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
Farley Road Community Solar	Farley Road Solar, LLC	Dudley, MA	2 GWh	Jul 2017	Dec 2025	Solar
Belchertown Renewables Community Solar	Belchertown Renewables, LLC	Belchertown, MA	6 GWh	Feb 2018	Dec 2025	Solar
Theodore Drive Community Solar	Theodore Drive Solar, LLC	Westminster, MA	2 GWh	Feb 2018	Dec 2025	Solar
Upton Community Solar	Upton Solar, LLC	Upton, MA	3 GWh	Aug 2017	Dec 2025	Solar
Pleasantdale Road Community Solar	Pleasantdale Road Solar, LLC	Rutland, MA	1 GWh	Aug 2017	Dec 2025	Solar
Hatfield Renewables Community Solar	Hatfield Renewables, LLC	Hatfield, MA	3 GWh	Aug 2017	Dec 2025	Solar
Peterson Road Solar	Peterson Road Solar, LLC	Palmer, MA	4 GWh	Mar 2017	Dec 2025	Solar
Sampson Road Community Solar	Sampson Road Solar, LLC	Charlton, MA	3 GWh	Nov 2017	Dec 2025	Solar
Golden Hills Solar	Golden Hills Solar, LLC	Rutland, MA	7 GWh	Aug 2017	Dec 2025	Solar
Next Generation Solar Farm	Cypress Creek Renewables	New Haven, VT	4 GWh	Nov 2017	Dec 2025	Solar
Grafton PV	MN8 Energy LLC	Grafton, MA	4 GWh	Sep 2016	Dec 2025	Solar
Barrett PV	MN8 Energy LLC	Oxford, MA	17 GWh	Oct 2016	Dec 2025	Solar
MDFA Devens-Saratoga	Terraform Arcadia	Devens, MA	3 GWh	Feb 2016	Dec 2025	Solar
Smith & Wesson at Springfield MA PV	Luminace Solar Massachusetts, LLC	Springfield, MA	2 GWh	Jun 2017	Dec 2025	Solar
Centaurus Solar - MA	LSE Centaurus LLC	Ashland, MA	3 GWh	Oct 2016	Dec 2025	Solar
Kearsarge Bellingham PV	Kearsarge Bellingham LLC	Bellingham, MA	5 GWh	Nov 2016	Dec 2025	Solar
Canis Major Solar Farm	LSE Canis Major LLC	Suffield, CT	3 GWh	Nov 2016	Dec 2025	Solar
Ashby Duffy CSG Solar Farm	LSE Cassiopeia LLC	Ashby, MA	3 GWh	Nov 2017	Dec 2025	Solar
West Boylston Community Shared Solar	Town of West Boylston - (MA)	West Boylston, MA	447 MWh	Nov 2016	Dec 2025	Solar
Big George PV CSG	Altus Power America Management, LLC	Plymouth, MA	1 GWh	Aug 2018	Dec 2025	Solar
North Smithfield Solar Power 1	Onsite Partners, LLC	North Smithfield, RI	2 GWh	Nov 2018	Dec 2025	Solar
301 Chestnut Solar NG	NuGen Capital Management	East Longmeadow, MA	2 GWh	Mar 2017	Dec 2025	Solar
Weston Landfill Solar	Ameresco, Inc - Weston	Weston, MA	3 GWh	Feb 2016	Dec 2025	Solar
Braintree Landfill Solar	Ameresco, Inc - Braintree	Braintree, MA	1 GWh	Nov 2014	Dec 2025	Solar
GELD Solar Farm	Ameresco, Inc - GELD	Groton, MA	3 GWh	May 2016	Dec 2025	Solar
Town of Rocky Hill PV CSG	Tesla Inc.	Rocky Hill, CT	5 GWh	Feb 2018	Dec 2025	Solar
DG Haverhill CSG	DG Haverhill LLC	Haverhill, MA	7 GWh	Aug 2017	Dec 2025	Solar
DG Crystal Spring CSG	DG Crystal Spring LLC	Mattapoisett, MA	7 GWh	Jun 2017	Dec 2025	Solar
Falmouth Landfill Solar	Citizens Enterprises Corporation	Falmouth, MA	5 GWh	Mar 2017	Dec 2025	Solar
DG Foxborough Elm CSG	DG Foxborough Elm LLC	Foxborough, MA	3 GWh	Jul 2017	Dec 2025	Solar
