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 #11 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
J C McNeil	City of Burlington Electric - (VT)	Burlington, VT	234 GWh	May 1984	Aug 2025	Wood/Wood Waste Solids : 99.9%
Indeck West Enfield Energy Center	Stored Solar J&WE	West Enfield, ME	51 GWh	Nov 1987	Dec 2024	Wood/Wood Waste Solids : 99.9%
Plainfield Renewable Energy LLC	Plainfield Renewable Energy, LLC	Plainfield, CT	247 GWh	Nov 2013	Oct 2024	Wood/Wood Waste Solids : 99.5% Other Biomass Liquids : 0.5%
Bridgewater Power LP	Bridgewater Power Co LP	Bridgewater, NH	93 GWh	Jul 1987	Dec 2024	Wood/Wood Waste Solids : 99.5%
NE Renewable Fitchburg, LLC	NE Renewable Fitchburg, LLC	Westminster, MA	61 GWh	Jul 1992	Dec 2024	Wood/Wood Waste Solids : 98.1% Natural Gas : 1.9%
Middlebury College	Middlebury College Biomass	Middlebury, VT	2 GWh	Dec 1979	Aug 2025	Wood/Wood Waste Solids : 65.2% Natural Gas : 34.8%
Ryegate Associates, LLC	Ryegate Associates, LLC	East Ryegate, VT	150 GWh	Aug 1992	Dec 2024	Wood/Wood Waste Solids
NE Renewable Springfield, LLC	NE Renewable Springfield, LLC	Springfield, NH	33 GWh	Nov 1987	Dec 2024	Wood/Wood Waste Solids
Athens Energy	Athens Energy, LLC	Athens, ME	58 GWh	Sep 2016	Dec 2024	Wood/Wood Waste Solids
Burgess BioPower	Berlin Station, LLC	Berlin, NH	349 GWh	Oct 2013	Dec 2024	Wood/Wood Waste Solids
ReEnergy Stratton LLC	ReEnergy Stratton LLC	Stratton, ME	203 GWh	Oct 1989	Dec 2024	Wood/Wood Waste Solids
NE Renewable Whitefield, LLC	NE Renewable Whitefield, LLC	Whitefield, NH	54 GWh	Feb 1988	Dec 2024	Wood/Wood Waste Solids
ReEnergy Livermore Falls	ReEnergy Livermore Falls	Livermore Falls, ME	267 GWh	Jul 1992	Dec 2024	Wood/Wood Waste Solids
Georges River Energy	Robbins Lumber Inc	Searsmont, ME	52 GWh	Nov 2018	Dec 2024	Wood/Wood Waste Solids
Moscow	Greenbacker Renewable Energy Corporation	Moscow, ME	4 GWh	-	Jul 2025	Wind
Green Providence Wind II, LLC	Green Providence Wind II, LLC	Providence, RI	4 GWh	Nov 2021	Dec 2024	Wind
Green Providence Wind I, LLC	Green Providence Wind I, LLC	Providence, RI	2 GWh	Nov 2021	Dec 2024	Wind
Silver Maple	WEB Silver Maple Wind LLC	Clifton, ME	59 GWh	Sep 2022	Dec 2024	Wind
Downeast Wind	Downeast Wind, LLC	Columbia, ME	125 GWh	-	Aug 2025	Wind
MA Military Reservation Wind Project	Air Force Civil Engineer Center	Otis ANG Base Bourne, MA	10 GWh	Nov 2009	Dec 2024	Wind
Fox Island Wind LLC	Fox Island Wind LLC	Vinalhaven, ME	8 GWh	Oct 2009	Dec 2024	Wind
Spruce Mountain WInd	CPV Spruce Mountain Wind LLC	Bryant Pond, ME	54 GWh	Nov 2011	Dec 2024	Wind
