ISO New England

Balancing Authority Summary Information

ISO New England is ranked #15 out of 64 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	Jul 2026
Annual Generation	111.1 TWh
Power Plants	1,629
Utilities	833
Ranked #15 out of 64 in terms of net annual generation
Ranked #10 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 54.9% Nuclear \| 25% Wind \| 5.1% Water \| 4.5% Other Fuel \| 4.4% Solar \| 1.6% Coal \| 0.1%

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Daily Net Generation for ISO New England for the past 3 Years

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Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Gorham	Central Rivers Power NH, LLC	Gorham, NH	8 GWh	Jul 1917	Dec 2025	Water
Amoskeag	Central Rivers Power NH, LLC	Manchester, NH	65 GWh	Jul 1922	Dec 2025	Water
Canaan	Central Rivers Power NH, LLC	Canaan, VT	6 GWh	Jul 1927	Dec 2025	Water
Hooksett	Central Rivers Power NH, LLC	Hooksett, NH	6 GWh	Jul 1927	Dec 2025	Water
Sheldon Springs Hydroelectric	Central Rivers Power US, LLC	Sheldon Springs, VT	52 GWh	Jun 1988	Dec 2025	Water
Lawrence Hydroelectric Associates	Central Rivers Power US, LLC	Lawrence, MA	59 GWh	Jun 1981	Dec 2025	Water
CES Agawam Tuckahoe Solar Hybrid	CES Agawam Tuckahoe Solar LLC	Agawam, MA	7 GWh	Nov 2021	Dec 2025	Solar
Charlton Solar I CSG	Charlton Solar I, LLC	Charlton, MA	5 GWh	Nov 2014	Dec 2025	Solar
Chittenden County Solar Partners	Chittenden County Solar Partners LLC	South Burlington, VT	3 GWh	Apr 2011	Dec 2024	Solar
Agawam Solar	Citizens Enterprises Corporation	Agawam, MA	2 GWh	Feb 2012	Dec 2025	Solar
Chicopee Solar	Citizens Enterprises Corporation	Chicopee, MA	4 GWh	Nov 2013	Dec 2025	Solar
Route 57 Solar	Citizens Enterprises Corporation	Agawam, MA	2 GWh	Feb 2013	Dec 2025	Solar
Rehoboth Solar	Citizens Enterprises Corporation	Rehoboth, MA	3 GWh	Nov 2013	Dec 2025	Solar
EBZ Solar	Citizens Enterprises Corporation	Shirley, MA	3 GWh	Dec 2012	Dec 2025	Solar
Whately Solar	Citizens Enterprises Corporation	Whately, MA	2 GWh	Feb 2013	Dec 2025	Solar
Falmouth Landfill Solar	Citizens Enterprises Corporation	Falmouth, MA	5 GWh	Mar 2017	Dec 2025	Solar
Hunt Road Solar	Citizens Enterprises Corporation	Amesbury, MA	7 GWh	Nov 2016	Dec 2025	Solar
Chicopee Granby Road Solar	Citizens Enterprises Corporation	Chicopee, MA	2 GWh	Dec 2014	Dec 2025	Solar
Chicopee River Solar	Citizens Enterprises Corporation	Springfield, MA	3 GWh	Dec 2014	Dec 2025	Solar
Twiss Street Solar	Citizens Enterprises Corporation	Westfield, MA	2 GWh	Dec 2014	Mar 2025	Solar
Citizens Agawam Landfill Solar	Citizens Enterprises Corporation	Agawam, MA	3 GWh	Mar 2017	Dec 2025	Solar
Norton Landfill Solar	Citizens Enterprises Corporation	Norton, MA	2 GWh	Dec 2016	Dec 2025	Solar
Tyngsborough Solar	Citizens Enterprises Corporation	Tyngsborough, MA	3 GWh	Dec 2016	Dec 2025	Solar
