| 7 Bridges Solar, LLC | 7 Bridges Solar, LLC | Generation Owner | Voting Member |
| AC Energy, LLC | AC Energy, LLC | Other Supplier | Voting Member |
| ACT Commodities Inc. | Not applicable | Other Supplier | Voting Member |
| AEP Appalachian Transmission Company, Inc. | Appalachian Power Company | Transmission Owner | Affiliate Member |
| AEP Energy Partners, Inc. | Appalachian Power Company | Transmission Owner | Affiliate Member |
| AEP Energy, Inc. | Appalachian Power Company | Transmission Owner | Affiliate Member |
| AEP Indiana Michigan Transmission Company, Inc. | Appalachian Power Company | Transmission Owner | Affiliate Member |
| AEP Kentucky Transmission Company, Inc. | Appalachian Power Company | Transmission Owner | Affiliate Member |
| AEP Ohio Transmission Company, Inc. | Appalachian Power Company | Transmission Owner | Affiliate Member |
| AEP Retail Energy Partners, LLC | Appalachian Power Company | Transmission Owner | Affiliate Member |
| AEP West Virginia Transmission Company, Inc. | Appalachian Power Company | Transmission Owner | Affiliate Member |
| AES ES Holdings, LLC | Dayton Power & Light Company (The) | Generation Owner | Affiliate Member |
| AES Energy Storage, LLC | Dayton Power & Light Company (The) | Generation Owner | Affiliate Member |
| AES Integrated Energy, LLC | Dayton Power & Light Company (The) | Other Supplier | Affiliate Member |
| AES Laurel Mountain, LLC | Dayton Power & Light Company (The) | Generation Owner | Affiliate Member |
| AES Ohio Generation, LLC | Dayton Power & Light Company (The) | Generation Owner | Affiliate Member |
| AES Solutions Management, LLC | Dayton Power & Light Company (The) | Other Supplier | Affiliate Member |
| AESI-US, Inc. | Not applicable | None | Associate |
| AEUG Madison Solar, LLC | Acciona Energy North America Corporation | Other Supplier | Affiliate Member |
| AEUG Union Solar, LLC | Acciona Energy North America Corporation | Other Supplier | Affiliate Member |
| ALLETE, Inc. d/b/a Minnesota Power | ALLETE, Inc. d/b/a Minnesota Power | Other Supplier | Voting Member |
| AM Trading Solutions, LLC | Not applicable | Other Supplier | Voting Member |
| AMP Transmission, LLC | American Municipal Power, Inc. | Transmission Owner | Affiliate Member |
| AP Gas & Electric (IL), LLC | AP Gas and Electric (PA), LLC | Other Supplier | Affiliate Member |
| AP Gas & Electric (MD), LLC | AP Gas and Electric (PA), LLC | Other Supplier | Affiliate Member |
| AP Gas & Electric (NJ), LLC | AP Gas and Electric (PA), LLC | Other Supplier | Affiliate Member |
| AP Gas & Electric (OH), LLC | AP Gas and Electric (PA), LLC | Other Supplier | Affiliate Member |
| AP Gas and Electric (PA), LLC | AP Gas and Electric (PA), LLC | Other Supplier | Voting Member |
| APN Starfirst, LP | American PowerNet Management, L.P. | End-Use Customer | Affiliate Member |
| ATNV Energy, LP | Not applicable | Other Supplier | Voting Member |
| AXPO U.S. LLC | Not applicable | Other Supplier | Voting Member |
| Acciona Energy North America Corporation | Acciona Energy North America Corporation | Generation Owner | Voting Member |
| Aesir Power, LLC | Not applicable | Other Supplier | Voting Member |
| Affirmed Energy LLC | Affirmed Energy LLC | Other Supplier | Voting Member |
| Aggressive Energy LLC | Not applicable | Other Supplier | Voting Member |
| Agile Energy Trading LLC | Automated Algorithms, LLC | Other Supplier | Affiliate Member |
| Agway Energy Services, LLC | Not applicable | Other Supplier | Voting Member |
| Air Products & Chemicals, Inc. | Not applicable | End-Use Customer | Voting Member |
| Alabama Power Company | Southern Power Company | Other Supplier | Affiliate Member |
| Alameda Solar I, LLC | Open Road Renewables, LLC | Other Supplier | Affiliate Member |
| Albertsons Companies, Inc. | Not applicable | None | Associate |
| Alegria Fund, LP | Alegria Fund, LP | Other Supplier | Voting Member |
| Algonquin Energy Services, Inc. | Algonquin Energy Services, Inc. | Generation Owner | Voting Member |
| All American Power and Gas, LLC | Not applicable | Other Supplier | Voting Member |
| All Choice Energy MidAmerica LLC dba Raava Energy | Not applicable | Other Supplier | Voting Member |
| Allegheny Electric Cooperative, Inc. | Not applicable | Electric Distributor | Voting Member |
| Allegheny Energy Supply Company, L.L.C. | Monongahela Power Company d/b/a Allegheny Power | Generation Owner | Affiliate Member |
| Alliant Energy Corporate Services, Inc. | Alliant Energy Corporate Services, Inc. | Other Supplier | Voting Member |
| Alliant Energy Resources LLC | Alliant Energy Corporate Services, Inc. | Other Supplier | Affiliate Member |
| Alpaca Energy LLC | Tenaska Power Services Co. | Generation Owner | Affiliate Member |
| Alpha Gas and Electric, LLC | Not applicable | Other Supplier | Voting Member |
| Alphataraxia Palladium LLC | Not applicable | Other Supplier | Voting Member |
| Alternative Transmission Inc. | Renewable Energy Aggregators Inc. | Other Supplier | Affiliate Member |
| Altop Energy Trading LLC | Altop Energy Trading LLC | Other Supplier | Voting Member |
| Altop Energy Trading MidAtlantic LLC | Altop Energy Trading LLC | Other Supplier | Affiliate Member |
| Altro Power LLC | Altro Power LLC | Other Supplier | Voting Member |
| Altrock LLC | Altrock LLC | Other Supplier | Voting Member |
| Altus Power, LLC | Altus Power, LLC | Generation Owner | Voting Member |
| Amazand, LLC | Not applicable | Other Supplier | Voting Member |
| Amazon Energy LLC | Not applicable | Other Supplier | Voting Member |
| Ambit Northeast, LLC | Dynegy Marketing and Trade, LLC | Other Supplier | Affiliate Member |
| American Municipal Power, Inc. | American Municipal Power, Inc. | Electric Distributor | Voting Member |
| American Power & Gas of DC, LLC | American Power & Gas of Pennsylvania LLC | Other Supplier | Affiliate Member |
| American Power & Gas of IL, LLC | American Power & Gas of Pennsylvania LLC | Other Supplier | Affiliate Member |
| American Power & Gas of MD, LLC | American Power & Gas of Pennsylvania LLC | Other Supplier | Affiliate Member |
| American Power & Gas of NJ, LLC | American Power & Gas of Pennsylvania LLC | Other Supplier | Affiliate Member |
| American Power & Gas of Ohio, LLC | American Power & Gas of Pennsylvania LLC | Other Supplier | Affiliate Member |
| American Power & Gas of Pennsylvania LLC | American Power & Gas of Pennsylvania LLC | Other Supplier | Voting Member |
| American PowerNet Management, L.P. | American PowerNet Management, L.P. | End-Use Customer | Voting Member |
| American Transmission Systems, Inc. | Monongahela Power Company d/b/a Allegheny Power | Transmission Owner | Affiliate Member |
| Ames Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Amperon Holdings, Inc. | Not applicable | None | Associate |
| Anbaric Development Partners, LLC | Not applicable | Other Supplier | Voting Member |
| Apex Clean Energy, Inc. | Not applicable | None | Associate |
| Apogee Energy Trading LLC | Not applicable | Other Supplier | Voting Member |
| Appalachian Power Company | Appalachian Power Company | Transmission Owner | Voting Member |
| Appian Way Energy Partners MidAtlantic, LLC | Not applicable | Other Supplier | Voting Member |
| Approved Energy II LLC | Not applicable | Other Supplier | Voting Member |
| Aquenergy Systems, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Archer Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Armada Power, LLC | Not applicable | Other Supplier | Voting Member |
| Armenia Mountain Wind, LLC | ALLETE, Inc. d/b/a Minnesota Power | Generation Owner | Affiliate Member |
| Aspen Gen Funding, LLC | Rolling Hills Generating, LLC | Other Supplier | Affiliate Member |
| Aspen Generating, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Aspire Power Ventures, LP | Not applicable | Other Supplier | Voting Member |
| Associated Electric Cooperative, Inc. | Not applicable | Other Supplier | Voting Member |
| Astral Energy LLC | Not applicable | Other Supplier | Voting Member |
| Atlantic City Electric Company | Exelon Business Services Company, LLC | Electric Distributor | Affiliate Member |
| Atlantic Energy MD, LLC | Not applicable | Other Supplier | Voting Member |
| Atmospheric G2, LLC | Not applicable | None | Associate |
| Aurora Energy Research LLC | Not applicable | None | Associate |
| Aurora Trading Company, LLC | Not applicable | Other Supplier | Voting Member |
| Automated Algorithms, LLC | Automated Algorithms, LLC | Other Supplier | Voting Member |
| Avangrid Networks, Inc. | Avangrid Renewables, LLC | Other Supplier | Affiliate Member |
| Avangrid Renewables, LLC | Avangrid Renewables, LLC | Generation Owner | Voting Member |
| BIF II Safe Harbor Holdings, LLC | Brookfield Renewable Trading and Marketing LP | Generation Owner | Affiliate Member |
| BIF III Holtwood LLC | Brookfield Renewable Trading and Marketing LP | Generation Owner | Affiliate Member |
| BITH Solar I, LLC | Not applicable | Other Supplier | Voting Member |
| BJ Energy, LLC | BJ Energy, LLC | Other Supplier | Voting Member |
| BP Alternative Energy North America Inc. | BP Energy Company | Generation Owner | Affiliate Member |
| BP Energy Company | BP Energy Company | Other Supplier | Voting Member |
| BP Energy Holding Company LLC | BP Energy Company | Other Supplier | Affiliate Member |
| BP Energy Retail Company LLC | BP Energy Company | Other Supplier | Affiliate Member |
| BREG Aggregator LLC | Brookfield Renewable Trading and Marketing LP | Generation Owner | Affiliate Member |
| BTU Analytics, LLC | Not applicable | None | Associate |
| Baltimore Gas and Electric Company | Exelon Business Services Company, LLC | Transmission Owner | Affiliate Member |
| Baltimore Power Company LLC | Not applicable | Other Supplier | Voting Member |
| Balyasny Asset Management L.P. | Not applicable | None | Associate |
| Bancroft Energy LLC | Guzman Energy LLC | Other Supplier | Affiliate Member |
| Barclays Services Corporation | Not applicable | Other Supplier | Voting Member |
| Baringa Partners LP | Not applicable | None | Associate |
| Bath County Energy, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Battery Utility of Ohio, LLC | RES America Developments, Inc. | Generation Owner | Affiliate Member |
| Bazinga, LLC | Bazinga, LLC | Other Supplier | Voting Member |
| Beaver Dam Energy LLC | Tenaska Power Services Co. | Generation Owner | Affiliate Member |
| Beech Ridge Energy II LLC | Southern Power Company | Generation Owner | Affiliate Member |
| Beech Ridge Energy LLC | Invenergy Energy Management LLC | Generation Owner | Affiliate Member |
| Beech Ridge Energy Storage LLC | Invenergy Energy Management LLC | Generation Owner | Affiliate Member |
| Bellflower Solar 1, LLC | BP Energy Company | Generation Owner | Affiliate Member |
| Bernards Solar, LLC | NJR Clean Energy Ventures Corporation | Generation Owner | Affiliate Member |
| Big Bend Trading, LLC | Not applicable | Other Supplier | Voting Member |
| Big Level Wind LLC | TransAlta Energy Marketing (U.S.) Inc. | Generation Owner | Affiliate Member |
| Big Plain Solar, LLC | Leeward Asset Management, LLC | Other Supplier | Affiliate Member |
| Big Rivers Electric Corporation | Not applicable | Other Supplier | Voting Member |
| Big Sandy Peaker Plant, LLC | Big Sandy Peaker Plant, LLC | Generation Owner | Voting Member |
| Big Sky Wind, LLC | Vitol Inc. | Generation Owner | Affiliate Member |
| Birchwood Power Partners, L.P. | Not applicable | Generation Owner | Voting Member |
| Birdsboro Power LLC | Hill Top Energy Center, LLC | Generation Owner | Affiliate Member |
| Bishop Hill Energy LLC | Brookfield Renewable Trading and Marketing LP | Generation Owner | Affiliate Member |
| Bitter Ridge Wind Farm, LLC | Not applicable | Generation Owner | Voting Member |
