ISO New England

Balancing Authority Summary Information

ISO New England is ranked #14 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	103.4 TWh
Power Plants	1,561
Utilities	814
Ranked #14 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 \| 57.1% Nuclear \| 24.6% Water \| 6.2% Other Fuel \| 4.5% Wind \| 3.7% Solar \| 1.4% Coal \| 0.4%

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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
Hopkins Hill CSG	Nautilus Solar Solutions	West Greenwich, RI	9 GWh	Oct 2020	Dec 2024	Solar
Hopkinton Phase 2	Vista Solar, Inc.	Ashaway, RI	4 GWh	Aug 2020	Dec 2024	Solar
VPPSA Project 10	Vermont Public Power Supply Authority	Swanton, VT	1 GWh	Apr 2010	Dec 2024	Distillate Fuel Oil
Battle Creek Solar	Ecos Energy LLC	Bennington, VT	3 GWh	Sep 2018	Dec 2024	Solar
Middleton Solar Park	HG Solar Development, LLC	Middleton, MA	7 GWh	May 2018	Dec 2024	Solar
Brookfield Wire Company	Dynamic Energy Solutions, LLC	Brookfield, MA	2 GWh	May 2016	Dec 2024	Solar
Sherman Solar	Ecos Energy LLC	Griswold, CT	1 GWh	Nov 2019	Dec 2024	Solar
Jackson Solar (CT)	Ecos Energy LLC	Griswold, CT	1 GWh	Nov 2019	Dec 2024	Solar
Sydney Solar	Ecos Energy LLC	Hampton, CT	3 GWh	May 2020	Dec 2024	Solar
Dickinson Solar (CT)	Ecos Energy LLC	Hampton, CT	3 GWh	May 2020	Dec 2024	Solar
Becton Canaan	DG Northeast 1, LLC	North Canaan, CT	3 GWh	Feb 2018	Dec 2024	Solar
Norfolk Landfill Solar Project	NJR Clean Energy Ventures Corporation	Norfolk, CT	494 MWh	Nov 2024	Dec 2024	Solar
Plainfield Solar 2	Ecos Energy LLC	Plainfield, CT	1 GWh	Mar 2020	Dec 2024	Solar
Partridge Hill Solar Hybrid	AES Distributed Energy	Charlton, MA	3 GWh	Jun 2020	Dec 2024	Solar
Natick Mall	Natick Mall	Natick, MA	4 GWh	Sep 2018	Dec 2024	Solar
South Windsor Fuel Cell	South Energy Investments LLC	South Windsor, CT	39 GWh	Feb 2020	Dec 2024	Natural Gas
Sutton Solar 2, LLC CSG	Sutton Solar 2, LLC	Sutton, MA	1 GWh	Nov 2020	Dec 2024	Solar
Granby Solar, LLC CSG	Granby Solar, LLC	Granby, MA	6 GWh	Jun 2021	Dec 2024	Solar
Ticket Network South Windsor	EnterSolar	South Windsor, CT	2 GWh	Apr 2018	Dec 2024	Solar
Saratoga Solar IV, LLC	Green Street Power Partners	Rock City Falls, NY	4 GWh	Sep 2023	Dec 2024	Solar
GSPP Gilman, LLC	Green Street Power Partners	Lunenburg, VT	3 GWh	Aug 2018	Dec 2024	Solar
CP Middletown Solar I LLC	Green Street Power Partners	Middletown, CT	2 GWh	Nov 2019	Dec 2024	Solar
CP Middletown Solar II LLC	Green Street Power Partners	Middletown, CT	2 GWh	Nov 2019	Dec 2024	Solar
Kearsarge Amesbury Hybrid	Kearsarge Amesbury LLC	Amesbury, MA	5 GWh	Nov 2019	Dec 2024	Solar
