ISO New England

Balancing Authority Summary Information

ISO New England is ranked #15 out of 65 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	Nov 2024
Annual Generation	103.1 TWh
Power Plants	1,487
Utilities	782
Ranked #15 out of 65 in terms of net annual generation
Ranked #11 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 57.5% Nuclear \| 25.1% Water \| 7.5% Other Fuel \| 4.5% Wind \| 3.3% Solar \| 1.2% Coal \| 0.1%

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Daily Net Generation for ISO New England for the past 3 Years

Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Plainfield Renewable Energy LLC	Plainfield Renewable Energy, LLC	Plainfield, CT	234 GWh	Nov 2013	Dec 2023	Wood/Wood Waste Solids : 99.6%
Plainfield Solar 2	Ecos Energy LLC	Plainfield, CT	1 GWh	Mar 2020	Dec 2023	Solar
Plainfield Solar 1	Ecos Energy LLC	Plainfield, CT	1 GWh	Dec 2019	Dec 2023	Solar
Pittsford	Green Mountain Power Corp	Pittsford, VT	10 GWh	Jan 1914	Dec 2023	Water
Pittsfield 44 - M&W PV	NSTAR Electric Company	Pittsfield, MA	2 GWh	Jul 2018	Dec 2023	Solar
Syncarpha Hancock III CSG	Syncarpha Hancock III, LLC	Pittsfield, MA	2 GWh	Oct 2017	Dec 2023	Solar
East Acres Solar NG, LLC	NuGen Capital Management	Pittsfield, MA	5 GWh	Mar 2017	Dec 2023	Solar
Silver Lake Solar Photovoltaic Facility	Western Massachusetts Electric Company	Pittsfield, MA	1 GWh	Nov 2010	Dec 2023	Solar
Waste Water Treatment Plant	City of Pittsfield	Pittsfield, MA	763 MWh	Dec 2011	Dec 2022	Solar
Pittsfield Generating LP	Pittsfield Generating Company, LP	Pittsfield, MA	34 GWh	Jun 1990	Aug 2024	Natural Gas : 99.3% Distillate Fuel Oil : 0.7%
Pittsfield Solar (N. Main St)	Maine DG Solar Pittsfield, LLC	Pittsfield, ME	2 GWh	Sep 2023	Dec 2023	Solar
Pittsfield Solar LLC	Pittsfiled Solar LLC	Pittsfield, ME	16 GWh	Nov 2017	Dec 2023	Solar
Barton Acres Solar, LLC CSG	38 Degrees North, LLC	Phillipston, MA	2 GWh	Sep 2017	Dec 2023	Solar
Pepperell Hydro Power Plant	Eagle Creek Renewable Energy, LLC	Pepperell, MA	8 GWh	Dec 1919	Sep 2024	Water
Rolfe Canal Hydro	Briar-Hydro Associates	Penacook, NH	28 GWh	Nov 1987	Dec 2023	Water
Penacook Upper Falls Hydro	Briar-Hydro Associates	Penacook, NH	17 GWh	Nov 1986	Dec 2023	Water
Onyx - Pembroke Landfill Solar	Onyx Asset Services Group	Pembroke, MA	4 GWh	Nov 2017	Dec 2023	Solar
Rousselot Inc	Rousselot Inc	Peabody, MA	15 GWh	Apr 1947	Nov 2023	Natural Gas
Waters River	City of Peabody - (MA)	Peabody, MA	4 GWh	Nov 1971	Dec 2023	Natural Gas : 76.6% Distillate Fuel Oil : 23.4%
GMP Solar - Panton Hybrid	Green Mountain Power Corp	Panton, VT	8 GWh	Nov 2016	Sep 2024	Solar : 96.8% Electricity used for energy storage : 3.2%
Palmyra PV - BD Solar Palmyra LLC	BD Solar Palmyra LLC	Palmyra, ME	8 GWh	May 2022	Dec 2023	Solar
