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%

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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
Pfizer Groton Plant	Pfizer Inc	Groton, CT	70 GWh	Dec 1947	Sep 2024	Natural Gas : 98.0% Distillate Fuel Oil : 2.0%
Water Treatment 1 & 2	Connecticut Mun Elec Engy Coop	Groton, CT	375 MWh	Sep 2010	Sep 2024	Distillate Fuel Oil
Subase Microgrid Project	Connecticut Mun Elec Engy Coop	Groton, CT	34 GWh	Nov 2022	Dec 2023	Natural Gas
Pfizer Groton Fuel Cell	Groton Fuel Cell 1 LLC	Groton, CT	42 GWh	Sep 2016	Dec 2023	Natural Gas
Jackson Solar (CT)	Ecos Energy LLC	Griswold, CT	2 GWh	Nov 2019	Dec 2023	Solar
Sherman Solar	Ecos Energy LLC	Griswold, CT	2 GWh	Nov 2019	Dec 2023	Solar
Clinton Solar	Ecos Energy LLC	Griswold, CT	2 GWh	Apr 2021	Dec 2023	Solar
Cos Cob	Connecticut Jet Power LLC	Greenwich, CT	1 GWh	Aug 1969	Dec 2023	Kerosene
Greenfield Solar PV	NSTAR Electric Company	Greenfield, MA	3 GWh	Dec 2018	Dec 2023	Solar
Axio Green LLC	Altus Power America Management, LLC	Greenfield Township, MA	2 GWh	May 2012	Dec 2023	Solar
Passadumkeag Windpark LLC	Southern Power Co	Greenbush, ME	121 GWh	Jun 2016	Sep 2024	Wind
Manchester Community College North	Onyx Asset Services Group	Great Path, CT	2 GWh	Sep 2018	Dec 2023	Solar
Rail Trail	Altus Power America Management, LLC	Great Barrington, MA	3 GWh	Apr 2016	Dec 2023	Solar
Kearsarge GB	Kearsarge GB LLC	Great Barrington, MA	3 GWh	Jul 2018	Dec 2023	Solar
Rising Paper	Altus Power America Management, LLC	Great Barrington, MA	3 GWh	Apr 2016	Dec 2023	Solar
Nolan	Strata Manager, LLC	Great Barrington, MA	2 GWh	Oct 2017	Dec 2023	Solar
Cobble Mountain	City of Holyoke Gas and Electric Dept.	Granville, MA	11 GWh	Dec 1929	Dec 2023	Water
Granby LFG	Industrial Power Services Corp.	Granby, MA	3 GWh	Aug 2001	Dec 2023	Landfill Gas
Granby Solar, LLC CSG	Granby Solar, LLC	Granby, MA	6 GWh	Jun 2021	Dec 2023	Solar
Kearsarge Granby	Kearsarge Granby LLC	Granby, MA	4 GWh	Feb 2017	Dec 2023	Solar
BlueWave Capital - Grafton (SREC II)	TerraForm Solar XVII, LLC	Grafton, MA	2 GWh	Feb 2015	Dec 2023	Solar
Grafton Solar	CD US Solar MT 2 LLC	Grafton, MA	2 GWh	Sep 2013	Dec 2023	Solar
Grafton PV	MN8 Energy LLC	Grafton, MA	4 GWh	Sep 2016	Dec 2023	Solar
Orange County Solar Farm (NY)	Tesla Inc.	Goshen, NY	2 GWh	Apr 2017	Dec 2023	Solar
Glenmere Lake	AES Distributed Energy	Goshen, NY	4 GWh	May 2021	Dec 2023	Solar : 99.6%
Williamsburg	AES Distributed Energy	Goshen, MA	6 GWh	Jun 2019	Dec 2023	Solar
Gorham	Central Rivers Power NH, LLC	Gorham, NH	12 GWh	Jul 1917	Dec 2023	Water
North Gorham	Brookfield White Pine Hydro LLC	Gorham, ME	9 GWh	Dec 1924	Dec 2023	Water
CMEEC - Polaris Park Solar Hybrid	Tesla Inc.	Gordon, CT	5 GWh	Jul 2017	Dec 2023	Solar
Gregg Falls	Eagle Creek Renewable Energy, LLC	Goffstown, NH	14 GWh	Nov 1985	Dec 2023	Water
1639 RT 29 Solar 1	1639 RT 29 Solar 1, LLC	Gloversville, NY	7 GWh	Nov 2020	Dec 2023	Solar
1639 RT 29 Solar 2	1639 RT 29 Solar 2, LLC	Gloversville, NY	5 GWh	Nov 2020	Dec 2023	Solar
Equity Industrial Turbines	Equity Industrial Turbines	Gloucester, MA	7 GWh	Nov 2012	Dec 2022	Wind
Howard Lane Solar	NJR Clean Energy Ventures Corporation	Glocester, RI	842 MWh	Aug 2023	Dec 2023	Solar
