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	Dec 2024
Annual Generation	103.6 TWh
Power Plants	1,487
Utilities	782
Ranked #15 out of 65 in terms of net annual generation
Ranked #12 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 57.4% Nuclear \| 25.1% Water \| 7.4% Other Fuel \| 4.5% Wind \| 3.3% Solar \| 1.2% Coal \| 0.2%

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
Advance Stores Company, Inc	Tesla Inc.	Enfield, CT	1 GWh	Oct 2014	Dec 2023	Solar
Town of East Bridgewater CSG	Tesla Inc.	East Bridgewater, MA	1 GWh	May 2013	Dec 2023	Solar
BJ's Wholesale Club, Inc- Uxbridge	Tesla Inc.	Uxbridge, MA	496 MWh	Jun 2017	Dec 2023	Solar
CMEEC - Norwich Stott St Solar Hybrid	Tesla Inc.	Norwich, CT	2 GWh	Nov 2016	Dec 2023	Solar
CMEEC - Navy NE Trident	Tesla Inc.	Groton, CT	1 GWh	May 2017	Dec 2023	Solar
Onondaga County- Clearwater	Tesla Inc.	Oswego, NY	3 GWh	Jun 2017	Dec 2023	Solar
Town of Halfmoon	Tesla Inc.	Waterford, NY	1 GWh	May 2017	Dec 2023	Solar
Greene County Meter #1	Tesla Inc.	Cairo, NY	1 GWh	Jan 2018	Dec 2023	Solar
Town of Needham VNEM CSG	Tesla Inc.	Needham, MA	4 GWh	Jan 2016	Dec 2023	Solar
Hampshire College Hybrid	Tesla Inc.	Amherst, MA	5 GWh	Apr 2017	Dec 2023	Solar
Williamsburg Solar LLC VNEM CSG	Tesla Inc.	Haydenville, MA	3 GWh	Jan 2016	Dec 2023	Solar
CMEEC - Rogers Rd Solar	Tesla Inc.	Norwich, CT	2 GWh	Jan 2017	Dec 2023	Solar
Hewlett-Packard (HP) - Andover, MA	Tesla Inc.	Andover, MA	1 GWh	May 2017	Dec 2023	Solar
Oneida County- DPW	Tesla Inc.	Oriskany, NY	2 GWh	Sep 2017	Dec 2023	Solar
Conn Mun Electric Energy Coop	Tesla Inc.	Norwich, CT	1 GWh	Nov 2016	Dec 2023	Solar
Orange County Solar Farm (NY)	Tesla Inc.	Goshen, NY	2 GWh	Apr 2017	Dec 2023	Solar
Town of Rocky Hill PV CSG	Tesla Inc.	Rocky Hill, CT	5 GWh	Feb 2018	Dec 2023	Solar
RGS-Rutland VNM SREC II Project (MA)	TerraForm Solar XVII, LLC	Rutland, MA	2 GWh	Oct 2015	Dec 2023	Solar
BlueWave Capital - Grafton (SREC II)	TerraForm Solar XVII, LLC	Grafton, MA	2 GWh	Feb 2015	Dec 2023	Solar
Bellingham PV	Terraform Arcadia	Douglas, MA	4 GWh	Sep 2013	Dec 2023	Solar
Brookside	Terraform Arcadia	North Smithfield, RI	2 GWh	Oct 2015	Dec 2023	Solar
MDFA Devens-Saratoga	Terraform Arcadia	Devens, MA	3 GWh	Feb 2016	Dec 2023	Solar
Marshfield PV	Terraform Arcadia	Marshfield, MA	5 GWh	Nov 2013	Dec 2023	Solar
Southbridge PV	Terraform Arcadia	Southbridge, MA	4 GWh	Dec 2013	Dec 2023	Solar
Orange PV	Terraform Arcadia	Orange, MA	2 GWh	Jun 2013	Dec 2023	Solar
Maynard PV	Terraform Arcadia	Maynard, MA	1 GWh	Dec 2013	Dec 2023	Solar
AIS Solar Project	Terraform Arcadia	Leominster, MA	4 GWh	Nov 2016	Dec 2023	Solar
