	Wind
Town of Otis Wind Energy Project	Town of Otis	Otis, MA	3 GWh	Feb 2018	Dec 2023	Wind
Wilkins Station	Town of Marblehead - (MA)	Marblehead, MA	78 MWh	Oct 1975	Dec 2023	Distillate Fuel Oil
High Street Station	Town of Ipswich - (MA)	Ipswich, MA	28 MWh	May 1937	Dec 2023	Natural Gas : 75.8% Distillate Fuel Oil : 24.2%
Ipswich Wind Turbine	Town of Ipswich - (MA)	Ipswich, MA	3 GWh	Apr 2011	Dec 2023	Wind
Cherry Street	Town of Hudson - (MA)	Hudson, MA	417 MWh	Apr 1951	Dec 2023	Distillate Fuel Oil : 73.9% Natural Gas : 26.1%
Town of Foxborough - Landfill (SREC II) CSG	Town of Foxborough - Landfill (SREC II)	Foxborough, MA	2 GWh	Jul 2017	Dec 2023	Solar
Potter Station 2	Town of Braintree - (MA)	Braintree, MA	32 GWh	Jun 1963	Dec 2023	Natural Gas : 88.2% Distillate Fuel Oil : 11.8%
Town of Amherst Solar	Town of Amherst Solar, LLC	Amherst, MA	4 GWh	Jul 2022	Dec 2023	Solar
Toray Plastic America's CHP Plant	Toray Plastics America	North Kingstown, RI	157 GWh	Dec 2002	Dec 2023	Natural Gas
Pejepscot Hydroelectric Project	Topsham Hydro Partners	Topsham, ME	71 GWh	Oct 1987	Dec 2023	Water
Tiverton Power Plant	Tiverton Power LLC	Tiverton, RI	2 TWh	Feb 2000	Dec 2023	Natural Gas
Three Corners Solar	Three Corners Solar, LLC	Unity, ME	69 GWh	-	Sep 2024	Solar
Norden 1-3	Third Taxing District of Norwalk	Norwalk, CT	42 MWh	May 2004	Dec 2022	Distillate Fuel Oil
Theodore Drive Community Solar	Theodore Drive Solar, LLC	Westminster, MA	2 GWh	Feb 2018	Dec 2023	Solar
Smith College Central Heating Plant	The Trustees of Smith College	Northampton, MA	15 GWh	Sep 2008	Dec 2023	Natural Gas
Great Falls (VT)	The Town of Lyndon Electric Department	Lyndon, VT	3 GWh	Jul 1915	Dec 2023	Water
Gillette SBMC	The Gillette Company	Boston, MA	61 GWh	Jan 1971	Sep 2024	Natural Gas : 99.9%
Town of Branford	Tesla Inc.	Branford, CT	2 GWh	May 2018	Dec 2023	Solar
CMEEC - Rogers Rd Solar	Tesla Inc.	Norwich, CT	2 GWh	Jan 2017	Dec 2023	Solar
CMEEC - Norwich Stott St Solar Hybrid	Tesla Inc.	Norwich, CT	2 GWh	Nov 2016	Dec 2023	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	900.7 GWh	4
#25	Dominion Energy South Carolina, Inc.	26.0 TWh	85
#13	Duke Energy Carolinas	110.8 TWh	556
#17	Duke Energy Progress East	63.1 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	129.6 TWh	1,100
#1	PJM Interconnection, LLC	842.1 TWh	2,305
#31	South Carolina Public Service Authority	17.8 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	191.4 TWh	1,943
#9	Tennessee Valley Authority	157.5 TWh	170
#10	Florida Power & Light Co.	147.4 TWh	159
#12	New York Independent System Operator	129.6 TWh	1,100
#13	Duke Energy Carolinas	110.8 TWh	556
#15	ISO New England	103.6 TWh	1,487
#16	Bonneville Power Administration	79.9 TWh	158
#17	Duke Energy Progress East	63.1 TWh	554
#18	Salt River Project Agricultural Improvement and Power District	58.9 TWh	45
#19	PacifiCorp East	52.9 TWh	204