Saratoga Solar III, LLC	Green Street Power Partners	Middle Grove, NY	6 GWh	Nov 2023	Dec 2024	Solar
Hurteau Solar Project Hybrid	AES Distributed Energy	Uxbridge, MA	3 GWh	Feb 2020	Dec 2024	Solar
Alicea Solar Project Hybrid CSG	AES Distributed Energy	Southbridge, MA	4 GWh	Nov 2020	Dec 2024	Solar
McDougle-Mitchell Solar Project Hybrid C	AES Distributed Energy	Charlton, MA	7 GWh	Jul 2020	Dec 2024	Solar
Cycz Solar Project CSG Hybrid	AES Distributed Energy	Spencer, MA	3 GWh	May 2020	Dec 2024	Solar
West A&B Solar Project Hybrid CSG	AES Distributed Energy	Southbridge, MA	5 GWh	Nov 2020	Dec 2024	Solar
Annese Solar Project Hybrid CSG	AES Distributed Energy	Southbridge, MA	8 GWh	Nov 2020	Dec 2024	Solar
Randall Solar Project Hybrid	AES Distributed Energy	Berlin, MA	8 GWh	Jun 2021	Dec 2024	Solar
Amazon BDL3 Solar Project	Solar Star Prime 1 LLC	New Haven, CT	2 GWh	Sep 2019	Dec 2024	Solar
Samoset Solar	Samoset Solar, LLC	Rockport, ME	4 GWh	Jun 2023	Dec 2024	Solar
St. Joseph's Solar, LLC CSG	38 Degrees North, LLC	Charlton, MA	2 GWh	Nov 2017	Dec 2024	Solar
Boutillier Solar, LLC CSG	38 Degrees North, LLC	Leicester, MA	5 GWh	Mar 2018	Dec 2024	Solar
Blair Wire Village Solar, LLC CSG	38 Degrees North, LLC	Spencer, MA	2 GWh	Nov 2017	Dec 2024	Solar
Barton Acres Solar, LLC CSG	38 Degrees North, LLC	Phillipston, MA	2 GWh	Sep 2017	Dec 2024	Solar
Cherry Valley Solar, LLC CSG	38 Degrees North, LLC	Leicester, MA	2 GWh	Oct 2017	Dec 2024	Solar
ISM Solar Dighton 2, LLC CSG	38 Degrees North, LLC	Dighton, MA	4 GWh	Nov 2017	Dec 2024	Solar
Incom Solar, LLC CSG	38 Degrees North, LLC	Charlton, MA	4 GWh	Oct 2017	Dec 2024	Solar
JH Solar, LLC CSG	38 Degrees North, LLC	North Brookfield, MA	2 GWh	Oct 2017	Dec 2024	Solar
Woodchuck Solar, LLC CSG	38 Degrees North, LLC	Spencer, MA	2 GWh	Nov 2017	Dec 2024	Solar
Dudley River 3 Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2024	Solar
Dudley River 2 Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2024	Solar
Dudley River Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Oct 2017	Dec 2024	Solar
Ledeaux Solar, LLC CSG	38 Degrees North, LLC	North Brookfield, MA	1 GWh	Oct 2017	Dec 2024	Solar
Cohasse Solar, LLC CSG	38 Degrees North, LLC	Southbridge, MA	2 GWh	Sep 2017	Dec 2024	Solar
Palombo Solar, LLC CSG	38 Degrees North, LLC	Uxbridge, MA	3 GWh	Nov 2017	Dec 2024	Solar
Palombo B Solar, LLC CSG	38 Degrees North, LLC	Uxbridge, MA	2 GWh	Nov 2017	Dec 2024	Solar
Nutmeg Solar	Nutmeg Solar LLC	Enfield, CT	34 GWh	Nov 2020	Dec 2024	Solar
One Patriot	Bloom Energy	Foxborough, MA	16 GWh	Nov 2019	Dec 2024	Natural Gas
Bowden Solar LLC	38DN Power Fund 1 LLC	Monson, MA	3 GWh	Feb 2019	Dec 2024	Solar
