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	Oct 2026
Annual Generation	112.2 TWh
Power Plants	1,667
Utilities	846
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% Nuclear \| 25.3% Wind \| 5.7% Water \| 4.6% Other Fuel \| 4.5% Solar \| 1.6% Coal \| 0%

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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
Acushnet-Braley Road 1	CleanCapital Holdings	Freetown, MA	3 GWh	Dec 2012	Dec 2025	Solar
New England Wind LLC	Avangrid Power LLC	Florida, MA	76 GWh	Nov 2012	Jul 2026	Wind
Douglas Solar	RWE Clean Energy	Douglas, MA	3 GWh	Nov 2012	Dec 2025	Solar
Groveland Solar	RWE Clean Energy	Groveland, MA	4 GWh	Nov 2012	Dec 2025	Solar
Boston Scientific Solar	RWE Clean Energy	Quincy, MA	1 GWh	Nov 2012	Dec 2025	Solar
Padelford Solar	RWE Clean Energy	Berkley, MA	4 GWh	Nov 2012	Dec 2025	Solar
Groton Wind LLC	Avangrid Power LLC	Groton, NH	104 GWh	Nov 2012	Jul 2026	Wind
SVEP Solar Project Company	CVI CleanCapital Solar 1 LLC	Pownal, VT	2 GWh	Nov 2012	Dec 2025	Solar
Williamstown Solar	CVI CleanCapital Solar 1 LLC	Williamstown, VT	2 GWh	Nov 2012	Dec 2025	Solar
Georgia Mountain Community Wind Farm	Greenbacker Renewable Energy Corporation	Milton, VT	25 GWh	Nov 2012	Jul 2026	Wind
Manheim New England	Cox Enterprises	North Dighton, MA	2 GWh	Nov 2012	Dec 2025	Solar
Kingdom Community Wind	Green Mountain Power Corp	Lowell, VT	168 GWh	Oct 2012	Jul 2026	Wind
Bull Hill Wind Project	Evergreen Wind, LLC	Eastbrook, ME	66 GWh	Sep 2012	Dec 2025	Wind
Shrewsbury Solar	RWE Clean Energy	Shrewsbury, MA	4 GWh	Sep 2012	Dec 2025	Solar
Camelot Wind LLC	Camelot Wind LLC	Plymouth, MA	3 GWh	Sep 2012	Dec 2025	Wind
NBC Field's Point Wind Farm	Narragansett Bay Commission	Providence, RI	7 GWh	Sep 2012	Jul 2026	Wind
SunGen Sharon 1 LLC	SunGen Sharon 1 LLC	Sharon, VT	2 GWh	Jul 2012	Dec 2025	Solar
True North	CD US Solar MT1 LLC	Salisbury, MA	6 GWh	Jul 2012	Dec 2025	Solar
Canton	Captona Canton LLC	Canton, MA	6 GWh	Jul 2012	Dec 2025	Solar
Acushnet AD Makepeace	CleanCapital Holdings	Wareham, MA	6 GWh	Jun 2012	Dec 2025	Solar
Acushnet Hawes Reed Road	CleanCapital Holdings	Dartmouth, MA	2 GWh	Jun 2012	Dec 2025	Solar
IKEA New Haven Rooftop PV & Fuel Cell	IKEA Property Inc	New Haven, CT	3 GWh	Jun 2012	Dec 2025	Natural Gas : 71.5% Solar : 28.5%
OSG Solar 1 LLC	Navisun LLC	Orange, MA	3 GWh	Jun 2012	Dec 2025	Solar
Dartmouth II Solar	RWE Clean Energy	Dartmouth, MA	3 GWh	May 2012	Dec 2025	Solar
Town of Uxbridge MA at Commerce Dr	Luminace Solar Net Metering, LLC	Uxbridge, MA	2 GWh	May 2012	Dec 2025	Solar
Town of Norfolk MA at Medway Branch	Luminace Solar Massachusetts, LLC	Norfolk, MA	2 GWh	May 2012	Dec 2025	Solar
Easthampton Landfill-City of Easthampton	CleanCapital Holdings	Easthampton, MA	3 GWh	May 2012	Dec 2025	Solar
