ISO New England

Balancing Authority Summary Information

ISO New England is ranked #15 out of 64 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	Jul 2026
Annual Generation	111.1 TWh
Power Plants	1,629
Utilities	833
Ranked #15 out of 64 in terms of net annual generation
Ranked #10 out of 53 in terms of annual generation from natural gas
Power Plant Types	Natural Gas \| 54.9% Nuclear \| 25% Wind \| 5.1% Water \| 4.5% Other Fuel \| 4.4% Solar \| 1.6% Coal \| 0.1%

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Daily Net Generation for ISO New England for the past 3 Years

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Plant Name	Utility	Location	Annual Generation	Plant Date	Last Update	Fuel Types
Little Falls Solar 1	Little Falls Solar 1, LLC	Little Falls, NY	3 GWh	Aug 2020	Dec 2025	Solar
Burlington Solar 1	DG Connecticut III, LLC	Burlington, CT	6 GWh	Jan 2022	Dec 2025	Solar
1639 RT 29 Solar 1	1639 RT 29 Solar 1, LLC	Gloversville, NY	7 GWh	Nov 2020	Dec 2025	Solar
1639 RT 29 Solar 2	1639 RT 29 Solar 2, LLC	Gloversville, NY	4 GWh	Nov 2020	Dec 2025	Solar
Easton CSG 1 LLC	Easton CSG 1 LLC	Easton, ME	6 GWh	Jan 2024	Dec 2025	Solar
Limestone CSG 1 LLC	Limestone CSG 1 LLC	Limestone, ME	6 GWh	Nov 2024	Dec 2025	Solar
Limestone CSG 2 LLC	Limestone CSG 2 LLC	Limestone, ME	5 GWh	Oct 2024	Dec 2025	Solar
Dynamic Corinth (CSG)	MN8 Energy LLC	Corinth, ME	10 GWh	Sep 2022	Dec 2025	Solar
Dynamic Madison (CSG)	MN8 Energy LLC	Madison, ME	10 GWh	Jul 2022	Dec 2025	Solar
Kearsarge Smithfield LLC	Kearsarge Smithfield LLC	Burrillville, RI	14 GWh	Mar 2023	Dec 2025	Solar
Kearsarge 100 Sohier Rd	Kearsarge Beverly LLC	Beverly, MA	3 GWh	Apr 2023	Dec 2025	Solar
Kearsarge West Shore Solar LLC	Kearsarge West Shore Solar LLC	Portsmouth, RI	9 GWh	Nov 2022	Dec 2025	Solar
Harmony Solar (ME)	Maine DG Solar Harmony, LLC	Harmony, ME	9 GWh	Jul 2022	Dec 2025	Solar
Norton Powerhouse 2	Norton Powerhouse 2	Worcester, MA	29 GWh	Oct 2022	Dec 2025	Natural Gas
Sugar Hill Solar 1	Sugar Hill Solar 1, LLC	Clifton Park, NY	8 GWh	Nov 2020	Dec 2025	Solar
3104 Batavia Solar	3104 Batavia Solar, LLC	Batavia, NY	5 GWh	Feb 2021	Dec 2025	Solar
3232 Batavia Solar	3232 Batavia Solar, LLC	Batavia, NY	7 GWh	Feb 2021	Dec 2025	Solar
Niagara Depot Solar	Niagara Depot Solar, LLC	Niagara Falls, NY	5 GWh	Jun 2023	Dec 2025	Solar
Arctaris Saddleback Solar	Arctaris Saddleback Solar, LLC	Dallas Plantation, ME	7 GWh	Oct 2023	Dec 2025	Solar
TPE RI WA2 Solar	TPE RI WA2, LLC	Warren, RI	6 GWh	May 2024	Dec 2025	Solar
TPE RI WA1 Solar	TPE RI WA1, LLC	Warren, RI	6 GWh	May 2024	Dec 2025	Solar
Generate Colchester Fuel Cells, LLC	Generate Colchester Fuel Cells, LLC	Colchester, CT	72 GWh	Sep 2021	Dec 2025	Natural Gas
Marlborough Solar	Marlborough Solar, LLC	Milton, NY	3 GWh	Feb 2021	Dec 2025	Solar
Blacksmith Road Solar 1	Blacksmith Road Solar 1, LLC	Falmouth, MA	9 GWh	Nov 2021	Dec 2025	Solar
Electric Avenue Lunenburg Solar 1	Electric Avenue Lunenburg Solar 1, LLC	Lunenburg, MA	2 GWh	Nov 2021	Dec 2025	Solar
Harbor Road Solar 1	Harbor Road Solar 1, LLC	Cheshire, MA	3 GWh	Nov 2021	Dec 2025	Solar
Lenox Renewables	Lenox Renewables, LLC	Canastota, NY	6 GWh	Aug 2021	Dec 2025	Solar
Milo CSG	Milo CSG, LLC	Milo, ME	7 GWh	Jan 2022	Dec 2025	Solar
Livermore Falls CSG	Livermore Falls CSG, LLC	Livermore Falls, ME	4 GWh	Apr 2022	Dec 2025	Solar