| Black Oak Capital, LLC | Black Oak Capital, LLC | Other Supplier | Voting Member |
| Black Rock Wind Force, LLC | NedPower Mount Storm, LLC | Generation Owner | Affiliate Member |
| Blackout Power Trading Inc. | Blackout Power Trading Inc. | Other Supplier | Voting Member |
| Blackstone Wind Farm II LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Blackstone Wind Farm, LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Blooming Grove Wind Energy Center LLC | Not applicable | Generation Owner | Voting Member |
| Blossom Solar, LLC | Not applicable | Other Supplier | Voting Member |
| Blue Harvest Solar Park LLC | EDP Renewables North America LLC | Other Supplier | Affiliate Member |
| Blue Ridge Power Agency, Inc. | Not applicable | Electric Distributor | Voting Member |
| Bluebird Solar LLC | Fern Solar LLC | Other Supplier | Affiliate Member |
| Borough of Butler, Butler Electric Division | Not applicable | Electric Distributor | Voting Member |
| Borough of Chambersburg | Not applicable | Electric Distributor | Voting Member |
| Borough of Columbia, PA | Not applicable | Other Supplier | Voting Member |
| Borough of Lavallette, New Jersey | Not applicable | Electric Distributor | Voting Member |
| Borough of Madison, New Jersey | Not applicable | Electric Distributor | Voting Member |
| Borough of Milltown, New Jersey | Not applicable | Electric Distributor | Voting Member |
| Borough of Mont Alto, Pennsylvania | Not applicable | Electric Distributor | Voting Member |
| Borough of Park Ridge, New Jersey | Not applicable | Electric Distributor | Voting Member |
| Borough of Pemberton, New Jersey | Not applicable | Electric Distributor | Voting Member |
| Borough of Pitcairn, Pennsylvania | Not applicable | Electric Distributor | Voting Member |
| Borough of Seaside Heights, New Jersey | Not applicable | Electric Distributor | Voting Member |
| Borough of South River, New Jersey | Not applicable | Electric Distributor | Voting Member |
| Boston Energy Group, Inc. | Not applicable | Other Supplier | Voting Member |
| Boston Energy Trading and Marketing LLC | Boston Energy Trading and Marketing LLC | Other Supplier | Voting Member |
| Bowfin KeyCon Energy, LLC | Olympus Power, LLC | Generation Owner | Affiliate Member |
| Bowfin KeyCon Power, LLC | Olympus Power, LLC | Generation Owner | Affiliate Member |
| Brandon Shores LLC | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| Brick Standard LLC | Not applicable | Generation Owner | Voting Member |
| Brookfield Power Piney & Deep Creek LLC | Brookfield Renewable Trading and Marketing LP | Generation Owner | Affiliate Member |
| Brookfield Renewable Energy Marketing US LLC | Brookfield Renewable Trading and Marketing LP | Other Supplier | Affiliate Member |
| Brookfield Renewable Trading and Marketing LP | Brookfield Renewable Trading and Marketing LP | Other Supplier | Voting Member |
| Brunner Island, LLC | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| Buckeye Power, Inc. | Not applicable | Electric Distributor | Voting Member |
| CCI U.S. Power Trading LLC | Castleton Commodities Merchant Trading L.P. | Other Supplier | Affiliate Member |
| CL-Viaduct Holding LLC | Harts Mill Solar, LLC | Other Supplier | Affiliate Member |
| CMS Energy Resource Management Company | CMS Energy Resource Management Company | Other Supplier | Voting Member |
| CN Lines Investments LLC | Not applicable | Other Supplier | Affiliate Member |
| COI Energy Services, Inc. | Not applicable | Other Supplier | Voting Member |
| CP Energy Marketing (US) Inc. | CP Energy Marketing (US) Inc. | Other Supplier | Voting Member |
| CPV Backbone Solar, LLC | CPV Power Holdings, LP | Other Supplier | Affiliate Member |
| CPV Fairview, LLC | CPV Power Holdings, LP | Generation Owner | Affiliate Member |
| CPV Keasbey, LLC | CPV Power Holdings, LP | Other Supplier | Affiliate Member |
| CPV Maple Hill Solar, LLC | CPV Power Holdings, LP | Generation Owner | Affiliate Member |
| CPV Maryland, LLC | CPV Power Holdings, LP | Generation Owner | Affiliate Member |
| CPV Power Holdings, LP | CPV Power Holdings, LP | Generation Owner | Voting Member |
| CPV Retail Energy LP | CPV Power Holdings, LP | Other Supplier | Affiliate Member |
| CPV Rogue's Wind, LLC | CPV Power Holdings, LP | Other Supplier | Affiliate Member |
| CPV Shore, LLC | CPV Power Holdings, LP | Generation Owner | Affiliate Member |
| CPV Three Rivers, LLC | CPV Power Holdings, LP | Other Supplier | Affiliate Member |
| CWP Energy Inc. | CWP Energy Inc. | Other Supplier | Voting Member |
| Caden Energix Axton LLC | Waverly Solar, LLC | Other Supplier | Affiliate Member |
| Caerus Commodities Trading LP | Not applicable | Other Supplier | Voting Member |
| Calpine Bethlehem, LLC | Calpine Energy Services, L.P. | Generation Owner | Affiliate Member |
| Calpine Energy Services, L.P. | Calpine Energy Services, L.P. | Generation Owner | Voting Member |
| Calpine Energy Solutions, LLC | Calpine Energy Services, L.P. | Other Supplier | Affiliate Member |
| Calpine Mid Atlantic Marketing, LLC | Calpine Energy Services, L.P. | Generation Owner | Affiliate Member |
| Calvert Cliffs Nuclear Power Plant, LLC | Constellation Energy Generation, LLC | Generation Owner | Affiliate Member |
| Cambria Wind LLC | Not applicable | Generation Owner | Voting Member |
| Cambridge Energy Solutions LLC | Not applicable | None | Associate |
| Camden Plant Holding, L.L.C. | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| Camden Solar LLC | Fern Solar LLC | Generation Owner | Affiliate Member |
| Camp Grove Wind Farm, LLC | Not applicable | Generation Owner | Voting Member |
| Capacity Markets Partners, LLC | Capacity Markets Partners, LLC | Other Supplier | Voting Member |
| Cape May County Municipal Utilities Authority | Not applicable | End-Use Customer | Voting Member |
| Carolina Power Partners, LLC | Not applicable | Other Supplier | Voting Member |
| Carroll County Energy LLC | Carroll County Energy LLC | Generation Owner | Voting Member |
| Castleton Commodities Merchant Trading L.P. | Castleton Commodities Merchant Trading L.P. | Other Supplier | Voting Member |
| Catalyst Power & Gas LLC | Not applicable | Other Supplier | Voting Member |
| Central Electric Power Cooperative, Inc. | Central Electric Power Cooperative, Inc. | Other Supplier | Voting Member |
| Central Transmission, LLC | Rolling Hills Generating, LLC | Other Supplier | Affiliate Member |
| Central Virginia Electric Cooperative | Not applicable | Electric Distributor | Voting Member |
| Centre Lane Trading Limited | Not applicable | Other Supplier | Voting Member |
| Champion Energy Marketing LLC | Calpine Energy Services, L.P. | Other Supplier | Affiliate Member |
| Champion Energy Services, LLC | Calpine Energy Services, L.P. | Other Supplier | Affiliate Member |
| Champion Energy, LLC | Calpine Energy Services, L.P. | Other Supplier | Affiliate Member |
| Chesapeake Transmission LLC | H-P Energy Resources, LLC | Other Supplier | Affiliate Member |
| Chief Conemaugh Power II, LLC | Parkway Generation Operating LLC | Generation Owner | Affiliate Member |
| Chief Conemaugh Power, LLC | Chief Conemaugh Power, LLC | Generation Owner | Voting Member |
| Chief Keystone Power II, LLC | Parkway Generation Operating LLC | Generation Owner | Affiliate Member |
| Chief Keystone Power, LLC | Chief Conemaugh Power, LLC | Generation Owner | Affiliate Member |
| Choice Energy, LLC dba 4 Choice Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Cinnamon Bay LLC | Not applicable | Generation Owner | Voting Member |
| Citadel FNGE Ltd. | Not applicable | Other Supplier | Voting Member |
| Citigroup Energy, Inc. | Not applicable | Other Supplier | Voting Member |
| Citizens' Electric Company of Lewisburg, PA | Wellsboro Electric Company | Electric Distributor | Affiliate Member |
| City Power & Gas, LLC | Not applicable | Other Supplier | Voting Member |
| City of Batavia, Illinois | Not applicable | Electric Distributor | Voting Member |
| City of Cleveland, DPU, Division of Cleveland Public Power | Not applicable | Electric Distributor | Voting Member |
| City of Dover, Delaware | Not applicable | Electric Distributor | Voting Member |
| City of Hamilton, Ohio | Not applicable | Electric Distributor | Voting Member |
| City of Rochelle, Illinois | Not applicable | Electric Distributor | Voting Member |
| Clarity Grid Solutions, Inc. | Not applicable | None | Associate |
| Clean Energy Future - Lordstown, LLC | Wheelabrator Falls Inc. | Generation Owner | Affiliate Member |
| CleanChoice Energy, Inc. | Not applicable | Other Supplier | Voting Member |
| Clearview Electric Inc. | Not applicable | Other Supplier | Voting Member |
| Clearview Solar I, LLC | Algonquin Energy Services, Inc. | Other Supplier | Affiliate Member |
| Cleveland Electric Illuminating Company | Monongahela Power Company d/b/a Allegheny Power | Electric Distributor | Affiliate Member |
| Cleveland-Cliffs Steel Corporation | Cleveland-Cliffs Steel LLC | End-Use Customer | Affiliate Member |
| Cleveland-Cliffs Steel LLC | Cleveland-Cliffs Steel LLC | End-Use Customer | Voting Member |
| Click Energy, LLC | Shipley Choice, LLC | Other Supplier | Affiliate Member |
| Clone Capital LLC | Not applicable | None | Associate |
| Coaltrain Energy, LP | XO Energy MA, L.P. | Other Supplier | Affiliate Member |
| Collegiate Clean Energy, LLC | Castleton Commodities Merchant Trading L.P. | Other Supplier | Affiliate Member |
| Comity Inc. | Not applicable | Other Supplier | Voting Member |
| Commonwealth Chesapeake Company, LLC | Tyr Energy, LLC | Generation Owner | Affiliate Member |
| Commonwealth Edison Company | Exelon Business Services Company, LLC | Transmission Owner | Affiliate Member |
| Community Energy, Inc. | Not applicable | Other Supplier | Voting Member |
| ConnectGen East LLC | Not applicable | None | Associate |
| ConocoPhillips Company | Not applicable | Other Supplier | Voting Member |
| Consolidated Edison Company of New York, Inc. | Rockland Electric Company | Other Supplier | Affiliate Member |
| Constellation Energy Generation, LLC | Constellation Energy Generation, LLC | Generation Owner | Voting Member |
| Constellation NewEnergy, Inc. | Constellation Energy Generation, LLC | Other Supplier | Affiliate Member |
| Consumer Protection and Advocate Division of the Tennessee Attorney General | Not applicable | End-Use Customer | Ex Officio Member |
| Consumers Energy Company | CMS Energy Resource Management Company | Other Supplier | Affiliate Member |
| Convergent Energy and Power LP | Calpine Energy Services, L.P. | Other Supplier | Affiliate Member |
| Cordova Energy Company LLC | MidAmerican Energy Company | Generation Owner | Affiliate Member |
| Cork Oak Solar LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Cornerstone Gas, L.L.C. | Not applicable | Generation Owner | Affiliate Member |
| Corona Power, LLC | Corona Power, LLC | Generation Owner | Voting Member |
| Cottontail Solar 1, LLC | BP Energy Company | Generation Owner | Affiliate Member |
| Cottontail Solar 2, LLC | BP Energy Company | Generation Owner | Affiliate Member |
| Cottontail Solar 3, LLC | BP Energy Company | Other Supplier | Affiliate Member |
| Cottontail Solar 4, LLC | BP Energy Company | Other Supplier | Affiliate Member |
| Cottontail Solar 5, LLC | BP Energy Company | Other Supplier | Affiliate Member |
| Cottontail Solar 6, LLC | BP Energy Company | Other Supplier | Affiliate Member |
| Cottontail Solar 7, LLC | BP Energy Company | Other Supplier | Affiliate Member |
| Cottontail Solar 8, LLC | BP Energy Company | Generation Owner | Affiliate Member |
| County of Frederick, Virginia | Not applicable | End-Use Customer | Voting Member |
| Covanta Energy Marketing LLC | Covanta Energy Marketing LLC | Generation Owner | Voting Member |