Breckenridge Solar	Breckenridge Street Solar 1, LLC	Palmer, MA	7 GWh	Oct 2020	Dec 2023	Solar
Palmer	AES Distributed Energy	Palmer, MA	6 GWh	Sep 2019	Dec 2023	Solar
Palmer Landfill	Syncarpha Bondsville, LLC	Palmer, MA	4 GWh	Nov 2016	Dec 2023	Solar
State Street Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2023	Solar
Indian Hill Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2023	Solar
Browne Solar LLC	CVI CleanCapital Solar 1 LLC	Palmer, MA	1 GWh	Mar 2014	Dec 2023	Solar
Peterson Road Solar	Peterson Road Solar, LLC	Palmer, MA	4 GWh	Mar 2017	Dec 2023	Solar
Palmer Solar LLC	Palmer Solar LLC	Palmer, MA	3 GWh	Nov 2013	Dec 2022	Solar
Syncarpha Palmer, LLC	Syncarpha Palmer, LLC	Palmer, MA	8 GWh	Nov 2015	Dec 2023	Solar
WYM 1250 Palmer LLC	CVI CleanCapital Solar 6	Palmer, MA	755 MWh	Aug 2013	Dec 2023	Solar
Barrett PV	MN8 Energy LLC	Oxford, MA	17 GWh	Oct 2016	Dec 2023	Solar
Oxford	CVI CleanCapital Solar 6	Oxford, MA	4 GWh	Jun 2014	Dec 2023	Solar
Joe Jenny	AMP MA Joe Jenny	Oxford, MA	2 GWh	Apr 2018	Dec 2023	Solar
Seaboard Oxford, LLC	Navisun LLC	Oxford, MA	3 GWh	Jul 2020	Dec 2023	Solar
Oxford Solar	Citizens Enterprises Corporation	Oxford, MA	6 GWh	Jan 2020	Dec 2023	Solar
Oxford PV - BD Solar Oxford LLC	BD Solar Oxford LLC	Oxford, ME	11 GWh	May 2021	Dec 2023	Solar
CPV Towantic Energy Center	CPV Towantic, LLC	Oxford, CT	5 TWh	Apr 2018	Sep 2024	Natural Gas
Town of Otis Wind Energy Project	Town of Otis	Otis, MA	3 GWh	Feb 2018	Dec 2023	Wind
MA Military Reservation Wind Project	Air Force Civil Engineer Center	Otis ANG Base Bourne, MA	10 GWh	Nov 2009	Dec 2023	Wind
Onondaga County- Clearwater	Tesla Inc.	Oswego, NY	3 GWh	Jun 2017	Dec 2023	Solar
Penobscot Energy Recovery	ESOCO Orrington LLC	Orrington, ME	31 GWh	Oct 1987	May 2023	Non-biogenic Municipal Solid Waste : 54.1% Biogenic Municipal Solid Waste : 44.3% Distillate Fuel Oil : 1.6%
Orono B	Brookfield Black Bear Hydro, LLC	Orono, ME	26 GWh	Oct 2013	Dec 2023	Water
Orono Hydro Station	Brookfield Black Bear Hydro, LLC	Orono, ME	12 GWh	Dec 2008	Dec 2023	Water
Oneida County- DPW	Tesla Inc.	Oriskany, NY	2 GWh	Sep 2017	Dec 2023	Solar
Orange PV	Terraform Arcadia	Orange, MA	2 GWh	Jun 2013	Dec 2023	Solar
Hunt Farm Solar	Altus Power America Management, LLC	Orange, MA	4 GWh	Aug 2013	Dec 2023	Solar
W. Orange Rd Solar LLC	AES Distributed Energy	Orange, MA	7 GWh	Aug 2021	Dec 2023	Solar
Wilbur Woods Solar LLC	AES Distributed Energy	Orange, MA	8 GWh	Aug 2021	Dec 2023	Solar
OSG Solar 1 LLC	Navisun LLC	Orange, MA	3 GWh	Jun 2012	Dec 2023	Solar
Rowe (CSG)	AES Distributed Energy	Olean, NY	8 GWh	Oct 2021	Dec 2023	Solar
Stillwater B	Brookfield Black Bear Hydro, LLC	Old Town, ME	13 GWh	Aug 2013	Dec 2023	Water
Red Shield Envir Old Town Facility	ND Paper, Inc.	Old Town, ME	66 GWh	Jun 1965	Apr 2023	Wood/Wood Waste Solids : 63.4% Black Liquor : 22.1% Natural Gas : 11.8% Residual Fuel Oil : 2.7%