Water Street Solar	AES Distributed Energy	Randolph, ME	7 GWh	Nov 2022	Dec 2025	Solar
CoreSite - Somerville	Bloom Energy	Somerville, MA	28 GWh	Aug 2020	Dec 2025	Natural Gas
Connecticut College	Bloom Energy	New London, CT	10 GWh	Aug 2019	Dec 2025	Natural Gas
Pleasant Street	Greenbacker Renewable Energy Corporation	Wilton, ME	5 GWh	Nov 2023	Dec 2025	Solar
South Street - Middlebury	Greenbacker Renewable Energy Corporation	Middlebury, VT	9 GWh	Nov 2023	Dec 2025	Solar
Treasure Lane Solar 1	AES Clean Energy	Manchester, ME	8 GWh	Apr 2023	Dec 2025	Solar
Huxley Solar	Agilitas Energy, Inc.	Ludlow, MA	10 GWh	Nov 2022	Dec 2025	Solar
Beacon Solar, LLC	Agilitas Energy, Inc.	Easthampton, MA	8 GWh	Oct 2022	Dec 2025	Solar
Town of Amherst Solar	Agilitas Energy, Inc.	Amherst, MA	4 GWh	Jul 2022	Dec 2025	Solar
Niagara Bottling - Bloomfield	Westbound Solar 3, LLC	Bloomfield, CT	4 GWh	Oct 2022	Dec 2025	Solar
Lewiston Junction Road Solar	NextGrid Peppertree, LLC	Poland, ME	7 GWh	Dec 2021	Dec 2025	Solar
Webb Road Solar	NextGrid Mastic, LLC	Waterville, ME	5 GWh	Aug 2022	Dec 2025	Solar
Merrill Road Solar	NextGrid Mangrove, LLC	Lewiston, ME	6 GWh	Feb 2022	Dec 2025	Solar
Lisbon Street Solar	NextGrid Cliffrose, LLC	Lewiston, ME	3 GWh	Mar 2022	Dec 2025	Solar
Silver Maple	WEB Silver Maple Wind LLC	Clifton, ME	64 GWh	Sep 2022	Dec 2025	Wind
Brimfield	WEB Brimfield Solar LLC	Brimfield, MA	3 GWh	Nov 2021	Dec 2025	Solar
WEB Brookfield	WEB Brookfield Solar LLC	Brookfield, MA	6 GWh	Nov 2021	Dec 2025	Solar
3Colton	Madison Energy Holdings LLC	Millbury, MA	5 GWh	Jun 2023	Dec 2025	Solar
BWC Unity Pond LLC	Navisun LLC	Benton, ME	7 GWh	Nov 2023	Dec 2025	Solar
SCS Harpswell 012903 Brunswick, LLC	Arevon Energy, Inc.	Brunswick, ME	7 GWh	Oct 2022	Dec 2025	Solar
Caribou	Altus Power America Management, LLC	Caribou, ME	6 GWh	Jul 2023	Dec 2025	Solar
Loring	Altus Power America Management, LLC	Limestone, ME	8 GWh	Apr 2023	Dec 2025	Solar
Manheim New England	Cox Enterprises	North Dighton, MA	2 GWh	Nov 2012	Dec 2025	Solar
Emerald Marshfields, LLC	Emerald Marshfield, LLC	Marshfield, MA	2 GWh	Nov 2022	Dec 2025	Solar
Emerald Gardens PKI, LLC	Emerald Gardens PKI, LLC	Shelton, CT	2 GWh	Sep 2021	Dec 2025	Solar
Westport Stone & Sand Solar (CSG)	AES Clean Energy	Westport, MA	7 GWh	Feb 2024	Dec 2025	Solar
Yale New Haven - New London	Bloom Energy	New London, CT	14 GWh	Aug 2022	Dec 2025	Natural Gas
MA Blackstone	Catalyze Blackstone 83 Federal Street Microgrid, LLC	Blackstone, MA	7 GWh	Jun 2022	Dec 2025	Solar
ME Augusta 13 York Farm Rd Solar	SOL ME Augusta 13 York Farm, LLC	Augusta, ME	1 GWh	Dec 2023	Dec 2025	Solar
White Rock Road LLC	White Rock Road LLC	Westerly, RI	11 GWh	Nov 2022	Dec 2025	Solar
French King Solar LLC	French King Solar LLC	Erving, MA	8 GWh	Oct 2022	Dec 2025	Solar
Richmond Hill	Greenbacker Renewable Energy Corporation	Richmond, ME	3 GWh	Nov 2023	Dec 2025	Solar
Athens Ridge	Greenbacker Renewable Energy Corporation	Athens, ME	5 GWh	Feb 2024	Dec 2025	Solar
ME Novel Lighthouse - Front St. Solar CS	Luminace Sunbeam Development Holdings, LLC	Skowhegan, ME	5 GWh	Apr 2023	Dec 2025	Solar
Gray Solar	Ecos Energy LLC	Rutland, VT	3 GWh	Jul 2023	Dec 2025	Solar
Cenergy - Pulk	BAP Grounded 2 LLC	Sabattus, ME	8 GWh	Nov 2024	Dec 2025	Solar
Cenergy - Richards (CSG)	Luminace Sunbeam Development Holdings, LLC	Fairfield, ME	2 GWh	Sep 2023	Dec 2025	Solar