Mt Wachusett Community College	Mt Wachusett Community College	Gardner, MA	4 GWh	Feb 2011	Aug 2025	Wind
Granite Reliable Power	NexteraEnergy	Dummer, NH	198 GWh	Jan 2012	Aug 2025	Wind
Jericho Power	Jericho Power LLC	Berlin, NH	22 GWh	Dec 2015	Aug 2025	Wind
Kingdom Community Wind	Green Mountain Power Corp	Lowell, VT	182 GWh	Oct 2012	Aug 2025	Wind
Ipswich Wind Turbine	Town of Ipswich - (MA)	Ipswich, MA	2 GWh	Apr 2011	Dec 2024	Wind
Berkshire Wind Power Project	Massachusetts Mun Wholes Electric Co	Lanesboro, MA	38 GWh	Apr 2011	Aug 2025	Wind
Georgia Mountain Community Wind Farm	Greenbacker Renewable Energy Corporation	Milton, VT	30 GWh	Nov 2012	Aug 2025	Wind
Record Hill Wind	Record Hill Wind LLC	Roxbury, ME	115 GWh	Dec 2011	Dec 2024	Wind
Bingham Wind	Onward Energy	Bingham, ME	488 GWh	Nov 2016	Aug 2025	Wind
Passadumkeag Windpark LLC	Southern Power Co	Greenbush, ME	139 GWh	Jun 2016	Aug 2025	Wind
Notus Wind 1	Notus Clean Energy LLC	E. Falmouth, MA	4 GWh	Jun 2010	Dec 2024	Wind
New England Wind LLC	Avangrid Power LLC	Florida, MA	76 GWh	Nov 2012	Aug 2025	Wind
WED Shun III, LLC	WED Shun III, LLC	Johnston, RI	7 GWh	Dec 2018	Dec 2024	Wind
WED Green Hill, LLC	WED Green Hill, LLC	Johnston, RI	7 GWh	Dec 2018	Aug 2025	Wind
WED Plainfield II, LLC	WED Plainfield II, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2024	Wind
WED Plainfield III, LLC	WED Plainfield III, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2024	Wind
WED Plainfield, LLC	WED Plainfield, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2024	Wind
Hancock Wind Plant	Onward Energy	T22 MD, ME	121 GWh	Nov 2016	Aug 2025	Wind
WED Shun I, LLC	WED Shun I, LLC	Johnston, RI	7 GWh	Dec 2018	Aug 2025	Wind
Cape Cod Air Force Station - 6 SWS	US Air Force	Sagamore, MA	4 GWh	Dec 2013	Aug 2025	Wind
WED Shun II, LLC	WED Shun II, LLC	Johnston, RI	6 GWh	Dec 2018	Dec 2024	Wind
Block Island Wind Farm	Deepwater Wind Block Island LLC	NA, RI	87 GWh	Nov 2016	Aug 2025	Wind
Canton Mountain Wind	CPV Canton Mountain Wind LLC	Canton, ME	51 GWh	Oct 2017	Dec 2024	Wind
Town of Otis Wind Energy Project	Town of Otis	Otis, MA	3 GWh	Feb 2018	Dec 2023	Wind
WED Portsmouth One, LLC	Greenbacker Renewable Energy Corporation	Portsmouth, RI	4 GWh	Jul 2016	Dec 2024	Wind
Camelot Wind LLC	Camelot Wind LLC	Plymouth, MA	2 GWh	Sep 2012	Dec 2024	Wind
Dept of Corrections NCCI Wind	Dept of Corrections NCCI Wind	Gardner, MA	6 GWh	Oct 2013	Aug 2025	Wind
Groton Wind LLC	Avangrid Power LLC	Groton, NH	115 GWh	Nov 2012	Aug 2025	Wind
Charlestown Wind Turbine	MWRA Charlestown	Charlestown, MA	1 GWh	Sep 2011	Dec 2024	Wind
WED NK Green	WED NK Green LLC	North Kingstown, RI	2 GWh	Feb 2012	Dec 2024	Wind