Solar Mule, LLC	Solar Mule, LLC	Oakland, ME	2 GWh	Aug 2017	Dec 2023	Solar
Messalonskee 3	Messalonskee Stream Hydro LLC	Oakland, ME	7 GWh	Dec 1917	Dec 2023	Water
Messalonskee 2 (Oakland)	Messalonskee Stream Hydro LLC	Oakland, ME	13 GWh	Dec 1923	Dec 2023	Water
North Bridgton	Nautilus Solar Solutions	Oakland, ME	8 GWh	Oct 2022	Dec 2023	Solar
Oakland	Nautilus Solar Solutions	Oakland, ME	8 GWh	Aug 2022	Dec 2023	Solar
Oak Bluffs Diesel Generating Facility	Vineyard Reliability LLC	Oak Bluffs, MA	1 GWh	Dec 1968	Dec 2023	Distillate Fuel Oil
Conn Mun Electric Energy Coop	Tesla Inc.	Norwich, CT	1 GWh	Nov 2016	Dec 2023	Solar
CMEEC - Rogers Rd Solar	Tesla Inc.	Norwich, CT	2 GWh	Jan 2017	Dec 2023	Solar
LNG 1 & 2	Connecticut Mun Elec Engy Coop	Norwich, CT	573 MWh	Mar 2010	Dec 2023	Distillate Fuel Oil
Tenth Street	City of Norwich - (CT)	Norwich, CT	4 GWh	Apr 1967	Dec 2023	Water
Norwich WWTP	City of Norwich - (CT)	Norwich, CT	1 MWh	Apr 2006	Mar 2024	Distillate Fuel Oil
CMEEC - Norwich Stott St Solar Hybrid	Tesla Inc.	Norwich, CT	2 GWh	Nov 2016	Dec 2023	Solar
North Main Street	City of Norwich - (CT)	Norwich, CT	138 MWh	Jul 1972	May 2023	Distillate Fuel Oil
Backus Microgrid Project	Connecticut Mun Elec Engy Coop	Norwich, CT	937 MWh	Jul 2014	Sep 2024	Distillate Fuel Oil
Norden 1-3	Third Taxing District of Norwalk	Norwalk, CT	42 MWh	May 2004	Dec 2022	Distillate Fuel Oil
Norwalk Hospital Plant	Norwalk Hospital	Norwalk, CT	4 GWh	Apr 1992	Dec 2022	Natural Gas
Norton Landfill Solar	Citizens Enterprises Corporation	Norton, MA	2 GWh	Dec 2016	Dec 2023	Solar
Norton	Madison Energy Holdings LLC	Norton, MA	707 MWh	Feb 2023	Dec 2023	Solar
Norton LLC	Greenbacker Renewable Energy Corporation	Norton, MA	5 GWh	Aug 2020	Dec 2023	Solar
ER Bone Hill Solar, LLC	Greenbacker Renewable Energy Corporation	Northfield, VT	2 GWh	Aug 2022	Dec 2023	Solar
NFM Solar Power LLC	FirstLight Power Resources, Inc. - MA	Northfield, MA	2 GWh	Feb 2012	Dec 2023	Solar
Syncarpha Puddon I Hybrid CSG	Syncarpha Puddon I, LLC	Northbridge, MA	9 GWh	Feb 2021	Dec 2022	Solar
Syncarpha Puddon II Hybrid CSG	Syncarpha Puddon II, LLC	Northbridge, MA	9 GWh	Feb 2021	Dec 2022	Solar
Northampton Landfill Solar PV	Ameresco Glendale Road Solar PV LLC	Northampton, MA	4 GWh	Oct 2017	Dec 2023	Solar
Smith College Central Heating Plant	The Trustees of Smith College	Northampton, MA	15 GWh	Sep 2008	Dec 2023	Natural Gas
Syncarpha Northampton Hybrid CSG	Syncarpha Northampton, LLC	Northampton, MA	5 GWh	Nov 2020	Dec 2023	Solar
CED Northampton Solar LLC Hybrid	Consolidated Edison Development Inc.	Northampton, MA	6 GWh	Nov 2019	Dec 2023	Solar
Fore River Generating Station	Calpine Fore River Energy Center, LLC	North Weymouth, MA	3 TWh	Jul 2003	Sep 2024	Natural Gas : 99.8%
