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
Plainfield Renewable Energy LLC	Plainfield Renewable Energy, LLC	Plainfield, CT	234 GWh	Nov 2013	Dec 2023	Wood/Wood Waste Solids : 99.6%
Plainfield Pike	Captona Plainfield Pike Johnston LLC	Johnston, RI	4 GWh	May 2019	Dec 2023	Solar
Plainfield Community Solar LLC	Plainfield Solar LLC	Plainfield, MA	3 GWh	Jan 2019	Dec 2023	Solar
Pittsford	Green Mountain Power Corp	Pittsford, VT	10 GWh	Jan 1914	Dec 2023	Water
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
Pittsfield Hydro	KEI (Maine) Power Management (II) LLC	Burnham, ME	6 GWh	Jun 1986	Dec 2023	Water
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 44 - M&W PV	NSTAR Electric Company	Pittsfield, MA	2 GWh	Jul 2018	Dec 2023	Solar
Pisgah Mountain Wind	Pisgah Mountain, LLC	Clifton, ME	24 GWh	Nov 2016	Dec 2023	Wind
Pine Hill	AEP Onsite Partners, LLC	Johnston, RI	8 GWh	Jul 2020	Dec 2023	Solar
Pfizer Groton Plant	Pfizer Inc	Groton, CT	69 GWh	Dec 1947	Aug 2024	Natural Gas : 97.6% Distillate Fuel Oil : 2.4%
Pfizer Groton Fuel Cell	Groton Fuel Cell 1 LLC	Groton, CT	42 GWh	Sep 2016	Dec 2023	Natural Gas
Peterson Road Solar	Peterson Road Solar, LLC	Palmer, MA	4 GWh	Mar 2017	Dec 2023	Solar
Peterson	Green Mountain Power Corp	Milton, VT	36 GWh	Jan 1948	Dec 2023	Water
Pepperidge Farm Bloomfield	Pepperidge Farm, Inc.- Bloomfield	Bloomfield, CT	16 GWh	Jul 2008	Dec 2023	Natural Gas
Pepperell Hydro Power Plant	Eagle Creek Renewable Energy, LLC	Pepperell, MA	8 GWh	Dec 1919	Aug 2024	Water
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%
Pendleton Solar 1	Pendleton Solar 1, LLC	Lockport, NY	7 GWh	Sep 2020	Dec 2023	Solar
Penacook Upper Falls Hydro	Briar-Hydro Associates	Penacook, NH	17 GWh	Nov 1986	Dec 2023	Water
Penacook Lower Falls	Briar-Hydro Associates	Boscawen, NH	23 GWh	Jul 1983	Dec 2023	Water
Pembroke Hydro	Eagle Creek Renewable Energy, LLC	Suncook, NH	15 GWh	Nov 1985	Dec 2023	Water
Pejepscot Hydroelectric Project	Topsham Hydro Partners	Topsham, ME	71 GWh	Oct 1987	Dec 2023	Water
Passadumkeag Windpark LLC	Southern Power Co	Greenbush, ME	122 GWh	Jun 2016	Aug 2024	Wind
Partridgeville Hybrid CSG	Partridgeville Road Solar 1, LLC	Athol, MA	6 GWh	Dec 2019	Dec 2023	Solar
Partridge Hill Solar Hybrid	AES Distributed Energy	Charlton, MA	3 GWh	Jun 2020	Dec 2023	Solar
Park St	Greenbacker Renewable Energy Corporation	Rutland, VT	2 GWh	Nov 2014	Dec 2023	Solar
Park Solar	Ecos Energy LLC	Woodbridge, CT	20 MWh	Nov 2023	Dec 2023	Solar
Palombo Solar, LLC CSG	38 Degrees North, LLC	Uxbridge, MA	3 GWh	Nov 2017	Dec 2023	Solar
Palombo B Solar, LLC CSG	38 Degrees North, LLC	Uxbridge, MA	2 GWh	Nov 2017	Dec 2023	Solar
Palmyra PV - BD Solar Palmyra LLC	BD Solar Palmyra LLC	Palmyra, ME	8 GWh	May 2022	Dec 2023	Solar
Palmer Solar LLC	Palmer Solar LLC	Palmer, MA	3 GWh	Nov 2013	Dec 2022	Solar
Palmer Landfill	Syncarpha Bondsville, LLC	Palmer, MA	4 GWh	Nov 2016	Dec 2023	Solar
Palmer	AES Distributed Energy	Palmer, MA	6 GWh	Sep 2019	Dec 2023	Solar
