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
Berkley East Solar LLC	SunEdison LLC	Berkley, MA	5 GWh	Jun 2013	Dec 2025	Solar
Methuen Landfill	CleanCapital Holdings	Methuen, MA	2 GWh	Jun 2013	Dec 2025	Solar
Northbridge Solar	RWE Clean Energy	South Grafton, MA	3 GWh	Jul 2013	Dec 2025	Solar
Ludlow Landfill	CleanCapital Holdings	Ludlow, MA	3 GWh	Jul 2013	Dec 2025	Solar
WYM 1250 Palmer LLC	CVI CleanCapital Solar 6	Palmer, MA	1 GWh	Aug 2013	Dec 2025	Solar
Hunt Farm Solar	Altus Power America Management, LLC	Orange, MA	3 GWh	Aug 2013	Dec 2025	Solar
Stillwater B	Brookfield Black Bear Hydro, LLC	Old Town, ME	9 GWh	Aug 2013	Dec 2025	Water
Sheldon Solar	Excelsior Energy Capital	Sheldon Springs, VT	2 GWh	Aug 2013	Dec 2025	Solar
Open View Solar Farm	Cross Pollination Inc	New Haven, VT	3 GWh	Aug 2013	Dec 2025	Solar
Bellingham PV	Terraform Arcadia	Douglas, MA	4 GWh	Sep 2013	Dec 2025	Solar
Adams Farm Solar	Altus Power America Management, LLC	Athol, MA	4 GWh	Sep 2013	Dec 2025	Solar
Grafton Solar	CD US Solar MT 2 LLC	Grafton, MA	2 GWh	Sep 2013	Dec 2025	Solar
Nextsun Energy Littleton	Greenbacker Renewable Energy Corporation	Littleton, MA	5 GWh	Sep 2013	Dec 2025	Solar
Scituate PV	AES Distributed Energy	Scituate, MA	3 GWh	Sep 2013	Dec 2025	Solar
Plymouth Site 1	CleanCapital Holdings	Plympton, MA	7 GWh	Sep 2013	Dec 2025	Solar
Easton Landfill	CleanCapital Holdings	Easton, MA	3 GWh	Sep 2013	Dec 2025	Solar
Burgess BioPower	Berlin Station, LLC	Berlin, NH	390 GWh	Oct 2013	Dec 2025	Wood/Wood Waste Solids
Orono B	Brookfield Black Bear Hydro, LLC	Orono, ME	17 GWh	Oct 2013	Dec 2025	Water
Dept of Corrections NCCI Wind	Dept of Corrections NCCI Wind	Gardner, MA	2 GWh	Oct 2013	May 2026	Wind
Brockelman	Integrys MA Solar, LLC	Lancaster, MA	5 GWh	Oct 2013	Dec 2025	Solar
Franklin 1	CD US Solar MT 2 LLC	Wrentham, MA	4 GWh	Oct 2013	Dec 2025	Solar
Brookfield Solar 2013 LLC	CVI CleanCapital Solar 6	North Brookfield, MA	3 GWh	Nov 2013	Dec 2025	Solar
Morin Solar 2013 LLC	CVI CleanCapital Solar 6	Warren, MA	5 GWh	Nov 2013	Dec 2025	Solar
Limerick Road Solar Farm	Limerick Road Solar, LLC	Shelburne, VT	3 GWh	Nov 2013	Dec 2025	Solar
Lowell Solar Landfill	Heliovaas LLC	Lowell, MA	1 GWh	Nov 2013	Dec 2025	Solar
Leominster (MA)-South Street-R&D	South Street Solar, LLC	Tewksbury, MA	3 GWh	Nov 2013	Dec 2025	Solar
Acton Solar Landfill	Heliovaas LLC	Acton, MA	475 MWh	Nov 2013	Dec 2025	Solar
KS Solar Six LLC	Kearsarge Solar LLC	Hubbardston, MA	3 GWh	Nov 2013	Dec 2025	Solar
St. Albans SPEED Project	St. Albans Solar Partners, LLC	St. Albans, VT	2 GWh	Nov 2013	Dec 2024	Solar
Franklin 2	CD US Solar MT 2 LLC	Franklin, MA	6 GWh	Nov 2013	Dec 2025	Solar
Rockland Solar CSG	MN8 Energy LLC	Rockland, MA	2 GWh	Nov 2013	Dec 2025	Solar
Plainfield Renewable Energy LLC	Plainfield Renewable Energy, LLC	Plainfield, CT	245 GWh	Nov 2013	Dec 2025	Wood/Wood Waste Solids : 99.3% Other Biomass Liquids : 0.7%
West Davisville Solar	Altus Power America Management, LLC	North Kingstown, RI	3 GWh	Nov 2013	Dec 2025	Solar