North Stonington Solar Center, LLC	Adapture Renewables, Inc.	North Stonington, CT	31 GWh	Sep 2022	Dec 2023	Solar
Brookside	Terraform Arcadia	North Smithfield, RI	2 GWh	Oct 2015	Dec 2023	Solar
North Smithfield Solar Power 1	AEP Onsite Partners, LLC	North Smithfield, RI	919 MWh	Nov 2018	Dec 2023	Solar
Blackstone/Tupperware	Blackstone Hydro Inc.	North Smithfield, RI	4 GWh	Dec 1980	Sep 2024	Water
GDIM 3, LLC	GDIM 3, LLC	North Smithfield, RI	14 GWh	Nov 2021	Dec 2023	Solar
GDIM 4, LLC	GDIM 4, LLC	North Smithfield, RI	14 GWh	Nov 2021	Dec 2023	Solar
GDIM 2, LLC	GDIM 2, LLC	North Smithfield, RI	13 GWh	Nov 2021	Dec 2023	Solar
TPE King Solar Holdings1, LLC (CSG)	Nautilus Solar Solutions	North Smithfield, RI	19 GWh	Mar 2022	Dec 2023	Solar
GDIM 1, LLC	GDIM 1, LLC	North Smithfield, RI	13 GWh	Nov 2021	Dec 2023	Solar
Foster Solar	Foster Solar, LLC	North Scituate, RI	2 GWh	Jul 2016	Dec 2023	Solar
North Providence	Captona N.P. LLC	North Providence, RI	3 GWh	Sep 2018	Dec 2023	Solar
North Kingstown Solar LLC	North Kingstown Solar LLC	North Kingstown, RI	3 GWh	Aug 2022	Dec 2023	Solar
WED NK Green	WED NK Green LLC	North Kingstown, RI	2 GWh	Feb 2012	Dec 2023	Wind
Toray Plastic America's CHP Plant	Toray Plastics America	North Kingstown, RI	157 GWh	Dec 2002	Dec 2023	Natural Gas
Dry Bridge Solar (Brown University)	MN8 Energy LLC	North Kingstown, RI	55 GWh	Oct 2023	Sep 2024	Solar
West Davisville Solar	Altus Power America Management, LLC	North Kingstown, RI	3 GWh	Nov 2013	Dec 2023	Solar
Medtronic - New Haven 2	Bloom Energy	North Haven, CT	17 GWh	Sep 2020	Dec 2023	Natural Gas
Medtronic - New Haven	Bloom Energy	North Haven, CT	14 GWh	Sep 2020	Dec 2023	Natural Gas
DG Tufts Knoll LLC CSG	DG Tufts Knoll, LLC	North Grafton, MA	3 GWh	Jul 2017	Dec 2023	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	903.4 GWh	4
#25	Dominion Energy South Carolina, Inc.	26.0 TWh	85
#13	Duke Energy Carolinas	110.9 TWh	556
#17	Duke Energy Progress East	63.2 TWh	554
#51	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	33.1 TWh	20
#12	New York Independent System Operator	129.8 TWh	1,100
#1	PJM Interconnection, LLC	843.4 TWh	2,305
#31	South Carolina Public Service Authority	17.9 TWh	33
#60	Southeastern Power Administration	1.6 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	192.0 TWh	1,943
#9	Tennessee Valley Authority	157.6 TWh	170
#10	Florida Power & Light Co.	147.6 TWh	159
#12	New York Independent System Operator	129.8 TWh	1,100
#13	Duke Energy Carolinas	110.9 TWh	556
#15	ISO New England	103.1 TWh	1,487
#16	Bonneville Power Administration	80.0 TWh	158
#17	Duke Energy Progress East	63.2 TWh	554
#18	Salt River Project Agricultural Improvement and Power District	58.9 TWh	45
#19	PacifiCorp East	52.7 TWh	204