Spencer Solar MA	Citizens Enterprises Corporation	Spencer, MA	4 GWh	Feb 2020	Dec 2025	Solar
Oak Street Solar	Citizens Enterprises Corporation	Springfield, MA	5 GWh	Nov 2019	Dec 2025	Solar
Ashland Solar	Citizens Enterprises Corporation	Ashland, MA	6 GWh	Nov 2019	Dec 2025	Solar
Falmouth 2 Solar	Citizens Enterprises Corporation	Falmouth, MA	3 GWh	Aug 2021	Dec 2025	Solar
Oxford Solar	Citizens Enterprises Corporation	Oxford, MA	5 GWh	Jan 2020	Dec 2025	Solar
Chace Mill Winooski One	City of Burlington Electric - (VT)	Winooski, VT	17 GWh	Mar 1993	Dec 2025	Water
J C McNeil	City of Burlington Electric - (VT)	Burlington, VT	224 GWh	May 1984	Apr 2026	Wood/Wood Waste Solids : 99.8%
Burlington GT	City of Burlington Electric - (VT)	Burlington, VT	684 MWh	Aug 1971	Dec 2025	Distillate Fuel Oil
Front Street	City of Chicopee - (MA)	Chicopee, MA	1 GWh	Dec 1977	Dec 2025	Distillate Fuel Oil
Cobble Mountain	City of Holyoke Gas and Elec Dept - (MA)	Granville, MA	7 GWh	Dec 1929	Dec 2025	Water
Riverside Holyoke	City of Holyoke Gas and Elec Dept - (MA)	Holyoke, MA	22 GWh	Dec 1905	Dec 2025	Water
Hadley Falls	City of Holyoke Gas and Elec Dept - (MA)	Holyoke, MA	137 GWh	Dec 1951	Dec 2025	Water
Chemical	City of Holyoke Gas and Elec Dept - (MA)	Holyoke, MA	5 GWh	Dec 1934	Dec 2025	Water
Boatlock	City of Holyoke Gas and Elec Dept - (MA)	Holyoke, MA	12 GWh	Dec 1920	Dec 2025	Water
Cabot Holyoke	City of Holyoke Gas and Elec Dept - (MA)	Holyoke, MA	3 GWh	Dec 1892	Dec 2025	Water
Mine Falls Generating Station	City of Nashua - (NH)	Nashua, NH	9 GWh	Nov 1985	Dec 2025	Water
Tenth Street	City of Norwich - (CT)	Norwich, CT	2 GWh	Apr 1967	Dec 2025	Water
Waters River	City of Peabody - (MA)	Peabody, MA	6 GWh	Nov 1971	Dec 2025	Natural Gas : 71.3% Distillate Fuel Oil : 28.7%
Cleary Flood Hybrid	City of Taunton - (MA)	Taunton, MA	54 GWh	May 1966	Dec 2025	Natural Gas : 94.0% Distillate Fuel Oil : 6.0%
West Water Street	City of Taunton - (MA)	Taunton, MA	2 GWh	Dec 2017	Dec 2025	Distillate Fuel Oil
Thundermist Hydro	City of Woonsocket - (RI)	Providence, RI	3 GWh	May 1981	Jul 2025	Water
Worcester Landfill	City of Worcester DPW - (MA)	Worcester, MA	8 GWh	Apr 2017	Dec 2025	Solar
Claire Solar Farm	Claire Solar Partners LLC	South Burlington, VT	4 GWh	Jun 2014	Dec 2024	Solar
Clarendon Solar Farm	Clarendon Solar Farm, LLC	North Clarendon, VT	3 GWh	Jun 2014	Dec 2025	Solar
Clark Road Solar 1, LLC	Clark Road Solar 1, LLC	Gardner, MA	8 GWh	Nov 2020	Dec 2025	Solar
Clark University	Clark University	Worcester, MA	4 GWh	Dec 2012	Dec 2025	Natural Gas
Barnstable Landfill	Clean Focus Yield, LLC	Marstons Mills, MA	5 GWh	Aug 2014	Dec 2025	Solar
Dennis Landfill	Clean Focus Yield, LLC	Dennis, MA	8 GWh	Aug 2014	Dec 2025	Solar
Nunnepog	Clean Focus Yield, LLC	Edgartown, MA	2 GWh	May 2014	Dec 2025	Solar
Katama Farm	Clean Focus Yield, LLC	Edgartown, MA	2 GWh	May 2014	Dec 2025	Solar
