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	Jun 2025
Annual Generation	103.1 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 \| 57.2% Nuclear \| 24.7% Water \| 6.2% Other Fuel \| 4.5% Wind \| 3.7% Solar \| 1.4% Coal \| 0.3%

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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
Sherman Solar	Ecos Energy LLC	Griswold, CT	2 GWh	Nov 2019	Dec 2023	Solar
Jackson Solar (CT)	Ecos Energy LLC	Griswold, CT	2 GWh	Nov 2019	Dec 2023	Solar
Sydney Solar	Ecos Energy LLC	Hampton, CT	3 GWh	May 2020	Dec 2023	Solar
Dickinson Solar (CT)	Ecos Energy LLC	Hampton, CT	3 GWh	May 2020	Dec 2023	Solar
Becton Canaan	DG Northeast 1, LLC	North Canaan, CT	3 GWh	Feb 2018	Dec 2023	Solar
Plainfield Solar 2	Ecos Energy LLC	Plainfield, CT	1 GWh	Mar 2020	Dec 2023	Solar
Partridge Hill Solar Hybrid	AES Distributed Energy	Charlton, MA	3 GWh	Jun 2020	Dec 2023	Solar
Natick Mall	Natick Mall	Natick, MA	3 GWh	Sep 2018	Dec 2023	Solar
South Windsor Fuel Cell	South Energy Investments LLC	South Windsor, CT	39 GWh	Feb 2020	Dec 2023	Natural Gas
Sutton Solar 2, LLC CSG	Sutton Solar 2, LLC	Sutton, MA	1 GWh	Nov 2020	Dec 2023	Solar
Granby Solar, LLC CSG	Granby Solar, LLC	Granby, MA	6 GWh	Jun 2021	Dec 2023	Solar
Ticket Network South Windsor	EnterSolar	South Windsor, CT	2 GWh	Apr 2018	Dec 2023	Solar
Corbin Russwin Phase 3 Berlin	EnterSolar	Berlin, CT	2 GWh	Mar 2018	Dec 2023	Solar
GSPP Gilman, LLC	Green Street Power Partners	Lunenburg, VT	3 GWh	Aug 2018	Dec 2023	Solar
CP Middletown Solar I LLC	Green Street Power Partners	Middletown, CT	2 GWh	Nov 2019	Dec 2023	Solar
CP Middletown Solar II LLC	Green Street Power Partners	Middletown, CT	2 GWh	Nov 2019	Dec 2023	Solar
Kearsarge Amesbury Hybrid	Kearsarge Amesbury LLC	Amesbury, MA	5 GWh	Nov 2019	Dec 2023	Solar
UB Fuel Cell	UB Fuel Cell	Bridgeport, CT	10 GWh	Mar 2015	Dec 2023	Natural Gas
Hurteau Solar Project Hybrid	AES Distributed Energy	Uxbridge, MA	3 GWh	Feb 2020	Dec 2023	Solar : 98.8%
Alicea Solar Project Hybrid CSG	AES Distributed Energy	Southbridge, MA	4 GWh	Nov 2020	Dec 2023	Solar
McDougle-Mitchell Solar Project Hybrid CSG	AES Distributed Energy	Charlton, MA	7 GWh	Jul 2020	Dec 2023	Solar
Cycz Solar Project CSG Hybrid	AES Distributed Energy	Spencer, MA	3 GWh	May 2020	Dec 2023	Solar
West A&B Solar Project Hybrid CSG	AES Distributed Energy	Southbridge, MA	5 GWh	Nov 2020	Dec 2023	Solar
Annese Solar Project Hybrid CSG	AES Distributed Energy	Southbridge, MA	7 GWh	Nov 2020	Dec 2023	Solar
Randall Solar Project Hybrid	AES Distributed Energy	Berlin, MA	9 GWh	Jun 2021	Dec 2023	Solar
