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	102.8 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 \| 57.6% Nuclear \| 25% Water \| 7.7% Other Fuel \| 4.6% Wind \| 3.3% Solar \| 1.2% 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

Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Winslow PV - BD Solar 2 LLC	BD Solar 2 LLC	Winslow, ME	11 GWh	Jun 2022	Dec 2023	Solar
Oxford PV - BD Solar Oxford LLC	BD Solar Oxford LLC	Oxford, ME	11 GWh	May 2021	Dec 2023	Solar
MMWAC Resource Recovery Facility	Maine Waste to Energy	Auburn, ME	11 GWh	May 1992	Aug 2024	Non-biogenic Municipal Solid Waste : 54.3% Biogenic Municipal Solid Waste : 44.4% Natural Gas : 1.2%
Foxwoods CoGen	Foxwoods Resort Casino	Mashantucket, CT	11 GWh	May 2010	Dec 2023	Natural Gas
Indian Orchard	Central Rivers Power MA, LLC	Indian Orchard, MA	11 GWh	Dec 1927	Dec 2023	Water
Hopkins Hill CSG	Nautilus Solar Solutions	West Greenwich, RI	11 GWh	Oct 2020	Dec 2023	Solar
Cobble Mountain	City of Holyoke Gas and Electric Dept.	Granville, MA	11 GWh	Dec 1929	Dec 2023	Water
Dunstable Solar 1, LLC	AES Distributed Energy	Dunstable, MA	10 GWh	Mar 2021	Dec 2023	Solar : 98.9% Electricity used for energy storage : 1.1%
UB Fuel Cell	UB Fuel Cell	Bridgeport, CT	10 GWh	Mar 2015	Dec 2023	Natural Gas
Wesleyan University Cogen 1	Wesleyan University	Middletown, CT	10 GWh	Jan 2009	Dec 2023	Natural Gas
Pittsford	Green Mountain Power Corp	Pittsford, VT	10 GWh	Jan 1914	Dec 2023	Water
RoxWind	RoxWind LLC	Roxbury, ME	10 GWh	Oct 2021	Dec 2023	Wind
Beaver Ridge Wind	CPV Beaver Ridge Wind LLC	Freedom, ME	10 GWh	Oct 2008	Dec 2023	Wind
CCSU Fuel Cell Project	New Britain Renewable Energy, LLC	New Britain, CT	10 GWh	Mar 2012	Dec 2023	Natural Gas
Ridgewood Providence Power	Rhode Island LFG Genco	Johnston, RI	10 GWh	Jul 2005	Dec 2023	Landfill Gas
International Paper Livermore Hydro	Eagle Creek Renewable Energy, LLC	Livermore Falls, ME	10 GWh	Dec 1909	Dec 2023	Water
Quinebaug Lower Project	Quinebaug Associates LLC	Brooklyn, CT	10 GWh	Mar 1990	Dec 2023	Water
Dartmouth College Heating Plant	Dartmouth College	Hanover, NH	10 GWh	Dec 1969	Aug 2024	Residual Fuel Oil
Redbrook Community Solar 1	Redbrook Solar 1, LLC	Plympton, MA	10 GWh	Sep 2017	Dec 2023	Solar
Dwight	Central Rivers Power MA, LLC	Chicopee, MA	10 GWh	Dec 1919	Dec 2023	Water
White Rock Road LLC	White Rock Road LLC	Westerly, RI	10 GWh	Nov 2022	Dec 2023	Solar
Stevens Mills Dam	Eagle Creek Renewable Energy, LLC	Franklin, NH	10 GWh	May 1982	Dec 2023	Water
160 Tihonet Rd Hybrid(CSG)	160TIH WHAM8 Solar, LLC	Wareham, MA	10 GWh	Nov 2021	Dec 2023	Solar
Old Middleboro Road Solar	Agilitas Energy, Inc.	Rochester, MA	10 GWh	Dec 2022	Dec 2023	Solar