GD Glocester White Oak I, LLC	GD Glocester White Oak I, LLC	Glocester, RI	2 GWh	Nov 2020	Dec 2023	Solar
UDR Glastonbury Fuel Cell	UIL Distributed Resources, LLC	Glastonbury, CT	21 GWh	Jan 2016	Dec 2023	Natural Gas
Gilman Mill	Ampersand Gilman Hydro LP	Gilman, VT	28 GWh	Dec 1940	Dec 2023	Water
Kearsarge Gill	Kearsarge Gill LLC	Gill, MA	3 GWh	Dec 2017	Dec 2023	Solar
Saint Albans Solar	Cypress Creek Renewables	Georgia, VT	7 GWh	Sep 2018	Dec 2023	Solar
Gardner Solar 1	Gardner Solar 1, LLC	Gardner, MA	3 GWh	Apr 2014	Dec 2023	Solar
Gardner - Otter River Road	Otter River Road Solar LLC	Gardner, MA	4 GWh	Sep 2019	Dec 2023	Solar
Dept of Corrections NCCI Wind	Dept of Corrections NCCI Wind	Gardner, MA	5 GWh	Oct 2013	Sep 2024	Wind
West Street Solar 1 LLC	AES Distributed Energy	Gardner, MA	8 GWh	Nov 2019	Dec 2023	Solar
Mt Wachusett Community College	Mt Wachusett Community College	Gardner, MA	4 GWh	Feb 2011	Sep 2024	Wind
Clark Road Solar 1, LLC	Clark Road Solar 1, LLC	Gardner, MA	8 GWh	Nov 2020	Dec 2023	Solar
Gardiner	KEI (Maine) Power Management (III) LLC	Gardiner, ME	7 GWh	Jun 1985	Dec 2023	Water
Fryeburg	Nautilus Solar Solutions	Fryeburg, ME	6 GWh	Apr 2023	Dec 2023	Solar
Freetown MA 1, LLC	Navisun LLC	Freetown, MA	1 GWh	Nov 2022	Dec 2023	Solar
Acushnet-Braley Road 1	CleanCapital Holdings	Freetown, MA	3 GWh	Dec 2012	Dec 2023	Solar
Washburn Road Solar	REA Investments, LLC	Freetown, MA	3 GWh	Nov 2018	Dec 2023	Solar
Syncarpha Freetown	Marie's Way Solar I, LLC	Freetown, MA	7 GWh	Oct 2016	Dec 2023	Solar
Bullock Road Solar 1	Bullock Road Solar 1, LLC	Freetown, MA	12 GWh	Jun 2018	Dec 2023	Solar
Freetown Solar	Mass Solar, LLC	Freetown, MA	7 GWh	Feb 2015	Dec 2023	Solar
Braley Road 2	Mass Solar, LLC	Freetown, MA	3 GWh	Feb 2015	Jul 2023	Solar
Beaver Ridge Wind	CPV Beaver Ridge Wind LLC	Freedom, ME	10 GWh	Oct 2008	Dec 2023	Wind
Fredonia Solar LLC	Greenbacker Renewable Energy Corporation	Fredonia, NY	2 GWh	Aug 2021	Dec 2023	Solar
Stevens Mills Dam	Eagle Creek Renewable Energy, LLC	Franklin, NH	10 GWh	May 1982	Dec 2023	Water
Eastman Falls	Central Rivers Power NH, LLC	Franklin, NH	33 GWh	Jul 1937	Dec 2023	Water
126 Grove Solar LLC	Altus Power America Management, LLC	Franklin, MA	2 GWh	May 2012	Dec 2023	Solar
Franklin 2	CD US Solar MT 2 LLC	Franklin, MA	5 GWh	Nov 2013	Dec 2023	Solar
Kearsarge Upper Union	Kearsarge Upper Union LLC	Franklin, MA	1 GWh	Feb 2023	Dec 2023	Solar
Framingham State University Plant	Framingham State University	Framingham, MA	82 MWh	May 1974	Sep 2024	Solar : 73.2% Distillate Fuel Oil : 26.8%
DDR Shoppers World	Altus Power America Management, LLC	Framingham, MA	1 GWh	Oct 2017	Dec 2023	Solar
Exelon Framingham LLC	Constellation Power, Inc	Framingham, MA	792 MWh	Aug 1969	Dec 2023	Distillate Fuel Oil
DG Foxborough Elm CSG	DG Foxborough Elm	Foxborough, MA	4 GWh	Jul 2017	Dec 2023	Solar
Town of Foxborough - Landfill (SREC II) CSG	Town of Foxborough - Landfill (SREC II)	Foxborough, MA	2 GWh	Jul 2017	Dec 2023	Solar
One Patriot	Bloom Energy	Foxborough, MA	13 GWh	Nov 2019	Dec 2023	Natural Gas
CED Foster	Consolidated Edison Development Inc.	Foster, RI	3 GWh	Nov 2017	Sep 2024	Solar