Town of Foxborough - Landfill (SREC II)	Town of Foxborough - Landfill (SREC II)	Foxborough, MA	2 GWh	Jul 2017	Dec 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
CED Chicopee Solar	RWE Clean Energy	Chicopee, MA	5 GWh	Jun 2017	Dec 2025	Solar
UMASS	RWE Clean Energy	Amherst, MA	5 GWh	Sep 2016	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
West Brookfield Solar - Gilbertsville Rd	Nautilus Solar Solutions	West Brookfield, MA	5 GWh	May 2017	Dec 2025	Solar
DG Tufts Science LLC CSG	DG Tufts Science, LLC	North Grafton, MA	1 GWh	Jan 2017	Dec 2025	Solar
DG Dighton LLC CSG	DG Dighton, LLC	Dighton, MA	5 GWh	Jun 2017	Dec 2025	Solar
DG Tufts Knoll LLC CSG	DG Tufts Knoll, LLC	North Grafton, MA	3 GWh	Jul 2017	Dec 2025	Solar
DG Webster LLC CSG	DG Webster, LLC	Webster, MA	2 GWh	Nov 2017	Dec 2025	Solar
Texon Hydroelectric Project	Hitchcock Hydro, LLC	Russell, MA	4 GWh	Dec 1981	Dec 2025	Water
Greater New Bedford LFG Utiliz. Facility	CommonWealth New Bedford Energy LLC	New Bedford, MA	13 GWh	Sep 2005	Dec 2025	Landfill Gas
Sikorsky Aircraft CHP	Sikorsky Aircraft Corporation	Stratford, CT	65 GWh	May 2010	Dec 2025	Natural Gas : 99.9%
Onyx - Pembroke Landfill Solar	Onyx Asset Services Group	Pembroke, MA	3 GWh	Nov 2017	Dec 2025	Solar
Onyx - Brockton Thatcher Landfill Solar	Onyx Asset Services Group	Brockton, MA	5 GWh	Oct 2017	Dec 2025	Solar
MA Solar Storage 1 Hybrid	Origis Energy USA, Inc	Sterling, MA	1 GWh	Feb 2018	Dec 2025	Solar
Solten Plainville 6000, LLC	Altus Power America Management, LLC	Plainville, MA	7 GWh	Jul 2017	Dec 2025	Solar
Randolph	Altus Power America Management, LLC	Randolph, MA	6 GWh	Oct 2017	Dec 2025	Solar
East Acres Solar NG, LLC	NuGen Capital Management	Pittsfield, MA	5 GWh	Mar 2017	Dec 2025	Solar
Syncarpha Hancock I CSG	Syncarpha Hancock I, LLC	Hancock, MA	3 GWh	Oct 2017	Dec 2025	Solar
Syncarpha Hancock II CSG	Syncarpha Hancock II, LLC	Hancock, MA	3 GWh	Oct 2017	Dec 2025	Solar
Syncarpha Hancock III CSG	Syncarpha Hancock III, LLC	Pittsfield, MA	1 GWh	Oct 2017	Dec 2025	Solar
Syncarpha Still River, LLC CSG	Syncarpha Still River, LLC	Bolton, MA	4 GWh	Nov 2016	Dec 2025	Solar
Kearsarge Concord II	Kearsarge Concord II LLC	Concord, MA	7 GWh	Dec 2016	Dec 2025	Solar
Kearsarge Granby	Kearsarge Granby LLC	Granby, MA	4 GWh	Feb 2017	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%
Hope Farm Solar, LLC	Adapture Renewables, Inc.	Cranston, RI	16 GWh	Aug 2019	Dec 2025	Solar
Toray Plastic America's CHP Plant	Toray Plastics America	North Kingstown, RI	157 GWh	Dec 2002	Dec 2025	Natural Gas
Saint Albans Solar	Cypress Creek Renewables	Georgia, VT	7 GWh	Sep 2018	Dec 2025	Solar
Franklin Solar (CT)	Ecos Energy LLC	Lebanon, CT	2 GWh	Feb 2018	Dec 2025	Solar
Wilson Solar (CT)	Ecos Energy LLC	Lebanon, CT	2 GWh	Feb 2018	Dec 2025	Solar
Jefferson Solar (CT)	Ecos Energy LLC	Lebanon, CT	2 GWh	Dec 2017	Dec 2025	Solar
Hamilton Solar	Ecos Energy LLC	Lebanon, CT	2 GWh	Feb 2018	Dec 2025	Solar