Chicopee Solar	Citizens Enterprises Corporation	Chicopee, MA	4 GWh	Nov 2013	Dec 2025	Solar
Rehoboth Solar	Citizens Enterprises Corporation	Rehoboth, MA	3 GWh	Nov 2013	Dec 2025	Solar
Stow PV	AES Distributed Energy	Stow, MA	3 GWh	Nov 2013	Dec 2025	Solar
Bolton PV	AES Distributed Energy	Bolton, MA	6 GWh	Nov 2013	Dec 2025	Solar
Integrys MA Solar, LLC - Ashburnham Site	Integrys MA Solar, LLC	Ashburnham, MA	3 GWh	Nov 2013	Dec 2025	Solar
Ravenbrook	Captona Ravenbrook LLC	Carver, MA	6 GWh	Nov 2013	Dec 2025	Solar
Sudbury Landfill	Heliovaas LLC	Sudbury, MA	1 GWh	Nov 2013	Dec 2025	Solar
Quittacas Pond Solar	RWE Clean Energy	Rochester, MA	5 GWh	Nov 2013	Dec 2025	Solar
Marshfield PV	Terraform Arcadia	Marshfield, MA	5 GWh	Nov 2013	Dec 2025	Solar
Erving Paper Mills	Erving Paper Mills Inc	Erving, MA	42 GWh	Nov 2013	May 2026	Natural Gas : 98.0% Distillate Fuel Oil : 2.0%
Forbes Street Solar	Altus Power America Management, LLC	East Providence, RI	4 GWh	Nov 2013	Dec 2025	Solar
Merrimac Solar	RWE Clean Energy	Merrimac, MA	2 GWh	Nov 2013	Dec 2025	Solar
Somers Solar Center, LLC	Onward Energy	Somers, CT	9 GWh	Nov 2013	Dec 2025	Solar
Bridgeport Fuel Cell, LLC	Bridgeport Fuel Cell, LLC	Bridgeport, CT	90 GWh	Nov 2013	Dec 2025	Natural Gas
Cape Cod Air Force Station - 6 SWS	US Space Force	Sagamore, MA	6 GWh	Dec 2013	May 2026	Wind
Maynard PV	Terraform Arcadia	Maynard, MA	1 GWh	Dec 2013	Dec 2025	Solar
Southbridge PV	Terraform Arcadia	Southbridge, MA	4 GWh	Dec 2013	Dec 2025	Solar
Danton XI Solar LLC	Danton XI Solar LLC	Methuen, MA	2 GWh	Dec 2013	Dec 2025	Solar
Little Bay	Altus Power America Management, LLC	Providence, RI	1 GWh	Feb 2014	Dec 2025	Solar
Walpole Solar 2	Walpole Solar 2, LLC	Walpole, MA	4 GWh	Mar 2014	Dec 2025	Solar
Browne Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2025	Solar
Indian Hill Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2025	Solar
State Street Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2025	Solar
Westborough Solar LLC	SunRay Power LLC	Westborough, MA	2 GWh	Mar 2014	Dec 2024	Solar
Dartmouth	Mass Solar, LLC	Dartmouth, MA	6 GWh	Mar 2014	Dec 2025	Solar
Winchendon Solar	Altus Power America Management, LLC	Winchendon, MA	3 GWh	Mar 2014	Dec 2025	Solar
Millbury Solar	Evergreen Wind, LLC	Millbury, MA	5 GWh	Mar 2014	Dec 2025	Solar
Concord Solar Farm	Kearsarge Solar LLC	Concord, MA	2 GWh	Mar 2014	Dec 2025	Solar
Barre II Solar Project	Kearsarge Solar LLC	Barre, MA	2 GWh	Mar 2014	Dec 2025	Solar
Green Meadows	Altus Power America Management, LLC	Sandwich, MA	5 GWh	Apr 2014	Dec 2025	Solar
Mass Midstate Solar 3	Evergreen Wind, LLC	Warren, MA	6 GWh	Apr 2014	Dec 2025	Solar
Beverly	Integrys MA Solar, LLC	Beverly, MA	3 GWh	Apr 2014	Dec 2025	Solar
Mass Midstate Solar 2	Evergreen Wind, LLC	Warren, MA	7 GWh	Apr 2014	Dec 2025	Solar
Gardner Solar 1	Gardner Solar 1, LLC	Gardner, MA	3 GWh	Apr 2014	Dec 2025	Solar
Tihonet Solar	RWE Clean Energy	Wareham, MA	2 GWh	Apr 2014	Dec 2025	Solar