Tanglewood Circle Solar 1 LLC	Tanglewood Circle Solar 1 LLC	Becket, MA	7 GWh	Oct 2018	Dec 2023	Solar
Syncarpha Westminster Hybrid CSG	Syncarpha Westminster, LLC	Westminster, MA	6 GWh	Oct 2022	Dec 2023	Solar
Syncarpha Tewksbury Hybrid CSG	Syncarpha Tewksbury, LLC	Tewksbury, MA	4 GWh	Jan 2022	Dec 2023	Solar
Syncarpha Still River, LLC CSG	Syncarpha Still River, LLC	Bolton, MA	3 GWh	Nov 2016	Dec 2023	Solar
Syncarpha Puddon II Hybrid CSG	Syncarpha Puddon II, LLC	Northbridge, MA	9 GWh	Feb 2021	Dec 2022	Solar
Syncarpha Puddon I Hybrid CSG	Syncarpha Puddon I, LLC	Northbridge, MA	9 GWh	Feb 2021	Dec 2022	Solar
Syncarpha Palmer, LLC	Syncarpha Palmer, LLC	Palmer, MA	8 GWh	Nov 2015	Dec 2023	Solar
Syncarpha Northbridge II Hybrid CSG	Syncarpha Northbridge II, LLC	Whitinsville, MA	8 GWh	Mar 2021	Dec 2023	Solar
Syncarpha Northbridge I Hybrid(CSG)	Syncarpha Northbridge I, LLC	Whitinsville, MA	9 GWh	Nov 2021	Dec 2023	Solar
Syncarpha Northampton Hybrid CSG	Syncarpha Northampton, LLC	Northampton, MA	5 GWh	Nov 2020	Dec 2023	Solar
North Adams Landfill	Syncarpha North Adams, LLC	North Adams, MA	3 GWh	Sep 2015	Dec 2023	Solar
Syncarpha Millbury Hybrid (CSG)	Syncarpha Millbury, LLC	Millbury, MA	8 GWh	Sep 2022	Dec 2023	Solar
Leominster	Syncarpha Massachusetts, LLC	Leominster, MA	3 GWh	Apr 2015	Dec 2023	Solar
Town of Lexington Solar	Syncarpha Lexington, LLC	Lexington, MA	2 GWh	Apr 2017	Dec 2023	Solar
Syncarpha Leicester Hybrid CSG	Syncarpha Leicester, LLC	Leicester, MA	4 GWh	May 2021	Dec 2023	Solar : 99.5% Electricity used for energy storage : 0.5%
Syncarpha Hancock III CSG	Syncarpha Hancock III, LLC	Pittsfield, MA	2 GWh	Oct 2017	Dec 2023	Solar
Syncarpha Hancock II CSG	Syncarpha Hancock II, LLC	Hancock, MA	3 GWh	Oct 2017	Dec 2023	Solar
Syncarpha Hancock I CSG	Syncarpha Hancock I, LLC	Hancock, MA	3 GWh	Oct 2017	Dec 2023	Solar
Syncarpha Halifax Hybrid CSG	Syncarpha Halifax, LLC	Halifax, MA	3 GWh	Nov 2020	Dec 2023	Solar : 99.0%
Palmer Landfill	Syncarpha Bondsville, LLC	Palmer, MA	4 GWh	Nov 2016	Dec 2023	Solar
Syncarpha Blandford Hybrid CSG	Syncarpha Blandford, LLC	Blandford, MA	8 GWh	Nov 2019	Dec 2023	Solar
Sutton Solar CSG	Sutton Solar, LLC	Sutton, MA	3 GWh	Oct 2016	Dec 2023	Solar
Sutton Solar 2, LLC CSG	Sutton Solar 2, LLC	Sutton, MA	1 GWh	Nov 2020	Dec 2023	Solar
Westborough Solar LLC	SunRay Power LLC	Westborough, MA	2 GWh	Mar 2014	Dec 2023	Solar
Templeton	Sunny Templeton, LLC	Templeton, MA	5 GWh	Nov 2014	Dec 2023	Solar
SunGen Sharon 1 LLC	SunGen Sharon 1 LLC	Sharon, VT	3 GWh	Jul 2012	Dec 2023	Solar
Berkley East Solar LLC	SunEdison LLC	Berkley, MA	5 GWh	Jun 2013	Dec 2023	Solar
CES Sterling LLC	SunEdison LLC	Sterling, MA	3 GWh	Jan 2013	Dec 2023	Solar