Cenergy - Waterville (CSG)	Luminace Sunbeam Development Holdings, LLC	Waterville, ME	9 GWh	Jun 2023	Dec 2025	Solar
Cenergy - Kiger	Luminace Sunbeam Development Holdings, LLC	Embden, ME	2 GWh	Nov 2023	Dec 2025	Solar
Cenergy - Wiscasset (CSG)	Luminace Sunbeam Development Holdings, LLC	Wiscasset, ME	8 GWh	Jun 2023	Dec 2025	Solar
Barefoot Solar	Madison Energy Investments LLC	Fairfield, ME	6 GWh	Nov 2022	Dec 2025	Solar
Pittsfield Solar (N. Main St)	Maine DG Solar Pittsfield, LLC	Pittsfield, ME	8 GWh	Sep 2023	Dec 2025	Solar
ME Novel Lighthouse - Penobscot CSG	Luminace Sunbeam Development Holdings, LLC	Patten, ME	4 GWh	Aug 2024	Dec 2025	Solar
ME Novel Lighthouse - Carrabassett	Luminace Sunbeam Development Holdings, LLC	Carrabassett Valley, ME	7 GWh	Nov 2023	Dec 2025	Solar
Dynamic - Wales Leeds Junction Road (CSG)	Altus Power America Management, LLC	Wales, ME	7 GWh	Oct 2024	Dec 2025	Solar
Dynamic - Norridgewock Martin Stream (CSG)	Nautilus Solar Solutions	Norridgewock, ME	9 GWh	Oct 2024	Dec 2025	Solar
Dynamic - Leeds Solar (CSG)	Nautilus Solar Solutions	Leeds, ME	9 GWh	Oct 2024	Dec 2025	Solar
Dynamic - Gray Solar	Altus Power America Management, LLC	Gray, ME	5 GWh	Nov 2024	Dec 2025	Solar
Dynamic - Exeter Solar CSG	Altus Power America Management, LLC	Exeter, ME	6 GWh	Aug 2024	Dec 2025	Solar
Dynamic - Enfield Hammett Road CSG	Altus Power America Management, LLC	Enfield, ME	9 GWh	Aug 2024	Dec 2025	Solar
Dynamic - Glenburn Broadway One (CSG)	Altus Power America Management, LLC	Glenburn, ME	6 GWh	Oct 2024	Dec 2025	Solar
15 Glen Harris RD	ME Sandy River LLC	New Sharon, ME	5 GWh	May 2024	Dec 2025	Solar
Fort Fairfield	Standard Solar	Fort Fairfield, ME	8 GWh	Jul 2023	Dec 2025	Solar
Broadway Solar (CSG)	NextGrid Bitterbush, LLC	Bangor, ME	6 GWh	Aug 2023	Dec 2025	Solar
Corkwood Solar (CSG)	NextGrid Corkwood, LLC	Howland, ME	6 GWh	Oct 2023	Dec 2025	Solar
GD West Greenwich Nooseneck I, LLC	GD West Greenwich Nooseneck I, LLC	West Greenwich, RI	31 GWh	Nov 2022	Dec 2025	Solar
Rhode Island Solar Renewable Energy IV,	Rhode Island Solar Renewable Energy IV, LLC	Tiverton, RI	18 GWh	Nov 2023	Dec 2025	Solar
Ring Road	Greenbacker Renewable Energy Corporation	Plympton, MA	2 GWh	May 2025	Dec 2025	Solar
McAllister Landfill	Solar Breakers LLC	Portsmouth, RI	2 GWh	Sep 2022	Dec 2025	Solar
Tank Farm 4	Solar Breakers LLC	Portsmouth, RI	13 GWh	Sep 2022	Dec 2025	Solar
Ashland Solar	Citizens Enterprises Corporation	Ashland, MA	6 GWh	Nov 2019	Dec 2025	Solar
Falmouth 2 Solar	Citizens Enterprises Corporation	Falmouth, MA	3 GWh	Aug 2021	Dec 2025	Solar
Oxford Solar	Citizens Enterprises Corporation	Oxford, MA	5 GWh	Jan 2020	Dec 2025	Solar
Spencer Solar MA	Citizens Enterprises Corporation	Spencer, MA	4 GWh	Feb 2020	Dec 2025	Solar
Mars Hill	Greenbacker Renewable Energy Corporation	Mars Hill, ME	4 GWh	Oct 2024	Dec 2025	Solar
Our Katahdin	Greenbacker Renewable Energy Corporation	Millenocket, ME	6 GWh	Nov 2024	Dec 2025	Solar
Pine Hill Westport	Greenbacker Renewable Energy Corporation	Westport, MA	3 GWh	May 2025	Dec 2025	Solar
ME - EDFR - Phase I - Bristol	Overlook Solar Partners, LLC	Bristol, ME	9 GWh	Nov 2023	Dec 2025	Solar
5 Berry	Madison Energy Investments LLC	Plainsville, MA	8 GWh	Aug 2023	Dec 2025	Solar
Nationwide	Nationwide Solar Energy LLC	Lancaster, MA	5 GWh	May 2021	Dec 2025	Solar
Upland	Greenbacker Renewable Energy Corporation	Plympton, MA	3 GWh	May 2025	Dec 2025	Solar