MA Military Reservation Wind Project	Air Force Civil Engineer Center	Otis ANG Base Bourne, MA	10 GWh	Nov 2009	Dec 2023	Wind
Wind Colebrook South	Wind Colebrook South	Colebrook, CT	10 GWh	Oct 2015	Aug 2024	Wind
Scotland Dam	FirstLight Power Resources Services LLC	Windham, CT	10 GWh	Dec 1936	Dec 2023	Water
Holiday Hill Community Wind	Greenbacker Renewable Energy Corporation	Russell, MA	10 GWh	Nov 2019	Dec 2023	Wind
TPE Hopkins Solar Holdings1, LLC	Nautilus Solar Solutions	West Greenwhich, RI	10 GWh	Oct 2020	Dec 2022	Solar
Harmony Solar	Maine DG Solar Harmony, LLC	Harmony, ME	9 GWh	Jul 2022	Dec 2023	Solar
North Gorham	Brookfield White Pine Hydro LLC	Gorham, ME	9 GWh	Dec 1924	Dec 2023	Water
Derby Hydro	McCallum Enterprises I LP	Shelton, CT	9 GWh	Dec 1988	Dec 2023	Water
Syncarpha Puddon II Hybrid CSG	Syncarpha Puddon II, LLC	Northbridge, MA	9 GWh	Feb 2021	Dec 2022	Solar
Rhode Island Hospital	Rhode Island Hospital	Providence, RI	9 GWh	Sep 1974	Aug 2024	Natural Gas : 89.3% Residual Fuel Oil : 10.7%
Blodgett Solar CSG	Blodgett Street Solar 1, LLC	Tyngsboro, MA	9 GWh	Jul 2021	Dec 2023	Solar
Searsburg Wind Turbine	Green Mountain Power Corp	Searsburg, VT	9 GWh	May 1997	Aug 2024	Wind
Marshfield 6	Green Mountain Power Corp	Marshfield, VT	9 GWh	Dec 1926	Dec 2023	Water
Baldwin	Maine DG Solar Baldwin, LLC	West Baldwin, ME	9 GWh	Feb 2022	Dec 2023	Solar
Trinity College Fuel Cell	AEP Onsite Partners, LLC	Hartford, CT	9 GWh	Jul 2018	Dec 2023	Natural Gas
Syncarpha Puddon I Hybrid CSG	Syncarpha Puddon I, LLC	Northbridge, MA	9 GWh	Feb 2021	Dec 2022	Solar
Dynamic Madison	MN8 Energy LLC	Madison, ME	9 GWh	Jul 2022	Dec 2023	Solar
East Windsor Solar One	DG Connecticut III, LLC	East Windsor, CT	9 GWh	Nov 2021	Dec 2023	Solar
Worcester Landfill	City of Worcester DPW	Worcester, MA	9 GWh	Apr 2017	Dec 2023	Solar
Southington Solar One	DG Connecticut III, LLC	Southington, CT	9 GWh	Jan 2022	Dec 2023	Solar
GMP Solar/Storage-Ferrisburgh Hybrid	Green Mountain Power Corp	Ferrisburgh, VT	9 GWh	Aug 2019	Aug 2024	Solar : 90.7% Electricity used for energy storage : 9.3%
Randall Solar Project Hybrid	AES Distributed Energy	Berlin, MA	9 GWh	Jun 2021	Dec 2023	Solar
Syncarpha Northbridge I Hybrid(CSG)	Syncarpha Northbridge I, LLC	Whitinsville, MA	9 GWh	Nov 2021	Dec 2023	Solar
Bridgewater Complex Co-Generation Plant	Massachusetts Department of Correction	Bridgewater, MA	9 GWh	Oct 2015	Dec 2023	Natural Gas
Clark University	Clark University	Worcester, MA	9 GWh	Dec 2012	Dec 2023	Natural Gas
Dartmouth	Mass Solar, LLC	Dartmouth, MA	9 GWh	Mar 2014	Dec 2023	Solar
West Street Solar 1 LLC	AES Distributed Energy	Gardner, MA	8 GWh	Nov 2019	Dec 2023	Solar