Adams Solar	Ecos Energy LLC	Lebanon, CT	2 GWh	Feb 2018	Dec 2025	Solar
Wareham Solar PV	NSTAR Electric Company	Wareham, MA	1 GWh	Nov 2018	Dec 2025	Solar
East Longmeadow Solar PV	NSTAR Electric Company	East Longmeadow, MA	8 GWh	Sep 2019	Dec 2025	Solar
Greenfield Solar PV	NSTAR Electric Company	Greenfield, MA	3 GWh	Dec 2018	Dec 2025	Solar
Hinsdale Solar PV	NSTAR Electric Company	Hinsdale, MA	3 GWh	Dec 2018	Dec 2025	Solar
Savoy Solar PV	NSTAR Electric Company	Savoy, MA	3 GWh	Jan 2019	Dec 2025	Solar
Southampton Solar PV	NSTAR Electric Company	Southampton, MA	3 GWh	Jan 2019	Dec 2025	Solar
Springfield Solar PV	NSTAR Electric Company	Springfield, MA	6 GWh	Dec 2018	Dec 2025	Solar
Hampden Solar PV	NSTAR Electric Company	Hampden, MA	6 GWh	Oct 2019	Dec 2025	Solar
Town of Branford	Tesla Inc.	Branford, CT	2 GWh	May 2018	Dec 2025	Solar
Sunderland Solar PV	NSTAR Electric Company	Sunderland, MA	2 GWh	Aug 2018	Dec 2025	Solar
Hatfield Solar PV	NSTAR Electric Company	Hatfield, MA	5 GWh	Nov 2018	Dec 2025	Solar
East Springfield Solar PV	NSTAR Electric Company	Springfield, MA	2 GWh	Sep 2018	Dec 2025	Solar
Ludlow Site 72 - Conti	NSTAR Electric Company	Ludlow, MA	3 GWh	Jul 2018	Dec 2025	Solar
WED Plainfield II, LLC	WED Plainfield II, LLC	Johnston, RI	8 GWh	Dec 2018	Dec 2025	Wind
WED Plainfield III, LLC	WED Plainfield III, LLC	Johnston, RI	7 GWh	Dec 2018	Dec 2025	Wind
WED Plainfield, LLC	WED Plainfield, LLC	Johnston, RI	7 GWh	Dec 2018	Dec 2025	Wind
WED Shun II, LLC	WED Shun II, LLC	Johnston, RI	7 GWh	Dec 2018	Dec 2025	Wind
WED Shun III, LLC	WED Shun III, LLC	Johnston, RI	8 GWh	Dec 2018	Dec 2025	Wind
WED GW Solar, LLC	CleanCapital Holdings	Lincoln, RI	4 GWh	Dec 2018	Dec 2025	Solar
Palmer	AES Distributed Energy	Palmer, MA	6 GWh	Sep 2019	Dec 2025	Solar
Hadley 2 Solar, LLC CSG	Hadley 2 Solar, LLC	Hadley, MA	3 GWh	Nov 2016	Dec 2025	Solar
East Bridgewater Solar	Altus Power America Management, LLC	East Bridgewater, MA	3 GWh	Oct 2017	Dec 2025	Solar
Griffin Road Solar, LLC CSG	Griffin Road Solar, LLC	Charlton, MA	3 GWh	Feb 2018	Dec 2025	Solar
Ashby Solar, LLC CSG	Ashby Solar, LLC	Fitchburg, MA	3 GWh	Jun 2018	Dec 2025	Solar
Dudley Solar CSG	Dudley Solar, LLC	Dudley, MA	3 GWh	Jul 2017	Dec 2025	Solar
Williamsburg	AES Distributed Energy	Goshen, MA	6 GWh	Jun 2019	Dec 2025	Solar
Monson Solar, LLC	Monson Solar, LLC	Monson, MA	3 GWh	Jul 2017	Dec 2025	Solar
Westminster Renewables, LLC CSG	Westminster Renewables, LLC	Westminster, MA	2 GWh	Sep 2018	Dec 2025	Solar
Pittsfield 44 - M&W PV	NSTAR Electric Company	Pittsfield, MA	2 GWh	Jul 2018	Dec 2025	Solar
Lee Site 31 Solar	NSTAR Electric Company	Lee, MA	149 MWh	Jul 2018	Dec 2025	Solar
Plymouth Solar	NSTAR Electric Company	Plymouth, MA	2 GWh	May 2018	Dec 2025	Solar
North Stonington Solar Center, LLC	Adapture Renewables, Inc.	North Stonington, CT	32 GWh	Sep 2022	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