| Covanta Union, LLC | Covanta Energy Marketing LLC | Generation Owner | Affiliate Member |
| Crescent Ridge LLC | Leeward Asset Management, LLC | Generation Owner | Affiliate Member |
| Crete Energy Venture, LLC | Lincoln Generating Facility, LLC | Generation Owner | Affiliate Member |
| Crossroads Solar I, LLC | Open Road Renewables, LLC | Other Supplier | Affiliate Member |
| Cube Hydro Partners, LLC | Cube Hydro Partners, LLC | Generation Owner | Voting Member |
| Current Energy and Renewables Inc. | Not applicable | Other Supplier | Voting Member |
| Customized Energy Solutions, Ltd. | Not applicable | None | Special Member |
| Cypress Creek Renewables, LLC | Not applicable | Generation Owner | Voting Member |
| DC Energy Mid-Atlantic, LLC | DC Energy, LLC | Other Supplier | Affiliate Member |
| DC Energy, LLC | DC Energy, LLC | Other Supplier | Voting Member |
| DCET CENTRAL, LLC | Not applicable | Other Supplier | Affiliate Member |
| DCO Energy, LLC | DCO Energy, LLC | Generation Owner | Voting Member |
| DPL Energy Resources, Inc. | Interstate Gas Supply, LLC | Other Supplier | Affiliate Member |
| DRW Energy Trading LLC | Altrock LLC | Other Supplier | Affiliate Member |
| DTE Atlantic, LLC | DTE Energy Trading, Inc. | Other Supplier | Affiliate Member |
| DTE Energy Trading, Inc. | DTE Energy Trading, Inc. | Other Supplier | Voting Member |
| DTN, LLC | Not applicable | None | Associate |
| DV Trading, LLC | Not applicable | Other Supplier | Voting Member |
| DXT Commodities North America Inc. | Not applicable | Other Supplier | Voting Member |
| Danske Commodities US LLC | Not applicable | Other Supplier | Voting Member |
| Darby Energy, LLC | Peakstone Energy, LLC | Other Supplier | Affiliate Member |
| Darby Power, LLC | Parkway Generation Operating LLC | Generation Owner | Affiliate Member |
| Dart Container Corporation of Pennsylvania | Not applicable | Generation Owner | Voting Member |
| David Energy Supply, LLC | Not applicable | Other Supplier | Voting Member |
| Dayton Power & Light Company (The) | Dayton Power & Light Company (The) | Transmission Owner | Voting Member |
| Decatur Energy Center, LLC | CP Energy Marketing (US) Inc. | Generation Owner | Affiliate Member |
| Delaware Division of the Public Advocate | Not applicable | End-Use Customer | Ex Officio Member |
| Delaware Municipal Electric Corporation, Inc. | Not applicable | Electric Distributor | Voting Member |
| Delmarva Power & Light Company | Exelon Business Services Company, LLC | Electric Distributor | Affiliate Member |
| Deriva Energy Services, LLC | Duke Energy Business Services LLC | Generation Owner | Affiliate Member |
| Devonshire Energy LLC | Not applicable | Other Supplier | Voting Member |
| Diamond State Generation Partners, LLC | Diamond State Generation Partners, LLC | Generation Owner | Voting Member |
| Direct Energy Business, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Direct Energy Services, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Discount Power, Inc. | Not applicable | Other Supplier | Voting Member |
| Divine Power, Inc. | Not applicable | Other Supplier | Voting Member |
| Dominion Energy Generation Marketing, Inc. | Virginia Electric & Power Company | Generation Owner | Affiliate Member |
| Dominion Energy South Carolina, Inc. | Virginia Electric & Power Company | Other Supplier | Affiliate Member |
| Domtar Paper Company, LLC | Not applicable | Generation Owner | Voting Member |
| Doral Renewables LLC | Not applicable | Generation Owner | Voting Member |
| Doswell Limited Partnership | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Drake Power, LLC | Open Road Renewables, LLC | Other Supplier | Affiliate Member |
| Duke Energy Business Services LLC | Duke Energy Business Services LLC | Transmission Owner | Voting Member |
| Duke Energy Carolinas, LLC | Duke Energy Business Services LLC | Other Supplier | Affiliate Member |
| Duke Energy Florida, LLC | Duke Energy Business Services LLC | Other Supplier | Affiliate Member |
| Duke Energy Kentucky, Inc. | Duke Energy Business Services LLC | Transmission Owner | Affiliate Member |
| Duke Energy Ohio, Inc. | Duke Energy Business Services LLC | Transmission Owner | Affiliate Member |
| Duke Energy Progress, LLC | Duke Energy Business Services LLC | Other Supplier | Affiliate Member |
| Duquesne Light Company | Duquesne Light Company | Transmission Owner | Voting Member |
| Duquesne Light Energy, LLC | Duquesne Light Company | Other Supplier | Affiliate Member |
| Duquesne Power, LLC | Duquesne Light Company | Other Supplier | Affiliate Member |
| Dynamix Energy Services Company, LLC | Not applicable | End-Use Customer | Voting Member |
| Dynasty Energy California Inc. | Dynasty Power Inc | Other Supplier | Affiliate Member |
| Dynasty Power Inc | Dynasty Power Inc | Other Supplier | Voting Member |
| Dynegy Energy Services, LLC | Dynegy Marketing and Trade, LLC | Other Supplier | Affiliate Member |
| Dynegy Marketing and Trade, LLC | Dynegy Marketing and Trade, LLC | Generation Owner | Voting Member |
| Dynegy Power Marketing, LLC | Dynegy Marketing and Trade, LLC | Generation Owner | Affiliate Member |
| EDF Trading North America, LLC | EDF Trading North America, LLC | Other Supplier | Voting Member |
| EDP Renewables North America LLC | EDP Renewables North America LLC | Generation Owner | Voting Member |
| EF Kenilworth LLC | Not applicable | Generation Owner | Voting Member |
| EFS Parlin Holdings, LLC | Linden VFT LLC | Generation Owner | Affiliate Member |
| ENGIE Energy Marketing NA, Inc. | ENGIE Energy Marketing NA, Inc. | Other Supplier | Voting Member |
| ENGIE Power & Gas LLC | ENGIE Energy Marketing NA, Inc. | Other Supplier | Affiliate Member |
| ENGIE Resources LLC | ENGIE Energy Marketing NA, Inc. | Other Supplier | Affiliate Member |
| EPP Renewable Energy, LLC | Energy Power Investment Company, LLC | Generation Owner | Affiliate Member |
| ESC Harrison County Power, LLC | Moxie Freedom LLC | Other Supplier | Affiliate Member |
| ETC Endure Energy L.L.C. | ETC Endure Energy L.L.C. | Other Supplier | Voting Member |
| Eagle Creek Hydro Holdings, LLC | Cube Hydro Partners, LLC | Generation Owner | Affiliate Member |
| Eagle Point Power Generation LLC | Eagle Point Power Generation LLC | Generation Owner | Voting Member |
| East Coast Power Linden Holding, L.L.C. | Carroll County Energy LLC | Generation Owner | Affiliate Member |
| East Kentucky Power Cooperative, Inc. | East Kentucky Power Cooperative, Inc. | Transmission Owner | Voting Member |
| Eastern Generation, LLC | Parkway Generation Operating LLC | Generation Owner | Affiliate Member |
| Eastern Shore Solar LLC | Virginia Electric & Power Company | Generation Owner | Affiliate Member |
| Easton Utilities Commission | Not applicable | Electric Distributor | Voting Member |
| Ebensburg Power Company | Not applicable | Generation Owner | Voting Member |
| EcoGrove Wind, LLC | Acciona Energy North America Corporation | Generation Owner | Affiliate Member |
| EcoPlus Power, LLC | Not applicable | Other Supplier | Voting Member |
| Edgecombe Solar LLC | Invenergy Energy Management LLC | Other Supplier | Affiliate Member |
| Electranet REP I, LLC | Not applicable | Other Supplier | Voting Member |
| Elevate Energy | Not applicable | None | Associate |
| Elgin Energy Center, LLC | Essential Power Rock Springs, LLC | Generation Owner | Affiliate Member |
| Eligo Energy, LLC | Eligo Energy, LLC | Other Supplier | Voting Member |
| Elk Hill Solar 1, LLC | BP Energy Company | Generation Owner | Affiliate Member |
| Elk Hill Solar 2, LLC | BP Energy Company | Generation Owner | Affiliate Member |
| Elk Run Storage LLC | Jupiter Power LLC | Other Supplier | Affiliate Member |
| Elliott Advisors (UK) Limited | Not applicable | None | Associate |
| Elliott Bay Energy Trading, LLC | Not applicable | Other Supplier | Voting Member |
| Elm Line LLC | Jupiter Power LLC | Other Supplier | Affiliate Member |
| Elmagin Power Fund LLC | Not applicable | Other Supplier | Voting Member |
| Elmwood Park Power, LLC | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| Elwood Energy, LLC | Elwood Energy, LLC | Generation Owner | Voting Member |
| Emera Energy Services, Inc. | Not applicable | Other Supplier | Voting Member |
| Emporia Hydropower Limited Partnership | Emporia Hydropower Limited Partnership | Generation Owner | Voting Member |
| EnPowered USA Inc. | Not applicable | Other Supplier | Voting Member |
| Enel Green Power Hilltopper Wind, LLC | Enel X North America, Inc. | Generation Owner | Affiliate Member |
| Enel Trading North America, LLC | Enel X North America, Inc. | Other Supplier | Affiliate Member |
| Enel X North America, Inc. | Enel X North America, Inc. | Other Supplier | Voting Member |
| EnerPenn USA, LLC | Not applicable | Other Supplier | Voting Member |
| EnerVision Associates, Inc. | Not applicable | None | Associate |
| Energo Power & Gas LLC dba Energo | Not applicable | Other Supplier | Voting Member |
| Energy Authority, Inc. (The) | American Municipal Power, Inc. | Other Supplier | Affiliate Member |
| Energy Center Dover LLC | DCO Energy, LLC | Generation Owner | Affiliate Member |
| Energy Cooperative Association of Pennsylvania (The) | Not applicable | Other Supplier | Voting Member |
| Energy Cooperative of America, Inc. | Not applicable | Other Supplier | Voting Member |
| Energy Developments Honey Brook, LLC | Not applicable | Generation Owner | Voting Member |
| Energy Harbor LLC | Not applicable | Generation Owner | Voting Member |
| Energy Plus Holdings LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Energy Power Investment Company, LLC | Energy Power Investment Company, LLC | Other Supplier | Voting Member |
| Energy Services Providers, LLC | Dynegy Marketing and Trade, LLC | Other Supplier | Affiliate Member |
| Energy Technology Savings, Inc. dba Logical Buildings | Not applicable | Other Supplier | Voting Member |
| Energy Transfer Retail Power, LLC | ETC Endure Energy L.L.C. | Other Supplier | Affiliate Member |
| EnergyMark, LLC | South Jersey Energy Company | Other Supplier | Affiliate Member |
| Enerwise Global Technologies, LLC | Rolling Hills Generating, LLC | Other Supplier | Affiliate Member |
| Engelhart CTP (US) LLC | Not applicable | Other Supplier | Voting Member |
| Entergrid Fund I LLC | Not applicable | Other Supplier | Voting Member |
| Enverus, Inc. | Not applicable | None | Associate |
| Essential Power OPP, LLC | Essential Power Rock Springs, LLC | Generation Owner | Affiliate Member |
| Essential Power Rock Springs, LLC | Essential Power Rock Springs, LLC | Generation Owner | Voting Member |
| Evergreen Gas & Electric, LLC | IDT Energy, Inc. | Other Supplier | Affiliate Member |
| Evergy Kansas Central, Inc. | Evergy Metro, Inc. | Other Supplier | Affiliate Member |
| Evergy Metro, Inc. | Evergy Metro, Inc. | Other Supplier | Voting Member |
| Everyday Energy, LLC | Dynegy Marketing and Trade, LLC | Other Supplier | Affiliate Member |
| Exelon Business Services Company, LLC | Exelon Business Services Company, LLC | Transmission Owner | Voting Member |
| FP East Capital Partners LLC | Not applicable | Other Supplier | Voting Member |
| Fairless Energy, L.L.C. | Hazleton Generation LLC | Generation Owner | Affiliate Member |
| Fantods LLC | Not applicable | Other Supplier | Voting Member |
| Fermata Energy LLC | Not applicable | Other Supplier | Voting Member |
| Fern Solar LLC | Fern Solar LLC | Generation Owner | Voting Member |
| FiTran Fund LP | Not applicable | Other Supplier | Voting Member |
| Filsinger Energy Partners, Inc. | Not applicable | None | Associate |
| First Point Power, LLC | Not applicable | Other Supplier | Voting Member |
| FirstEnergy Pennsylvania Electric Company | Monongahela Power Company d/b/a Allegheny Power | Electric Distributor | Affiliate Member |
