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
Quarry	Nautilus Solar Solutions	North Berwick, ME	10 GWh	Nov 2022	Dec 2025	Solar
Iron Horse Solar I CSG	Iron Horse Solar 1, LLC	North Billerica, MA	4 GWh	Nov 2016	Dec 2025	Solar
Iron Horse Solar 4, LLC	Iron Horse Solar 4, LLC	North Billerica, MA	7 GWh	May 2017	Dec 2025	Solar
Brookfield Solar 2013 LLC	CVI CleanCapital Solar 6	North Brookfield, MA	3 GWh	Nov 2013	Dec 2025	Solar
North Brookfield	Mass Solar, LLC	North Brookfield, MA	4 GWh	May 2014	Dec 2025	Solar
BWC Lake Lashaway, LLC Hybrid	AES Distributed Energy	North Brookfield, MA	8 GWh	Apr 2021	Dec 2025	Solar : 99.4% Electricity used for energy storage : 0.6%
Ledeaux Solar, LLC CSG	38 Degrees North, LLC	North Brookfield, MA	1 GWh	Oct 2017	Dec 2025	Solar
Ryan Road Solar LLC Hybrid(CSG)	AES Distributed Energy	North Brookfield, MA	10 GWh	Nov 2021	Dec 2025	Solar
Lane Ave Solar LLC	AES Distributed Energy	North Brookfield, MA	2 GWh	Aug 2021	Dec 2025	Solar
JH Solar, LLC CSG	38 Degrees North, LLC	North Brookfield, MA	2 GWh	Oct 2017	Dec 2025	Solar
Becton Dickinson Ground & Roof Top	Madison Energy Investments LLC	North Canaan, CT	3 GWh	Feb 2018	Dec 2025	Solar
Sand Road	LSE Phoenix LLC	North Canaan, CT	3 GWh	Oct 2021	Dec 2025	Solar
Bunce	LSE Indus LLC	North Canaan, CT	3 GWh	Mar 2022	Dec 2025	Solar
Carver	Captona Carver LLC	North Carver, MA	2 GWh	Apr 2017	Dec 2025	Solar
Chester Power Partners	Altus Power America Management, LLC	North Chester, VT	2 GWh	Oct 2014	Dec 2025	Solar
Clarendon Solar Farm	Clarendon Solar Farm, LLC	North Clarendon, VT	3 GWh	Jun 2014	Dec 2025	Solar
Cold River Road Solar	Onsite Partners, LLC	North Clarendon, VT	3 GWh	Nov 2016	Dec 2025	Solar
Manheim New England	Cox Enterprises	North Dighton, MA	2 GWh	Nov 2012	Dec 2025	Solar
Stone Hill Solar CSG	MN8 Energy LLC	North Easton, MA	2 GWh	Jun 2014	Dec 2025	Solar
DG Tufts Science LLC CSG	DG Tufts Science, LLC	North Grafton, MA	1 GWh	Jan 2017	Dec 2025	Solar
DG Tufts Knoll LLC CSG	DG Tufts Knoll, LLC	North Grafton, MA	3 GWh	Jul 2017	Dec 2025	Solar
Medtronic - New Haven 2	Bloom Energy	North Haven, CT	17 GWh	Sep 2020	Dec 2025	Natural Gas
North Haven Solar One	North Haven Solar One, LLC	North Haven, CT	3 GWh	Feb 2024	Dec 2025	Solar
Medtronic - New Haven	Bloom Energy	North Haven, CT	18 GWh	Sep 2020	Dec 2025	Natural Gas
North Kingstown Solar LLC	North Kingstown Solar LLC	North Kingstown, RI	3 GWh	Aug 2022	Dec 2024	Solar
Dry Bridge Solar (Brown University)	MN8 Energy LLC	North Kingstown, RI	64 GWh	Oct 2023	May 2026	Solar
Toray Plastic America's CHP Plant	Toray Plastics America	North Kingstown, RI	157 GWh	Dec 2002	Dec 2025	Natural Gas
West Davisville Solar	Altus Power America Management, LLC	North Kingstown, RI	3 GWh	Nov 2013	Dec 2025	Solar
WED NK Green	WED NK Green LLC	North Kingstown, RI	3 GWh	Feb 2012	Dec 2025	Wind
North Providence	Captona N.P. LLC	North Providence, RI	3 GWh	Sep 2018	Dec 2025	Solar
Foster Solar	Foster Solar, LLC	North Scituate, RI	2 GWh	Jul 2016	Dec 2025	Solar
GDIM 2, LLC	GDIM 2, LLC	North Smithfield, RI	13 GWh	Nov 2021	Dec 2025	Solar