Saddleback Ridge Wind Farm	CPV Saddleback Ridge Wind, LLC	Carthage, ME	83 GWh	Nov 2014	Dec 2024	Wind
Deerfield Wind LLC	Avangrid Power LLC	Searsburg, VT	95 GWh	Nov 2017	Aug 2025	Wind
Fairhaven Wind	Fairhaven Wind LLC	Fairhaven, MA	4 GWh	Mar 2012	Dec 2024	Wind
Scituate Wind	Scituate Wind LLC	Scituate, MA	2 GWh	Feb 2012	Dec 2024	Wind
NBC Field's Point Wind Farm	Narragansett Bay Commission	Providence, RI	7 GWh	Sep 2012	Aug 2025	Wind
Wind Colebrook South	Wind Colebrook South	Colebrook, CT	11 GWh	Oct 2015	Aug 2025	Wind
Searsburg Wind Turbine	Green Mountain Power Corp	Searsburg, VT	12 GWh	May 1997	Aug 2025	Wind
Princeton Wind Farm	Town of Princeton - (MA)	Princeton, MA	4 GWh	Dec 2009	Dec 2024	Wind
Antrim Wind	Antrim Wind Energy LLC	Antrim, NH	75 GWh	Nov 2019	Aug 2025	Wind
Future Generation Wind	Consolidated Edison Solutions Inc.	Plymouth, MA	14 GWh	Jul 2016	Dec 2024	Wind
Weaver Wind	Weaver Wind, LLC (Longroad)	Township 16, ME	226 GWh	Nov 2020	Aug 2025	Wind
Lempster Wind LLC	Avangrid Power LLC	Lempster, NH	67 GWh	Nov 2008	Aug 2025	Wind
Holiday Hill Community Wind	Greenbacker Renewable Energy Corporation	Russell, MA	10 GWh	Nov 2019	Dec 2024	Wind
Pisgah Mountain Wind	Pisgah Mountain, LLC	Clifton, ME	25 GWh	Nov 2016	Dec 2024	Wind
WED Coventry 6	Greenbacker Renewable Energy Corporation	Coventry, RI	8 GWh	Jul 2016	Aug 2025	Wind
Stetson Wind II	Evergreen Wind, LLC	Danforth, ME	50 GWh	Feb 2010	Dec 2024	Wind
Beaver Ridge Wind	CPV Beaver Ridge Wind LLC	Freedom, ME	10 GWh	Oct 2008	Dec 2024	Wind
Bull Hill Wind Project	Evergreen Wind, LLC	Eastbrook, ME	74 GWh	Sep 2012	Dec 2024	Wind
Sheffield Wind	Evergreen Wind, LLC	Sheffield, VT	74 GWh	Sep 2011	Aug 2025	Wind
WED Coventry 1	WED Coventry One, LLC	Coventry, RI	2 GWh	Sep 2016	Dec 2024	Wind
WED Coventry 2	WED Coventry Two, LLC	Coventry, RI	10 GWh	Jul 2016	Aug 2025	Wind
WED Coventry 3	WED Coventry Three, LLC	Coventry, RI	2 GWh	Jul 2016	Dec 2024	Wind
RoxWind	RoxWind LLC	Roxbury, ME	36 GWh	Oct 2021	Dec 2024	Wind
Oakfield Wind Project	Onward Energy	City of Oakfield, ME	363 GWh	Sep 2015	Aug 2025	Wind
Rollins Wind Project	Evergreen Wind, LLC	Winn Village, ME	136 GWh	Jun 2011	Dec 2024	Wind
WED Coventry 4	WED Coventry Four, LLC	Coventry, RI	2 GWh	Jul 2016	Dec 2024	Wind
Stetson Wind I	Evergreen Wind, LLC	Danforth, ME	121 GWh	Dec 2008	Dec 2024	Wind
WED Coventry 5	Greenbacker Renewable Energy Corporation	Coventry, RI	3 GWh	Feb 2017	Dec 2024	Wind
Kibby Wind Facility	Helix Maine Wind Development, LLC	Chain of Ponds, ME	268 GWh	Sep 2009	Aug 2025	Wind