Lakeville Solar	C2 MA Lakeville, LLC	Lakeville, MA	4 GWh	Nov 2018	Dec 2024	Solar
Oak Street Solar	Citizens Enterprises Corporation	Springfield, MA	6 GWh	Nov 2019	Dec 2024	Solar
Cranberry Solar	GWE Cranberry Solar RT, LLC	Middleborough, MA	1 GWh	Nov 2016	Dec 2024	Solar
ISM Solar Cranston CSG	Nautilus Solar Solutions	Cranston, RI	4 GWh	Nov 2020	Dec 2024	Solar
CES Agawam Tuckahoe Solar Hybrid	CES Agawam Tuckahoe Solar LLC	Agawam, MA	7 GWh	Nov 2021	Dec 2024	Solar
GSPP 126 Little Bow Rd S, LLC	Green Street Power Partners	Gouverneur, NY	4 GWh	Nov 2023	Dec 2024	Solar
GSPP 126 Little Bow Rd N, LLC	Green Street Power Partners	Gouverneur, NY	3 GWh	Nov 2023	Dec 2024	Solar
GD Hopkinton Main I, LLC	GD Hopkinton Main I, LLC	Hopkinton, RI	16 GWh	Oct 2020	Dec 2024	Solar
Milo PV - BD Solar 1 LLC	BD Solar 1 LLC	Milo, ME	31 GWh	May 2021	Dec 2024	Solar
Augusta PV - BD Solar Augusta LLC	BD Solar Augusta LLC	Augusta, ME	10 GWh	May 2021	Dec 2024	Solar
Fairfield PV - BD Solar Fairfield LLC	BD Solar Fairfield LLC	Fairfield, ME	8 GWh	May 2021	Dec 2024	Solar
Oxford PV - BD Solar Oxford LLC	BD Solar Oxford LLC	Oxford, ME	15 GWh	May 2021	Dec 2024	Solar
Sunpin Blandford	Blandford Sun, LLC	Southwick, MA	6 GWh	May 2020	Dec 2024	Solar
Erving CSG	Erving Poplar Mountain Solar 1, LLC	Erving, MA	1 GWh	Aug 2020	Dec 2024	Solar
Easthampton CSG	Easthampton Park Solar 1, LLC	Easthampton, MA	4 GWh	Aug 2020	Dec 2024	Solar
GSPP 4643 Twelve Corners Road, LLC	Green Street Power Partners	Auburn, NY	8 GWh	May 2023	Dec 2024	Solar
Amaterasu LLC	AES Distributed Energy	Lancaster, MA	7 GWh	May 2021	Dec 2024	Solar
28 Livermore Hill Road Solar	28 Livermore Hill Road Solar, LLC	Westminster, MA	8 GWh	May 2020	Dec 2024	Solar
Montague Road Solar	Montague Road Solar, LLC	Amherst, MA	5 GWh	Nov 2019	Dec 2024	Solar
Fitchburg Renewables	Fitchburg Renewables, LLC	Fitchburg, MA	6 GWh	Feb 2020	Dec 2024	Solar
SELCO Community Solar	Massachusetts Mun Wholes Electric Co	Shrewsbury, MA	5 GWh	May 2018	Dec 2024	Solar
Palmyra PV - BD Solar Palmyra LLC	BD Solar Palmyra LLC	Palmyra, ME	8 GWh	May 2022	Dec 2024	Solar
BD Solar Hancock LLC	BD Solar Hancock LLC	Augusta, ME	7 GWh	May 2022	Dec 2024	Solar
Winslow PV - BD Solar 2 LLC	BD Solar 2 LLC	Winslow, ME	13 GWh	Jun 2022	Dec 2024	Solar
BD Solar Ellsworth LLC	BD Solar Hancock North LLC	Augusta, ME	6 GWh	May 2022	Dec 2024	Solar
GSPP NESV, LLC	Green Street Power Partners	Attleboro, MA	2 GWh	Feb 2023	Dec 2024	Solar
Pittsfield Solar LLC	Pittsfiled Solar LLC	Pittsfield, ME	17 GWh	Nov 2017	Dec 2024	Solar
North Providence	Captona N.P. LLC	North Providence, RI	3 GWh	Sep 2018	Dec 2024	Solar