Padelford Solar	Consolidated Edison Solutions Inc.	Berkley, MA	3 GWh	Nov 2012	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
Oxford	CVI CleanCapital Solar 6	Oxford, MA	4 GWh	Jun 2014	Dec 2023	Solar
Ottauquechee Hydro	Green Mountain Power Corp	N. Hartland, VT	4 GWh	Mar 1983	Dec 2023	Water
Otis Hydro	Eagle Creek Renewable Energy, LLC	Livermore Falls, ME	31 GWh	Dec 1984	Aug 2024	Water
OSG Solar 1 LLC	Navisun LLC	Orange, MA	3 GWh	Jun 2012	Dec 2023	Solar
Orono Hydro Station	Brookfield Black Bear Hydro, LLC	Orono, ME	12 GWh	Dec 2008	Dec 2023	Water
Orono B	Brookfield Black Bear Hydro, LLC	Orono, ME	26 GWh	Oct 2013	Dec 2023	Water
Orbit Energy RI	Anaergia	Johnston, RI	4 GWh	Jun 2017	Dec 2022	Other Biomass Gas
Orange PV	Terraform Arcadia	Orange, MA	2 GWh	Jun 2013	Dec 2023	Solar
Orange County Solar Farm (NY)	Tesla Inc.	Goshen, NY	2 GWh	Apr 2017	Dec 2023	Solar
Open View Solar Farm	Cross Pollination Inc	New Haven, VT	3 GWh	Aug 2013	Dec 2023	Solar
Onyx - Pembroke Landfill Solar	Onyx Asset Services Group	Pembroke, MA	4 GWh	Nov 2017	Dec 2023	Solar
Onyx - Brockton Thatcher Landfill Solar CSG	Onyx Asset Services Group	Brockton, MA	4 GWh	Oct 2017	Dec 2023	Solar
Onset West Community Solar Facility	Kearsarge Onset LLC	Wareham, MA	2 GWh	Mar 2016	Dec 2022	Solar
Onset East Community Solar Facility	Kearsarge Onset LLC	Wareham, MA	2 GWh	Mar 2016	Dec 2022	Solar
Onondaga County- Clearwater	Tesla Inc.	Oswego, NY	3 GWh	Jun 2017	Dec 2023	Solar
Oneida County- DPW	Tesla Inc.	Oriskany, NY	2 GWh	Sep 2017	Dec 2023	Solar
One Patriot	Bloom Energy	Foxborough, MA	13 GWh	Nov 2019	Dec 2023	Natural Gas
Old Wardour Solar	NuGen Capital Management	East Brookfield, MA	7 GWh	Dec 2015	Dec 2023	Solar
Old Middleboro Road Solar	Agilitas Energy, Inc.	Rochester, MA	10 GWh	Dec 2022	Dec 2023	Solar
Ocean State Power II	Ocean State Power II	Harrisville, RI	1 TWh	Sep 1991	Dec 2023	Natural Gas : 99.7%
Ocean State Power	Ocean State Power Co	Harrisville, RI	1 TWh	Nov 1990	Dec 2023	Natural Gas : 99.6%
Oakland	Nautilus Solar Solutions	Oakland, ME	8 GWh	Aug 2022	Dec 2023	Solar
Oakfield Wind Project	Onward Energy	City of Oakfield, ME	316 GWh	Sep 2015	Aug 2024	Wind
Oakdale Power Station	Massachusetts Water Res Auth	West Boylston, MA	12 GWh	Apr 1951	Dec 2023	Water
Oak Street Solar	Citizens Enterprises Corporation	Springfield, MA	5 GWh	Nov 2019	Dec 2023	Solar
Oak Bluffs Diesel Generating Facility	Vineyard Reliability LLC	Oak Bluffs, MA	1 GWh	Dec 1968	Dec 2023	Distillate Fuel Oil
Nutmeg Solar	Nutmeg Solar LLC	Enfield, CT	33 GWh	Nov 2020	Dec 2023	Solar
Nunnepog	Clean Focus Yield, LLC	Edgartown, MA	2 GWh	May 2014	Dec 2023	Solar
Notus Wind 1	Notus Clean Energy LLC	E. Falmouth, MA	4 GWh	Jun 2010	Dec 2023	Wind
Norwich WWTP	City of Norwich - (CT)	Norwich, CT	1 MWh	Apr 2006	Mar 2024	Distillate Fuel Oil
Norwalk Hospital Plant	Norwalk Hospital	Norwalk, CT	4 GWh	Apr 1992	Dec 2022	Natural Gas
Norton Powerhouse 2	Norton Powerhouse 2	Worcester, MA	29 GWh	Oct 2022	Dec 2023	Natural Gas
