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
515 Main Saugus	515 Main Saugus LLC	Saugus, MA	2 GWh	Aug 2017	Dec 2025	Solar
BWC Origination 8 LLC Sturbridge 2	BWC Origination 8 LLC Sturbridge 2 LLC	Sturbridge, MA	1 GWh	Aug 2017	Dec 2025	Solar
Oneida County- DPW	Tesla Inc.	Oriskany, NY	1 GWh	Sep 2017	Dec 2025	Solar
Redbrook Community Solar 1	Redbrook Solar 1, LLC	Plympton, MA	1 GWh	Sep 2017	Dec 2025	Solar
Barrett Farm Solar - Phase I	Onyx Asset Services Group	Thompson, CT	3 GWh	Sep 2017	Dec 2024	Solar
Barton Acres Solar, LLC CSG	38 Degrees North, LLC	Phillipston, MA	2 GWh	Sep 2017	Dec 2025	Solar
Cohasse Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	1 GWh	Sep 2017	Dec 2025	Solar
Canton Mountain Wind	CPV Canton Mountain Wind LLC	Canton, ME	56 GWh	Oct 2017	Dec 2025	Wind
DDR Shoppers World	Altus Power America Management, LLC	Framingham, MA	2 GWh	Oct 2017	Dec 2025	Solar
Northampton Landfill Solar PV	Ameresco Glendale Road Solar PV LLC	Northampton, MA	2 GWh	Oct 2017	Dec 2025	Solar
VEC Magee Hill Solar	SoCore Energy LLC	Hinesburgh, VT	2 GWh	Oct 2017	Dec 2025	Solar
BWC Wading River One, Two, Three CSG	Ameresco BWC Wading River LLC	Mendon, MA	2 GWh	Oct 2017	Dec 2025	Solar
Elizabeth Mines Solar 1	Elizabeth Mines Solar 1, LLC	So. Strafford, VT	7 GWh	Oct 2017	Dec 2025	Solar
Onyx - Brockton Thatcher Landfill Solar	Onyx Asset Services Group	Brockton, MA	5 GWh	Oct 2017	Dec 2025	Solar
Randolph	Altus Power America Management, LLC	Randolph, MA	6 GWh	Oct 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
East Bridgewater Solar	Altus Power America Management, LLC	East Bridgewater, MA	3 GWh	Oct 2017	Dec 2025	Solar
Cherry Valley Solar, LLC CSG	38 Degrees North, LLC	Leicester, MA	2 GWh	Oct 2017	Dec 2025	Solar
Incom Solar, LLC CSG	38 Degrees North, LLC	Charlton, MA	3 GWh	Oct 2017	Dec 2025	Solar
JH Solar, LLC CSG	38 Degrees North, LLC	North Brookfield, MA	2 GWh	Oct 2017	Dec 2025	Solar
Dudley River 3 Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2025	Solar
Dudley River 2 Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2025	Solar
Dudley River Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2025	Solar
Ledeaux Solar, LLC CSG	38 Degrees North, LLC	North Brookfield, MA	1 GWh	Oct 2017	Dec 2025	Solar
Nolan	LSE Crater LLC	Great Barrington, MA	2 GWh	Oct 2017	Dec 2024	Solar
Truck Stop	LSE Corona Austrina LLC	West Stockridge, MA	3 GWh	Oct 2017	Dec 2024	Solar
Dartmouth Farms Solar	Dartmouth Farms Solar, LLC	Dartmouth, MA	4 GWh	Oct 2017	Dec 2025	Solar
Webster Solar	Webster Solar, LLC	Webster, MA	1 GWh	Nov 2017	Dec 2025	Solar
Norcap South	LSE Coma Berenices LLC	East Windsor, CT	4 GWh	Nov 2017	Dec 2025	Solar
