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	May 2025
Annual Generation	103.6 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 \| 57.4% Nuclear \| 24.9% Water \| 6.1% Other Fuel \| 4.5% Wind \| 3.5% Solar \| 1.4% Coal \| 0.3%

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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
Bridgewater Power LP	Bridgewater Power Co LP	Bridgewater, NH	109 GWh	Jul 1987	Dec 2023	Wood/Wood Waste Solids : 99.8%
J C McNeil	City of Burlington Electric - (VT)	Burlington, VT	203 GWh	May 1984	Feb 2025	Wood/Wood Waste Solids : 99.8%
Indeck West Enfield Energy Center	Stored Solar J&WE	West Enfield, ME	13 GWh	Nov 1987	Dec 2023	Wood/Wood Waste Solids : 99.7%
Plainfield Renewable Energy LLC	Plainfield Renewable Energy, LLC	Plainfield, CT	234 GWh	Nov 2013	Dec 2023	Wood/Wood Waste Solids : 99.6%
Burgess BioPower	Berlin Station, LLC	Berlin, NH	496 GWh	Oct 2013	Dec 2023	Wood/Wood Waste Solids : 98.3% Distillate Fuel Oil : 1.7%
NE Renewable Fitchburg, LLC	NE Renewable Fitchburg, LLC	Westminster, MA	36 GWh	Jul 1992	Dec 2023	Wood/Wood Waste Solids : 97.6% Natural Gas : 2.4%
Middlebury College	Middlebury College Biomass	Middlebury, VT	2 GWh	Dec 1979	Feb 2025	Wood/Wood Waste Solids : 69.3% Natural Gas : 30.7%
Red Shield Envir Old Town Facility	ND Paper, Inc.	Old Town, ME	66 GWh	Jun 1965	Apr 2023	Wood/Wood Waste Solids : 63.4% Black Liquor : 22.1% Natural Gas : 11.8% Residual Fuel Oil : 2.7%
Ryegate Associates, LLC	Ryegate Associates, LLC	East Ryegate, VT	161 GWh	Aug 1992	Dec 2023	Wood/Wood Waste Solids
NE Renewable Springfield, LLC	NE Renewable Springfield, LLC	Springfield, NH	32 GWh	Nov 1987	Dec 2023	Wood/Wood Waste Solids
NE Renewable Whitefield, LLC	NE Renewable Whitefield, LLC	Whitefield, NH	13 GWh	Feb 1988	Dec 2023	Wood/Wood Waste Solids
Athens Energy	Athens Energy, LLC	Athens, ME	60 GWh	Sep 2016	Dec 2023	Wood/Wood Waste Solids
ReEnergy Stratton LLC	ReEnergy Stratton LLC	Stratton, ME	177 GWh	Oct 1989	Dec 2023	Wood/Wood Waste Solids
Georges River Energy	Robbins Lumber Inc	Searsmont, ME	40 GWh	Nov 2018	Dec 2023	Wood/Wood Waste Solids
ReEnergy Livermore Falls	ReEnergy Livermore Falls	Livermore Falls, ME	223 GWh	Jul 1992	Dec 2023	Wood/Wood Waste Solids
Saddleback Ridge Wind Farm	CPV Saddleback Ridge Wind, LLC	Carthage, ME	83 GWh	Nov 2014	Dec 2023	Wind
Town of Otis Wind Energy Project	Town of Otis	Otis, MA	3 GWh	Feb 2018	Dec 2023	Wind
Weaver Wind	Weaver Wind, LLC (Longroad)	Township 16, ME	214 GWh	Nov 2020	Feb 2025	Wind
Cape Cod Air Force Station - 6 SWS	US Air Force	Sagamore, MA	4 GWh	Dec 2013	Feb 2025	Wind
Future Generation Wind	Consolidated Edison Solutions Inc.	Plymouth, MA	12 GWh	Jul 2016	Dec 2023	Wind