Axio Green LLC	Altus Power America Management, LLC	Greenfield Township, MA	2 GWh	May 2012	Dec 2025	Solar
126 Grove Solar LLC	Altus Power America Management, LLC	Franklin, MA	2 GWh	May 2012	Dec 2025	Solar
CCSU Fuel Cell Project	New Britain Renewable Energy, LLC	New Britain, CT	7 GWh	Mar 2012	Dec 2025	Natural Gas
Westford Solar Park	MN8 Energy LLC	Westford, MA	4 GWh	Mar 2012	Dec 2025	Solar
Fairhaven Wind	Fairhaven Wind LLC	Fairhaven, MA	3 GWh	Mar 2012	Dec 2025	Wind
433 Purchase Solar NG, LLC	NuGen Capital Management	Swansea, MA	4 GWh	Mar 2012	Dec 2025	Solar
NFM Solar Power LLC	FirstLight Power Resources, Inc. - MA	Northfield, MA	2 GWh	Feb 2012	Dec 2025	Solar
Agawam Solar	Citizens Enterprises Corporation	Agawam, MA	2 GWh	Feb 2012	Dec 2025	Solar
WED NK Green	WED NK Green LLC	North Kingstown, RI	3 GWh	Feb 2012	Dec 2025	Wind
Scituate Wind	Scituate Wind LLC	Scituate, MA	3 GWh	Feb 2012	Dec 2025	Wind
Granite Reliable Power	NexteraEnergy	Dummer, NH	199 GWh	Jan 2012	Jul 2026	Wind
Dorchester Solar Site	Massachusetts Electric Co	Dorchester, MA	2 GWh	Dec 2011	Dec 2025	Solar
Record Hill Wind	Record Hill Wind LLC	Roxbury, ME	110 GWh	Dec 2011	Dec 2025	Wind
Indian Orchard PV Facility	Western Massachusetts Electric Company	Springfield, MA	2 GWh	Nov 2011	Dec 2025	Solar
Holyoke Solar Cooperative at Mueller	Holyoke Solar LLC	Holyoke, MA	4 GWh	Nov 2011	Dec 2025	Solar
Spruce Mountain WInd	CPV Spruce Mountain Wind LLC	Bryant Pond, ME	53 GWh	Nov 2011	Dec 2025	Wind
Berkshire 1	PPS Berkshire Solar LLC	Sheffield, MA	2 GWh	Nov 2011	Dec 2025	Solar
Danbury Hospital Cogen Plant	Danbury Hospital	Danbury, CT	22 GWh	Oct 2011	Dec 2025	Natural Gas
Sheffield Wind	Evergreen Wind, LLC	Sheffield, VT	57 GWh	Sep 2011	Jul 2026	Wind
Charlestown Wind Turbine	MWRA Charlestown	Charlestown, MA	1 GWh	Sep 2011	Dec 2025	Wind
Southbridge Landfill Gas-to-Energy	Southbridge Recycling and Disposal Park	Southbridge, MA	10 GWh	Sep 2011	Dec 2025	Landfill Gas
158th Fighter Wing Solar Farm	158th Fighter Wing	South Burlington, VT	1 GWh	Aug 2011	Dec 2025	Solar
Kleen Energy Systems	Kleen Energy Systems, LLC	Middletown, CT	4 TWh	Jun 2011	Jul 2026	Natural Gas : 98.0% Distillate Fuel Oil : 2.0%
Rollins Wind Project	Evergreen Wind, LLC	Winn Village, ME	147 GWh	Jun 2011	Dec 2025	Wind
GenConn Middletown LLC	GenConn Middletown LLC	Middletown, CT	6 GWh	May 2011	Dec 2025	Kerosene : 77.4% Natural Gas : 22.6%
Chittenden County Solar Partners	Chittenden County Solar Partners LLC	South Burlington, VT	3 GWh	Apr 2011	Dec 2025	Solar
Berkshire Wind Power Project	Massachusetts Mun Wholes Electric Co	Lanesboro, MA	28 GWh	Apr 2011	Jul 2026	Wind
Ipswich Wind Turbine	Town of Ipswich - (MA)	Ipswich, MA	2 GWh	Apr 2011	Dec 2025	Wind