Surrounding Balancing Authorities

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#61	Alcoa Power Generating, Inc. - Yadkin Division	442.5 GWh	4
#24	Dominion Energy South Carolina, Inc.	25.3 TWh	83
#13	Duke Energy Carolinas	112.6 TWh	577
#17	Duke Energy Progress East	64.5 TWh	565
#50	Duke Energy Progress West	4.5 TWh	15
#23	Louisville Gas and Electric Company and Kentucky Utilities Company	33.9 TWh	25
#12	New York Independent System Operator	134.3 TWh	1,299
#1	PJM Interconnection, LLC	882.8 TWh	2,652
#31	South Carolina Public Service Authority	18.5 TWh	35
#59	Southeastern Power Administration	1.3 TWh	11

Balancing Authorities with Similar Net Generation

Rank	Balancing Authority	Annual Net Generation	# Power Plants
#7	California Independent System Operator	169.4 TWh	2,135
#9	Tennessee Valley Authority	163.4 TWh	207
#10	Florida Power & Light Co.	152.2 TWh	187
#12	New York Independent System Operator	134.3 TWh	1,299
#13	Duke Energy Carolinas	112.6 TWh	577
#15	ISO New England	111.1 TWh	1,629
#16	Bonneville Power Administration	91.6 TWh	167
#17	Duke Energy Progress East	64.5 TWh	565
#18	PacifiCorp East	60.9 TWh	222
#19	Salt River Project Agricultural Improvement and Power District	60.3 TWh	49