Adirondack A+B Community Solar Garden	BWC Connecticut River LLC	Westport, MA	8 GWh	Nov 2018	Dec 2023	Solar
Woodland Avenue Solar 1	Woodland Avenue Solar 1, LLC	Seekonk, MA	8 GWh	Jul 2020	Dec 2023	Solar
Blacksmith Road Solar 1	Blacksmith Road Solar 1, LLC	Falmouth, MA	8 GWh	Nov 2021	Dec 2023	Solar
LR Wheatfield Solar 1	LR Wheatfield Solar 1, LLC	Wheatfield, NY	8 GWh	Sep 2020	Dec 2023	Solar
Wells (ME)	Nautilus Solar Solutions	Wells, ME	8 GWh	Jun 2022	Dec 2023	Solar
BWC Lake Lashaway, LLC Hybrid	AES Distributed Energy	North Brookfield, MA	8 GWh	Apr 2021	Dec 2023	Solar
Syncarpha Northbridge II Hybrid CSG	Syncarpha Northbridge II, LLC	Whitinsville, MA	8 GWh	Mar 2021	Dec 2023	Solar
Redman South Community Solar	AES Distributed Energy	Brockport, NY	8 GWh	Jan 2022	Dec 2023	Solar
West Haydenville PJ Community Solar	AES Distributed Energy	Williamsburg, MA	8 GWh	Aug 2022	Dec 2023	Solar
Clark Road Solar 1, LLC	Clark Road Solar 1, LLC	Gardner, MA	8 GWh	Nov 2020	Dec 2023	Solar
GMP Solar/Storage-Milton Hybrid	Green Mountain Power Corp	Milton, VT	8 GWh	Aug 2019	Aug 2024	Solar : 91.0% Electricity used for energy storage : 9.0%
Wilmarth Solar	Wilmarth Lane Solar 1, LLC	Plainville, MA	8 GWh	Jan 2020	Dec 2023	Solar
Milton Hydro	SFR Hydro Cor	Milton, NH	8 GWh	Dec 1913	Dec 2023	Water
Kilvert	Captona Kilvert Street Warwick LLC	Warwick, RI	8 GWh	Nov 2018	Dec 2023	Solar
Southwick Solar PV	NSTAR Electric Company	Southwick, MA	8 GWh	Dec 2018	Aug 2024	Solar
Main Rd Community Solar	AES Distributed Energy	Newstead, NY	8 GWh	Jun 2022	Dec 2023	Solar
Glen	Green Mountain Power Corp	Rutland, VT	8 GWh	Jul 1920	Dec 2023	Water
Ryan Road Solar LLC Hybrid(CSG)	AES Distributed Energy	North Brookfield, MA	8 GWh	Nov 2021	Dec 2023	Solar
North Bridgton	Nautilus Solar Solutions	Oakland, ME	8 GWh	Oct 2022	Dec 2023	Solar
Sugar Hill Solar 1	Sugar Hill Solar 1, LLC	Clifton Park, NY	8 GWh	Nov 2020	Dec 2023	Solar
Fairfield PV - BD Solar Fairfield LLC	BD Solar Fairfield LLC	Fairfield, ME	8 GWh	May 2021	Dec 2023	Solar
Monmouth	Maine DG Solar Monmouth, LLC	Monmouth, ME	8 GWh	Feb 2022	Dec 2023	Solar
Derby Fuel Cell	Derby Fuel Cell LLC	Derby, CT	8 GWh	-	Dec 2023	Natural Gas
Newfound Hydroelectric	Eagle Creek Renewable Energy, LLC	Bristol, NH	8 GWh	Nov 1983	Dec 2023	Water
MM Taunton Energy	MM Taunton Energy LLC	Taunton, MA	8 GWh	Aug 1997	Dec 2023	Landfill Gas
Syncarpha Blandford Hybrid CSG	Syncarpha Blandford, LLC	Blandford, MA	8 GWh	Nov 2019	Dec 2023	Solar
Connecticut College	Bloom Energy	New London, CT	8 GWh	Aug 2019	Dec 2023	Natural Gas
Rowe (CSG)	AES Distributed Energy	Olean, NY	8 GWh	Oct 2021	Dec 2023	Solar