Dartmouth Solar	RWE Clean Energy	Dartmouth, MA	2 GWh	Feb 2011	Dec 2025	Solar
Mt Wachusett Community College	Mt Wachusett Community College	Gardner, MA	5 GWh	Feb 2011	Jul 2026	Wind
Haverhill Solar Power Project	Massachusetts Electric Co	Haverhill, MA	1 GWh	Nov 2010	Dec 2025	Solar
Fishers Island 1	Connecticut Mun Elec Engy Coop	Fisher's Island, NY	129 MWh	Nov 2010	Dec 2025	Distillate Fuel Oil
Silver Lake Solar Photovoltaic Facility	Western Massachusetts Electric Company	Pittsfield, MA	2 GWh	Nov 2010	Dec 2025	Solar
Water Treatment 1 & 2	Connecticut Mun Elec Engy Coop	Groton, CT	394 MWh	Sep 2010	Jul 2026	Distillate Fuel Oil
Fort Hill 1, 2, 3 & 4	Connecticut Mun Elec Engy Coop	Uncasville, CT	653 MWh	Jul 2010	Jul 2026	Distillate Fuel Oil
Notus Wind 1	Notus Clean Energy LLC	E. Falmouth, MA	5 GWh	Jun 2010	Dec 2025	Wind
Bridge Street 1 & 2	Connecticut Mun Elec Engy Coop	Groton, CT	452 MWh	Jun 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
GenConn Devon LLC	GenConn Devon LLC	Milford, CT	15 GWh	May 2010	Dec 2025	Kerosene : 75.4% Natural Gas : 24.6%
NEDC Solar Site	Massachusetts Electric Co	Whitinsville, MA	953 MWh	May 2010	Dec 2025	Solar
Foxwoods CoGen	Foxwoods Resort Casino	Mashantucket, CT	11 GWh	May 2010	Dec 2025	Natural Gas
Sikorsky Aircraft CHP	Sikorsky Aircraft Corporation	Stratford, CT	65 GWh	May 2010	Dec 2025	Natural Gas : 99.9%
VPPSA Project 10	Vermont Public Power Supply Authority	Swanton, VT	1 GWh	Apr 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
Lebanon Pines 1 & 2	Connecticut Mun Elec Engy Coop	Lebanon, CT	374 MWh	Mar 2010	Dec 2025	Distillate Fuel Oil
Stetson Wind II	Evergreen Wind, LLC	Danforth, ME	55 GWh	Feb 2010	Dec 2025	Wind
Jewett City 1	Connecticut Mun Elec Engy Coop	Jewett City, CT	139 MWh	Jan 2010	Dec 2025	Distillate Fuel Oil
Princeton Wind Farm	Town of Princeton - (MA)	Princeton, MA	4 GWh	Dec 2009	Dec 2025	Wind
MA Military Reservation Wind Project	Air Force Civil Engineer Center	Otis ANG Base Bourne, MA	5 GWh	Nov 2009	Dec 2025	Wind
Fox Island Wind LLC	Fox Island Wind LLC	Vinalhaven, ME	9 GWh	Oct 2009	Dec 2025	Wind
Kibby Wind Facility	Helix Maine Wind Development, LLC	Chain of Ponds, ME	245 GWh	Sep 2009	Jul 2026	Wind
HSCo CHP	Cartier Energy, LLC	Hartford, CT	28 GWh	Sep 2009	Dec 2025	Natural Gas
Waterbury Generation	Engie North America	Waterbury, CT	55 GWh	May 2009	Dec 2025	Natural Gas : 99.1% Kerosene : 0.9%
Cellu Tissue	Dunn Paper East Hartford, LLC	East Hartford, CT	11 GWh	Apr 2009	Jul 2026	Natural Gas
Waste Management Crossroads LFGTE	WM Renewable Energy LLC	Norridgewock, ME	22 GWh	Feb 2009	Dec 2025	Landfill Gas
Frito Lay Incorporated	Frito Lay Incorporated Dayville	Dayville, CT	25 GWh	Feb 2009	Jul 2026	Natural Gas