| Five Elements Energy LLC | Not applicable | Other Supplier | Voting Member |
| Five Forks Solar, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Five Rings LLC | Not applicable | None | Associate |
| Florida Power & Light Company | NextEra Energy Marketing, LLC | Other Supplier | Affiliate Member |
| Forest Investment Group, LLC | Not applicable | Other Supplier | Voting Member |
| Forked River Power LLC | Forked River Power LLC | Generation Owner | Voting Member |
| Fowler Ridge II Wind Farm LLC | BP Energy Company | Generation Owner | Affiliate Member |
| Fowler Ridge IV Wind Farm, LLC | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| Fowler Ridge Wind Farm LLC | BP Energy Company | Generation Owner | Affiliate Member |
| Foxhound Solar, LLC | Not applicable | Generation Owner | Affiliate Member |
| Franklin Power LLC | BJ Energy, LLC | Other Supplier | Affiliate Member |
| Frasier Solar, LLC | Open Road Renewables, LLC | Other Supplier | Affiliate Member |
| Freepoint Commodities LLC | Freepoint Commodities LLC | Other Supplier | Voting Member |
| Freepoint Energy Solutions LLC | Freepoint Commodities LLC | Other Supplier | Affiliate Member |
| Fresh Air Energy XVIII, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Fresh Air Energy XXXV, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| G&S Wantage Solar LLC | Not applicable | Generation Owner | Voting Member |
| GBE Energy Marketing Inc. | Mianus River Energy, LLC | Other Supplier | Affiliate Member |
| GRG ENERGY LLC | Not applicable | Other Supplier | Voting Member |
| GSG 6, LLC | Algonquin Energy Services, Inc. | Generation Owner | Affiliate Member |
| GSG, LLC | Leeward Asset Management, LLC | Generation Owner | Affiliate Member |
| GT Power Group, LLC | Not applicable | None | Associate |
| Galilean Electricae LLC | Not applicable | Other Supplier | Voting Member |
| Gallus Capital LLC | Not applicable | Other Supplier | Voting Member |
| Galt Power, Inc. | Galt Power, Inc. | Other Supplier | Voting Member |
| Gaucho Solar LLC | Nestlewood Solar I LLC | Generation Owner | Affiliate Member |
| Gavin Power, LLC | Parkway Generation Operating LLC | Generation Owner | Affiliate Member |
| Geenex Solar LLC | Not applicable | Other Supplier | Voting Member |
| Gen IV Investment Opportunities, LLC | Rolling Hills Generating, LLC | Other Supplier | Affiliate Member |
| Gen Ops, LLC | KeyTex Energy LLC | Other Supplier | Affiliate Member |
| GenOn Energy Management, LLC | GenOn Energy Management, LLC | Generation Owner | Voting Member |
| GenOn Power Midwest LP | GenOn Energy Management, LLC | Generation Owner | Affiliate Member |
| GenOn REMA, LLC | GenOn Energy Management, LLC | Generation Owner | Affiliate Member |
| Genability Inc. | Not applicable | None | Associate |
| Genscape, Inc. | Not applicable | None | Associate |
| Geodesic 2 LLC | Not applicable | Other Supplier | Voting Member |
| Georgia Power Company | Southern Power Company | Other Supplier | Affiliate Member |
| Gerdau Ameristeel Energy, Inc. | Not applicable | End-Use Customer | Voting Member |
| GlidePath Power Operations LLC | Not applicable | Generation Owner | Voting Member |
| Goldin LLC | Altrock LLC | Other Supplier | Affiliate Member |
| Grand Ridge Energy II LLC | Invenergy Energy Management LLC | Generation Owner | Affiliate Member |
| Grand Ridge Energy III LLC | Invenergy Energy Management LLC | Generation Owner | Affiliate Member |
| Grand Ridge Energy IV, LLC | Invenergy Energy Management LLC | Generation Owner | Affiliate Member |
| Grand Ridge Energy Storage, LLC | Invenergy Energy Management LLC | Generation Owner | Affiliate Member |
| Grand Ridge Energy, LLC | Invenergy Energy Management LLC | Generation Owner | Affiliate Member |
| Grange Solar, LLC | Open Road Renewables, LLC | Other Supplier | Affiliate Member |
| Grantham Energy Corporation | Not applicable | Other Supplier | Voting Member |
| Grasshopper Energy LLC | Not applicable | Other Supplier | Voting Member |
| Grays Ferry Cogeneration Partnership | Grays Ferry Cogeneration Partnership | Generation Owner | Voting Member |
| Great American Gas & Electric, LLC | Not applicable | Other Supplier | Voting Member |
| Great American Power, LLC | Great American Power, LLC | Other Supplier | Voting Member |
| Great Barrington Energy Fund LP | Not applicable | Other Supplier | Voting Member |
| Great Cove Solar II LLC | Dayton Power & Light Company (The) | Other Supplier | Affiliate Member |
| Great Cove Solar LLC | Dayton Power & Light Company (The) | Other Supplier | Affiliate Member |
| Great Falls Hydroelectric Company Limited Partnership | Cube Hydro Partners, LLC | Generation Owner | Affiliate Member |
| Green Mountain Energy Company | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Green River Holdings, LLC | Green River Holdings, LLC | Generation Owner | Voting Member |
| Greene Energy NE LLC | Greene Energy NE LLC | Other Supplier | Voting Member |
| Greenlight Energy Inc. | Not applicable | Other Supplier | Voting Member |
| Greensville County Solar Project, LLC | Virginia Electric & Power Company | Generation Owner | Affiliate Member |
| Grid Power Direct, LLC | Not applicable | Other Supplier | Voting Member |
| Grid Status Inc. | Not applicable | None | Associate |
| GridBeyond, LLC | Not applicable | Other Supplier | Voting Member |
| Gridforce Energy Management, LLC | Tyr Energy, LLC | Other Supplier | Affiliate Member |
| Gridmatic Inc. | Gridmatic Inc. | Other Supplier | Voting Member |
| Gridmatic Panicum LLC | Gridmatic Inc. | Other Supplier | Affiliate Member |
| Group628, LLC | Not applicable | Other Supplier | Voting Member |
| Guernsey Power Station LLC | Moxie Freedom LLC | Generation Owner | Affiliate Member |
| Guidehouse Inc. | Not applicable | None | Associate |
| Gunvor USA LLC | Not applicable | Other Supplier | Voting Member |
| Guzman Energy LLC | Guzman Energy LLC | Other Supplier | Voting Member |
| H-P Energy Resources, LLC | H-P Energy Resources, LLC | Other Supplier | Voting Member |
| H.A. Wagner LLC | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| H.Q. Energy Services (U.S.), Inc. | H.Q. Energy Services (U.S.), Inc. | Other Supplier | Voting Member |
| HD Project One, LLC | Not applicable | Generation Owner | Voting Member |
| HXNAir Solar One, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Hagerstown Light Department | Not applicable | Electric Distributor | Voting Member |
| Half Moon Ventures, LLC | Not applicable | Other Supplier | Voting Member |
| Hamilton Liberty LLC | Essential Power Rock Springs, LLC | Generation Owner | Affiliate Member |
| Hamilton Patriot LLC | Essential Power Rock Springs, LLC | Generation Owner | Affiliate Member |
| Hammond Solar, LLC | Open Road Renewables, LLC | Other Supplier | Affiliate Member |
| Handsome Lake Energy, LLC | Constellation Energy Generation, LLC | Generation Owner | Affiliate Member |
| Harborside Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Hardin Solar Energy LLC | Virginia Electric & Power Company | Generation Owner | Affiliate Member |
| Hardin Wind LLC | RWE Clean Energy, LLC | Generation Owner | Affiliate Member |
| Harrison REA, Inc. - Clarksburg, West Virginia | Not applicable | Electric Distributor | Voting Member |
| Hartree Partners, LP | Brookfield Renewable Trading and Marketing LP | Other Supplier | Affiliate Member |
| Harts Mill Solar, LLC | Harts Mill Solar, LLC | Generation Owner | Voting Member |
| Harvey Solar I, LLC | Open Road Renewables, LLC | Other Supplier | Affiliate Member |
| Hawks Nest Hydro LLC | Brookfield Renewable Trading and Marketing LP | Generation Owner | Affiliate Member |
| Hazle Spindle, LLC | Calpine Energy Services, L.P. | Other Supplier | Affiliate Member |
| Hazleton Generation LLC | Hazleton Generation LLC | Generation Owner | Voting Member |
| Headwaters Wind Farm II LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Headwaters Wind Farm LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Hecate Energy Highland LLC | Not applicable | Generation Owner | Voting Member |
| Helix Ironwood, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Hemlock Solar, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Hemsworth Capital Midwest LP | Hemsworth Capital, L.P. | Other Supplier | Affiliate Member |
| Hemsworth Capital, L.P. | Hemsworth Capital, L.P. | Other Supplier | Voting Member |
| Heritage Power Marketing, LLC | GenOn Energy Management, LLC | Generation Owner | Affiliate Member |
| Hexis Energy Trading, LLC | Not applicable | Other Supplier | Voting Member |
| Hickory Run Energy, LLC | Tyr Energy, LLC | Generation Owner | Affiliate Member |
| High Point Solar LLC | Acciona Energy North America Corporation | Other Supplier | Affiliate Member |
| High Trail Wind Farm LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Highland North LLC | Vitol Inc. | Generation Owner | Affiliate Member |
| Hill Top Energy Center, LLC | Hill Top Energy Center, LLC | Generation Owner | Voting Member |
| Hillcrest Solar I, LLC | H.Q. Energy Services (U.S.), Inc. | Generation Owner | Affiliate Member |
| Hitachi Energy USA Inc. | Not applicable | None | Associate |
| Holcim (US) Inc. | Not applicable | End-Use Customer | Voting Member |
| Holocene Finance, LLC | Not applicable | Other Supplier | Voting Member |
| Homer City Generation, L.P. | Homer City Generation, L.P. | Generation Owner | Voting Member |
| Hoosier Energy REC, Inc. | Not applicable | End-Use Customer | Voting Member |
| Horizon Power and Light, LLC | Summer Energy Midwest, LLC | Other Supplier | Affiliate Member |
| Hudson Energy Services LLC | Just Energy Solutions Inc. | Other Supplier | Affiliate Member |
| Hudson Transmission Partners, LLC | Neptune Regional Transmission System, LLC | Transmission Owner | Affiliate Member |
| Hummel Station, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| IDT Energy, Inc. | IDT Energy, Inc. | Other Supplier | Voting Member |
| IHG Core Holdings, Ltd. | Not applicable | Other Supplier | Voting Member |
| IHS Global Inc. | Not applicable | None | Associate |
| IMG Midstream LLC | IMG Midstream LLC | Generation Owner | Voting Member |
| IPKeys Power Partners, Inc. | Not applicable | Other Supplier | Voting Member |
| IR Energy Management LLC | Invenergy Energy Management LLC | Other Supplier | Affiliate Member |
| ISO 1, LLC | Not applicable | Other Supplier | Voting Member |
| ITC Mid-Atlantic Development LLC | ITC Mid-Atlantic Development LLC | Other Supplier | Voting Member |
| Icetec Energy Services, Inc. | Icetec.com, Inc. | Other Supplier | Affiliate Member |
| Icetec.com, Inc. | Icetec.com, Inc. | Other Supplier | Voting Member |
| Illinois Citizen Utility Board | Not applicable | End-Use Customer | Ex Officio Member |
| Illinois Municipal Electric Agency | Not applicable | Electric Distributor | Voting Member |
| Illinois Power Marketing Company | Dynegy Marketing and Trade, LLC | Other Supplier | Affiliate Member |
| In Commodities US LLC | Not applicable | Other Supplier | Voting Member |
| Indeck Niles, LLC | Indeck Niles, LLC | Generation Owner | Voting Member |
| Independence Energy Group, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Independent Energy Consultants, Inc.* | Not applicable | None | Special Member |
| Indiana Michigan Power Company | Appalachian Power Company | Transmission Owner | Affiliate Member |
| Indiana Municipal Power Agency | Not applicable | Electric Distributor | Voting Member |
| Indiana Office of Utility Consumer Counselor (IN OUCC) | Not applicable | End-Use Customer | Ex Officio Member |
| Inerci Capital Inc. | Not applicable | Other Supplier | Voting Member |
| Inertia Power I, LLC | Inertia Power I, LLC | Other Supplier | Voting Member |
| Ingenco Wholesale Power, LLC | Castleton Commodities Merchant Trading L.P. | Generation Owner | Affiliate Member |