Amazon BDL3 Solar Project	Solar Star Prime 1 LLC	New Haven, CT	1 GWh	Sep 2019	Dec 2023	Solar
Samoset Solar	Samoset Solar, LLC	Rockport, ME	2 GWh	Jun 2023	Dec 2023	Solar
St. Joseph's Solar, LLC CSG	38 Degrees North, LLC	Charlton, MA	2 GWh	Nov 2017	Dec 2023	Solar
Boutillier Solar, LLC CSG	38 Degrees North, LLC	Leicester, MA	5 GWh	Mar 2018	Dec 2023	Solar
Blair Wire Village Solar, LLC CSG	38 Degrees North, LLC	Spencer, MA	2 GWh	Nov 2017	Dec 2023	Solar
Barton Acres Solar, LLC CSG	38 Degrees North, LLC	Phillipston, MA	2 GWh	Sep 2017	Dec 2023	Solar
Cherry Valley Solar, LLC CSG	38 Degrees North, LLC	Leicester, MA	2 GWh	Oct 2017	Dec 2023	Solar
ISM Solar Dighton 2, LLC CSG	38 Degrees North, LLC	Dighton, MA	4 GWh	Nov 2017	Dec 2023	Solar
Incom Solar, LLC CSG	38 Degrees North, LLC	Charlton, MA	4 GWh	Oct 2017	Dec 2023	Solar
JH Solar, LLC CSG	38 Degrees North, LLC	North Brookfield, MA	2 GWh	Oct 2017	Dec 2023	Solar
Woodchuck Solar, LLC CSG	38 Degrees North, LLC	Spencer, MA	2 GWh	Nov 2017	Dec 2023	Solar
Dudley River 3 Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2023	Solar
Dudley River 2 Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2023	Solar
Dudley River Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2023	Solar
Ledeaux Solar, LLC CSG	38 Degrees North, LLC	North Brookfield, MA	1 GWh	Oct 2017	Dec 2023	Solar
Cohasse Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Sep 2017	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
Nutmeg Solar	Nutmeg Solar LLC	Enfield, CT	33 GWh	Nov 2020	Dec 2023	Solar
One Patriot	Bloom Energy	Foxborough, MA	13 GWh	Nov 2019	Dec 2023	Natural Gas
Bowden Solar LLC	38DN Power Fund 1 LLC	Monson, MA	3 GWh	Feb 2019	Dec 2023	Solar
Lakeville Solar	C2 MA Lakeville, LLC	Lakeville, MA	3 GWh	Nov 2018	Dec 2023	Solar
Oak Street Solar	Citizens Enterprises Corporation	Springfield, MA	5 GWh	Nov 2019	Dec 2023	Solar
Cranberry Solar	GWE Cranberry Solar RT, LLC	Middleborough, MA	2 GWh	Nov 2016	Dec 2023	Solar
ISM Solar Cranston CSG	Nautilus Solar Solutions	Cranston, RI	4 GWh	Nov 2020	Dec 2023	Solar
CES Agawam Tuckahoe Solar Hybrid	CES Agawam Tuckahoe Solar LLC	Agawam, MA	7 GWh	Nov 2021	Dec 2023	Solar
Partridgeville Hybrid CSG	Partridgeville Road Solar 1, LLC	Athol, MA	6 GWh	Dec 2019	Dec 2023	Solar
Williamsville Hybrid CSG	Williamsville Road LLC	Hubbardston, MA	7 GWh	Aug 2021	Dec 2023	Solar
East Brookfield Main Street Solar LLC CSG	AES Distributed Energy	East Brookfield, MA	2 GWh	Nov 2020	Dec 2023	Solar
GD Hopkinton Main I, LLC	GD Hopkinton Main I, LLC	Hopkinton, RI	16 GWh	Oct 2020	Dec 2023	Solar