Wesleyan University Cogen 1	Wesleyan University	Middletown, CT	4 GWh	Jan 2009	Dec 2025	Natural Gas
Stetson Wind I	Evergreen Wind, LLC	Danforth, ME	146 GWh	Dec 2008	Dec 2025	Wind
Orono Hydro Station	Brookfield Black Bear Hydro, LLC	Orono, ME	6 GWh	Dec 2008	Dec 2025	Water
Lempster Wind LLC	Avangrid Power LLC	Lempster, NH	62 GWh	Nov 2008	Jul 2026	Wind
Beaver Ridge Wind	CPV Beaver Ridge Wind LLC	Freedom, ME	11 GWh	Oct 2008	Dec 2025	Wind
Smith College Central Heating Plant	The Trustees of Smith College	Northampton, MA	6 GWh	Sep 2008	Dec 2025	Natural Gas
Pepperidge Farm Bloomfield	Pepperidge Farm, Inc.- Bloomfield	Bloomfield, CT	15 GWh	Jul 2008	Dec 2024	Natural Gas
New Milford Gas Recovery	WM Renewable Energy LLC	New Milford, CT	4 GWh	Apr 2008	Dec 2025	Landfill Gas
Kimberly Clark-Unit 1,2,3	Kimberly-Clark Corporation	New Milford, CT	233 GWh	Mar 2008	Dec 2025	Natural Gas
Fitchburg Gas Recovery	WM Renewable Energy LLC	Westminster, MA	32 GWh	Sep 2007	Dec 2025	Landfill Gas
Fairfield University CHP Plant	Fairfield University	Fairfield, CT	23 GWh	Sep 2007	Dec 2025	Natural Gas
Central Heating Plant	University of Massachusetts Amherst	Amherst, MA	80 GWh	Sep 2007	Dec 2025	Natural Gas : 96.3% Distillate Fuel Oil : 3.7%
Jiminy Peak Wind QF	Jiminy Peak Mountain Resort, LLC	Hancock, MA	2 MWh	Jul 2007	Apr 2025	Wind
Amherst College Co Gen	Amherst College	Amherst, MA	8 GWh	Oct 2006	Dec 2025	Natural Gas
Eastern Maine Medical Center	Eastern Maine Medical Center	Bangor, ME	26 GWh	Sep 2006	Jul 2026	Natural Gas
UNH 7.9 MW Plant	Emcor Energy Services	Durham, NH	51 GWh	Aug 2006	Jul 2026	Landfill Gas : 52.2% Natural Gas : 45.1% Distillate Fuel Oil : 2.7%
UCONN Cogen Facility	University of Connecticut	Storrs, CT	111 GWh	Feb 2006	Jul 2026	Natural Gas : 95.1% Distillate Fuel Oil : 4.9%

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	433.0 GWh	4
#24	Dominion Energy South Carolina, Inc.	26.1 TWh	83
#13	Duke Energy Carolinas	113.4 TWh	578
#17	Duke Energy Progress East	66.2 TWh	574
#50	Duke Energy Progress West	4.6 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	34.2 TWh	25
#12	New York Independent System Operator	134.1 TWh	1,334
#1	PJM Interconnection, LLC	890.9 TWh	2,806
#28	South Carolina Public Service Authority	19.6 TWh	35
#59	Southeastern Power Administration	1.2 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	168.7 TWh	2,170
#9	Tennessee Valley Authority	166.2 TWh	209
#10	Florida Power & Light Co.	153.0 TWh	188
#12	New York Independent System Operator	134.1 TWh	1,334
#13	Duke Energy Carolinas	113.4 TWh	578
#15	ISO New England	112.2 TWh	1,667
#16	Bonneville Power Administration	91.1 TWh	170
#17	Duke Energy Progress East	66.2 TWh	574
#18	PacifiCorp East	61.4 TWh	223
#19	Salt River Project Agricultural Improvement and Power District	60.5 TWh	51