| Innergex Renewable USA LLC | H.Q. Energy Services (U.S.), Inc. | Generation Owner | Affiliate Member |
| Innoventive Power, LLC | Not applicable | Other Supplier | Voting Member |
| Inspire Energy Holdings, LLC | Shell Energy North America (US), L.P. | Other Supplier | Affiliate Member |
| Intelligent Generation LLC | Not applicable | Other Supplier | Voting Member |
| International Paper Company | Not applicable | Generation Owner | Voting Member |
| Interstate Gas Supply, LLC | Interstate Gas Supply, LLC | Other Supplier | Voting Member |
| Interstate Power and Light Company | Alliant Energy Corporate Services, Inc. | Other Supplier | Affiliate Member |
| Invenergy Energy Management LLC | Invenergy Energy Management LLC | Generation Owner | Voting Member |
| Invenergy Nelson Expansion LLC | Invenergy Energy Management LLC | Other Supplier | Affiliate Member |
| Invenergy Nelson, LLC | Invenergy Energy Management LLC | Generation Owner | Affiliate Member |
| Invenergy, LLC | Invenergy Energy Management LLC | Generation Owner | Affiliate Member |
| J. Aron & Company LLC | Not applicable | Other Supplier | Voting Member |
| J.P. Morgan Ventures Energy Corporation | Not applicable | Other Supplier | Voting Member |
| Jack Rich, Inc. d/b/a Anthracite Power & Light Company | Jack Rich, Inc. d/b/a Anthracite Power & Light Company | Other Supplier | Voting Member |
| Jackson Generation, LLC | Elwood Energy, LLC | Generation Owner | Affiliate Member |
| Jane Street Energy Trading, LLC | Not applicable | Other Supplier | Voting Member |
| Janus Power LLC | Not applicable | Other Supplier | Voting Member |
| Jersey Central Power & Light Company | Monongahela Power Company d/b/a Allegheny Power | Transmission Owner | Affiliate Member |
| Jersey Green Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Jersey-Atlantic Wind, LLC | Leeward Asset Management, LLC | Generation Owner | Affiliate Member |
| Josco Energy IL LLC | Josco Energy USA, LLC | Other Supplier | Affiliate Member |
| Josco Energy USA, LLC | Josco Energy USA, LLC | Other Supplier | Voting Member |
| Jupiter Power LLC | Jupiter Power LLC | Other Supplier | Voting Member |
| Just Energy Limited | Just Energy Solutions Inc. | Other Supplier | Affiliate Member |
| Just Energy Solutions Inc. | Just Energy Solutions Inc. | Other Supplier | Voting Member |
| KDC Solar Green Power LLC | Not applicable | Generation Owner | Voting Member |
| KFW Energy, LLC | Not applicable | Other Supplier | Voting Member |
| KMC Thermo, LLC | Not applicable | Generation Owner | Voting Member |
| KOREnergy, Ltd. | Not applicable | Other Supplier | Voting Member |
| Kendall Power Company LLC | Dynegy Marketing and Trade, LLC | Generation Owner | Affiliate Member |
| Keni Energy LLC | Not applicable | Other Supplier | Voting Member |
| Kentucky Municipal Energy Agency | Not applicable | Electric Distributor | Voting Member |
| Kentucky Power Company | Appalachian Power Company | Transmission Owner | Affiliate Member |
| Kestrel Acquisition, LLC | Not applicable | Generation Owner | Voting Member |
| Kevala, Inc. | Not applicable | None | Associate |
| KeyCon Power Holdings LLC | KeyCon Power Holdings LLC | Generation Owner | Voting Member |
| KeyTex Energy LLC | KeyTex Energy LLC | Other Supplier | Voting Member |
| KeyTex Energy Solutions, LLC | KeyTex Energy LLC | Other Supplier | Affiliate Member |
| Keystone Appalachian Transmission Company | Monongahela Power Company d/b/a Allegheny Power | Transmission Owner | Affiliate Member |
| Keystone-Conemaugh Projects, LLC | KeyCon Power Holdings LLC | Other Supplier | Affiliate Member |
| Kimberly-Clark Corporation | Not applicable | Generation Owner | Voting Member |
| Kincaid Generation, LLC | Dynegy Marketing and Trade, LLC | Generation Owner | Affiliate Member |
| Kingsport Power Company | Appalachian Power Company | Transmission Owner | Affiliate Member |
| Kiwi Energy NY LLC | Spring Energy RRH, LLC dba Spring Power & Gas | Other Supplier | Affiliate Member |
| Kuehne Chemical Company, Inc. | Not applicable | End-Use Customer | Voting Member |
| L & P Electric Inc., d/b/a Leggett & Platt Electric Inc. | Not applicable | Other Supplier | Voting Member |
| LCP Energy LP | Peak Energy Capital LP | Other Supplier | Affiliate Member |
| LM Power, LLC | Not applicable | Other Supplier | Voting Member |
| LMBE Project Company LLC | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| LQA, LLC | Tenaska Power Services Co. | Other Supplier | Affiliate Member |
| LSP University Park, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| LTSTE Investments, LLC | Not applicable | Other Supplier | Voting Member |
| Lackawanna Energy Center LLC | Invenergy Energy Management LLC | Generation Owner | Affiliate Member |
| Lafayette Power LLC | BJ Energy, LLC | Other Supplier | Affiliate Member |
| Lancaster County Solid Waste Management Authority | Not applicable | Generation Owner | Voting Member |
| Land O'Lakes, Inc. | Not applicable | End-Use Customer | Voting Member |
| Lantar Energy LLC | Not applicable | Other Supplier | Voting Member |
| Lanyard Power Holdings, LLC | GenOn Energy Management, LLC | Generation Owner | Affiliate Member |
| Lanyard Power Marketing, LLC | GenOn Energy Management, LLC | Other Supplier | Affiliate Member |
| Lawrenceburg Power, LLC | Parkway Generation Operating LLC | Generation Owner | Affiliate Member |
| Leapfrog Power, Inc. | Not applicable | Other Supplier | Voting Member |
| Lee County Generating Station, LLC | Eagle Point Power Generation LLC | Generation Owner | Affiliate Member |
| Leeward Asset Management, LLC | Leeward Asset Management, LLC | Generation Owner | Voting Member |
| Lehigh Portland Cement Company | Not applicable | End-Use Customer | Voting Member |
| Letterkenny Industrial Development Authority - PA | Not applicable | Electric Distributor | Voting Member |
| Lexington Chenoa Wind Farm LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Liberty Electric Power, LLC | Dynegy Marketing and Trade, LLC | Generation Owner | Affiliate Member |
| Liberty Madison Storage LLC | Jupiter Power LLC | Other Supplier | Affiliate Member |
| Lightsource Renewable Energy Development, LLC | Not applicable | Other Supplier | Affiliate Member |
| Lightstone Marketing LLC | Parkway Generation Operating LLC | Other Supplier | Affiliate Member |
| Lily Pond Solar, LLC | Waverly Solar, LLC | Other Supplier | Affiliate Member |
| Lincoln Generating Facility, LLC | Lincoln Generating Facility, LLC | Generation Owner | Voting Member |
| Linde Inc. | Linde Inc. | End-Use Customer | Voting Member |
| Linden VFT LLC | Linden VFT LLC | Transmission Owner | Voting Member |
| Lone Tree Wind, LLC | Leeward Asset Management, LLC | Generation Owner | Affiliate Member |
| Long Island Lighting Company dba LIPA | Not applicable | Other Supplier | Voting Member |
| Long Ridge Energy Generation LLC | Not applicable | Generation Owner | Voting Member |
| Longview Power, LLC | Not applicable | Generation Owner | Voting Member |
| Louisville Gas and Electric Company/Kentucky Utilities Company | PPL Electric Utilities Corporation d/b/a PPL Utilities | Transmission Owner | Affiliate Member |
| Lyons Solar, LLC | Not applicable | Generation Owner | Voting Member |
| MAG Energy Solutions, Inc. | Not applicable | Other Supplier | Voting Member |
| MC Project Company LLC | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| MC Squared Energy Services, LLC | Wolverine Holdings, L.P. | Other Supplier | Affiliate Member |
| MCG Energy Solutions, LLC | Not applicable | None | Associate |
| MFT Energy US 1 LLC | Not applicable | Other Supplier | Voting Member |
| MP2 Energy LLC | Shell Energy North America (US), L.P. | Other Supplier | Affiliate Member |
| MP2 Energy NE LLC dba Shell Energy Solutions | Shell Energy North America (US), L.P. | Other Supplier | Affiliate Member |
| MPCF I, LLC | Mosaic Power, LLC | Other Supplier | Affiliate Member |
| MPower Energy NJ LLC | Not applicable | Other Supplier | Voting Member |
| MRP ELGIN LLC | Big Sandy Peaker Plant, LLC | Generation Owner | Affiliate Member |
| MRP ROCKY ROAD LLC | Big Sandy Peaker Plant, LLC | Generation Owner | Affiliate Member |
| Macquarie Energy LLC | Wheelabrator Falls Inc. | Other Supplier | Affiliate Member |
| Macquarie Energy Trading LLC | Wheelabrator Falls Inc. | Other Supplier | Affiliate Member |
| Madison Fields Solar Project, LLC | Shell Energy North America (US), L.P. | Generation Owner | Affiliate Member |
| Mahoning Creek Hydroelectric Company, LLC | Cube Hydro Partners, LLC | Generation Owner | Affiliate Member |
| Major Energy Electric Services, LLC | Spark Energy, LLC | Other Supplier | Affiliate Member |
| Manatee Transmission LLC | Manatee Transmission LLC | Other Supplier | Voting Member |
| Maple Analytics, LLC | Not applicable | Other Supplier | Voting Member |
| Marginal Unit, Inc. | Not applicable | None | Associate |
| Marina Energy, LLC | South Jersey Energy Company | Generation Owner | Affiliate Member |
| Martins Creek, LLC | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| Marubeni Power International, Inc. | SmartestEnergy US LLC | Generation Owner | Affiliate Member |
| Maryland Office of People's Counsel | Not applicable | End-Use Customer | Ex Officio Member |
| Maryland Solar LLC | Not applicable | Generation Owner | Voting Member |
| Meadow Lake Wind Farm II LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Meadow Lake Wind Farm III, LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Meadow Lake Wind Farm IV, LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Meadow Lake Wind Farm V LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Meadow Lake Wind Farm VI LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Meadow Lake Wind Farm, LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Median Energy Corp. | Median Energy Corp. | Other Supplier | Voting Member |
| Median Energy IL LLC | Median Energy Corp. | Other Supplier | Affiliate Member |
| Median Energy PA LLC | Median Energy Corp. | Other Supplier | Affiliate Member |
| Mega Energy of Illinois, LLC | WP&G Holdings, LLC | Other Supplier | Affiliate Member |
| Mehoopany Wind Energy LLC | BP Energy Company | Generation Owner | Affiliate Member |
| Mendota Hills, LLC | Leeward Asset Management, LLC | Generation Owner | Affiliate Member |
| Mercuria Energy America, LLC | Mercuria Energy America, LLC | Other Supplier | Voting Member |
| Mercuria SJAK Trading, LLC | Mercuria Energy America, LLC | Other Supplier | Affiliate Member |
| Merrill Lynch Commodities, Inc. | Merrill Lynch Commodities, Inc. | Other Supplier | Voting Member |
| Messer Energy Services, Inc. | Messer LLC | End-Use Customer | Affiliate Member |
| Messer LLC | Messer LLC | End-Use Customer | Voting Member |
| MeterGenius, Inc. | Not applicable | Other Supplier | Voting Member |
| Metropolitan Edison Company | Monongahela Power Company d/b/a Allegheny Power | Electric Distributor | Affiliate Member |
| Miami Valley Lighting, LLC | Dayton Power & Light Company (The) | End-Use Customer | Affiliate Member |
| Mianus River Energy, LLC | Mianus River Energy, LLC | Other Supplier | Voting Member |
| Michigan Department of Attorney General, Environment, Natural Resources, & Agriculture Division | Not applicable | End-Use Customer | Ex Officio Member |
| Michigan Public Power Agency | Not applicable | Electric Distributor | Voting Member |
| Mid-Atlantic Interstate Transmission, LLC | Monongahela Power Company d/b/a Allegheny Power | Transmission Owner | Affiliate Member |
| MidAmerican Energy Company | MidAmerican Energy Company | Other Supplier | Voting Member |
| MidAmerican Energy Services, LLC | MidAmerican Energy Company | Other Supplier | Affiliate Member |