Norcap North	LSE Canes Venatici LLC	East Windsor, CT	3 GWh	Nov 2017	Dec 2024	Solar
Deerfield CSG Solar	MN8 Energy LLC	Deerfield, MA	4 GWh	Nov 2017	Dec 2025	Solar
Stafford St Solar 1 CSG	Stafford St Solar 1, LLC	Leicester, MA	4 GWh	Nov 2017	Dec 2024	Solar
Stafford St Solar 3 CSG	Stafford St Solar 3, LLC	Leicester, MA	2 GWh	Nov 2017	Dec 2024	Solar
Deerfield Wind LLC	Avangrid Power LLC	Searsburg, VT	92 GWh	Nov 2017	May 2026	Wind
Sampson Road Community Solar	Sampson Road Solar, LLC	Charlton, MA	3 GWh	Nov 2017	Dec 2025	Solar
Next Generation Solar Farm	Cypress Creek Renewables	New Haven, VT	4 GWh	Nov 2017	Dec 2025	Solar
Ashby Duffy CSG Solar Farm	LSE Cassiopeia LLC	Ashby, MA	3 GWh	Nov 2017	Dec 2025	Solar
CED Foster	RWE Clean Energy	Foster, RI	3 GWh	Nov 2017	May 2026	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
DG Webster LLC CSG	DG Webster, LLC	Webster, MA	2 GWh	Nov 2017	Dec 2025	Solar
Onyx - Pembroke Landfill Solar	Onyx Asset Services Group	Pembroke, MA	3 GWh	Nov 2017	Dec 2025	Solar
Kearsarge Wilmington	Kearsarge Wilmington LLC	Wilmington, MA	2 GWh	Nov 2017	Dec 2025	Solar
Ajax Solar, LLC (MA)	Green Street Power Partners	West Bridgewater, MA	4 GWh	Nov 2017	Dec 2025	Solar
St. Joseph's Solar, LLC CSG	38 Degrees North, LLC	Charlton, MA	2 GWh	Nov 2017	Dec 2025	Solar
Blair Wire Village Solar, LLC CSG	38 Degrees North, LLC	Spencer, MA	2 GWh	Nov 2017	Dec 2025	Solar
ISM Solar Dighton 2, LLC CSG	38 Degrees North, LLC	Dighton, MA	4 GWh	Nov 2017	Dec 2025	Solar
Woodchuck Solar, LLC CSG	38 Degrees North, LLC	Spencer, MA	2 GWh	Nov 2017	Dec 2025	Solar
Palombo Solar, LLC CSG	38 Degrees North, LLC	Uxbridge, MA	3 GWh	Nov 2017	Dec 2025	Solar
Palombo B Solar, LLC CSG	38 Degrees North, LLC	Uxbridge, MA	2 GWh	Nov 2017	Dec 2025	Solar
Pittsfield Solar LLC	Pittsfiled Solar LLC	Pittsfield, ME	15 GWh	Nov 2017	Dec 2025	Solar
Mendon	BWC Box Pond LLC	Mendon, MA	4 GWh	Nov 2017	Dec 2024	Solar
Jefferson Solar (CT)	Ecos Energy LLC	Lebanon, CT	2 GWh	Dec 2017	Dec 2025	Solar
West Water Street	City of Taunton - (MA)	Taunton, MA	2 GWh	Dec 2017	Dec 2025	Distillate Fuel Oil
Kearsarge Gill	Kearsarge Gill LLC	Gill, MA	3 GWh	Dec 2017	Dec 2025	Solar
Greene County Meter #1	Tesla Inc.	Cairo, NY	2 GWh	Jan 2018	Dec 2025	Solar
ALDI DC 2	Powerflex	South Windsor, CT	1 GWh	Jan 2018	Dec 2025	Solar
Fusion Solar Center LLC	Fusion Solar Centre, L.L.C	Baltic, CT	38 GWh	Feb 2018	May 2026	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
Town of Rocky Hill PV CSG	Tesla Inc.	Rocky Hill, CT	5 GWh	Feb 2018	Dec 2025	Solar
MA Solar Storage 1 Hybrid	Origis Energy USA, Inc	Sterling, MA	1 GWh	Feb 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