Canton	Captona Canton LLC	Canton, MA	6 GWh	Jul 2012	Dec 2024	Solar
Gold Meadow Farms	Captona Lippitt Ave Cranston LLC	Cranston, RI	28 GWh	Apr 2019	Dec 2024	Solar
Ravenbrook	Captona Ravenbrook LLC	Carver, MA	7 GWh	Nov 2013	Dec 2024	Solar
Hudson	Captona Hudson LLC	Hudson, MA	6 GWh	Apr 2017	Dec 2024	Solar
A Street 2	Captona A Street 2 Johnston LLC	Johnston, RI	3 GWh	Nov 2018	Dec 2024	Solar
Berkley	Captona Berkley LLC	Berkley, MA	4 GWh	Mar 2017	Dec 2024	Solar
Little Falls Solar 1	Little Falls Solar 1, LLC	Little Falls, NY	3 GWh	Aug 2020	Dec 2024	Solar
Dynamic Corinth (CSG)	MN8 Energy LLC	Corinth, ME	9 GWh	Sep 2022	Dec 2024	Solar
Wells (ME)	Nautilus Solar Solutions	Wells, ME	6 GWh	Jun 2022	Dec 2024	Solar
Limestone CSG 2 LLC	Limestone CSG 2 LLC	Limestone, ME	62 MWh	Oct 2024	Dec 2024	Solar
Limestone CSG 1 LLC	Limestone CSG 1 LLC	Limestone, ME	5 MWh	Nov 2024	Dec 2024	Solar
Easton CSG 1 LLC	Easton CSG 1 LLC	Easton, ME	5 GWh	Jan 2024	Dec 2024	Solar
1639 RT 29 Solar 2	1639 RT 29 Solar 2, LLC	Gloversville, NY	5 GWh	Nov 2020	Dec 2024	Solar
1639 RT 29 Solar 1	1639 RT 29 Solar 1, LLC	Gloversville, NY	8 GWh	Nov 2020	Dec 2024	Solar
Burlington Solar 1	DG Connecticut III, LLC	Burlington, CT	6 GWh	Jan 2022	Dec 2024	Solar
Webster Solar	Webster Solar, LLC	Webster, MA	1 GWh	Nov 2017	Dec 2024	Solar
LR Wheatfield Solar 1	LR Wheatfield Solar 1, LLC	Wheatfield, NY	8 GWh	Sep 2020	Dec 2024	Solar
Pendleton Solar 1	Pendleton Solar 1, LLC	Lockport, NY	8 GWh	Sep 2020	Dec 2024	Solar
RT405 Westerlo Solar 2	RT405 Westerlo Solar 2, LLC	Albany, NY	8 GWh	Feb 2020	Dec 2024	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	761.1 GWh	4
#25	Dominion Energy South Carolina, Inc.	26.0 TWh	87
#13	Duke Energy Carolinas	111.8 TWh	565
#17	Duke Energy Progress East	65.0 TWh	558
#52	Duke Energy Progress West	4.1 TWh	10
#24	Louisville Gas and Electric Company and Kentucky Utilities Company	33.8 TWh	25
#12	New York Independent System Operator	130.5 TWh	1,191
#1	PJM Interconnection, LLC	858.2 TWh	2,429
#29	South Carolina Public Service Authority	19.6 TWh	34
#60	Southeastern Power Administration	1.5 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	190.5 TWh	2,051
#8	Tennessee Valley Authority	158.7 TWh	204
#10	Florida Power & Light Co.	149.5 TWh	187
#12	New York Independent System Operator	130.5 TWh	1,191
#13	Duke Energy Carolinas	111.8 TWh	565
#14	ISO New England	103.4 TWh	1,561
#16	Bonneville Power Administration	81.4 TWh	163
#17	Duke Energy Progress East	65.0 TWh	558
#18	Salt River Project Agricultural Improvement and Power District	58.8 TWh	48
#19	PacifiCorp East	57.6 TWh	215