Norton LLC	Greenbacker Renewable Energy Corporation	Norton, MA	5 GWh	Aug 2020	Dec 2023	Solar
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
Northbridge Solar	Consolidated Edison Development Inc.	South Grafton, MA	3 GWh	Jul 2013	Dec 2023	Solar
Northampton Landfill Solar PV	Ameresco Glendale Road Solar PV LLC	Northampton, MA	4 GWh	Oct 2017	Dec 2023	Solar
North Stonington Solar Center, LLC	Adapture Renewables, Inc.	North Stonington, CT	31 GWh	Sep 2022	Dec 2023	Solar
North Smithfield Solar Power 1	AEP Onsite Partners, LLC	North Smithfield, RI	919 MWh	Nov 2018	Dec 2023	Solar
North Providence	Captona N.P. LLC	North Providence, RI	3 GWh	Sep 2018	Dec 2023	Solar
North Main Street	City of Norwich - (CT)	Norwich, CT	138 MWh	Jul 1972	May 2023	Distillate Fuel Oil
North Kingstown Solar LLC	North Kingstown Solar LLC	North Kingstown, RI	3 GWh	Aug 2022	Dec 2023	Solar
North Gorham	Brookfield White Pine Hydro LLC	Gorham, ME	9 GWh	Dec 1924	Dec 2023	Water
North Brookfield	Mass Solar, LLC	North Brookfield, MA	4 GWh	May 2014	Dec 2023	Solar
North Bridgton	Nautilus Solar Solutions	Oakland, ME	8 GWh	Oct 2022	Dec 2023	Solar
North Adams Landfill	Syncarpha North Adams, LLC	North Adams, MA	3 GWh	Sep 2015	Dec 2023	Solar
Norden 1-3	Third Taxing District of Norwalk	Norwalk, CT	42 MWh	May 2004	Dec 2022	Distillate Fuel Oil
Norcap South	LSE Coma Berenices LLC	East Windsor, CT	3 GWh	Nov 2017	Dec 2023	Solar
Norcap North	LSE Canes Venatici LLC	East Windsor, CT	3 GWh	Nov 2017	Dec 2023	Solar
Nolan	Strata Manager, LLC	Great Barrington, MA	2 GWh	Oct 2017	Dec 2023	Solar
Niagara Depot Solar	Niagara Depot Solar, LLC	Niagara Falls, NY	2 GWh	Jun 2023	Dec 2023	Solar
Niagara Bottling - Bloomfield	Westbound Solar 3, LLC	Bloomfield, CT	4 GWh	Oct 2022	Dec 2023	Solar
NFM Solar Power LLC	FirstLight Power Resources, Inc. - MA	Northfield, MA	2 GWh	Feb 2012	Dec 2023	Solar
Nextsun Energy Littleton	Greenbacker Renewable Energy Corporation	Littleton, MA	5 GWh	Sep 2013	Dec 2023	Solar
Next Generation Solar Farm	Cypress Creek Renewables	New Haven, VT	4 GWh	Nov 2017	Dec 2023	Solar
Nexamp Peak CSG	Nexamp Peak, LLC	Hancock, MA	2 GWh	Nov 2015	Dec 2023	Solar
Newton Rumford Landfill	Newton Municipal Solar LLC - Rumford	Newton, MA	3 GWh	Jun 2017	Dec 2023	Solar
Newport	Great Bay Hydro Corp	Newport, VT	20 GWh	Dec 1935	Dec 2023	Water
Newington	Granite Shore Power	Newington, NH	53 GWh	May 1974	Aug 2024	Natural Gas : 91.5% Residual Fuel Oil : 8.3%
Newington	Essential Power Operating Services, LLC	Newington, NH	861 GWh	Sep 2002	Aug 2024	Natural Gas : 99.9%
Newfound Hydroelectric	Eagle Creek Renewable Energy, LLC	Bristol, NH	8 GWh	Nov 1983	Dec 2023	Water
New Milford Gas Recovery	WM Renewable Energy LLC	New Milford, CT	5 GWh	Apr 2008	Dec 2023	Landfill Gas
New Haven Harbor	Generation Bridge II Connecticut, LLC	New Haven, CT	30 GWh	Jun 1975	Aug 2024	Natural Gas : 83.2% Kerosene : 16.8%

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