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%

Map of ISO New England

Register Now for Comprehensive Access

Subscribe now to access all power plant data, utility information, FERC EQR data, and more for ISO New England.

Create Your Account Today

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

Download Generation

Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Waters River	City of Peabody - (MA)	Peabody, MA	6 GWh	Nov 1971	Dec 2025	Natural Gas : 71.3% Distillate Fuel Oil : 28.7%
Onyx - Pembroke Landfill Solar	Onyx Asset Services Group	Pembroke, MA	3 GWh	Nov 2017	Dec 2025	Solar
Rolfe Canal Hydro	Briar-Hydro Associates	Penacook, NH	16 GWh	Nov 1987	Dec 2025	Water
Penacook Upper Falls Hydro	Briar-Hydro Associates	Penacook, NH	11 GWh	Nov 1986	Dec 2025	Water
Pepperell Hydro Power Plant	Eagle Creek Renewable Energy, LLC	Pepperell, MA	2 GWh	Dec 1919	May 2026	Water
Peru (MA)	Sunrise on West Main Rd. LLC	Peru, MA	5 GWh	Oct 2020	Dec 2024	Solar
Barton Acres Solar, LLC CSG	38 Degrees North, LLC	Phillipston, MA	2 GWh	Sep 2017	Dec 2025	Solar
Pittsfield Solar (N. Main St)	Maine DG Solar Pittsfield, LLC	Pittsfield, ME	8 GWh	Sep 2023	Dec 2025	Solar
Pittsfield Solar LLC	Pittsfiled Solar LLC	Pittsfield, ME	15 GWh	Nov 2017	Dec 2025	Solar
Oak Leaf Solar XVI Community Solar	Navisun LLC	Pittsfield, MA	10 MWh	Nov 2025	Dec 2025	Solar
Downing Parkway Solar	Downing Parkway Solar LLC	Pittsfield, MA	3 GWh	Jun 2015	Dec 2025	Solar
Oak Leaf Solar XVII Community Solar	Navisun LLC	Pittsfield, MA	47 MWh	Nov 2025	Dec 2025	Solar
Syncarpha Hancock III CSG	Syncarpha Hancock III, LLC	Pittsfield, MA	1 GWh	Oct 2017	Dec 2025	Solar
East Acres Solar NG, LLC	NuGen Capital Management	Pittsfield, MA	5 GWh	Mar 2017	Dec 2025	Solar
Pittsfield Generating LP	Pittsfield Generating Company, LP	Pittsfield, MA	136 GWh	Jun 1990	May 2026	Natural Gas : 96.9% Distillate Fuel Oil : 3.1%
Silver Lake Solar Photovoltaic Facility	Western Massachusetts Electric Company	Pittsfield, MA	2 GWh	Nov 2010	Dec 2025	Solar
Pittsfield 44 - M&W PV	NSTAR Electric Company	Pittsfield, MA	2 GWh	Jul 2018	Dec 2025	Solar
Pittsford	Green Mountain Power Corp	Pittsford, VT	8 GWh	Jan 1914	Dec 2025	Water
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%
Plainfield Solar 2	Ecos Energy LLC	Plainfield, CT	2 GWh	Mar 2020	Dec 2025	Solar
Plainfield Solar 1	Ecos Energy LLC	Plainfield, CT	2 GWh	Dec 2019	Dec 2025	Solar
Plainfield Community Solar LLC	Plainfield Solar LLC	Plainfield, MA	3 GWh	Jan 2019	Dec 2025	Solar
5 Berry	Madison Energy Investments LLC	Plainsville, MA	8 GWh	Aug 2023	Dec 2025	Solar
Wilmarth Solar	Wilmarth Lane Solar 1, LLC	Plainville, MA	8 GWh	Jan 2020	Dec 2024	Solar
Solten Plainville 6000, LLC	Altus Power America Management, LLC	Plainville, MA	7 GWh	Jul 2017	Dec 2025	Solar
Cedarville CSG	Altus Power America Management, LLC	Plymouth, MA	914 MWh	Jun 2017	Dec 2025	Solar
New Bedford (MA) Plymouth	BWC Origination 4, LLC	Plymouth, MA	7 GWh	Jun 2014	Dec 2025	Solar
Lepomis PV Energy LLC	CleanCapital Holdings	Plymouth, MA	8 GWh	May 2014	Dec 2025	Solar
Big George PV CSG	Altus Power America Management, LLC	Plymouth, MA	1 GWh	Aug 2018	Dec 2025	Solar
Camelot Wind LLC	Camelot Wind LLC	Plymouth, MA	2 GWh	Sep 2012	Dec 2024	Wind
Future Generation Wind	RWE Clean Energy	Plymouth, MA	12 GWh	Jul 2016	Nov 2025	Wind