Mass Midstate Solar 1	Evergreen Wind, LLC	Warren, MA	7 GWh	Apr 2014	Dec 2025	Solar
Cottage Street Solar Facility	Western Massachusetts Electric Company	Springfield, MA	4 GWh	Apr 2014	May 2026	Solar
Stetson Road Solar - Barre I	Kearsarge Solar LLC	Barre, MA	2 GWh	Apr 2014	Dec 2025	Solar
Nunnepog	Clean Focus Yield, LLC	Edgartown, MA	2 GWh	May 2014	Dec 2025	Solar
Southern Sky Renew Energy Berkley LLC	Southern Sky Renewable Energy Berkley, LLC	Berkley, MA	4 GWh	May 2014	Dec 2025	Solar
Lepomis PV Energy LLC	CleanCapital Holdings	Plymouth, MA	8 GWh	May 2014	Dec 2025	Solar
Katama Farm	Clean Focus Yield, LLC	Edgartown, MA	2 GWh	May 2014	Dec 2025	Solar
Hartford Landfill Solar EGF	Materials Innovation Recycling Authority	Hartford, CT	1 GWh	May 2014	Dec 2024	Solar
651 Chase Solar NG	NuGen Capital Management	Lunenburg, MA	4 GWh	May 2014	Dec 2025	Solar
Fairview Farms Solar	NuGen Capital Management	Whately, MA	3 GWh	May 2014	Dec 2025	Solar
Devens	Altus Power America Management, LLC	Shirley, MA	5 GWh	May 2014	Dec 2025	Solar
Ayers Village Solar	Altus Power America Management, LLC	Methuen, MA	3 GWh	May 2014	Dec 2025	Solar
Antares-GRE 314 East Lyme LLC	MN8 Energy LLC	East Lyme, CT	4 GWh	May 2014	May 2026	Solar
North Brookfield	Mass Solar, LLC	North Brookfield, MA	4 GWh	May 2014	Dec 2025	Solar
201 Sturbridge B	Altus Power America Management, LLC	Brimfield, MA	2 GWh	May 2014	Dec 2025	Solar
205 Sturbridge A	Altus Power America Management, LLC	Brimfield, MA	4 GWh	May 2014	Dec 2025	Solar
Chester Solar Farm	Kearsarge Solar LLC	Chester, MA	6 GWh	May 2014	Dec 2025	Solar
Stone Hill Solar CSG	MN8 Energy LLC	North Easton, MA	2 GWh	Jun 2014	Dec 2025	Solar
EDF Lancaster	CleanCapital Holdings	Lancaster, MA	5 GWh	Jun 2014	Dec 2025	Solar
Oxford	CVI CleanCapital Solar 6	Oxford, MA	3 GWh	Jun 2014	Dec 2025	Solar
Monson Solar	Altus Power America Management, LLC	Monson, MA	4 GWh	Jun 2014	Dec 2025	Solar
Clarendon Solar Farm	Clarendon Solar Farm, LLC	North Clarendon, VT	3 GWh	Jun 2014	Dec 2025	Solar
Claire Solar Farm	Claire Solar Partners LLC	South Burlington, VT	4 GWh	Jun 2014	Dec 2024	Solar
Hadley Solar NG, LLC	NuGen Capital Management	Hadley, MA	3 GWh	Jun 2014	Dec 2025	Solar
265 Pleasant Solar NG, LLC	NuGen Capital Management	Lunenburg, MA	1 GWh	Jun 2014	Dec 2025	Solar
Tisbury Landfill Solar	Clean Focus Yield, LLC	Tisbury, MA	2 GWh	Jun 2014	Dec 2025	Solar
Charlotte Solar LLC VT	Altus Power America Management, LLC	Charlotte, VT	3 GWh	Jun 2014	Dec 2025	Solar
Upper Blackstone (MA) Treasure Valley	Nexamp Treasure Valley Solar, LLC	Rutland, MA	6 GWh	Jun 2014	Dec 2025	Solar
New Bedford (MA) Plymouth	BWC Origination 4, LLC	Plymouth, MA	7 GWh	Jun 2014	Dec 2025	Solar
Harwich Landfill	Clean Focus Yield, LLC	Harwich, MA	6 GWh	Jul 2014	Dec 2025	Solar
Coventry Photovoltaic, LLC	Coventry Photovoltaic, LLC	Coventry, VT	3 GWh	Jul 2014	Dec 2025	Solar
Backus Microgrid Project	Connecticut Mun Elec Engy Coop	Norwich, CT	843 MWh	Jul 2014	May 2026	Distillate Fuel Oil

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