| MidAtlantic Power Partners, LLC | Not applicable | Other Supplier | Voting Member |
| Middlesex County Utilities Authority | Not applicable | End-Use Customer | Voting Member |
| Midwest Energy Trading East, LLC | Castleton Commodities Merchant Trading L.P. | Other Supplier | Affiliate Member |
| Midwest Generation, LLC | NRG Business Marketing LLC | Generation Owner | Affiliate Member |
| Milan Energy LLC | Tenaska Power Services Co. | Generation Owner | Affiliate Member |
| Milford Solar LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Mississippi Power Company | Southern Power Company | Other Supplier | Affiliate Member |
| Mitsui & Co. Energy Marketing and Services (USA), Inc. | Mitsui Bussan Commodities Ltd. | Other Supplier | Affiliate Member |
| Mitsui Bussan Commodities Ltd. | Mitsui Bussan Commodities Ltd. | Other Supplier | Voting Member |
| Modo Energy Inc. | Not applicable | None | Associate |
| Monongahela Power Company d/b/a Allegheny Power | Monongahela Power Company d/b/a Allegheny Power | Transmission Owner | Voting Member |
| Monterey MA LLC | Monterey MA LLC | Other Supplier | Voting Member |
| Montour, LLC | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| Montpelier Generating Station, LLC | Eagle Point Power Generation LLC | Generation Owner | Affiliate Member |
| Monument Generating Station, LLC | Eagle Point Power Generation LLC | Generation Owner | Affiliate Member |
| Morgan Stanley Capital Group Inc. | Morgan Stanley Capital Group Inc. | Other Supplier | Voting Member |
| Morgan Stanley Services Group Inc. | Morgan Stanley Capital Group Inc. | Other Supplier | Affiliate Member |
| Morningstar Commodity Data, Inc. | Not applicable | None | Associate |
| Morris Cogeneration, LLC | Morris Cogeneration, LLC | Generation Owner | Voting Member |
| Mosaic Power, LLC | Mosaic Power, LLC | Other Supplier | Voting Member |
| Moxie Freedom LLC | Moxie Freedom LLC | Generation Owner | Voting Member |
| Mt. Carmel Cogen, Inc. | Not applicable | Generation Owner | Voting Member |
| NDC Partners, LLC | Not applicable | Other Supplier | Voting Member |
| NEPM II, LLC | NextEra Energy Marketing, LLC | Other Supplier | Affiliate Member |
| NG Renewables Energy Marketing, LLC | Green River Holdings, LLC | Other Supplier | Affiliate Member |
| NJR Clean Energy Ventures Corporation | NJR Clean Energy Ventures Corporation | Generation Owner | Voting Member |
| NJR Clean Energy Ventures II Corporation | NJR Clean Energy Ventures Corporation | Generation Owner | Affiliate Member |
| NJR Clean Energy Ventures III Corporation | NJR Clean Energy Ventures Corporation | Generation Owner | Affiliate Member |
| NRG Business Marketing LLC | NRG Business Marketing LLC | Other Supplier | Voting Member |
| NRG Curtailment Solutions, Inc. | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| NRG Power Marketing LLC | NRG Business Marketing LLC | Generation Owner | Affiliate Member |
| NTherm, LLC | Not applicable | Other Supplier | Voting Member |
| National Gas & Electric, LLC | Spark Energy, LLC | Other Supplier | Affiliate Member |
| Nautilus Power, LLC | Essential Power Rock Springs, LLC | Generation Owner | Affiliate Member |
| NedPower Mount Storm, LLC | NedPower Mount Storm, LLC | Generation Owner | Voting Member |
| Neptune Regional Transmission System, LLC | Neptune Regional Transmission System, LLC | Transmission Owner | Voting Member |
| Nestlewood Solar I LLC | Nestlewood Solar I LLC | Generation Owner | Voting Member |
| New Covert Generating Company, LLC | Parkway Generation Operating LLC | Generation Owner | Affiliate Member |
| New Creek Wind LLC | New Creek Wind LLC | Generation Owner | Voting Member |
| New Jersey Division of Rate Counsel | Not applicable | End-Use Customer | Ex Officio Member |
| New Jersey Transit Corporation | Not applicable | Other Supplier | Voting Member |
| New Road Power, LLC | Open Road Renewables, LLC | Other Supplier | Affiliate Member |
| New Wave Energy, LLC | Not applicable | Other Supplier | Voting Member |
| New York Power Authority | Not applicable | Other Supplier | Voting Member |
| New York State Electric & Gas Corporation | Avangrid Renewables, LLC | Other Supplier | Affiliate Member |
| Newark Bay Cogeneration Partnership, L.P. | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| Newark Energy Center, LLC | Brookfield Renewable Trading and Marketing LP | Generation Owner | Affiliate Member |
| NextEra Energy Bluff Point, LLC | NextEra Energy Marketing, LLC | Generation Owner | Affiliate Member |
| NextEra Energy Marketing, LLC | NextEra Energy Marketing, LLC | Other Supplier | Voting Member |
| NextEra Energy Transmission MidAtlantic, Inc. | NextEra Energy Marketing, LLC | Transmission Owner | Affiliate Member |
| NextEra Energy Transmission, LLC | NextEra Energy Marketing, LLC | Other Supplier | Affiliate Member |
| NextPower III US Holdco Inc. | Not applicable | Generation Owner | Voting Member |
| Nextera Energy Services Illinois, LLC | NextEra Energy Marketing, LLC | Other Supplier | Affiliate Member |
| Nextera Energy Services New Jersey, LLC | NextEra Energy Marketing, LLC | Other Supplier | Affiliate Member |
| Nexus Energy Inc. | Not applicable | Other Supplier | Voting Member |
| Nodal Exchange, LLC | Not applicable | None | Associate |
| Nordic Energy Services, LLC | Not applicable | Other Supplier | Voting Member |
| North 301 Solar, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| North American Power and Gas, LLC | Calpine Energy Services, L.P. | Other Supplier | Affiliate Member |
| North Carolina Electric Membership Corporation | Not applicable | Electric Distributor | Voting Member |
| North Carolina Municipal Power Agency Number 1 | Not applicable | Other Supplier | Voting Member |
| North Hanover Solar W2-082, LLC | Altus Power, LLC | Generation Owner | Affiliate Member |
| Northampton Generating Company, L.P. | Olympus Power, LLC | Generation Owner | Affiliate Member |
| Northeast Maryland Waste Disposal Authority | Not applicable | Generation Owner | Voting Member |
| Northeastern REMC | Not applicable | Electric Distributor | Voting Member |
| Northern Illinois Municipal Power Agency | Not applicable | Electric Distributor | Voting Member |
| Northern Indiana Public Service Company | Not applicable | Other Supplier | Voting Member |
| Northern States Power Company | Not applicable | Other Supplier | Voting Member |
| Northern Virginia Electric Cooperative (NOVEC) | Not applicable | Electric Distributor | Voting Member |
| Northstar Trading Ltd. | Not applicable | Other Supplier | Voting Member |
| Northwest Ohio Wind, LLC | CMS Energy Resource Management Company | Generation Owner | Affiliate Member |
| NuEnergen, LLC | Not applicable | Other Supplier | Voting Member |
| O.H. Hutchings CT, LLC | Eagle Point Power Generation LLC | Generation Owner | Affiliate Member |
| OCI Solar Power, LLC | Not applicable | Generation Owner | Voting Member |
| OPEN ACCESS TECHNOLOGY INTERNATIONAL, INC. | Not applicable | None | Associate |
| Oak Trail Solar, LLC | Leeward Asset Management, LLC | Other Supplier | Affiliate Member |
| Octopus Energy LLC | Not applicable | Other Supplier | Voting Member |
| Office of the Attorney General, Kentucky | Not applicable | End-Use Customer | Ex Officio Member |
| Office of the People's Counsel for the District of Columbia | Not applicable | End-Use Customer | Ex Officio Member |
| Ohio Consumers' Counsel | Not applicable | End-Use Customer | Ex Officio Member |
| Ohio Edison Company | Monongahela Power Company d/b/a Allegheny Power | Electric Distributor | Affiliate Member |
| Ohio Power Company | Appalachian Power Company | Transmission Owner | Affiliate Member |
| Ohio Power Partners, LLC | Ohio Power Partners, LLC | Generation Owner | Voting Member |
| Ohio Valley Electric Corporation | Appalachian Power Company | Transmission Owner | Affiliate Member |
| Old Dominion Electric Cooperative | Old Dominion Electric Cooperative | Electric Distributor | Voting Member |
| Old Mission Energy Trading LLC | Not applicable | Other Supplier | Voting Member |
| Olympus Power, LLC | Olympus Power, LLC | Generation Owner | Voting Member |
| Ontario Power Generation Energy Trading, Inc. | Cube Hydro Partners, LLC | Other Supplier | Affiliate Member |
| Ontario Power Generation Inc. | Cube Hydro Partners, LLC | Other Supplier | Affiliate Member |
| Ontelaunee Power Operating Company, LLC | Dynegy Marketing and Trade, LLC | Generation Owner | Affiliate Member |
| Open Road Renewables, LLC | Open Road Renewables, LLC | Other Supplier | Voting Member |
| Oregon Clean Energy, LLC | Hill Top Energy Center, LLC | Generation Owner | Affiliate Member |
| Orennia US LLC | Not applicable | None | Associate |
| Orsted Onshore North America, LLC | Orsted Onshore North America, LLC | Generation Owner | Voting Member |
| Osaka Gas USA Corporation | Not applicable | None | Associate |
| Owensboro Municipal Utilities | Not applicable | Other Supplier | Voting Member |
| Oxbow Creek Energy LLC | Tenaska Power Services Co. | Generation Owner | Affiliate Member |
| PALMco Power DC, LLC dba Indra Energy | PALMco Power NJ, LLC dba Indra Energy | Other Supplier | Affiliate Member |
| PALMco Power DE, LLC dba Indra Energy | PALMco Power NJ, LLC dba Indra Energy | Other Supplier | Affiliate Member |
| PALMco Power IL, LLC dba Indra Energy | PALMco Power NJ, LLC dba Indra Energy | Other Supplier | Affiliate Member |
| PALMco Power MD, LLC dba Indra Energy | PALMco Power NJ, LLC dba Indra Energy | Other Supplier | Affiliate Member |
| PALMco Power NJ, LLC dba Indra Energy | PALMco Power NJ, LLC dba Indra Energy | Other Supplier | Voting Member |
| PALMco Power PA, LLC dba Indra Energy | PALMco Power NJ, LLC dba Indra Energy | Other Supplier | Affiliate Member |
| PALMco Power VA, LLC | PALMco Power NJ, LLC dba Indra Energy | Other Supplier | Affiliate Member |
| PATH Allegheny Transmission Company, LLC | Monongahela Power Company d/b/a Allegheny Power | Transmission Owner | Affiliate Member |
| PATH West Virginia Transmission Company, LLC | Appalachian Power Company | Transmission Owner | Affiliate Member |
| PBF Power Marketing, LLC | Not applicable | End-Use Customer | Voting Member |
| PECO Energy Company | Exelon Business Services Company, LLC | Transmission Owner | Affiliate Member |
| PEI Power II, LLC | BP Energy Company | Generation Owner | Affiliate Member |
| PEI Power LLC | BP Energy Company | Generation Owner | Affiliate Member |
| PPL Electric Utilities Corporation d/b/a PPL Utilities | PPL Electric Utilities Corporation d/b/a PPL Utilities | Transmission Owner | Voting Member |
| PSEG Energy Resources & Trade LLC | Public Service Electric and Gas Company | Other Supplier | Affiliate Member |
| PSEG Energy Solutions LLC | Public Service Electric and Gas Company | Other Supplier | Affiliate Member |
| PSEG Nuclear LLC | Public Service Electric and Gas Company | Generation Owner | Affiliate Member |
| Pacific Summit Energy, LLC | Pacific Summit Energy, LLC | Other Supplier | Voting Member |
| Palladium Energy, LLC | Not applicable | None | Associate |
| Palm Energy LLC | Not applicable | Other Supplier | Voting Member |
| Panther Creek Power Operating, LLC | Olympus Power, LLC | Generation Owner | Affiliate Member |
| Park Power LLC | Not applicable | Other Supplier | Voting Member |
| Parkway Generation Operating LLC | Parkway Generation Operating LLC | Generation Owner | Voting Member |
| Patton Wind Farm, LLC | Vitol Inc. | Generation Owner | Affiliate Member |
| Paulding Wind Farm II, LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Paulding Wind Farm III LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Paulding Wind Farm IV LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Pay Less Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Peak Energy Capital LP | Peak Energy Capital LP | Other Supplier | Voting Member |