Milo PV - BD Solar 1 LLC	BD Solar 1 LLC	Milo, ME	25 GWh	May 2021	Dec 2023	Solar
Augusta PV - BD Solar Augusta LLC	BD Solar Augusta LLC	Augusta, ME	7 GWh	May 2021	Dec 2023	Solar
Fairfield PV - BD Solar Fairfield LLC	BD Solar Fairfield LLC	Fairfield, ME	8 GWh	May 2021	Dec 2023	Solar
Oxford PV - BD Solar Oxford LLC	BD Solar Oxford LLC	Oxford, ME	11 GWh	May 2021	Dec 2023	Solar
Blackhorse Farm Solar, LLC CSG	AES Distributed Energy	Warren, RI	6 GWh	Nov 2020	Dec 2023	Solar
Erving CSG	Erving Poplar Mountain Solar 1, LLC	Erving, MA	1 GWh	Aug 2020	Dec 2023	Solar
Easthampton CSG	Easthampton Park Solar 1, LLC	Easthampton, MA	4 GWh	Aug 2020	Dec 2023	Solar
Pine Hill	AEP Onsite Partners, LLC	Johnston, RI	8 GWh	Jul 2020	Dec 2023	Solar
Amaterasu LLC	AES Distributed Energy	Lancaster, MA	7 GWh	May 2021	Dec 2023	Solar
28 Livermore Hill Road Solar	28 Livermore Hill Road Solar, LLC	Westminster, MA	8 GWh	May 2020	Dec 2023	Solar
Montague Road Solar	Montague Road Solar, LLC	Amherst, MA	4 GWh	Nov 2019	Dec 2023	Solar
Fitchburg Renewables	Fitchburg Renewables, LLC	Fitchburg, MA	6 GWh	Feb 2020	Dec 2023	Solar
SELCO Community Solar	Massachusetts Mun Wholes Electric Co	Shrewsbury, MA	5 GWh	May 2018	Dec 2023	Solar
Palmyra PV - BD Solar Palmyra LLC	BD Solar Palmyra LLC	Palmyra, ME	8 GWh	May 2022	Dec 2023	Solar
Generate Colchester Fuel Cells, LLC	Generate Colchester Fuel Cells, LLC	Colchester, CT	82 GWh	Sep 2021	Dec 2023	Natural Gas
Little Falls Solar	Little Falls Solar	Little Falls, NY	4 GWh	Sep 2020	Dec 2023	Solar
Little Falls Solar 1	Little Falls Solar 1, LLC	Little Falls, NY	3 GWh	Aug 2020	Dec 2023	Solar
Burlington Solar 1	DG Connecticut III, LLC	Burlington, CT	5 GWh	Jan 2022	Dec 2023	Solar
1639 RT 29 Solar 1	1639 RT 29 Solar 1, LLC	Gloversville, NY	7 GWh	Nov 2020	Dec 2023	Solar
1639 RT 29 Solar 2	1639 RT 29 Solar 2, LLC	Gloversville, NY	5 GWh	Nov 2020	Dec 2023	Solar
Dynamic Corinth (CSG)	MN8 Energy LLC	Corinth, ME	4 GWh	Sep 2022	Dec 2023	Solar
Dynamic Madison	MN8 Energy LLC	Madison, ME	9 GWh	Jul 2022	Dec 2023	Solar
Kearsarge Smithfield LLC	Kearsarge Smithfield LLC	Burrillville, RI	11 GWh	Mar 2023	Dec 2023	Solar
Kearsarge 100 Sohier Rd	Kearsarge Beverly LLC	Beverly, MA	3 GWh	Apr 2023	Dec 2023	Solar
Kearsarge West Shore Solar LLC	Kearsarge West Shore Solar LLC	Portsmouth, RI	7 GWh	Nov 2022	Dec 2023	Solar
Harmony Solar	Maine DG Solar Harmony, LLC	Harmony, ME	9 GWh	Jul 2022	Dec 2023	Solar
Norton Powerhouse 2	Norton Powerhouse 2	Worcester, MA	29 GWh	Oct 2022	Dec 2023	Natural Gas
