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	102.8 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 \| 57.6% Nuclear \| 25% Water \| 7.7% Other Fuel \| 4.6% 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
Seabrook	NextEra Energy Seabrook LLC	Seabrook, NH	11 TWh	Jul 1990	Aug 2024	Nuclear
Deerfield Wind LLC	Avangrid Renewables LLC	Searsburg, VT	88 GWh	Nov 2017	Aug 2024	Wind
Searsburg	Great River Hydro, LLC	Searsburg, VT	22 GWh	Feb 1922	Dec 2023	Water
Searsburg Wind Turbine	Green Mountain Power Corp	Searsburg, VT	9 GWh	May 1997	Aug 2024	Wind
Robbins Lumber	Robbins Lumber Inc	Searsmont, ME	97 MWh	Dec 1980	Dec 2023	Distillate Fuel Oil
Georges River Energy	Robbins Lumber Inc	Searsmont, ME	40 GWh	Nov 2018	Dec 2023	Wood/Wood Waste Solids
Caterpillar Hill	AES Clean Energy	Sedgwick, ME	235 MWh	Nov 2023	Dec 2023	Solar
Woodland Avenue Solar 1	Woodland Avenue Solar 1, LLC	Seekonk, MA	8 GWh	Jul 2020	Dec 2023	Solar
SunGen Sharon 1 LLC	SunGen Sharon 1 LLC	Sharon, VT	3 GWh	Jul 2012	Dec 2023	Solar
Shawmut	Brookfield White Pine Hydro LLC	Shawmut, ME	37 GWh	Dec 1912	Dec 2023	Water
Berkshire 1	PPS Berkshire Solar LLC	Sheffield, MA	2 GWh	Nov 2011	Dec 2023	Solar
Seaboard Sheffield, LLC	Navisun LLC	Sheffield, MA	3 GWh	Mar 2021	Dec 2023	Solar
Sheffield Wind	Evergreen Wind, LLC	Sheffield, VT	64 GWh	Sep 2011	Aug 2024	Wind
Limerick Road Solar Farm	Limerick Road Solar, LLC	Shelburne, VT	3 GWh	Nov 2013	Dec 2023	Solar
Sheldon Solar	Excelsior Energy Capital	Sheldon Springs, VT	5 GWh	Aug 2013	Jan 2023	Solar
Sheldon Springs Hydroelectric	Central Rivers Power US, LLC	Sheldon Springs, VT	75 GWh	Jun 1988	Dec 2023	Water
Derby Hydro	McCallum Enterprises I LP	Shelton, CT	9 GWh	Dec 1988	Dec 2023	Water
Emerald Gardens PKI, LLC	Emerald Gardens PKI, LLC	Shelton, CT	2 GWh	Sep 2021	Dec 2023	Solar
EBZ Solar	Citizens Enterprises Corporation	Shirley, MA	3 GWh	Dec 2012	Dec 2023	Solar
Devens	Altus Power America Management, LLC	Shirley, MA	4 GWh	May 2014	Dec 2023	Solar
Shirley Landfill	Altus Power America Management, LLC	Shirley, MA	1 GWh	Apr 2017	Dec 2023	Solar
Shirley Water	Altus Power America Management, LLC	Shirley, MA	3 GWh	Jul 2016	Dec 2023	Solar
Shrewsbury Solar	Consolidated Edison Development Inc.	Shrewsbury, MA	4 GWh	Sep 2012	Dec 2023	Solar
Centech Gas Generator	Town of Shrewsbury - (MA)	Shrewsbury, MA	340 MWh	Mar 2019	Dec 2023	Natural Gas
SELCO Community Solar	Massachusetts Mun Wholes Electric Co	Shrewsbury, MA	5 GWh	May 2018	Dec 2023	Solar
Sidney	Nautilus Solar Solutions	Sidney, ME	1 GWh	Apr 2023	Dec 2023	Solar
DWW Solar ll	DWW Solar ll LLC	Simsbury, CT	46 GWh	Nov 2019	Aug 2024	Solar
Somerset Plant	Sappi Fine Paper North America-Somerset	Skowhegan, ME	485 GWh	Dec 1975	Aug 2024	Black Liquor : 46.4% Wood/Wood Waste Solids : 37.3% Tire-derived Fuels : 6.7% Natural Gas : 6.2% Residual Fuel Oil : 2.3% Sludge Waste : 1.0%
Weston Hydro	Brookfield White Pine Hydro LLC	Skowhegan, ME	88 GWh	Dec 1919	Dec 2023	Water
ME Novel Lighthouse - Front St. Solar CSG	Luminace Sunbeam Development Holdings, LLC	Skowhegan, ME	1 GWh	Apr 2023	Dec 2023	Solar
Smithfield Solar Farm, LLC	Smithfield Solar Farm	Smithfield, RI	4 GWh	Jun 2020	Dec 2023	Solar
Elizabeth Mines Solar 1	Elizabeth Mines Solar 1, LLC	So. Strafford, VT	7 GWh	Oct 2017	Dec 2023	Solar
Williams Hydro	Brookfield White Pine Hydro LLC	Solon, ME	97 GWh	Dec 1938	Dec 2023	Water
Somers Solar Center, LLC	Onward Energy	Somers, CT	8 GWh	Nov 2013	Dec 2023	Solar
