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
Athens Ridge	Greenbacker Renewable Energy Corporation	Athens, ME	5 GWh	Feb 2024	Dec 2025	Solar
Ellington - 277 Sadds Mill	Onyx Asset Services Group	Ellington, CT	4 GWh	Feb 2024	Dec 2025	Solar
Skyway Avenue Solar Farm	REA Investments, LLC	Frenchville, ME	3 GWh	Feb 2024	Dec 2025	Solar
Easton CSG 1 LLC	Easton CSG 1 LLC	Easton, ME	6 GWh	Jan 2024	Dec 2025	Solar
Sanford -NY	Nautilus Solar Solutions	Sanford, ME	8 GWh	Jan 2024	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
Derby Fuel Cell	Derby Fuel Cell LLC	Derby, CT	110 GWh	Dec 2023	Dec 2025	Natural Gas
Acushnet MA 1	Navisun LLC	Acushnet, MA	1 GWh	Nov 2023	Dec 2025	Solar
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
BWC Unity Pond LLC	Navisun LLC	Benton, ME	7 GWh	Nov 2023	Dec 2025	Solar
Richmond Hill	Greenbacker Renewable Energy Corporation	Richmond, ME	3 GWh	Nov 2023	Dec 2025	Solar
Robin Hollow Solar	Robin Hollow Solar, LLC	West Greenwich, RI	69 GWh	Nov 2023	May 2026	Solar
Cenergy - Kiger	Luminace Sunbeam Development Holdings, LLC	Embden, ME	2 GWh	Nov 2023	Dec 2025	Solar
ME Novel Lighthouse - Carrabassett	Luminace Sunbeam Development Holdings, LLC	Carrabassett Valley, ME	7 GWh	Nov 2023	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
ME - EDFR - Phase I - Bristol	Overlook Solar Partners, LLC	Bristol, ME	9 GWh	Nov 2023	Dec 2025	Solar
ME-EDFR-Phase I-Embden	Tower Solar Partners, LLC	Embden, ME	8 GWh	Nov 2023	Dec 2025	Solar
Park Solar	Ecos Energy LLC	Woodbridge, CT	1 GWh	Nov 2023	Dec 2025	Solar
Caterpillar Hill	AES Clean Energy	Sedgwick, ME	9 GWh	Nov 2023	Dec 2025	Solar
Farmington	Madison Energy Investments LLC	Farmington, ME	7 GWh	Nov 2023	Dec 2025	Solar
GSPP 126 Little Bow Rd N, LLC	Green Street Power Partners	Gouverneur, NY	7 GWh	Nov 2023	Dec 2025	Solar
GSPP 126 Little Bow Rd S, LLC	Green Street Power Partners	Gouverneur, NY	7 GWh	Nov 2023	Dec 2025	Solar
Saratoga Solar III, LLC	Green Street Power Partners	Middle Grove, NY	5 GWh	Nov 2023	Dec 2025	Solar
Plympton Main Street Solar, LLC	REA Investments, LLC	Plympton, MA	7 GWh	Nov 2023	Dec 2025	Solar
Ava Solar	Ecos Energy LLC	Ware, MA	2 GWh	Nov 2023	Dec 2025	Solar
Gorham Solar 1 (CSG)	CleanCapital Holdings	Gorham, ME	7 GWh	Oct 2023	Dec 2025	Solar
Arctaris Saddleback Solar	Arctaris Saddleback Solar, LLC	Dallas Plantation, ME	7 GWh	Oct 2023	Dec 2025	Solar
Corkwood Solar (CSG)	NextGrid Corkwood, LLC	Howland, ME	6 GWh	Oct 2023	Dec 2025	Solar
Dry Bridge Solar (Brown University)	MN8 Energy LLC	North Kingstown, RI	64 GWh	Oct 2023	May 2026	Solar
ASD Cotuit MA Solar LLC	ASD Cotuit MA Solar LLC	Sandwich, MA	2 GWh	Oct 2023	Dec 2024	Solar
Cenergy - Richards (CSG)	Luminace Sunbeam Development Holdings, LLC	Fairfield, ME	2 GWh	Sep 2023	Dec 2025	Solar
Pittsfield Solar (N. Main St)	Maine DG Solar Pittsfield, LLC	Pittsfield, ME	8 GWh	Sep 2023	Dec 2025	Solar
Standish	Nautilus Solar Solutions	Standish, ME	7 GWh	Sep 2023	Dec 2025	Solar