Lower Village Water Power Project	Sugar River Power LLC	Claremont, NH	6 GWh	Apr 1995	Dec 2023	Water
Sugar Hill Solar 1	Sugar Hill Solar 1, LLC	Clifton Park, NY	8 GWh	Nov 2020	Dec 2023	Solar
Truck Stop	Strata Manager, LLC	West Stockridge, MA	3 GWh	Oct 2017	Dec 2023	Solar
Bradford Solar	Strata Manager, LLC	Haverhill, MA	7 GWh	Mar 2017	Dec 2023	Solar
Nolan	Strata Manager, LLC	Great Barrington, MA	2 GWh	Oct 2017	Dec 2023	Solar
Indeck West Enfield Energy Center	Stored Solar J&WE	West Enfield, ME	13 GWh	Nov 1987	Dec 2023	Wood/Wood Waste Solids : 99.7%
Central Power Plant	State of Rhode Island	Cranston, RI	19 GWh	Jul 1958	Sep 2024	Natural Gas
Town of Burrillville Solar CSG	Standard Solar	Burrillville, RI	4 GWh	Sep 2020	Dec 2023	Solar
MHG Wallingford	Standard Solar	Wallingford, VT	4 GWh	Nov 2019	Dec 2023	Solar
Fort Fairfield	Standard Solar	Fairfield, ME	1 GWh	Jul 2023	Dec 2023	Solar
Stamford Health	Stamford Health Systems, Inc.	Stamford, CT	84 MWh	Dec 1983	Dec 2022	Distillate Fuel Oil
Stafford St Solar 3 CSG	Stafford St Solar 3, LLC	Leicester, MA	2 GWh	Nov 2017	Dec 2023	Solar
Stafford St 2 Community Solar	Stafford St Solar 2, LLC	Lecister, MA	3 GWh	Apr 2018	Dec 2023	Solar
Stafford St Solar 1 CSG	Stafford St Solar 1, LLC	Leicester, MA	12 GWh	Nov 2017	Dec 2023	Solar
St. Albans SPEED Project	St. Albans Solar Partners, LLC	St. Albans, VT	2 GWh	Nov 2013	Dec 2023	Solar
Spring Street Solar 1 CSG	Spring Street Solar 1, LLC	Carver, MA	5 GWh	Feb 2017	Dec 2023	Solar
Southern Sky Renew Energy Berkley LLC	Southern Sky Renewable Energy Berkley, LLC	Berkley, MA	3 GWh	May 2014	Dec 2023	Solar
Passadumkeag Windpark LLC	Southern Power Co	Greenbush, ME	121 GWh	Jun 2016	Sep 2024	Wind
Southbridge Landfill Gas-to-Energy	Southbridge Recycling and Disposal Park	Southbridge, MA	12 GWh	Sep 2011	Dec 2023	Landfill Gas
Leominster (MA)-South Street-R&D	South Street Solar, LLC	Tewksbury, MA	3 GWh	Nov 2013	Dec 2023	Solar
South Windsor Fuel Cell	South Energy Investments LLC	South Windsor, CT	39 GWh	Feb 2020	Dec 2023	Natural Gas
Amazon BDL3 Solar Project	Solar Star Prime 1 LLC	New Haven, CT	1 GWh	Sep 2019	Dec 2023	Solar
Solar Mule, LLC	Solar Mule, LLC	Oakland, ME	2 GWh	Aug 2017	Dec 2023	Solar
McAllister Landfill	Solar Breakers LLC	Portsmouth, RI	693 MWh	Sep 2022	Dec 2023	Solar
Tank Farm 4	Solar Breakers LLC	Portsmouth, RI	4 GWh	Sep 2022	Dec 2023	Solar
SCS Harpswell 012903 Brunswick, LLC	Sol Systems	Brunswick, ME	7 GWh	Oct 2022	Dec 2023	Solar
VEC Alburgh Array	SoCore Energy LLC	Alburgh, VT	1 GWh	Nov 2016	Dec 2023	Solar
VEC Magee Hill Solar	SoCore Energy LLC	Hinesburgh, VT	2 GWh	Oct 2017	Dec 2023	Solar