Essex Junction 19	Green Mountain Power Corp	Essex Junction, VT	33 GWh	Dec 1916	Aug 2025	Water : 99.6%
Clement Dam Hydro LLC	Eagle Creek Renewable Energy, LLC	Tilton, NH	9 GWh	Nov 1984	Dec 2024	Water
Gilman Mill	Ampersand Gilman Hydro LP	Gilman, VT	4 GWh	Dec 1940	Dec 2024	Water
West Enfield Hydro	Brookfield Black Bear Hydro, LLC	West Enfield, ME	77 GWh	Mar 1988	Dec 2024	Water
Pepperell Hydro Power Plant	Eagle Creek Renewable Energy, LLC	Pepperell, MA	4 GWh	Dec 1919	Aug 2025	Water
Barker Lower	KEI (Maine) Power Management (III) LLC	Auburn, ME	4 GWh	Mar 1986	Dec 2024	Water
Benton Falls Associates	Essex Hydro Associates LLC	Benton, ME	4 GWh	Nov 1987	Dec 2024	Water
Milton Hydro	SFR Hydro Cor	Milton, NH	6 GWh	Dec 1913	Dec 2024	Water
Rumford Falls Hydro Facility	Brookfield Power New England	Rumford, ME	261 GWh	Dec 1917	Dec 2024	Water
Anson Abenaki Hydros	Eagle Creek Renewable Energy, LLC	Madison, ME	116 GWh	Dec 1949	Dec 2024	Water
International Paper Jay Hydro	Eagle Creek Renewable Energy, LLC	Jay, ME	7 GWh	Dec 1911	Dec 2024	Water
Pembroke Hydro	Eagle Creek Renewable Energy, LLC	Suncook, NH	7 GWh	Nov 1985	Dec 2024	Water
Sheldon Springs Hydroelectric	Central Rivers Power US, LLC	Sheldon Springs, VT	68 GWh	Jun 1988	Dec 2024	Water
Dodge Falls Associates	Dodge Falls Associates LP	Bath, NH	29 GWh	Nov 1990	Dec 2024	Water
Newfound Hydroelectric	Eagle Creek Renewable Energy, LLC	Bristol, NH	4 GWh	Nov 1983	Dec 2024	Water
Otis Hydro	Eagle Creek Renewable Energy, LLC	Livermore Falls, ME	27 GWh	Dec 1984	Aug 2025	Water
International Paper Riley Hydro	Eagle Creek Renewable Energy, LLC	Jay, ME	18 GWh	Nov 1981	Dec 2024	Water
International Paper Livermore Hydro	Eagle Creek Renewable Energy, LLC	Livermore Falls, ME	17 GWh	Dec 1909	Dec 2024	Water
China Mill Hydro	New Hampshire Hydro Associates	Allenstown, NH	3 GWh	Jun 1981	Dec 2024	Water

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	699.8 GWh	4
#25	Dominion Energy South Carolina, Inc.	25.7 TWh	87
#13	Duke Energy Carolinas	112.7 TWh	565
#17	Duke Energy Progress East	64.2 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	870.3 TWh	2,465
#29	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	188.1 TWh	2,075
#9	Tennessee Valley Authority	161.5 TWh	204
#10	Florida Power & Light Co.	148.6 TWh	187
#12	New York Independent System Operator	131.6 TWh	1,211
#13	Duke Energy Carolinas	112.7 TWh	565
#15	ISO New England	105.5 TWh	1,577
#16	Bonneville Power Administration	80.5 TWh	163
#17	Duke Energy Progress East	64.2 TWh	559
#18	PacifiCorp East	61.0 TWh	216
#19	Salt River Project Agricultural Improvement and Power District	60.2 TWh	48