Barrow Solar	Ecos Energy LLC	Somers, CT	3 GWh	May 2021	Dec 2023	Solar
Few Solar	Ecos Energy LLC	Somers, CT	2 GWh	Dec 2020	Dec 2023	Solar
Blair Solar	Ecos Energy LLC	Somers, CT	2 GWh	Dec 2020	Dec 2023	Solar
Madison Solar	Ecos Energy LLC	Somers, CT	2 GWh	Dec 2020	Dec 2023	Solar
Somersworth Lower Great Dam	Green Mountain Power Corp	Somersworth, NH	5 GWh	Jun 1985	Dec 2023	Water
CoreSite - Somerville	Bloom Energy	Somerville, MA	30 GWh	Aug 2020	Dec 2023	Natural Gas
Salmon Falls	Green Mountain Power Corp	South Berwick, ME	5 GWh	Jun 1986	Dec 2023	Water
158th Fighter Wing Solar Farm	158th Fighter Wing	South Burlington, VT	1 GWh	Aug 2011	Dec 2023	Solar
Chittenden County Solar Partners	Chittenden County Solar Partners LLC	South Burlington, VT	3 GWh	Apr 2011	Dec 2023	Solar
Gorge 18	Green Mountain Power Corp	South Burlington, VT	20 GWh	Dec 1927	Dec 2023	Water
Claire Solar Farm	Claire Solar Partners LLC	South Burlington, VT	3 GWh	Jun 2014	Dec 2023	Solar
Federal Road Solar 1, LLC CSG	Federal Road Solar 1, LLC	South Carver, MA	16 GWh	Nov 2015	Dec 2023	Solar
Northbridge Solar	Consolidated Edison Development Inc.	South Grafton, MA	3 GWh	Jul 2013	Dec 2023	Solar
Kearsarge SKSC1 LLC	Kearsarge SKSC1 LLC	South Kingstown, RI	6 GWh	Sep 2018	Dec 2023	Solar
Kearsarge SKSC2 LLC	Kearsarge SKSC2 LLC	South Kingstown, RI	6 GWh	Sep 2018	Dec 2023	Solar
Bird Machine Solar Farm	Bird Machine Solar Farm, LLC	South Walpole, MA	6 GWh	Jul 2017	Dec 2023	Solar
South Windsor Fuel Cell	South Energy Investments LLC	South Windsor, CT	39 GWh	Feb 2020	Dec 2023	Natural Gas
ALDI DC 2	EnterSolar	South Windsor, CT	2 GWh	Jan 2018	Dec 2023	Solar
Ticket Network South Windsor	EnterSolar	South Windsor, CT	2 GWh	Apr 2018	Dec 2023	Solar
Southampton Solar PV	NSTAR Electric Company	Southampton, MA	3 GWh	Jan 2019	Dec 2023	Solar
Dudley River Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2023	Solar
Southbridge Landfill Gas-to-Energy	Southbridge Recycling and Disposal Park	Southbridge, MA	12 GWh	Sep 2011	Dec 2023	Landfill Gas
West A&B Solar Project Hybrid CSG	AES Distributed Energy	Southbridge, MA	5 GWh	Nov 2020	Dec 2023	Solar
Southbridge Solar	AES Distributed Energy	Southbridge, MA	2 GWh	Feb 2016	Aug 2024	Solar
Annese Solar Project Hybrid CSG	AES Distributed Energy	Southbridge, MA	7 GWh	Nov 2020	Dec 2023	Solar
Alicea Solar Project Hybrid CSG	AES Distributed Energy	Southbridge, MA	4 GWh	Nov 2020	Dec 2023	Solar
Southbridge PV	Terraform Arcadia	Southbridge, MA	4 GWh	Dec 2013	Dec 2023	Solar
Cohasse Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Sep 2017	Dec 2023	Solar
Dudley River 2 Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2023	Solar
Dudley River 3 Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2023	Solar
Dresser Hill CSG	Dresser Hill Solar, LLC	Southbridge, MA	6 GWh	Dec 2020	Dec 2023	Solar
ZPD-PT Solar Project 2017-023 LLC Hybrid CSG	AES Distributed Energy	Southbridge, MA	4 GWh	Dec 2020	Dec 2023	Solar
Shepaug	FirstLight Power Resources Services LLC	Southbury, CT	163 GWh	Dec 1954	Dec 2023	Water
IBM Southbury	Bloom Energy	Southbury, CT	5 GWh	Oct 2014	Dec 2022	Natural Gas
Southington Solar One	DG Connecticut III, LLC	Southington, CT	9 GWh	Jan 2022	Dec 2023	Solar
Southwick Solar PV	NSTAR Electric Company	Southwick, MA	8 GWh	Dec 2018	Aug 2024	Solar
Goose Pond Solar	LSE Dorado, LLC	Southwick, MA	7 GWh	Dec 2019	Dec 2023	Solar
Kearsarge Southwick LLC	Kearsarge Solar LLC	Southwick, MA	6 GWh	Feb 2015	Dec 2023	Solar