Tisbury Landfill Solar	Clean Focus Yield, LLC	Tisbury, MA	2 GWh	Jun 2014	Dec 2025	Solar
Harwich Landfill	Clean Focus Yield, LLC	Harwich, MA	6 GWh	Jul 2014	Dec 2025	Solar
Chatham Landfill	Clean Focus Yield, LLC	Chatham, MA	2 GWh	Aug 2014	Dec 2025	Solar
Brewster Landfill	Clean Focus Yield, LLC	Brewster, MA	2 GWh	Aug 2014	Dec 2025	Solar
Acushnet AD Makepeace	CleanCapital Holdings	Wareham, MA	6 GWh	Jun 2012	Dec 2025	Solar
Lepomis PV Energy LLC	CleanCapital Holdings	Plymouth, MA	8 GWh	May 2014	Dec 2025	Solar
GSPP Boxborough Littleton (MA)	CleanCapital Holdings	Boxborough, MA	6 GWh	Dec 2018	Dec 2025	Solar
Acushnet-Braley Road 1	CleanCapital Holdings	Freetown, MA	3 GWh	Dec 2012	Dec 2025	Solar
Acushnet- High Hill	CleanCapital Holdings	Dartmouth, MA	3 GWh	Feb 2013	Dec 2025	Solar
Easton Landfill	CleanCapital Holdings	Easton, MA	3 GWh	Sep 2013	Dec 2025	Solar
Ludlow Landfill	CleanCapital Holdings	Ludlow, MA	3 GWh	Jul 2013	Dec 2025	Solar
Methuen Landfill	CleanCapital Holdings	Methuen, MA	2 GWh	Jun 2013	Dec 2025	Solar
GD West Greenwich Victory I, LLC	CleanCapital Holdings	West Greenwich, RI	3 GWh	Nov 2019	Dec 2025	Solar
Acushnet Hawes Reed Road	CleanCapital Holdings	Dartmouth, MA	2 GWh	Jun 2012	Dec 2025	Solar
Easthampton Landfill-City of Easthampton	CleanCapital Holdings	Easthampton, MA	3 GWh	May 2012	Dec 2025	Solar
Dartmouth Landfill	CleanCapital Holdings	Dartmouth, MA	2 GWh	Jan 2013	Dec 2025	Solar
EDF Lancaster	CleanCapital Holdings	Lancaster, MA	5 GWh	Jun 2014	Dec 2025	Solar
WED Kingstown Solar I, LLC - West	CleanCapital Holdings	Richmond, RI	2 GWh	Nov 2017	Dec 2025	Solar
WED Stilson Solar	CleanCapital Holdings	Richmond, RI	3 GWh	Nov 2017	Dec 2025	Solar
WED Kingstown Solar I - East Array	CleanCapital Holdings	Washington, RI	5 GWh	Nov 2017	Dec 2025	Solar
WED GW Solar, LLC	CleanCapital Holdings	Lincoln, RI	4 GWh	Dec 2018	Dec 2025	Solar
GD Richmond Buttonwoods I, LLC	CleanCapital Holdings	Richmond, RI	2 GWh	Nov 2019	Dec 2025	Solar
Plymouth Site 1	CleanCapital Holdings	Plympton, MA	7 GWh	Sep 2013	Dec 2025	Solar
Gorham Solar 1 (CSG)	CleanCapital Holdings	Gorham, ME	7 GWh	Oct 2023	Dec 2025	Solar
Greater New Bedford LFG Utiliz. Facility	CommonWealth New Bedford Energy LLC	New Bedford, MA	13 GWh	Sep 2005	Dec 2025	Landfill Gas
Johnston Solar	Concord New Energy	Town of Johnston, RI	2 GWh	Jun 2015	Dec 2025	Solar
Franklin Drive	Connecticut Jet Power LLC	Torrington, CT	294 MWh	Oct 1968	Dec 2025	Kerosene
Torrington	Connecticut Jet Power LLC	Torrington, CT	277 MWh	Oct 1967	Dec 2025	Kerosene
Branford	Connecticut Jet Power LLC	Branford, CT	288 MWh	Oct 1967	Dec 2025	Kerosene
Cos Cob	Connecticut Jet Power LLC	Greenwich, CT	2 GWh	Aug 1969	Dec 2025	Kerosene
Jewett City 1	Connecticut Mun Elec Engy Coop	Jewett City, CT	139 MWh	Jan 2010	Dec 2025	Distillate Fuel Oil