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
Griffin Road Solar, LLC CSG	Griffin Road Solar, LLC	Charlton, MA	3 GWh	Feb 2018	Dec 2025	Solar
Barre Solar III LLC	AES Distributed Energy	Barre, MA	1 GWh	Feb 2018	Dec 2025	Solar
Becton Dickinson Ground & Roof Top	Madison Energy Investments LLC	North Canaan, CT	3 GWh	Feb 2018	Dec 2025	Solar
Corbin Russwin Phase 3 Berlin	Powerflex	Berlin, CT	2 GWh	Mar 2018	Dec 2025	Solar
Boutillier Solar, LLC CSG	38 Degrees North, LLC	Leicester, MA	5 GWh	Mar 2018	Dec 2025	Solar
CPV Towantic Energy Center	CPV Towantic, LLC	Oxford, CT	6 TWh	Apr 2018	May 2026	Natural Gas
Salem Harbor Power Development LP	Salem Harbor Power Development LP	Salem, MA	2 TWh	Apr 2018	May 2026	Natural Gas
Stafford St 2 Community Solar	Stafford St Solar 2, LLC	Lecister, MA	4 GWh	Apr 2018	Dec 2024	Solar
Ticket Network South Windsor	Powerflex	South Windsor, CT	2 GWh	Apr 2018	Dec 2024	Solar
Joe Jenny	AMP MA Joe Jenny	Oxford, MA	2 GWh	Apr 2018	Dec 2024	Solar
Town of Branford	Tesla Inc.	Branford, CT	2 GWh	May 2018	Dec 2025	Solar
Plymouth Solar	NSTAR Electric Company	Plymouth, MA	2 GWh	May 2018	Dec 2025	Solar
Kearsarge Montague	Kearsarge Montague LLC	Montague, MA	7 GWh	May 2018	Dec 2025	Solar
Middleton Solar Park	Novis Renewables, LLC	Middleton, MA	7 GWh	May 2018	Dec 2024	Solar
SELCO Community Solar	Massachusetts Mun Wholes Electric Co	Shrewsbury, MA	5 GWh	May 2018	Dec 2025	Solar
Lilly Lane	LSE Chamaeleon LLC	Charlton, MA	2 GWh	May 2018	Oct 2025	Solar
Sturbridge Barn	LSE Ara LLC	Charlton, MA	2 GWh	May 2018	Dec 2025	Solar
Bullock Road Solar 1	Bullock Road Solar 1, LLC	Freetown, MA	4 GWh	Jun 2018	Dec 2025	Solar
Ashby Solar, LLC CSG	Ashby Solar, LLC	Fitchburg, MA	3 GWh	Jun 2018	Dec 2025	Solar
Dudley	AMP MA Dudley	Dudley, MA	8 GWh	Jun 2018	Dec 2025	Solar
Antanavica Solar	SunStrong Management, LLC	Leicester, MA	1 GWh	Jul 2018	Dec 2024	Solar
Trinity College Fuel Cell	Onsite Partners, LLC	Hartford, CT	12 GWh	Jul 2018	Dec 2024	Natural Gas
Ludlow Site 72 - Conti	NSTAR Electric Company	Ludlow, MA	3 GWh	Jul 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
Kearsarge GB	Kearsarge GB LLC	Great Barrington, MA	3 GWh	Jul 2018	Dec 2025	Solar
Brattleboro (Windham Landfill)	Altus Power America Management, LLC	Brattleboro, VT	6 GWh	Jul 2018	Dec 2025	Solar
Big George PV CSG	Altus Power America Management, LLC	Plymouth, MA	1 GWh	Aug 2018	Dec 2025	Solar
Sunderland Solar PV	NSTAR Electric Company	Sunderland, MA	2 GWh	Aug 2018	Dec 2025	Solar
Kearsarge Uxbridge	Kearsarge Uxbridge LLC	Uxbridge, MA	3 GWh	Aug 2018	Dec 2025	Solar
GSPP Gilman, LLC	Green Street Power Partners	Lunenburg, VT	3 GWh	Aug 2018	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