TPE King Solar Holdings1, LLC (CSG)	Nautilus Solar Solutions	North Smithfield, RI	18 GWh	Mar 2022	Dec 2025	Solar
Pomham Islander (CSG)	Nautilus Solar Solutions	North Smithfield, RI	1 GWh	Jun 2025	Dec 2025	Solar
GDIM 4, LLC	GDIM 4, LLC	North Smithfield, RI	14 GWh	Nov 2021	Dec 2025	Solar
GDIM 1, LLC	GDIM 1, LLC	North Smithfield, RI	15 GWh	Nov 2021	Dec 2025	Solar
GDIM 3, LLC	GDIM 3, LLC	North Smithfield, RI	15 GWh	Nov 2021	Dec 2025	Solar
Brookside	Terraform Arcadia	North Smithfield, RI	969 MWh	Oct 2015	Nov 2025	Solar
Blackstone/Tupperware	Blackstone Hydro Inc.	North Smithfield, RI	2 GWh	Dec 1980	May 2026	Water
North Smithfield Solar Power 1	Onsite Partners, LLC	North Smithfield, RI	2 GWh	Nov 2018	Dec 2025	Solar
North Stonington Solar Center, LLC	Adapture Renewables, Inc.	North Stonington, CT	32 GWh	Sep 2022	Dec 2025	Solar
SR North Stonington	SR North Stonington, LLC	North Stonington, CT	15 GWh	Feb 2024	Dec 2025	Solar
Fore River Generating Station	Calpine Fore River Energy Center, LLC	North Weymouth, MA	3 TWh	Jul 2003	May 2026	Natural Gas : 92.7% Distillate Fuel Oil : 7.3%
Smith College Central Heating Plant	The Trustees of Smith College	Northampton, MA	6 GWh	Sep 2008	Dec 2025	Natural Gas
Northampton Landfill Solar PV	Ameresco Glendale Road Solar PV LLC	Northampton, MA	2 GWh	Oct 2017	Dec 2025	Solar
CED Northampton Solar LLC Hybrid	RWE Clean Energy	Northampton, MA	6 GWh	Nov 2019	Dec 2025	Solar
Syncarpha Northampton Hybrid CSG	Syncarpha Northampton, LLC	Northampton, MA	5 GWh	Nov 2020	Dec 2025	Solar
Syncarpha Puddon II Hybrid CSG	Syncarpha Puddon II, LLC	Northbridge, MA	8 GWh	Feb 2021	Dec 2025	Solar
Syncarpha Puddon I Hybrid CSG	Syncarpha Puddon I, LLC	Northbridge, MA	8 GWh	Feb 2021	Dec 2025	Solar
NFM Solar Power LLC	FirstLight Power Resources, Inc. - MA	Northfield, MA	2 GWh	Feb 2012	Dec 2025	Solar
ER Bone Hill Solar, LLC	Altus Power America Management, LLC	Northfield, VT	2 GWh	Aug 2022	Dec 2025	Solar
Norton LLC	Greenbacker Renewable Energy Corporation	Norton, MA	1 GWh	Aug 2020	Dec 2025	Solar
Norton	Madison Energy Holdings LLC	Norton, MA	2 GWh	Feb 2023	Dec 2025	Solar
Norton Landfill Solar	Citizens Enterprises Corporation	Norton, MA	2 GWh	Dec 2016	Dec 2025	Solar
CMEEC - Rogers Rd Solar	Tesla Inc.	Norwich, CT	2 GWh	Jan 2017	Dec 2025	Solar
LNG 1 & 2	Connecticut Mun Elec Engy Coop	Norwich, CT	382 MWh	Mar 2010	Dec 2025	Distillate Fuel Oil
CMEEC - Norwich Stott St Solar Hybrid	Tesla Inc.	Norwich, CT	4 GWh	Nov 2016	Dec 2025	Solar
Conn Mun Electric Energy Coop	Tesla Inc.	Norwich, CT	1 GWh	Nov 2016	Dec 2025	Solar
Tenth Street	City of Norwich - (CT)	Norwich, CT	2 GWh	Apr 1967	Dec 2025	Water
Backus Microgrid Project	Connecticut Mun Elec Engy Coop	Norwich, CT	843 MWh	Jul 2014	May 2026	Distillate Fuel Oil
Oak Bluffs Diesel Generating Facility	Vineyard Reliability LLC	Oak Bluffs, MA	3 GWh	Dec 1968	Sep 2025	Distillate Fuel Oil
Messalonskee 3	Messalonskee Stream Hydro LLC	Oakland, ME	4 GWh	Dec 1917	Dec 2025	Water
Messalonskee 2 (Oakland)	Messalonskee Stream Hydro LLC	Oakland, ME	7 GWh	Dec 1923	Dec 2025	Water
Solar Mule, LLC	Solar Mule, LLC	Oakland, ME	2 GWh	Aug 2017	Dec 2024	Solar
