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%

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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
Shirley Landfill	Altus Power America Management, LLC	Shirley, MA	1 GWh	Apr 2017	Dec 2023	Solar
Sherman Solar	Ecos Energy LLC	Griswold, CT	2 GWh	Nov 2019	Dec 2023	Solar
Sherman	Great River Hydro, LLC	Rowe, MA	35 GWh	Nov 1926	Dec 2023	Water
Shepaug	FirstLight Power Resources Services LLC	Southbury, CT	163 GWh	Dec 1954	Dec 2023	Water
Sheldon Springs Hydroelectric	Central Rivers Power US, LLC	Sheldon Springs, VT	75 GWh	Jun 1988	Dec 2023	Water
Sheldon Solar	Excelsior Energy Capital	Sheldon Springs, VT	5 GWh	Aug 2013	Jan 2023	Solar
Sheffield Wind	Evergreen Wind, LLC	Sheffield, VT	64 GWh	Sep 2011	Aug 2024	Wind
Shawmut	Brookfield White Pine Hydro LLC	Shawmut, ME	37 GWh	Dec 1912	Dec 2023	Water
Shaffer	CD US Solar MT3, LLC	Billerica, MA	6 GWh	Aug 2014	Dec 2023	Solar
Settlers Solar	Settlers Solar, LLC	Lunenberg, MA	7 GWh	Nov 2020	Dec 2023	Solar
SEMASS Resource Recovery	SEMASS Partnership	West Wareham, MA	568 GWh	Jun 1988	Aug 2024	Non-biogenic Municipal Solid Waste : 54.2% Biogenic Municipal Solid Waste : 44.4% Natural Gas : 1.3%
SELCO Community Solar	Massachusetts Mun Wholes Electric Co	Shrewsbury, MA	5 GWh	May 2018	Dec 2023	Solar
Searsburg Wind Turbine	Green Mountain Power Corp	Searsburg, VT	9 GWh	May 1997	Aug 2024	Wind
Searsburg	Great River Hydro, LLC	Searsburg, VT	22 GWh	Feb 1922	Dec 2023	Water
Seabrook	NextEra Energy Seabrook LLC	Seabrook, NH	11 TWh	Jul 1990	Aug 2024	Nuclear
Seaboard Sheffield, LLC	Navisun LLC	Sheffield, MA	3 GWh	Mar 2021	Dec 2023	Solar
Seaboard Oxford, LLC	Navisun LLC	Oxford, MA	3 GWh	Jul 2020	Dec 2023	Solar
Seaboard Charlton, LLC	Navisun LLC	Charlton, MA	3 GWh	Nov 2020	Dec 2023	Solar
SCS Harpswell 012903 Brunswick, LLC	Sol Systems	Brunswick, ME	7 GWh	Oct 2022	Dec 2023	Solar
Scotland Dam	FirstLight Power Resources Services LLC	Windham, CT	10 GWh	Dec 1936	Dec 2023	Water
Scituate Wind	Scituate Wind LLC	Scituate, MA	2 GWh	Feb 2012	Dec 2023	Wind
Scituate PV	AES Distributed Energy	Scituate, MA	4 GWh	Sep 2013	Dec 2023	Solar
Schiller	Granite Shore Power	Portsmouth, NH	776 MWh	Sep 1952	Aug 2024	Jet Fuel
Savoy Solar PV	NSTAR Electric Company	Savoy, MA	3 GWh	Jan 2019	Dec 2023	Solar
Sanford Solar	Sanford Airport Solar, LLC	Sanford, ME	88 GWh	Oct 2020	Aug 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
Salmon Falls	Green Mountain Power Corp	South Berwick, ME	5 GWh	Jun 1986	Dec 2023	Water
Salisbury	Green Mountain Power Corp	Salisbury, VT	4 GWh	Jan 1917	Dec 2023	Water
Salem Harbor Power Development LP	Salem Harbor Power Development LP	Salem, MA	1 TWh	Apr 2018	Aug 2024	Natural Gas
Saint Albans Solar	Cypress Creek Renewables	Georgia, VT	7 GWh	Sep 2018	Dec 2023	Solar
Saddleback Ridge Wind Farm	CPV Saddleback Ridge Wind, LLC	Carthage, ME	83 GWh	Nov 2014	Dec 2023	Wind
S D Warren Westbrook	Elevate Power Management LLC	Westbrook, ME	33 GWh	Dec 1902	Dec 2023	Water
S C Moore	Great River Hydro, LLC	Littleton, NH	328 GWh	Dec 1956	Dec 2023	Water