Sugar Hill Solar 1	Sugar Hill Solar 1, LLC	Clifton Park, NY	8 GWh	Nov 2020	Dec 2023	Solar
3104 Batavia Solar	3104 Batavia Solar, LLC	Batavia, NY	5 GWh	Feb 2021	Dec 2023	Solar
3232 Batavia Solar	3232 Batavia Solar, LLC	Batavia, NY	7 GWh	Feb 2021	Dec 2023	Solar
Niagara Depot Solar	Niagara Depot Solar, LLC	Niagara Falls, NY	2 GWh	Jun 2023	Dec 2023	Solar
Arctaris Saddleback Solar	Arctaris Saddleback Solar, LLC	Dallas Plantation, ME	201 MWh	Oct 2023	Dec 2023	Solar
Water Street Solar	AES Distributed Energy	Randolph, ME	6 GWh	Nov 2022	Dec 2023	Solar
Niagara Bottling - Bloomfield	Westbound Solar 3, LLC	Bloomfield, CT	4 GWh	Oct 2022	Dec 2023	Solar
Town of Amherst Solar	Town of Amherst Solar, LLC	Amherst, MA	4 GWh	Jul 2022	Dec 2023	Solar
Beacon Solar, LLC	Beacon Solar, LLC	Easthampton, MA	4 GWh	Oct 2022	Dec 2023	Solar
Huxley Solar	Huxley Solar, LLC	Ludlow, MA	4 GWh	Nov 2022	Dec 2023	Solar
Treasure Lane Solar 1	AES Clean Energy	Manchester, ME	1 GWh	Apr 2023	Dec 2023	Solar
Pleasant Street	Greenbacker Renewable Energy Corporation	Wilton, ME	98 MWh	Nov 2023	Dec 2023	Solar
Connecticut College	Bloom Energy	New London, CT	8 GWh	Aug 2019	Dec 2023	Natural Gas
CoreSite - Somerville	Bloom Energy	Somerville, MA	30 GWh	Aug 2020	Dec 2023	Natural Gas
Blacksmith Road Solar 1	Blacksmith Road Solar 1, LLC	Falmouth, MA	8 GWh	Nov 2021	Dec 2023	Solar
Electric Avenue Lunenburg Solar 1	Electric Avenue Lunenburg Solar 1, LLC	Lunenburg, MA	2 GWh	Nov 2021	Dec 2023	Solar
Harbor Road Solar 1	Harbor Road Solar 1, LLC	Cheshire, MA	3 GWh	Nov 2021	Dec 2023	Solar
Marlborough Solar	Marlborough Solar, LLC	Milton, NY	3 GWh	Feb 2021	Dec 2023	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	734.7 GWh	4
#25	Dominion Energy South Carolina, Inc.	26.1 TWh	85
#13	Duke Energy Carolinas	111.4 TWh	556
#17	Duke Energy Progress East	65.0 TWh	554
#52	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	33.8 TWh	20
#12	New York Independent System Operator	130.6 TWh	1,100
#1	PJM Interconnection, LLC	858.1 TWh	2,305
#29	South Carolina Public Service Authority	19.2 TWh	33
#60	Southeastern Power Administration	1.4 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	190.4 TWh	1,943
#8	Tennessee Valley Authority	158.8 TWh	170
#10	Florida Power & Light Co.	148.6 TWh	159
#12	New York Independent System Operator	130.6 TWh	1,100
#13	Duke Energy Carolinas	111.4 TWh	556
#15	ISO New England	103.1 TWh	1,487
#16	Bonneville Power Administration	82.1 TWh	158
#17	Duke Energy Progress East	65.0 TWh	554
#18	Salt River Project Agricultural Improvement and Power District	58.7 TWh	45
#19	PacifiCorp East	57.3 TWh	204