Barker Lower	KEI (Maine) Power Management (III) LLC	Auburn, ME	8 GWh	Mar 1986	Dec 2023	Water
Wilbur Woods Solar LLC	AES Distributed Energy	Orange, MA	8 GWh	Aug 2021	Dec 2023	Solar
Elm Street	ISM Solar Dighton 3, LLC	Dighton, MA	8 GWh	Nov 2020	Dec 2023	Solar
Oakland	Nautilus Solar Solutions	Oakland, ME	8 GWh	Aug 2022	Dec 2023	Solar
GMP Solar - Panton Hybrid	Green Mountain Power Corp	Panton, VT	8 GWh	Nov 2016	Aug 2024	Solar : 97.0% Electricity used for energy storage : 3.0%
Happy Hollow CSG Hybrid	REA Investments, LLC	Winchendon, MA	8 GWh	Sep 2019	Dec 2023	Solar
RT405 Westerlo Solar 2	RT405 Westerlo Solar 2, LLC	Albany, NY	8 GWh	Feb 2020	Dec 2023	Solar
Somers Solar Center, LLC	Onward Energy	Somers, CT	8 GWh	Nov 2013	Dec 2023	Solar
299 Farm to Market Rd Hybrid(CSG)	299F2M WHAM8 Solar, LLC	Wareham, MA	8 GWh	Nov 2021	Dec 2023	Solar
Dusenberry	AES Distributed Energy	Troy, NY	8 GWh	Nov 2021	Dec 2023	Solar
Syncarpha Millbury Hybrid (CSG)	Syncarpha Millbury, LLC	Millbury, MA	8 GWh	Sep 2022	Dec 2023	Solar
Fisher Road Solar	Fisher Road Solar I, LLC	Dartmouth, MA	8 GWh	Apr 2015	Dec 2023	Solar
Farmingdale FA01	Nautilus Solar Solutions	Farmingdale, ME	8 GWh	May 2022	Dec 2023	Solar
Palmyra PV - BD Solar Palmyra LLC	BD Solar Palmyra LLC	Palmyra, ME	8 GWh	May 2022	Dec 2023	Solar
Pine Hill	AEP Onsite Partners, LLC	Johnston, RI	8 GWh	Jul 2020	Dec 2023	Solar
Pepperell Hydro Power Plant	Eagle Creek Renewable Energy, LLC	Pepperell, MA	8 GWh	Dec 1919	Aug 2024	Water
River Road	Norridgewock River Road Solar, LLC	Norridgewock, ME	8 GWh	Feb 2022	Dec 2023	Solar
10 Briggs Solar NG, LLC (East)	NuGen Capital Management	East Greenwich, RI	8 GWh	May 2021	Dec 2023	Solar
Syncarpha Palmer, LLC	Syncarpha Palmer, LLC	Palmer, MA	8 GWh	Nov 2015	Dec 2023	Solar
Auburn Solar Project	Agilitas Energy, Inc.	Auburn, MA	8 GWh	Apr 2022	Dec 2023	Solar
Town House	Nautilus Solar Solutions	Chelsea, ME	8 GWh	Nov 2022	Dec 2023	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	894.0 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	63.3 TWh	554
#51	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	33.2 TWh	20
#12	New York Independent System Operator	130.0 TWh	1,100
#1	PJM Interconnection, LLC	843.8 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	191.5 TWh	1,943
#9	Tennessee Valley Authority	157.5 TWh	170
#10	Florida Power & Light Co.	147.7 TWh	159
#12	New York Independent System Operator	130.0 TWh	1,100
#13	Duke Energy Carolinas	110.9 TWh	556
#15	ISO New England	102.8 TWh	1,487
#16	Bonneville Power Administration	80.0 TWh	158
#17	Duke Energy Progress East	63.3 TWh	554
#18	Salt River Project Agricultural Improvement and Power District	59.0 TWh	45
#19	PacifiCorp East	52.6 TWh	204