| Peakstone Energy, LLC | Peakstone Energy, LLC | Other Supplier | Voting Member |
| Pedricktown Cogeneration Company LP | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| Pegasus Energy Futures LLC | Not applicable | Other Supplier | Voting Member |
| Peninsula Power, LLC | Uncia Energy LP - Series B | Other Supplier | Affiliate Member |
| Penncat Corporation | Not applicable | Other Supplier | Voting Member |
| Pennoni Associates Inc. | Not applicable | Other Supplier | Voting Member |
| Pennsylvania Electric Company | Monongahela Power Company d/b/a Allegheny Power | Electric Distributor | Affiliate Member |
| Pennsylvania Grain Processing LLC | Not applicable | End-Use Customer | Voting Member |
| Pennsylvania Office of Consumer Advocate | Not applicable | End-Use Customer | Ex Officio Member |
| Pennsylvania Power Company | Monongahela Power Company d/b/a Allegheny Power | Electric Distributor | Affiliate Member |
| Pennsylvania Renewable Resources, Associates | Not applicable | Generation Owner | Voting Member |
| Perast Fund LP | Perast Fund LP | Other Supplier | Voting Member |
| Pharetram Energy Services, Ltd. | Not applicable | Other Supplier | Voting Member |
| Pharos Enterprise Intelligence LLC | Not applicable | None | Associate |
| Phillips 66 Energy Trading LLC | Not applicable | Other Supplier | Voting Member |
| Piedmont Energy Fund, L.P. | Not applicable | Other Supplier | Voting Member |
| Pine Gate Mid-Atlantic, LLC | Not applicable | Generation Owner | Voting Member |
| Pinesburg Solar LLC | Not applicable | Generation Owner | Voting Member |
| Pinnacle Power LLC | Summer Energy Midwest, LLC | Other Supplier | Affiliate Member |
| Pixelle Specialty Solutions LLC | Pixelle Specialty Solutions LLC | End-Use Customer | Voting Member |
| Plains Solar, LLC | Open Road Renewables, LLC | Other Supplier | Affiliate Member |
| Plant-E Corp. | Not applicable | Other Supplier | Voting Member |
| Polaris Power Services LLC | Not applicable | Other Supplier | Voting Member |
| Potomac Edison Company d/b/a Allegheny Power | Monongahela Power Company d/b/a Allegheny Power | Transmission Owner | Affiliate Member |
| Potomac Electric Power Company | Exelon Business Services Company, LLC | Electric Distributor | Affiliate Member |
| Potomac Energy Center, LLC | Hill Top Energy Center, LLC | Generation Owner | Affiliate Member |
| Power Analytics Software, Inc. | Not applicable | None | Associate |
| Power Supply Services, LLC | Not applicable | Generation Owner | Voting Member |
| Power Up Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Powervine Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Prairieland Energy, Inc. | Not applicable | End-Use Customer | Voting Member |
| Precept Power LLC | Not applicable | Other Supplier | Voting Member |
| Procter & Gamble Paper Products Company (The) | Not applicable | End-Use Customer | Voting Member |
| Prospect Power, LLC | Open Road Renewables, LLC | Other Supplier | Affiliate Member |
| Providence Heights Wind, LLC | Avangrid Renewables, LLC | Generation Owner | Affiliate Member |
| Provision Power and Gas, LLC | Not applicable | Other Supplier | Voting Member |
| Public Service Electric and Gas Company | Public Service Electric and Gas Company | Transmission Owner | Voting Member |
| Public Staff - North Carolina Utilities Commission | Not applicable | End-Use Customer | Ex Officio Member |
| Pure Energy USA IL, LLC | Pure Energy USA, LLC | Other Supplier | Affiliate Member |
| Pure Energy USA, LLC | Pure Energy USA, LLC | Other Supplier | Voting Member |
| Pure Energy, Inc. | Not applicable | Other Supplier | Voting Member |
| Quattro Energy LP | Altro Power LLC | Other Supplier | Affiliate Member |
| RES America Developments, Inc. | RES America Developments, Inc. | Generation Owner | Voting Member |
| REsurety, Inc. | Not applicable | None | Associate |
| RI-Corp. Development, Inc. | Jack Rich, Inc. d/b/a Anthracite Power & Light Company | Generation Owner | Affiliate Member |
| RPA Energy, Inc. | Not applicable | Other Supplier | Voting Member |
| RTR Energy Solutions LLC | Not applicable | None | Associate |
| RVA Energy, LLC | Not applicable | Other Supplier | Voting Member |
| RWE CLEAN ENERGY WHOLESALE SERVICES, INC. | RWE Clean Energy, LLC | Other Supplier | Affiliate Member |
| RWE Clean Energy Solutions, Inc. | RWE Clean Energy, LLC | Other Supplier | Affiliate Member |
| RWE Clean Energy, LLC | RWE Clean Energy, LLC | Generation Owner | Voting Member |
| Radford's Run Wind Farm, LLC | RWE Clean Energy, LLC | Generation Owner | Affiliate Member |
| Radiant Geospatial Solutions LLC | Not applicable | None | Associate |
| Rainbow Energy Marketing Corporation | Rainbow Energy Marketing Corporation | Other Supplier | Voting Member |
| Rainbow Energy Ventures LLC | Rainbow Energy Marketing Corporation | Other Supplier | Affiliate Member |
| Rausch Creek Electric Power Holdings, LLC | Rausch Creek Electric Power Holdings, LLC | Generation Owner | Voting Member |
| Rausch Creek Generation, LLC | Rausch Creek Electric Power Holdings, LLC | Generation Owner | Affiliate Member |
| Realgy, LLC | Not applicable | Other Supplier | Voting Member |
| Recurrent Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Red Oak Power, LLC | Not applicable | Generation Owner | Voting Member |
| Red Wolf TX2, LLC | Red Wolf TX2, LLC | Other Supplier | Voting Member |
| Refinitiv US LLC | Not applicable | None | Associate |
| Reliant Energy Northeast, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Renaissance Power & Gas, Inc. | Not applicable | Other Supplier | Voting Member |
| Renergy Inc. | Not applicable | Generation Owner | Voting Member |
| Renewable Energy Aggregators Inc. | Renewable Energy Aggregators Inc. | Generation Owner | Voting Member |
| Rensselaer Generating LLC | Castleton Commodities Merchant Trading L.P. | Other Supplier | Affiliate Member |
| ResCom Energy, LLC | ResCom Energy, LLC | Other Supplier | Voting Member |
| Residents Energy, LLC | IDT Energy, Inc. | Other Supplier | Affiliate Member |
| Respond Power, LLC | Spark Energy, LLC | Other Supplier | Affiliate Member |
| Rhei Energy Partners LP | Not applicable | Other Supplier | Voting Member |
| Richfield Solar Energy LLC | Invenergy Energy Management LLC | Other Supplier | Affiliate Member |
| Richland-Stryker Generation, LLC | Dynegy Marketing and Trade, LLC | Generation Owner | Affiliate Member |
| River Bay Commodities, LLC | Not applicable | Other Supplier | Voting Member |
| RiverCrest Power-South, LLC | Not applicable | Other Supplier | Voting Member |
| Riverside Generating Company, L.L.C. | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Riverstart Solar Park III LLC | EDP Renewables North America LLC | Other Supplier | Affiliate Member |
| Riverstart Solar Park LLC | EDP Renewables North America LLC | Generation Owner | Affiliate Member |
| Rochester Gas and Electric Corporation | Avangrid Renewables, LLC | Other Supplier | Affiliate Member |
| Rockfish Solar LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Rockland Electric Company | Rockland Electric Company | Transmission Owner | Voting Member |
| Rocky Road Power, LLC | Essential Power Rock Springs, LLC | Generation Owner | Affiliate Member |
| Rodan Energy Solutions (USA) Inc. | Not applicable | Other Supplier | Voting Member |
| Rolling Hills Generating, LLC | Rolling Hills Generating, LLC | Generation Owner | Voting Member |
| Rose Gold Solar, LLC | Leeward Asset Management, LLC | Other Supplier | Affiliate Member |
| Roseton Generating LLC | Castleton Commodities Merchant Trading L.P. | Other Supplier | Affiliate Member |
| Roth Rock Wind Farm, LLC | Not applicable | Generation Owner | Voting Member |
| Roundtop Energy LLC | Tenaska Power Services Co. | Generation Owner | Affiliate Member |
| Royal Bank of Canada | Royal Bank of Canada | Other Supplier | Voting Member |
| Rushmore Energy, LLC (new) | Not applicable | Other Supplier | Voting Member |
| S&P Global Inc. | Not applicable | None | Associate |
| S.C. Energy Partners LLC | Not applicable | Other Supplier | Voting Member |
| S.J. Energy Partners, Inc. | Not applicable | End-Use Customer | Voting Member |
| SESCO Enterprises, LLC | Not applicable | Other Supplier | Voting Member |
| SFE Energy, Inc. | SFE Energy, Inc. | Other Supplier | Voting Member |
| STATARB Investment, LLC | Not applicable | Other Supplier | Voting Member |
| SYSO Inc. | Not applicable | Other Supplier | Voting Member |
| Safe Harbor Water Power Corporation | Brookfield Renewable Trading and Marketing LP | Generation Owner | Affiliate Member |
| Sanitas Power, LLC | Not applicable | Other Supplier | Voting Member |
| Santanna Energy Services | Not applicable | Other Supplier | Voting Member |
| Saracen Energy East LP | Saracen Energy East LP | Other Supplier | Voting Member |
| Saracen Energy Midwest LP | Saracen Energy East LP | Other Supplier | Affiliate Member |
| Saracen Energy West LP | Saracen Energy East LP | Other Supplier | Affiliate Member |
| Saracen Power LP | Saracen Energy East LP | Other Supplier | Affiliate Member |
| Saugatuck River Power Trading LLC | Saugatuck River Power Trading LLC | Other Supplier | Voting Member |
| Schuylkill Energy Resources, Inc. | Jack Rich, Inc. d/b/a Anthracite Power & Light Company | Generation Owner | Affiliate Member |
| Scout Storage LLC | Jupiter Power LLC | Other Supplier | Affiliate Member |
| Scrubgrass Reclamation Company, L.P. | Olympus Power, LLC | Generation Owner | Affiliate Member |
| Scylla Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Second Foundation US Trading, LLC | Not applicable | Other Supplier | Voting Member |
| Seneca Generation, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Seneca Trading LLC | Manatee Transmission LLC | Other Supplier | Affiliate Member |
| Seven Islands Environmental Solutions, LLC | Not applicable | Generation Owner | Voting Member |
| Severn River Power LLC | Guzman Energy LLC | Other Supplier | Affiliate Member |
| Seward Generation, LLC | Seward Generation, LLC | Generation Owner | Voting Member |
| Shell Energy North America (US), L.P. | Shell Energy North America (US), L.P. | Other Supplier | Voting Member |
| Shipley Choice, LLC | Shipley Choice, LLC | Other Supplier | Voting Member |
| Sidney, LLC | Eagle Point Power Generation LLC | Generation Owner | Affiliate Member |
| Siemens Industry, Inc. | Not applicable | Other Supplier | Voting Member |
| Silver Run Electric, LLC | Rolling Hills Generating, LLC | Transmission Owner | Affiliate Member |
| Singularity Energy, Inc. | Not applicable | None | Associate |
| SmartEnergy Holdings, LLC | Not applicable | Other Supplier | Voting Member |
| SmartestEnergy US LLC | SmartestEnergy US LLC | Other Supplier | Voting Member |
| SociVolta Inc. | Not applicable | Other Supplier | Voting Member |
| Sol Madison Solar, LLC | Virginia Electric & Power Company | Other Supplier | Affiliate Member |
| Solios Power Mid-Atlantic Trading LLC | Solios Power Mid-Atlantic Trading LLC | Other Supplier | Voting Member |
| South Bay Energy Corp. | Not applicable | Other Supplier | Voting Member |
| South Field Energy LLC | Carroll County Energy LLC | Generation Owner | Affiliate Member |
| South Jersey Energy Company | South Jersey Energy Company | Other Supplier | Voting Member |
| Southampton Solar LLC | Virginia Electric & Power Company | Generation Owner | Affiliate Member |
| Southeastern Chester County Refuse Authority | Not applicable | Other Supplier | Voting Member |
| Southeastern Power Administration | Not applicable | Other Supplier | Voting Member |
| Southern Indiana Gas and Electric Company d/b/a Vectren Power Supply Inc. | Not applicable | Other Supplier | Voting Member |