Ryegate Associates, LLC	Ryegate Associates, LLC	East Ryegate, VT	161 GWh	Aug 1992	Dec 2023	Wood/Wood Waste Solids
Ryan Road Solar LLC Hybrid(CSG)	AES Distributed Energy	North Brookfield, MA	8 GWh	Nov 2021	Dec 2023	Solar
Rutland	Green Mountain Power Corp	Rutland City, VT	84 MWh	Nov 1962	Mar 2024	Distillate Fuel Oil
Rumford Power LLC	Rumford Power	Rumford, ME	403 GWh	Jun 2000	Dec 2023	Natural Gas
Rumford Falls Hydro Facility	Brookfield Power New England	Rumford, ME	290 GWh	Dec 1917	Dec 2023	Water
Rumford Cogeneration	ND Paper, Inc.	Rumford, ME	391 GWh	Dec 1989	Aug 2024	Black Liquor : 51.2% Tire-derived Fuels : 23.1% Wood/Wood Waste Solids : 13.6% Bituminous Coal : 9.0% Residual Fuel Oil : 2.4% Sludge Waste : 0.8%
RT405 Westerlo Solar 2	RT405 Westerlo Solar 2, LLC	Albany, NY	8 GWh	Feb 2020	Dec 2023	Solar
RoxWind	RoxWind LLC	Roxbury, ME	10 GWh	Oct 2021	Dec 2023	Wind
Rowe (CSG)	AES Distributed Energy	Olean, NY	8 GWh	Oct 2021	Dec 2023	Solar
Route 57 Solar	Citizens Enterprises Corporation	Agawam, MA	2 GWh	Feb 2013	Dec 2023	Solar
Rousselot Inc	Rousselot Inc	Peabody, MA	15 GWh	Apr 1947	Nov 2023	Natural Gas
Rounseville Solar	Rounseville Solar 1, LLC	Rochester, MA	4 GWh	Jan 2020	Dec 2023	Solar
Rollinsford	Green Mountain Power Corp	Rollinsford, NH	4 GWh	Sep 1986	Dec 2023	Water
Rollins Wind Project	Evergreen Wind, LLC	Winn Village, ME	132 GWh	Jun 2011	Dec 2023	Wind
Rolfe Canal Hydro	Briar-Hydro Associates	Penacook, NH	28 GWh	Nov 1987	Dec 2023	Water
Roger Williams - Melville at Portsmouth	Luminace Solar Rhode Island, LLC	Portsmouth, RI	5 GWh	Feb 2021	Dec 2023	Solar
Rocky River (CT)	FirstLight Power Resources Services LLC	New Milford, CT	13 GWh	Dec 1927	Aug 2024	Water
Rockland Solar CSG	MN8 Energy LLC	Rockland, MA	3 GWh	Nov 2013	Dec 2023	Solar
Robin Hollow Solar	Robin Hollow Solar, LLC	West Greenwich, RI	48 GWh	Nov 2023	Aug 2024	Solar
Robbins Lumber	Robbins Lumber Inc	Searsmont, ME	97 MWh	Dec 1980	Dec 2023	Distillate Fuel Oil
Riverside Holyoke	City of Holyoke Gas and Electric Dept.	Holyoke, MA	40 GWh	Dec 1905	Dec 2023	Water
River Road	Norridgewock River Road Solar, LLC	Norridgewock, ME	8 GWh	Feb 2022	Dec 2023	Solar
Rising Paper	Altus Power America Management, LLC	Great Barrington, MA	3 GWh	Apr 2016	Dec 2023	Solar
Ridgewood Providence Power	Rhode Island LFG Genco	Johnston, RI	10 GWh	Jul 2005	Dec 2023	Landfill Gas
Richmond NMCA	AES Distributed Energy	Wood River Junction, RI	6 GWh	Nov 2018	Aug 2024	Solar
Richmond Hill	Greenbacker Renewable Energy Corporation	Richmond, ME	16 MWh	Nov 2023	Dec 2023	Solar
Rhode Island State Energy Center	RISEC Operating Services	Johnston, RI	4 TWh	Sep 2002	Aug 2024	Natural Gas
Rhode Island Solar Renewable Energy IV, LLC	Rhode Island Solar Renewable Energy IV, LLC	Tiverton, RI	1 MWh	Nov 2023	Dec 2023	Solar
Rhode Island Hospital	Rhode Island Hospital	Providence, RI	9 GWh	Sep 1974	Aug 2024	Natural Gas : 89.3% Residual Fuel Oil : 10.7%
RGS-Rutland VNM SREC II Project (MA)	TerraForm Solar XVII, LLC	Rutland, MA	2 GWh	Oct 2015	Dec 2023	Solar
Renew Canal 1 CSG LLC	NRG Renew Canal 1 LLC	Sandwich, MA	2 GWh	May 2017	Dec 2023	Solar
Rehoboth Solar	Citizens Enterprises Corporation	Rehoboth, MA	3 GWh	Nov 2013	Dec 2023	Solar