Sabattus SB01	Nautilus Solar Solutions	Sabattus, ME	8 GWh	Sep 2023	Dec 2025	Solar
Saratoga Solar IV, LLC	Green Street Power Partners	Rock City Falls, NY	5 GWh	Sep 2023	Dec 2025	Solar
MEVS Clark LLC	MEVS Clark LLC	Bingham, ME	6 GWh	Sep 2023	Dec 2025	Solar
Howard Lane Solar	NJR Clean Energy Ventures Corporation	Glocester, RI	2 GWh	Aug 2023	Dec 2025	Solar
Broadway Solar (CSG)	NextGrid Bitterbush, LLC	Bangor, ME	6 GWh	Aug 2023	Dec 2025	Solar
5 Berry	Madison Energy Investments LLC	Plainsville, MA	8 GWh	Aug 2023	Dec 2025	Solar
ME-EDFR-Phase I-Woolwich	Green Mile Solar, LLC	Woolwich, ME	8 GWh	Aug 2023	Dec 2025	Solar
1 Commercial	Madison Energy Investments LLC	Sharon, MA	622 MWh	Aug 2023	Oct 2025	Solar
Bates College Skowhegan	Westbound Solar 3, LLC	Skowhegan, ME	8 GWh	Aug 2023	Dec 2025	Solar
Bilton Solar	Ecos Energy LLC	Somers, CT	3 GWh	Aug 2023	Dec 2025	Solar
Caribou	Altus Power America Management, LLC	Caribou, ME	6 GWh	Jul 2023	Dec 2025	Solar
Gray Solar	Ecos Energy LLC	Rutland, VT	3 GWh	Jul 2023	Dec 2025	Solar
Fort Fairfield	Standard Solar	Fort Fairfield, ME	8 GWh	Jul 2023	Dec 2025	Solar
Dynamic Energy CT STAG	Milford Pepes Farm Road Solar LLC	Milford, CT	2 GWh	Jul 2023	Dec 2024	Solar
Niagara Depot Solar	Niagara Depot Solar, LLC	Niagara Falls, NY	5 GWh	Jun 2023	Dec 2025	Solar
3Colton	Madison Energy Holdings LLC	Millbury, MA	5 GWh	Jun 2023	Dec 2025	Solar
Cenergy - Waterville (CSG)	Luminace Sunbeam Development Holdings, LLC	Waterville, ME	9 GWh	Jun 2023	Dec 2025	Solar
Cenergy - Wiscasset (CSG)	Luminace Sunbeam Development Holdings, LLC	Wiscasset, ME	8 GWh	Jun 2023	Dec 2025	Solar
MEVS DOT 109	MEVS DOT, LLC	Augusta, ME	4 GWh	Jun 2023	Dec 2025	Solar
Sandwich	LSE Ophiuchus LLC	Sandwich, MA	5 GWh	Jun 2023	Dec 2024	Solar
118 Echo	Madison Energy Investments LLC	Mashpee, MA	814 MWh	Jun 2023	Dec 2025	Solar
Waterboro	Madison Energy Investments LLC	East Waterboro, ME	3 GWh	Jun 2023	Dec 2024	Solar
Samoset Solar	Samoset Solar, LLC	Rockport, ME	4 GWh	Jun 2023	Dec 2025	Solar
Douglas Pike Solar, LLC	Navisun LLC	Burrillville, RI	3 GWh	May 2023	Dec 2025	Solar
GSPP 4643 Twelve Corners Road, LLC	Green Street Power Partners	Auburn, NY	8 GWh	May 2023	Dec 2025	Solar
Nutting Ridge Solar, LLC	REA Investments, LLC	Otisfield, ME	7 GWh	May 2023	Dec 2025	Solar
Kearsarge 100 Sohier Rd	Kearsarge Beverly LLC	Beverly, MA	3 GWh	Apr 2023	Dec 2025	Solar
Treasure Lane Solar 1	AES Clean Energy	Manchester, ME	8 GWh	Apr 2023	Dec 2025	Solar
Loring	Altus Power America Management, LLC	Limestone, ME	8 GWh	Apr 2023	Dec 2025	Solar
ME Novel Lighthouse - Front St. Solar CS	Luminace Sunbeam Development Holdings, LLC	Skowhegan, ME	5 GWh	Apr 2023	Dec 2025	Solar
Sidney	Nautilus Solar Solutions	Sidney, ME	2 GWh	Apr 2023	Dec 2025	Solar
BWC Beech Ridge Brook, LLC	Navisun LLC	Scarborough, ME	8 GWh	Apr 2023	Dec 2025	Solar
Fryeburg	Nautilus Solar Solutions	Fryeburg, ME	9 GWh	Apr 2023	Dec 2025	Solar