Sunpin Blandford	Blandford Sun, LLC	Southwick, MA	6 GWh	May 2020	Nov 2023	Solar
Blair Wire Village Solar, LLC CSG	38 Degrees North, LLC	Spencer, MA	2 GWh	Nov 2017	Dec 2023	Solar
Cycz Solar Project CSG Hybrid	AES Distributed Energy	Spencer, MA	3 GWh	May 2020	Dec 2023	Solar
Wilson Solar	Consolidated Edison Solutions Inc.	Spencer, MA	3 GWh	May 2013	Dec 2023	Solar
SJA Solar LLC-Solterra Monastery CSG	SJA Solar, LLC	Spencer, MA	72 GWh	Nov 2016	Dec 2023	Solar
Woodchuck Solar, LLC CSG	38 Degrees North, LLC	Spencer, MA	2 GWh	Nov 2017	Dec 2023	Solar
Spencer Solar MA	Citizens Enterprises Corporation	Spencer, MA	3 GWh	Feb 2020	Dec 2023	Solar
ZPD-PT Solar Project 2017-044 LLC CSG	AES Distributed Energy	Spencer, MA	846 MWh	Sep 2021	Dec 2023	Solar
East Springfield Solar PV	NSTAR Electric Company	Springfield, MA	2 GWh	Sep 2018	Dec 2023	Solar
Oak Street Solar	Citizens Enterprises Corporation	Springfield, MA	5 GWh	Nov 2019	Dec 2023	Solar
Indian Orchard PV Facility	Western Massachusetts Electric Company	Springfield, MA	3 GWh	Nov 2011	Dec 2023	Solar
Chicopee River Solar	Citizens Enterprises Corporation	Springfield, MA	3 GWh	Dec 2014	Dec 2023	Solar
Cottage Street Solar Facility	Western Massachusetts Electric Company	Springfield, MA	3 GWh	Apr 2014	Aug 2024	Solar
Springfield Solar PV	NSTAR Electric Company	Springfield, MA	6 GWh	Dec 2018	Dec 2023	Solar
Smith & Wesson at Springfield MA PV	Luminace Solar Massachusetts, LLC	Springfield, MA	2 GWh	Jun 2017	Dec 2023	Solar
NE Renewable Springfield, LLC	NE Renewable Springfield, LLC	Springfield, NH	32 GWh	Nov 1987	Dec 2023	Wood/Wood Waste Solids
St. Albans SPEED Project	St. Albans Solar Partners, LLC	St. Albans, VT	2 GWh	Nov 2013	Dec 2023	Solar
Golden Solar	Cardinal Renewables	St. Johnsbury, VT	3 GWh	Oct 2021	Dec 2023	Solar
Stafford MS Ground Mount Community Solar	Town of Stafford - (CT)	Stafford, CT	3 GWh	Jun 2016	Dec 2023	Solar
Waterside Power, LLC	Waterside Power, LLC	Stamford, CT	2 GWh	May 2003	Dec 2023	Distillate Fuel Oil
Stamford Health	Stamford Health Systems, Inc.	Stamford, CT	84 MWh	Dec 1983	Dec 2022	Distillate Fuel Oil
Standish	Nautilus Solar Solutions	Standish, ME	535 MWh	Sep 2023	Dec 2023	Solar
CES Sterling LLC	SunEdison LLC	Sterling, MA	3 GWh	Jan 2013	Dec 2023	Solar
MA Solar Storage 1 Hybrid	Origis Energy USA, Inc	Sterling, MA	1 GWh	Feb 2018	Dec 2023	Solar
Stillwater Hydro Station	Brookfield Black Bear Hydro, LLC	Stillwater, ME	12 GWh	Dec 1912	Dec 2023	Water
UCONN Cogen Facility	University of Connecticut	Storrs, CT	124 GWh	Feb 2006	Aug 2024	Natural Gas : 99.7%
Shuman Solar	NuGen Capital Management	Stoughton, MA	2 GWh	Mar 2016	Dec 2023	Solar
Stow PV	AES Distributed Energy	Stow, MA	2 GWh	Nov 2013	Dec 2023	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	894.0 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	63.3 TWh	554
#51	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	33.2 TWh	20
#12	New York Independent System Operator	130.0 TWh	1,100
#1	PJM Interconnection, LLC	843.8 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	191.5 TWh	1,943
#9	Tennessee Valley Authority	157.5 TWh	170
#10	Florida Power & Light Co.	147.7 TWh	159
#12	New York Independent System Operator	130.0 TWh	1,100
#13	Duke Energy Carolinas	110.9 TWh	556
#15	ISO New England	102.8 TWh	1,487
#16	Bonneville Power Administration	80.0 TWh	158
#17	Duke Energy Progress East	63.3 TWh	554
#18	Salt River Project Agricultural Improvement and Power District	59.0 TWh	45
#19	PacifiCorp East	52.6 TWh	204