Regional Waste Systems	Ecomaine	Portland, ME	81 GWh	May 1988	Aug 2024	Non-biogenic Municipal Solid Waste : 54.4% Biogenic Municipal Solid Waste : 44.5% Natural Gas : 1.0%
ReEnergy Stratton LLC	ReEnergy Stratton LLC	Stratton, ME	177 GWh	Oct 1989	Dec 2023	Wood/Wood Waste Solids
ReEnergy Livermore Falls	ReEnergy Livermore Falls	Livermore Falls, ME	223 GWh	Jul 1992	Dec 2023	Wood/Wood Waste Solids
Redman South Community Solar	AES Distributed Energy	Brockport, NY	8 GWh	Jan 2022	Dec 2023	Solar
Redman North Community Solar	AES Distributed Energy	Brockport, NY	3 GWh	Jan 2022	Dec 2023	Solar
Redbrook Community Solar 1	Redbrook Solar 1, LLC	Plympton, MA	10 GWh	Sep 2017	Dec 2023	Solar
Redbridge	Central Rivers Power MA, LLC	Wilbraham, MA	18 GWh	Dec 1925	Aug 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%
Record Hill Wind	Record Hill Wind LLC	Roxbury, ME	111 GWh	Dec 2011	Dec 2023	Wind
Ravenbrook	Captona Ravenbrook LLC	Carver, MA	7 GWh	Nov 2013	Dec 2023	Solar
Randolph	Altus Power America Management, LLC	Randolph, MA	6 GWh	Oct 2017	Dec 2023	Solar
Randall Solar Project Hybrid	AES Distributed Energy	Berlin, MA	9 GWh	Jun 2021	Dec 2023	Solar
Rand Whitney CHP Plant	Rand Whitney Containerboard L.P.	Montville, CT	134 GWh	Mar 2005	Aug 2024	Natural Gas
Rainbow (CT)	Farmington River Power Company	Windsor, CT	38 GWh	Nov 1925	Aug 2024	Water
Rail Trail	Altus Power America Management, LLC	Great Barrington, MA	3 GWh	Apr 2016	Dec 2023	Solar
Raboth - Marion Drive	Madison Energy Holdings LLC	Kingston, MA	4 GWh	Feb 2021	Dec 2023	Solar
Quittacas Pond Solar	Consolidated Edison Solutions Inc.	Rochester, MA	5 GWh	Nov 2013	Dec 2023	Solar
Quinebaug Solar	Quinebaug Solar, LLC	Canterbury, CT	77 GWh	Nov 2021	Aug 2024	Solar
Quinebaug Lower Project	Quinebaug Associates LLC	Brooklyn, CT	10 GWh	Mar 1990	Dec 2023	Water
Putts Bridge	Central Rivers Power MA, LLC	Ludlow, MA	22 GWh	Dec 1917	Dec 2023	Water
Pumpkin Hill	KEI (Maine) Power Management (II) LLC	Lowell, ME	5 GWh	Feb 1987	Dec 2023	Water
Proctor	Green Mountain Power Corp	Proctor, VT	35 GWh	Jul 1905	Dec 2023	Water
Princeton Wind Farm	Town of Princeton - (MA)	Princeton, MA	3 GWh	Dec 2009	Dec 2023	Wind
Pratt & Whitney	United Technologies	East Hartford, CT	129 GWh	Dec 1991	Aug 2024	Natural Gas : 99.8%
Powder Hill	LSE Delphinus LLC	Enfield, CT	3 GWh	Nov 2020	Dec 2023	Solar
Potter Station 2	Town of Braintree - (MA)	Braintree, MA	32 GWh	Jun 1963	Dec 2023	Natural Gas : 88.2% Distillate Fuel Oil : 11.8%
Pontook Hydro Facility	Pontook Operating LP	Dummer, NH	58 GWh	Nov 1986	Dec 2023	Water
Plymouth Solar	NSTAR Electric Company	Plymouth, MA	1 GWh	May 2018	Dec 2023	Solar
Plymouth Site 1	CleanCapital Holdings	Plympton, MA	7 GWh	Sep 2013	Dec 2023	Solar
Pleasantdale Road Community Solar	Pleasantdale Road Solar, LLC	Rutland, MA	1 GWh	Aug 2017	Dec 2023	Solar
Pleasant Street	Greenbacker Renewable Energy Corporation	Wilton, ME	98 MWh	Nov 2023	Dec 2023	Solar
Platt Hill	LSE Pictor LLC	Winchester, CT	4 GWh	Dec 2021	Dec 2023	Solar
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

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