Wind Colebrook South	Wind Colebrook South	Colebrook, CT	11 GWh	Oct 2015	Feb 2025	Wind
NBC Field's Point Wind Farm	Narragansett Bay Commission	Providence, RI	6 GWh	Sep 2012	Feb 2025	Wind
Scituate Wind	Scituate Wind LLC	Scituate, MA	2 GWh	Feb 2012	Dec 2023	Wind
Fairhaven Wind	Fairhaven Wind LLC	Fairhaven, MA	3 GWh	Mar 2012	Dec 2023	Wind
Georgia Mountain Community Wind Farm	Greenbacker Renewable Energy Corporation	Milton, VT	28 GWh	Nov 2012	Feb 2025	Wind
WED Coventry 4	WED Coventry Four, LLC	Coventry, RI	2 GWh	Jul 2016	Dec 2023	Wind
Dept of Corrections NCCI Wind	Dept of Corrections NCCI Wind	Gardner, MA	6 GWh	Oct 2013	Feb 2025	Wind
WED NK Green	WED NK Green LLC	North Kingstown, RI	2 GWh	Feb 2012	Dec 2023	Wind
Deerfield Wind LLC	Avangrid Renewables LLC	Searsburg, VT	88 GWh	Nov 2017	Feb 2025	Wind
Jericho Power	Jericho Power LLC	Berlin, NH	21 GWh	Dec 2015	Feb 2025	Wind
Passadumkeag Windpark LLC	Southern Power Co	Greenbush, ME	131 GWh	Jun 2016	Feb 2025	Wind
WED Coventry 1	WED Coventry One, LLC	Coventry, RI	2 GWh	Sep 2016	Dec 2023	Wind
Camelot Wind LLC	Camelot Wind LLC	Plymouth, MA	2 GWh	Sep 2012	Dec 2023	Wind
WED Coventry 2	WED Coventry Two, LLC	Coventry, RI	8 GWh	Jul 2016	Feb 2025	Wind
WED Coventry 3	WED Coventry Three, LLC	Coventry, RI	2 GWh	Jul 2016	Dec 2023	Wind
Equity Industrial Turbines	Equity Industrial Turbines	Gloucester, MA	7 GWh	Nov 2012	Dec 2022	Wind
WED Portsmouth One, LLC	Greenbacker Renewable Energy Corporation	Portsmouth, RI	4 GWh	Jul 2016	Dec 2023	Wind
WED Coventry 5	Greenbacker Renewable Energy Corporation	Coventry, RI	2 GWh	Feb 2017	Dec 2023	Wind
WED Coventry 6	Greenbacker Renewable Energy Corporation	Coventry, RI	7 GWh	Jul 2016	Feb 2025	Wind
Hancock Wind Plant	Onward Energy	T22 MD, ME	123 GWh	Nov 2016	Feb 2025	Wind
Searsburg Wind Turbine	Green Mountain Power Corp	Searsburg, VT	10 GWh	May 1997	Feb 2025	Wind
Princeton Wind Farm	Town of Princeton - (MA)	Princeton, MA	3 GWh	Dec 2009	Dec 2023	Wind
Green Providence Wind II, LLC	Green Providence Wind II, LLC	Providence, RI	3 GWh	Nov 2021	Dec 2023	Wind
Green Providence Wind I, LLC	Green Providence Wind I, LLC	Providence, RI	1 GWh	Nov 2021	Dec 2023	Wind
Antrim Wind	Antrim Wind Energy LLC	Antrim, NH	74 GWh	Nov 2019	Feb 2025	Wind
New England Wind LLC	Avangrid Renewables LLC	Florida, MA	68 GWh	Nov 2012	Feb 2025	Wind
Oakfield Wind Project	Onward Energy	City of Oakfield, ME	352 GWh	Sep 2015	Feb 2025	Wind
Spruce Mountain WInd	CPV Spruce Mountain Wind LLC	Bryant Pond, ME	53 GWh	Nov 2011	Dec 2023	Wind
Mt Wachusett Community College	Mt Wachusett Community College	Gardner, MA	5 GWh	Feb 2011	Feb 2025	Wind
Sheffield Wind	Evergreen Wind, LLC	Sheffield, VT	74 GWh	Sep 2011	Feb 2025	Wind
Bull Hill Wind Project	Evergreen Wind, LLC	Eastbrook, ME	82 GWh	Sep 2012	Dec 2023	Wind