GSPP 7024 Fox Rd, LLC	Green Street Power Partners	Marcy, NY	6 GWh	Apr 2023	Dec 2025	Solar
Kearsarge Smithfield LLC	Kearsarge Smithfield LLC	Burrillville, RI	14 GWh	Mar 2023	Dec 2025	Solar
GSPP NESV, LLC	Green Street Power Partners	Attleboro, MA	2 GWh	Feb 2023	Dec 2025	Solar
Overlook	Westbound Solar 3, LLC	Westminster, MA	7 GWh	Feb 2023	Dec 2025	Solar
Broadhead	Madison Energy Investments LLC	Waterville, ME	7 GWh	Feb 2023	Dec 2025	Solar
Kearsarge Upper Union	Kearsarge Upper Union LLC	Franklin, MA	2 GWh	Feb 2023	Dec 2025	Solar
Norton	Madison Energy Holdings LLC	Norton, MA	2 GWh	Feb 2023	Dec 2025	Solar
MA CS Uxbridge Community Solar	MA CS Uxbridge, LLC	Uxbridge, MA	7 GWh	Jan 2023	Dec 2025	Solar
Old Middleboro Road Solar	Agilitas Energy, Inc.	Rochester, MA	8 GWh	Dec 2022	Dec 2025	Solar
Subase Microgrid Project	Connecticut Mun Elec Engy Coop	Groton, CT	30 GWh	Nov 2022	Dec 2025	Natural Gas
Naval Sub Base New London Fuel Cell	Groton Station Fuel Cell, LLC	Groton, CT	44 GWh	Nov 2022	Dec 2024	Natural Gas
Kearsarge West Shore Solar LLC	Kearsarge West Shore Solar LLC	Portsmouth, RI	9 GWh	Nov 2022	Dec 2025	Solar
Water Street Solar	AES Distributed Energy	Randolph, ME	7 GWh	Nov 2022	Dec 2025	Solar
Huxley Solar	Agilitas Energy, Inc.	Ludlow, MA	10 GWh	Nov 2022	Dec 2025	Solar
Emerald Marshfields, LLC	Emerald Marshfield, LLC	Marshfield, MA	2 GWh	Nov 2022	Dec 2025	Solar
White Rock Road LLC	White Rock Road LLC	Westerly, RI	11 GWh	Nov 2022	Dec 2025	Solar
Barefoot Solar	Madison Energy Investments LLC	Fairfield, ME	6 GWh	Nov 2022	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
Town House	Nautilus Solar Solutions	Chelsea, ME	8 GWh	Nov 2022	Dec 2025	Solar
Freetown MA 1, LLC	Navisun LLC	Freetown, MA	2 GWh	Nov 2022	Dec 2025	Solar
Mainely Solar (Wyman Hill Solar LLC)	Wyman Hill Solar, LLC	Rumford, ME	6 GWh	Nov 2022	Dec 2025	Solar
Quarry	Nautilus Solar Solutions	North Berwick, ME	10 GWh	Nov 2022	Dec 2025	Solar
665 Scenic Highway	Madison Energy Investments LLC	Bourne, MA	89 MWh	Nov 2022	Dec 2025	Solar
Plympton Lake Street Solar	REA Investments, LLC	Plympton, MA	2 GWh	Nov 2022	Dec 2025	Solar
Route 3 China Solar, LLC	REA Investments, LLC	China, ME	8 GWh	Nov 2022	Dec 2025	Solar
15 Lincoln	Madison Energy Investments LLC	Norfolk, MA	1 GWh	Nov 2022	Dec 2025	Solar
ER Sand Hill	Altus Power America Management, LLC	Castleton, VT	3 GWh	Oct 2022	Dec 2025	Solar
Norton Powerhouse 2	Norton Powerhouse 2	Worcester, MA	29 GWh	Oct 2022	Dec 2025	Natural Gas
Beacon Solar, LLC	Agilitas Energy, Inc.	Easthampton, MA	8 GWh	Oct 2022	Dec 2025	Solar
Niagara Bottling - Bloomfield	Westbound Solar 3, LLC	Bloomfield, CT	4 GWh	Oct 2022	Dec 2025	Solar
SCS Harpswell 012903 Brunswick, LLC	Arevon Energy, Inc.	Brunswick, ME	7 GWh	Oct 2022	Dec 2025	Solar
French King Solar LLC	French King Solar LLC	Erving, MA	8 GWh	Oct 2022	Dec 2025	Solar
North Bridgton	Nautilus Solar Solutions	Oakland, ME	8 GWh	Oct 2022	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