New England Wind LLC	Avangrid Renewables LLC	Florida, MA	59 GWh	Nov 2012	Sep 2024	Wind
Deerfield 5	Great River Hydro, LLC	Florida, MA	63 GWh	Sep 1974	Dec 2023	Water
Fife Brook	Bear Swamp Power Company LLC	Florida, MA	33 GWh	Sep 1974	Dec 2023	Water
Ashby Solar, LLC CSG	Ashby Solar, LLC	Fitchburg, MA	3 GWh	Jun 2018	Dec 2023	Solar
Fitchburg Renewables	Fitchburg Renewables, LLC	Fitchburg, MA	6 GWh	Feb 2020	Dec 2023	Solar
Fishers Island 1	Connecticut Mun Elec Engy Coop	Fisher's Island, NY	119 MWh	Nov 2010	Dec 2023	Distillate Fuel Oil
GMP Solar/Storage-Ferrisburgh Hybrid	Green Mountain Power Corp	Ferrisburgh, VT	9 GWh	Aug 2019	Sep 2024	Solar : 90.7% Electricity used for energy storage : 9.3%
Farmington Solar	Farmington Solar, LLC	Farmington, ME	126 GWh	Sep 2021	Sep 2024	Solar
Farmingdale FA01	Nautilus Solar Solutions	Farmingdale, ME	8 GWh	May 2022	Dec 2023	Solar
Falmouth 2 Solar	Citizens Enterprises Corporation	Falmouth, MA	3 GWh	Aug 2021	Dec 2023	Solar
Blacksmith Road Solar 1	Blacksmith Road Solar 1, LLC	Falmouth, MA	8 GWh	Nov 2021	Dec 2023	Solar
Falmouth Landfill Solar	Citizens Enterprises Corporation	Falmouth, MA	5 GWh	Mar 2017	Dec 2023	Solar
Falls Village	FirstLight Power Resources Services LLC	Falls Village, CT	52 GWh	Dec 1913	Dec 2023	Water
GRS Fall River	Gas Recovery Systems Inc	Fall River, MA	121 MWh	Jun 2000	Dec 2022	Landfill Gas
Fall River Solar CSG	MN8 Energy LLC	Fall River, MA	3 GWh	Jan 2013	Dec 2023	Solar
Fairhaven Wind	Fairhaven Wind LLC	Fairhaven, MA	3 GWh	Mar 2012	Dec 2023	Wind
Fairhaven C CSG	MN8 Energy LLC	Fairhaven, MA	3 GWh	Apr 2017	Dec 2023	Solar
Fairhaven E	Fairhaven MA 1, LLC	Fairhaven, MA	4 GWh	Jul 2021	Dec 2023	Solar
Fairhaven MA 2	Consolidated Edison Development Inc.	Fairhaven, MA	5 GWh	Aug 2021	Dec 2023	Solar
Barefoot Solar	Madison Energy Investments LLC	Fairfiled, ME	4 GWh	Nov 2022	Dec 2023	Solar
Fort Fairfield	Standard Solar	Fairfield, ME	1 GWh	Jul 2023	Dec 2023	Solar
Cenergy - Richards (CSG)	Luminace Sunbeam Development Holdings, LLC	Fairfield, ME	220 MWh	Sep 2023	Dec 2023	Solar
Fairfield PV - BD Solar Fairfield LLC	BD Solar Fairfield LLC	Fairfield, ME	8 GWh	May 2021	Dec 2023	Solar
Fairfield University CHP Plant	Fairfield University	Fairfield, CT	25 GWh	Sep 2007	Dec 2023	Natural Gas
Fairfax Falls	Green Mountain Power Corp	Fairfax, VT	23 GWh	Jan 1919	Dec 2023	Water
GMP Solar/Storage-Essex Hybrid	Green Mountain Power Corp	Essex, VT	7 GWh	Aug 2019	Sep 2024	Solar : 91.0% Electricity used for energy storage : 9.0%
Whitcomb Solar Farm	ERWR Whitcomb Farm Solar LLC	Essex Junction, VT	3 GWh	Sep 2014	Dec 2023	Solar
Essex Junction 19	Green Mountain Power Corp	Essex Junction, VT	47 GWh	Dec 1916	Sep 2024	Water : 99.5% Distillate Fuel Oil : 0.5%
Erving CSG	Erving Poplar Mountain Solar 1, LLC	Erving, MA	1 GWh	Aug 2020	Dec 2023	Solar
Erving Paper Mills	Erving Paper Mills Inc	Erving, MA	42 GWh	Nov 2013	Sep 2024	Natural Gas : 98.1% Distillate Fuel Oil : 1.9%
French King Solar LLC	French King Solar LLC	Erving, MA	7 GWh	Oct 2022	Dec 2023	Solar
Errol Hydroelectric Project	Errol Hydroelectric Co LLC	Errol, NH	16 GWh	Oct 1986	Dec 2023	Water

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