Beaver Ridge Wind	CPV Beaver Ridge Wind LLC	Freedom, ME	10 GWh	Oct 2008	Dec 2023	Wind
Granite Reliable Power	NexteraEnergy	Dummer, NH	201 GWh	Jan 2012	Feb 2025	Wind
MA Military Reservation Wind Project	Air Force Civil Engineer Center	Otis ANG Base Bourne, MA	10 GWh	Nov 2009	Dec 2023	Wind
Fox Island Wind LLC	Fox Island Wind LLC	Vinalhaven, ME	6 GWh	Oct 2009	Dec 2023	Wind
WED Green Hill, LLC	WED Green Hill, LLC	Johnston, RI	7 GWh	Dec 2018	Feb 2025	Wind
Notus Wind 1	Notus Clean Energy LLC	E. Falmouth, MA	4 GWh	Jun 2010	Dec 2023	Wind
Bingham Wind	Onward Energy	Bingham, ME	485 GWh	Nov 2016	Feb 2025	Wind
Record Hill Wind	Record Hill Wind LLC	Roxbury, ME	111 GWh	Dec 2011	Dec 2023	Wind
Kingdom Community Wind	Green Mountain Power Corp	Lowell, VT	179 GWh	Oct 2012	Feb 2025	Wind
Ipswich Wind Turbine	Town of Ipswich - (MA)	Ipswich, MA	3 GWh	Apr 2011	Dec 2023	Wind
Jiminy Peak Wind QF	Jiminy Peak Mountain Resort, LLC	Hancock, MA	1 MWh	Jul 2007	Dec 2022	Wind
Berkshire Wind Power Project	Massachusetts Mun Wholes Electric Co	Lanesboro, MA	29 GWh	Apr 2011	Feb 2025	Wind
Canton Mountain Wind	CPV Canton Mountain Wind LLC	Canton, ME	50 GWh	Oct 2017	Dec 2023	Wind
RoxWind	RoxWind LLC	Roxbury, ME	10 GWh	Oct 2021	Dec 2023	Wind
WED Plainfield, LLC	WED Plainfield, LLC	Johnston, RI	5 GWh	Dec 2018	Dec 2023	Wind
Stetson Wind II	Evergreen Wind, LLC	Danforth, ME	46 GWh	Feb 2010	Dec 2023	Wind
WED Plainfield III, LLC	WED Plainfield III, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2023	Wind
WED Shun I, LLC	WED Shun I, LLC	Johnston, RI	7 GWh	Dec 2018	Feb 2025	Wind
WED Plainfield II, LLC	WED Plainfield II, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2023	Wind
Holiday Hill Community Wind	Greenbacker Renewable Energy Corporation	Russell, MA	10 GWh	Nov 2019	Dec 2023	Wind
WED Shun II, LLC	WED Shun II, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2023	Wind
WED Shun III, LLC	WED Shun III, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2023	Wind
Groton Wind LLC	Avangrid Renewables LLC	Groton, NH	111 GWh	Nov 2012	Feb 2025	Wind
Pisgah Mountain Wind	Pisgah Mountain, LLC	Clifton, ME	24 GWh	Nov 2016	Dec 2023	Wind
Lempster Wind LLC	Avangrid Renewables LLC	Lempster, NH	65 GWh	Nov 2008	Feb 2025	Wind
Charlestown Wind Turbine	MWRA Charlestown	Charlestown, MA	1 GWh	Sep 2011	Dec 2023	Wind
Hull Wind II	Hull Municipal Light Plant	Hull, MA	3 GWh	Apr 2006	Apr 2023	Wind
Kibby Wind Facility	Helix Maine Wind Development, LLC	Chain of Ponds, ME	271 GWh	Sep 2009	Feb 2025	Wind
Block Island Wind Farm	Deepwater Wind Block Island LLC	NA, RI	90 GWh	Nov 2016	Feb 2025	Wind
Stetson Wind I	Evergreen Wind, LLC	Danforth, ME	107 GWh	Dec 2008	Dec 2023	Wind
Rollins Wind Project	Evergreen Wind, LLC	Winn Village, ME	132 GWh	Jun 2011	Dec 2023	Wind