LNG 1 & 2	Connecticut Mun Elec Engy Coop	Norwich, CT	382 MWh	Mar 2010	Dec 2025	Distillate Fuel Oil
Gary Court 1 & 2	Connecticut Mun Elec Engy Coop	Groton, CT	381 MWh	Jun 2010	Dec 2025	Distillate Fuel Oil
Lebanon Pines 1 & 2	Connecticut Mun Elec Engy Coop	Lebanon, CT	374 MWh	Mar 2010	Dec 2025	Distillate Fuel Oil
Water Treatment 1 & 2	Connecticut Mun Elec Engy Coop	Groton, CT	494 MWh	Sep 2010	May 2026	Distillate Fuel Oil
Fishers Island 1	Connecticut Mun Elec Engy Coop	Fisher's Island, NY	129 MWh	Nov 2010	Dec 2025	Distillate Fuel Oil
Fort Hill 1, 2, 3 & 4	Connecticut Mun Elec Engy Coop	Uncasville, CT	734 MWh	Jul 2010	May 2026	Distillate Fuel Oil
Bridge Street 1 & 2	Connecticut Mun Elec Engy Coop	Groton, CT	452 MWh	Jun 2010	Dec 2025	Distillate Fuel Oil
Backus Microgrid Project	Connecticut Mun Elec Engy Coop	Norwich, CT	843 MWh	Jul 2014	May 2026	Distillate Fuel Oil
Subase Microgrid Project	Connecticut Mun Elec Engy Coop	Groton, CT	30 GWh	Nov 2022	Dec 2025	Natural Gas
Exelon West Medway II LLC	Constellation Power, Inc	Medway, MA	259 GWh	Feb 2019	May 2026	Natural Gas : 95.3% Kerosene : 4.7%
Exelon Medway LLC	Constellation Power, Inc	Medway, MA	4 GWh	Jun 1970	Dec 2025	Distillate Fuel Oil
Exelon Framingham LLC	Constellation Power, Inc	Framingham, MA	1 GWh	Aug 1969	Dec 2025	Distillate Fuel Oil
Coolidge Solar 1, LLC	Coolidge Solar I, LLC	Ludlow, VT	25 GWh	Nov 2018	May 2026	Solar
Covanta Bristol Energy	Covanta Bristol Inc	Bristol, CT	109 GWh	Nov 1987	May 2026	Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0%
Covanta Southeastern Connecticut Company	Covanta Southeastern Connecticut Company	Preston, CT	108 GWh	Nov 1991	May 2026	Non-biogenic Municipal Solid Waste : 53.9% Biogenic Municipal Solid Waste : 44.1% Distillate Fuel Oil : 2.1%
Coventry Photovoltaic, LLC	Coventry Photovoltaic, LLC	Coventry, VT	3 GWh	Jul 2014	Dec 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	442.5 GWh	4
#24	Dominion Energy South Carolina, Inc.	25.3 TWh	83
#13	Duke Energy Carolinas	112.6 TWh	577
#17	Duke Energy Progress East	64.5 TWh	565
#50	Duke Energy Progress West	4.5 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	33.9 TWh	25
#12	New York Independent System Operator	134.3 TWh	1,299
#1	PJM Interconnection, LLC	882.8 TWh	2,652
#31	South Carolina Public Service Authority	18.5 TWh	35
#59	Southeastern Power Administration	1.3 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	169.4 TWh	2,135
#9	Tennessee Valley Authority	163.4 TWh	207
#10	Florida Power & Light Co.	152.2 TWh	187
#12	New York Independent System Operator	134.3 TWh	1,299
#13	Duke Energy Carolinas	112.6 TWh	577
#15	ISO New England	111.1 TWh	1,629
#16	Bonneville Power Administration	91.6 TWh	167
#17	Duke Energy Progress East	64.5 TWh	565
#18	PacifiCorp East	60.9 TWh	222
#19	Salt River Project Agricultural Improvement and Power District	60.3 TWh	49