North Bridgton	Nautilus Solar Solutions	Oakland, ME	8 GWh	Oct 2022	Dec 2025	Solar
Oakland	Nautilus Solar Solutions	Oakland, ME	9 GWh	Aug 2022	Dec 2025	Solar
Stillwater B	Brookfield Black Bear Hydro, LLC	Old Town, ME	9 GWh	Aug 2013	Dec 2025	Water
Rowe (CSG)	AES Distributed Energy	Olean, NY	8 GWh	Oct 2021	Dec 2025	Solar
OSG Solar 1 LLC	Navisun LLC	Orange, MA	3 GWh	Jun 2012	Dec 2025	Solar
Wilbur Woods Solar LLC	AES Distributed Energy	Orange, MA	8 GWh	Aug 2021	Dec 2025	Solar
W. Orange Rd Solar LLC	AES Distributed Energy	Orange, MA	8 GWh	Aug 2021	Dec 2025	Solar
Hunt Farm Solar	Altus Power America Management, LLC	Orange, MA	3 GWh	Aug 2013	Dec 2025	Solar
Orange PV	Terraform Arcadia	Orange, MA	3 GWh	Jun 2013	Dec 2025	Solar
Oneida County- DPW	Tesla Inc.	Oriskany, NY	1 GWh	Sep 2017	Dec 2025	Solar
Orono Hydro Station	Brookfield Black Bear Hydro, LLC	Orono, ME	6 GWh	Dec 2008	Dec 2025	Water
Orono B	Brookfield Black Bear Hydro, LLC	Orono, ME	17 GWh	Oct 2013	Dec 2025	Water
Onondaga County- Clearwater	Tesla Inc.	Oswego, NY	3 GWh	Jun 2017	Dec 2025	Solar
MA Military Reservation Wind Project	Air Force Civil Engineer Center	Otis ANG Base Bourne, MA	5 GWh	Nov 2009	Dec 2025	Wind
Nutting Ridge Solar, LLC	REA Investments, LLC	Otisfield, ME	7 GWh	May 2023	Dec 2025	Solar
CPV Towantic Energy Center	CPV Towantic, LLC	Oxford, CT	6 TWh	Apr 2018	May 2026	Natural Gas
Oxford PV - BD Solar Oxford LLC	BD Solar Oxford LLC	Oxford, ME	13 GWh	May 2021	Dec 2025	Solar
Joe Jenny	AMP MA Joe Jenny	Oxford, MA	2 GWh	Apr 2018	Dec 2024	Solar
Oxford Solar	Citizens Enterprises Corporation	Oxford, MA	5 GWh	Jan 2020	Dec 2025	Solar
Seaboard Oxford, LLC	Navisun LLC	Oxford, MA	3 GWh	Jul 2020	Dec 2025	Solar
Barrett PV	MN8 Energy LLC	Oxford, MA	17 GWh	Oct 2016	Dec 2025	Solar
Oxford	CVI CleanCapital Solar 6	Oxford, MA	3 GWh	Jun 2014	Dec 2025	Solar
Peterson Road Solar	Peterson Road Solar, LLC	Palmer, MA	4 GWh	Mar 2017	Dec 2025	Solar
State Street 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
Browne Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2025	Solar
WYM 1250 Palmer LLC	CVI CleanCapital Solar 6	Palmer, MA	1 GWh	Aug 2013	Dec 2025	Solar
Syncarpha Palmer, LLC	Syncarpha Palmer, LLC	Palmer, MA	7 GWh	Nov 2015	Dec 2025	Solar
Palmer	AES Distributed Energy	Palmer, MA	6 GWh	Sep 2019	Dec 2025	Solar
Palmer Landfill	Syncarpha Bondsville, LLC	Palmer, MA	6 GWh	Nov 2016	Dec 2025	Solar
Breckenridge Solar	Breckenridge Street Solar 1, LLC	Palmer, MA	7 GWh	Oct 2020	Dec 2024	Solar
Palmyra PV - BD Solar Palmyra LLC	BD Solar Palmyra LLC	Palmyra, ME	8 GWh	May 2022	Dec 2025	Solar
GMP Solar - Panton Hybrid	Green Mountain Power Corp	Panton, VT	8 GWh	Nov 2016	May 2026	Solar
Ryans Ranch	Nautilus Solar Solutions	Paris, ME	5 GWh	May 2022	Dec 2025	Solar
ME Novel Lighthouse - Penobscot CSG	Luminace Sunbeam Development Holdings, LLC	Patten, ME	4 GWh	Aug 2024	Dec 2025	Solar
MMWEC Simple Cycle Gas Turbine	Massachusetts Mun Wholes Electric Co	Peabody, MA	8 GWh	Jun 2024	Dec 2025	Distillate Fuel Oil : 69.0% Natural Gas : 31.0%

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