Silver Maple	WEB Silver Maple Wind LLC	Clifton, ME	52 GWh	Sep 2022	Dec 2023	Wind
Essex Junction 19	Green Mountain Power Corp	Essex Junction, VT	39 GWh	Dec 1916	Feb 2025	Water : 99.6%
Tunnel	FirstLight Power Resources Services LLC	Preston, CT	12 GWh	Dec 1918	Dec 2023	Water : 98.2% Jet Fuel : 1.8%
Rainbow (CT)	Farmington River Power Company	Windsor, CT	25 GWh	Nov 1925	Feb 2025	Water
Gregg Falls	Eagle Creek Renewable Energy, LLC	Goffstown, NH	14 GWh	Nov 1985	Dec 2023	Water
Penacook Lower Falls	Briar-Hydro Associates	Boscawen, NH	23 GWh	Jul 1983	Dec 2023	Water
Falls Village	FirstLight Power Resources Services LLC	Falls Village, CT	52 GWh	Dec 1913	Dec 2023	Water
Rolfe Canal Hydro	Briar-Hydro Associates	Penacook, NH	28 GWh	Nov 1987	Dec 2023	Water
Penacook Upper Falls Hydro	Briar-Hydro Associates	Penacook, NH	17 GWh	Nov 1986	Dec 2023	Water
Newfound Hydroelectric	Eagle Creek Renewable Energy, LLC	Bristol, NH	8 GWh	Nov 1983	Dec 2023	Water
S D Warren Westbrook	Elevate Power Management LLC	Westbrook, ME	33 GWh	Dec 1902	Dec 2023	Water
Pumpkin Hill	KEI (Maine) Power Management (II) LLC	Lowell, ME	5 GWh	Feb 1987	Dec 2023	Water
Pontook Hydro Facility	Pontook Operating LP	Dummer, NH	58 GWh	Nov 1986	Dec 2023	Water
Huntington Falls	Green Mountain Power Corp	Weybridge, VT	33 GWh	Sep 1988	Dec 2023	Water
Somersworth Lower Great Dam	Green Mountain Power Corp	Somersworth, NH	5 GWh	Jun 1985	Dec 2023	Water
Salmon Falls	Green Mountain Power Corp	South Berwick, ME	5 GWh	Jun 1986	Dec 2023	Water
Orono Hydro Station	Brookfield Black Bear Hydro, LLC	Orono, ME	12 GWh	Dec 2008	Dec 2023	Water
Boltonville Hydro Associates	Boltonville Hydro Associates	Boltonville, VT	3 GWh	Jun 1984	Dec 2023	Water

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	742.1 GWh	4
#25	Dominion Energy South Carolina, Inc.	26.1 TWh	85
#13	Duke Energy Carolinas	111.3 TWh	556
#17	Duke Energy Progress East	65.3 TWh	554
#52	Duke Energy Progress West	4.2 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	34.0 TWh	20
#12	New York Independent System Operator	130.9 TWh	1,100
#1	PJM Interconnection, LLC	859.4 TWh	2,305
#29	South Carolina Public Service Authority	19.3 TWh	33
#60	Southeastern Power Administration	1.4 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	189.5 TWh	1,943
#8	Tennessee Valley Authority	158.9 TWh	170
#10	Florida Power & Light Co.	148.5 TWh	159
#12	New York Independent System Operator	130.9 TWh	1,100
#13	Duke Energy Carolinas	111.3 TWh	556
#15	ISO New England	103.6 TWh	1,487
#16	Bonneville Power Administration	83.0 TWh	158
#17	Duke Energy Progress East	65.3 TWh	554
#18	Salt River Project Agricultural Improvement and Power District	58.5 TWh	45
#19	PacifiCorp East	57.0 TWh	204