Plymouth Solar	NSTAR Electric Company	Plymouth, MA	2 GWh	May 2018	Dec 2025	Solar
Plymouth Site 1	CleanCapital Holdings	Plympton, MA	7 GWh	Sep 2013	Dec 2025	Solar
Brook Street Solar 1 CSG	Brook Street Solar 1, LLC	Plympton, MA	3 GWh	Jul 2017	Dec 2025	Solar
Redbrook Community Solar 1	Redbrook Solar 1, LLC	Plympton, MA	1 GWh	Sep 2017	Dec 2025	Solar
Ring Road	Greenbacker Renewable Energy Corporation	Plympton, MA	2 GWh	May 2025	Dec 2025	Solar
Plympton Main Street Solar, LLC	REA Investments, LLC	Plympton, MA	7 GWh	Nov 2023	Dec 2025	Solar
Plympton Lake Street Solar	REA Investments, LLC	Plympton, MA	2 GWh	Nov 2022	Dec 2025	Solar
Upland	Greenbacker Renewable Energy Corporation	Plympton, MA	3 GWh	May 2025	Dec 2025	Solar
Lewiston Junction Road Solar	NextGrid Peppertree, LLC	Poland, ME	7 GWh	Dec 2021	Dec 2025	Solar
Woods Hill Solar	Woods Hill Solar, LLC	Pomfret, CT	22 GWh	Nov 2018	May 2026	Solar
Cape Gas Turbine	FPL Energy Cape LLC	Portland, ME	752 MWh	Dec 1969	Dec 2025	Distillate Fuel Oil
Regional Waste Systems	Ecomaine	Portland, ME	87 GWh	May 1988	May 2026	Non-biogenic Municipal Solid Waste : 54.6% Biogenic Municipal Solid Waste : 44.7% Natural Gas : 0.7%
Schiller	Granite Shore Power	Portsmouth, NH	888 MWh	Sep 1952	May 2026	Jet Fuel
Founders Homestead Farms Solar	AES Distributed Energy	Portsmouth, RI	6 GWh	Nov 2019	May 2026	Solar
WED Portsmouth One, LLC	Greenbacker Renewable Energy Corporation	Portsmouth, RI	5 GWh	Jul 2016	Dec 2025	Wind
McAllister Landfill	Solar Breakers LLC	Portsmouth, RI	2 GWh	Sep 2022	Dec 2025	Solar
Tank Farm 4	Solar Breakers LLC	Portsmouth, RI	13 GWh	Sep 2022	Dec 2025	Solar
Roger Williams - Melville at Portsmouth	Luminace Solar Rhode Island, LLC	Portsmouth, RI	5 GWh	Feb 2021	Dec 2025	Solar
Kearsarge West Shore Solar LLC	Kearsarge West Shore Solar LLC	Portsmouth, RI	9 GWh	Nov 2022	Dec 2025	Solar
SVEP Solar Project Company	CVI CleanCapital Solar 1 LLC	Pownal, VT	2 GWh	Nov 2012	Dec 2025	Solar
Mechanic Street (CSG)	Nautilus Solar Solutions	Presque Island, ME	4 GWh	Nov 2024	Dec 2025	Solar
Missile Street (CSG)	Nautilus Solar Solutions	Presque Island, ME	4 GWh	Nov 2024	Dec 2025	Solar
ME Fort Fairfield Solar Plant	ME Fort Fairfield LLC	Presque Isle, ME	4 GWh	Nov 2024	Dec 2025	Solar
Tunnel	FirstLight Power Resources Services LLC	Preston, CT	6 GWh	Dec 1918	Dec 2025	Water
Covanta Southeastern Connecticut Company	Covanta Southeastern Connecticut Company	Preston, CT	108 GWh	Nov 1991	May 2026	Non-biogenic Municipal Solid Waste : 53.9% Biogenic Municipal Solid Waste : 44.1% Distillate Fuel Oil : 2.1%
Princeton Wind Farm	Town of Princeton - (MA)	Princeton, MA	4 GWh	Dec 2009	Dec 2025	Wind
Proctor	Green Mountain Power Corp	Proctor, VT	28 GWh	Jul 1905	Dec 2025	Water
Rhode Island Hospital	Rhode Island Hospital	Providence, RI	53 GWh	Sep 1974	May 2026	Natural Gas : 87.3% Residual Fuel Oil : 12.7%
Manchester Street	Manchester Street, LLC.	Providence, RI	2 TWh	Aug 1995	May 2026	Natural Gas : 92.2% Distillate Fuel Oil : 7.8%
Little Bay	Altus Power America Management, LLC	Providence, RI	1 GWh	Feb 2014	Dec 2025	Solar
Thundermist Hydro	City of Woonsocket - (RI)	Providence, RI	3 GWh	May 1981	Jul 2025	Water
NBC Field's Point Wind Farm	Narragansett Bay Commission	Providence, RI	7 GWh	Sep 2012	May 2026	Wind
Green Providence Wind II, LLC	Green Providence Wind II, LLC	Providence, RI	5 GWh	Nov 2021	Dec 2025	Wind