Smithfield Solar Farm, LLC	Smithfield Solar Farm	Smithfield, RI	4 GWh	Jun 2020	Dec 2023	Solar
TES Rowtier	SkyHigh 2 Solar	Westminster, MA	5 GWh	Mar 2021	Dec 2023	Solar
SJA Solar LLC-Solterra Monastery CSG	SJA Solar, LLC	Spencer, MA	72 GWh	Nov 2016	Dec 2023	Solar
Hillsborough Hosiery	Silverstreet Hydro	Hillsboro, NH	2 GWh	Nov 1989	Dec 2023	Water
Sikorsky Aircraft CHP	Sikorsky Aircraft Corporation	Stratford, CT	64 GWh	May 2010	Dec 2023	Natural Gas : 99.9%
Milton Hydro	SFR Hydro Cor	Milton, NH	8 GWh	Dec 1913	Dec 2023	Water
Settlers Solar	Settlers Solar, LLC	Lunenberg, MA	7 GWh	Nov 2020	Dec 2023	Solar
SEMASS Resource Recovery	SEMASS Partnership	West Wareham, MA	569 GWh	Jun 1988	Sep 2024	Non-biogenic Municipal Solid Waste : 54.2% Biogenic Municipal Solid Waste : 44.4% Natural Gas : 1.4%
Hardwick-Athol & Eagle Hill	SEC CRSD Solar One, LLC	Hardwick, MA	3 GWh	Jun 2015	Dec 2023	Solar
Scituate Wind	Scituate Wind LLC	Scituate, MA	2 GWh	Feb 2012	Dec 2023	Wind
Somerset Plant	Sappi Fine Paper North America-Somerset	Skowhegan, ME	495 GWh	Dec 1975	Sep 2024	Black Liquor : 45.9% Wood/Wood Waste Solids : 37.4% Natural Gas : 6.6% Tire-derived Fuels : 6.5% Residual Fuel Oil : 2.4% Sludge Waste : 1.0%
Sanford Solar	Sanford Airport Solar, LLC	Sanford, ME	89 GWh	Oct 2020	Sep 2024	Solar
Sampson Road Community Solar	Sampson Road Solar, LLC	Charlton, MA	3 GWh	Nov 2017	Dec 2023	Solar
Samoset Solar	Samoset Solar, LLC	Rockport, ME	2 GWh	Jun 2023	Dec 2023	Solar
Salem Harbor Power Development LP	Salem Harbor Power Development LP	Salem, MA	1 TWh	Apr 2018	Sep 2024	Natural Gas
Ryegate Associates, LLC	Ryegate Associates, LLC	East Ryegate, VT	161 GWh	Aug 1992	Dec 2023	Wood/Wood Waste Solids
Rumford Power LLC	Rumford Power	Rumford, ME	403 GWh	Jun 2000	Dec 2023	Natural Gas

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	900.7 GWh	4
#25	Dominion Energy South Carolina, Inc.	26.0 TWh	85
#13	Duke Energy Carolinas	110.8 TWh	556
#17	Duke Energy Progress East	63.1 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	129.6 TWh	1,100
#1	PJM Interconnection, LLC	842.1 TWh	2,305
#31	South Carolina Public Service Authority	17.8 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	191.4 TWh	1,943
#9	Tennessee Valley Authority	157.5 TWh	170
#10	Florida Power & Light Co.	147.4 TWh	159
#12	New York Independent System Operator	129.6 TWh	1,100
#13	Duke Energy Carolinas	110.8 TWh	556
#15	ISO New England	103.6 TWh	1,487
#16	Bonneville Power Administration	79.9 TWh	158
#17	Duke Energy Progress East	63.1 TWh	554
#18	Salt River Project Agricultural Improvement and Power District	58.9 TWh	45
#19	PacifiCorp East	52.9 TWh	204