Green Providence Wind I, LLC	Green Providence Wind I, LLC	Providence, RI	2 GWh	Nov 2021	Dec 2025	Wind
Boston Scientific Solar	RWE Clean Energy	Quincy, MA	1 GWh	Nov 2012	Dec 2025	Solar
Water Street Solar	AES Distributed Energy	Randolph, ME	7 GWh	Nov 2022	Dec 2025	Solar
Randolph	Altus Power America Management, LLC	Randolph, MA	6 GWh	Oct 2017	Dec 2025	Solar
Williams Rd	AES Distributed Energy	Ransomville, NY	6 GWh	Aug 2021	Dec 2025	Solar
GSPP Raynham TMLP, LLC CSG	Green Street Power Partners	Raynham, MA	4 GWh	Jan 2019	Dec 2025	Solar
BWC Swan Pond River CSG	BWC Swan Pond River, LLC	Rehoboth, MA	3 GWh	Nov 2015	Dec 2025	Solar
Rehoboth Solar	Citizens Enterprises Corporation	Rehoboth, MA	3 GWh	Nov 2013	Dec 2025	Solar
Richmond Hill	Greenbacker Renewable Energy Corporation	Richmond, ME	3 GWh	Nov 2023	Dec 2025	Solar
GD Richmond Beaver River I LLC	GD Richmond Beaver River I LLC	Richmond, RI	6 GWh	Mar 2025	Dec 2025	Solar
GD Richmond Buttonwoods I, LLC	CleanCapital Holdings	Richmond, RI	2 GWh	Nov 2019	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
GMP Solar - Richmond	Green Mountain Power Corp	Richmond, VT	3 GWh	Sep 2016	May 2026	Solar
Quittacas Pond Solar	RWE Clean Energy	Rochester, MA	5 GWh	Nov 2013	Dec 2025	Solar
Old Middleboro Road Solar	Agilitas Energy, Inc.	Rochester, MA	8 GWh	Dec 2022	Dec 2025	Solar
Rochester MA 2	Rochester MA 2 LLC	Rochester, MA	1 GWh	Nov 2018	Dec 2025	Solar
Rounseville Solar	Rounseville Solar 1, LLC	Rochester, MA	4 GWh	Jan 2020	Dec 2025	Solar
Turnkey Landfill Gas Recovery	WM Renewable Energy LLC	Rochester, NH	39 GWh	Jan 1992	Dec 2025	Landfill Gas
Saratoga Solar IV, LLC	Green Street Power Partners	Rock City Falls, NY	5 GWh	Sep 2023	Dec 2025	Solar
Rockland Solar CSG	MN8 Energy LLC	Rockland, MA	2 GWh	Nov 2013	Dec 2025	Solar
BWC Maces Pond LLC	Navisun LLC	Rockport, ME	4 GWh	Nov 2021	Dec 2025	Solar
Samoset Solar	Samoset Solar, LLC	Rockport, ME	4 GWh	Jun 2023	Dec 2025	Solar
Brassua Hydroelectric Project	Brassua Hydroelectric LP	Rockwood, ME	13 GWh	Aug 1989	Aug 2025	Water
Town of Rocky Hill PV CSG	Tesla Inc.	Rocky Hill, CT	5 GWh	Feb 2018	Dec 2025	Solar
Rollinsford	Green Mountain Power Corp	Rollinsford, NH	3 GWh	Sep 1986	Dec 2025	Water
700 Binnewater	Madison Energy Investments LLC	Rosendale, NY	2 GWh	Aug 2022	Dec 2025	Solar
Sherman	Great River Hydro, LLC	Rowe, MA	28 GWh	Nov 1926	Dec 2025	Water
Record Hill Wind	Record Hill Wind LLC	Roxbury, ME	110 GWh	Dec 2011	Dec 2025	Wind
RoxWind	RoxWind LLC	Roxbury, ME	44 GWh	Oct 2021	Dec 2025	Wind
Mainely Solar (Wyman Hill Solar LLC)	Wyman Hill Solar, LLC	Rumford, ME	6 GWh	Nov 2022	Dec 2025	Solar
Rumford Power LLC	Rumford Power	Rumford, ME	793 GWh	Jun 2000	Dec 2025	Natural Gas
Rumford Falls Hydro Facility	Brookfield Power New England	Rumford, ME	212 GWh	Dec 1917	Dec 2025	Water
Rumford Cogeneration	ND Paper, Inc.	Rumford, ME	400 GWh	Dec 1989	May 2026	Black Liquor : 55.5% Tire-derived Fuels : 20.6% Wood/Wood Waste Solids : 16.0% Bituminous Coal : 6.1% Residual Fuel Oil : 1.2% Sludge Waste : 0.7%
Texon Hydroelectric Project	Hitchcock Hydro, LLC	Russell, MA	4 GWh	Dec 1981	Dec 2025	Water
Holiday Hill Community Wind	Greenbacker Renewable Energy Corporation	Russell, MA	12 GWh	Nov 2019	Dec 2025	Wind

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