| Southern Maryland Electric Cooperative, Inc. | Not applicable | Electric Distributor | Voting Member |
| Southern Power Company | Southern Power Company | Other Supplier | Voting Member |
| Spark Energy, LLC | Spark Energy, LLC | Other Supplier | Voting Member |
| Spartacus Energy Services LLC | Not applicable | Other Supplier | Voting Member |
| Spotlight Power LLC | Not applicable | Other Supplier | Voting Member |
| Spring Energy RRH, LLC dba Spring Power & Gas | Spring Energy RRH, LLC dba Spring Power & Gas | Other Supplier | Voting Member |
| Spruance Operating Services, LLC | Not applicable | Generation Owner | Voting Member |
| Spruce Power Trading, LLC | Not applicable | Other Supplier | Voting Member |
| St. Joseph Energy Center, LLC | Hill Top Energy Center, LLC | Generation Owner | Affiliate Member |
| Standard Gas & Electric, LLC | Not applicable | Other Supplier | Voting Member |
| Star Jasmine Houston LLC | Not applicable | Other Supplier | Voting Member |
| Statkraft US LLC | Not applicable | Other Supplier | Voting Member |
| Sterling Partners Energy Investors LLC | Not applicable | Other Supplier | Voting Member |
| Stones DR, LLC | Rolling Hills Generating, LLC | Other Supplier | Affiliate Member |
| Stony Creek Wind Farm, LLC | RWE Clean Energy, LLC | Generation Owner | Affiliate Member |
| Stream Energy Columbia, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Stream Energy Delaware, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Stream Energy Illinois, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Stream Energy Maryland, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Stream Energy New Jersey, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Stream Energy Pennsylvania, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Stream Ohio Gas & Electric, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Strom Power, LLC | Not applicable | Other Supplier | Voting Member |
| Summer Energy Midwest, LLC | Summer Energy Midwest, LLC | Other Supplier | Voting Member |
| Summit Energy Services, Inc. | Not applicable | None | Associate |
| Summit Farms Solar, LLC | Virginia Electric & Power Company | Generation Owner | Affiliate Member |
| Sun Tribe Development LLC | Not applicable | Generation Owner | Voting Member |
| SunCoke Energy, Inc. | Not applicable | Generation Owner | Voting Member |
| SunSea Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Sunflower Solar LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Sunshaw Power Trading, LLC | Not applicable | Other Supplier | Voting Member |
| Susquehanna Nuclear, LLC | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| Sustaining Power Solutions LLC | EDP Renewables North America LLC | Other Supplier | Affiliate Member |
| Syncarpha Solar, LLC | Not applicable | Generation Owner | Voting Member |
| TC Energy Marketing Inc. | Not applicable | Other Supplier | Voting Member |
| TEC Energy Inc. | Not applicable | Other Supplier | Voting Member |
| TEC Trading, Inc. | Old Dominion Electric Cooperative | Other Supplier | Affiliate Member |
| THG Energy Solutions, LLC | Not applicable | None | Associate |
| TWE Myrtle Solar Project, LLC | Virginia Electric & Power Company | Generation Owner | Affiliate Member |
| Tait Electric Generating Station, LLC | Eagle Point Power Generation LLC | Generation Owner | Affiliate Member |
| Talen Energy Marketing, LLC | Talen Energy Marketing, LLC | Generation Owner | Voting Member |
| Tangent Energy Solutions, Inc. | Not applicable | Other Supplier | Voting Member |
| TarHawk Energy, LP | Inertia Power I, LLC | Other Supplier | Affiliate Member |
| Tatanka Wind Power, LLC | Acciona Energy North America Corporation | Other Supplier | Affiliate Member |
| Tenaska Pennsylvania Partners, LLC | Tenaska Power Services Co. | Generation Owner | Affiliate Member |
| Tenaska Power Management, LLC | Tenaska Power Services Co. | Other Supplier | Affiliate Member |
| Tenaska Power Services Co. | Tenaska Power Services Co. | Generation Owner | Voting Member |
| Tenaska Virginia Partners, L.P. | Tenaska Power Services Co. | Generation Owner | Affiliate Member |
| Tennessee Valley Authority (The) | Not applicable | Other Supplier | Voting Member |
| TerraForm IWG Acquisition Holdings II, LLC | Brookfield Renewable Trading and Marketing LP | Other Supplier | Affiliate Member |
| Tesla, Inc. | Not applicable | None | Associate |
| Texas Retail Energy, LLC | Not applicable | Other Supplier | Voting Member |
| The Brattle Group, Inc. | Not applicable | None | Associate |
| The City of Geneva | Not applicable | Electric Distributor | Voting Member |
| The Hartz Group | Not applicable | End-Use Customer | Voting Member |
| The Highlands Energy Group, LLC | Not applicable | Other Supplier | Voting Member |
| Think Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Thordin ApS | Not applicable | Other Supplier | Voting Member |
| Thurmont Municipal Light Company | Not applicable | Electric Distributor | Voting Member |
| Tidal Energy Marketing (U.S.) L.L.C. | New Creek Wind LLC | Other Supplier | Affiliate Member |
| Tilton Energy LLC | Lincoln Generating Facility, LLC | Generation Owner | Affiliate Member |
| Timber Road Solar Park LLC | EDP Renewables North America LLC | Other Supplier | Affiliate Member |
| TimberRock Consulting LLC | Not applicable | None | Associate |
| Tios Capital, LLC | Not applicable | Other Supplier | Voting Member |
| Titan Gas and Power | Not applicable | Other Supplier | Voting Member |
| Todd Solar LLC | Invenergy Energy Management LLC | Generation Owner | Affiliate Member |
| Toledo Edison Company | Monongahela Power Company d/b/a Allegheny Power | Electric Distributor | Affiliate Member |
| Tomorrow Energy Corp | Not applicable | Other Supplier | Voting Member |
| Town Square Energy East, LLC | IDT Energy, Inc. | Other Supplier | Affiliate Member |
| Town of Berlin, Maryland | Not applicable | Electric Distributor | Voting Member |
| Town of Williamsport (The) | Not applicable | Electric Distributor | Voting Member |
| Trafigura Trading LLC | Not applicable | Other Supplier | Voting Member |
| TrailStone Energy Marketing, LLC | Talen Energy Marketing, LLC | Other Supplier | Affiliate Member |
| Trans-Allegheny Interstate Line Company | Monongahela Power Company d/b/a Allegheny Power | Transmission Owner | Affiliate Member |
| TransAlta Energy Marketing (U.S.) Inc. | TransAlta Energy Marketing (U.S.) Inc. | Other Supplier | Voting Member |
| Transource Energy, LLC | Appalachian Power Company | Transmission Owner | Affiliate Member |
| Transource Maryland, LLC | Appalachian Power Company | Transmission Owner | Affiliate Member |
| Transource Pennsylvania, LLC | Appalachian Power Company | Transmission Owner | Affiliate Member |
| Transource West Virginia, LLC | Appalachian Power Company | Transmission Owner | Affiliate Member |
| Tri Global Energy, LLC | Not applicable | Other Supplier | Voting Member |
| Tri-County Rural Electric Cooperative, Inc. | Wellsboro Electric Company | Other Supplier | Affiliate Member |
| TriEagle Energy, L.P. | Dynegy Marketing and Trade, LLC | Other Supplier | Affiliate Member |
| TrueLight Commodities, LLC | TrueLight Commodities, LLC | Other Supplier | Voting Member |
| Trustees of the University of Pennsylvania | Not applicable | End-Use Customer | Voting Member |
| Tupelo Solar I, LLC | Open Road Renewables, LLC | Other Supplier | Affiliate Member |
| Twin Eagle Resource Management, LLC | Twin Eagle Resource Management, LLC | Other Supplier | Voting Member |
| Twin Ridges LLC | Vitol Inc. | Generation Owner | Affiliate Member |
| Tymeware Inc. | Not applicable | None | Associate |
| Tyne Hill Investments, LP | Hemsworth Capital, L.P. | Other Supplier | Affiliate Member |
| Tyr Energy, LLC | Tyr Energy, LLC | Other Supplier | Voting Member |
| UGI Development Company | UGI Energy Services, LLC | Generation Owner | Affiliate Member |
| UGI Energy Services, LLC | UGI Energy Services, LLC | Other Supplier | Voting Member |
| UGI Utilities, Inc. | UGI Energy Services, LLC | Transmission Owner | Affiliate Member |
| UN-School House Holding LLC | Harts Mill Solar, LLC | Other Supplier | Affiliate Member |
| Uncia Energy LP - Series B | Uncia Energy LP - Series B | Other Supplier | Voting Member |
| Union Electric Company d/b/a Ameren Missouri | Not applicable | Other Supplier | Voting Member |
| Union Ridge Solar, LLC | Leeward Asset Management, LLC | Other Supplier | Affiliate Member |
| University Park Energy, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| Urban Grid Solar Projects, LLC | Brookfield Renewable Trading and Marketing LP | Other Supplier | Affiliate Member |
| V3 Commodities Group, LLC | V3 Commodities Group, LLC | Other Supplier | Voting Member |
| VCIOM, LLC | Not applicable | Other Supplier | Voting Member |
| VECO Power Trading, LLC | DC Energy, LLC | Other Supplier | Affiliate Member |
| Velocity American Energy Master I, L.P. | Not applicable | Other Supplier | Voting Member |
| Verde Energy USA DC, LLC | Spark Energy, LLC | Other Supplier | Affiliate Member |
| Verde Energy USA Illinois, LLC | Spark Energy, LLC | Other Supplier | Affiliate Member |
| Verde Energy USA Maryland, LLC | Spark Energy, LLC | Other Supplier | Affiliate Member |
| Verde Energy USA Ohio, LLC | Spark Energy, LLC | Other Supplier | Affiliate Member |
| Verde Energy USA, Inc. | Spark Energy, LLC | Other Supplier | Affiliate Member |
| Vesper Energy Development LLC | Not applicable | None | Associate |
| Vineland Municipal Electric Utility | Not applicable | Electric Distributor | Voting Member |
| Virginia Division of Consumer Counsel | Not applicable | End-Use Customer | Ex Officio Member |
| Virginia Electric & Power Company | Virginia Electric & Power Company | Transmission Owner | Voting Member |
| Virginia Solar 2017 Projects LLC | Virginia Electric & Power Company | Generation Owner | Affiliate Member |
| Viribus Fund LP | Not applicable | Other Supplier | Voting Member |
| Viridian Energy Ohio LLC | Dynegy Marketing and Trade, LLC | Other Supplier | Affiliate Member |
| Viridian Energy PA, LLC | Dynegy Marketing and Trade, LLC | Other Supplier | Affiliate Member |
| Viridity Energy Solutions Inc. | Viridity Energy Solutions Inc. | Generation Owner | Voting Member |
| Vista Energy Marketing, L.P. | Not applicable | Other Supplier | Voting Member |
| Vitol Inc. | Vitol Inc. | Generation Owner | Voting Member |
| Vitol PA Wind Marketing LLC | Vitol Inc. | Other Supplier | Affiliate Member |
| Voltus, Inc. | Not applicable | Other Supplier | Voting Member |
| WGL Energy Services, Inc. | Not applicable | Other Supplier | Voting Member |
| WM Renewable Energy, L.L.C. | Not applicable | Generation Owner | Voting Member |
| WP&G Holdings, LLC | WP&G Holdings, LLC | Other Supplier | Voting Member |
| WPPI Energy | Not applicable | Other Supplier | Voting Member |
| Wabash Valley Power Association, Inc. | Not applicable | Electric Distributor | Voting Member |
| Walden Renewables Development LLC | Not applicable | Other Supplier | Voting Member |
| Walleye Power, LLC | Parkway Generation Operating LLC | Generation Owner | Affiliate Member |
| Walnut Ridge Wind, LLC | MidAmerican Energy Company | Generation Owner | Affiliate Member |
| Waterford Power, LLC | Parkway Generation Operating LLC | Generation Owner | Affiliate Member |
| WattTime Corporation | Not applicable | None | Associate |
| Waverly Solar, LLC | Waverly Solar, LLC | Other Supplier | Voting Member |
| Wellsboro Electric Company | Wellsboro Electric Company | Electric Distributor | Voting Member |
| West Deptford Energy, LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| West Penn Power Company d/b/a Allegheny Power | Monongahela Power Company d/b/a Allegheny Power | Transmission Owner | Affiliate Member |
| West Virginia Consumer Advocate Division | Not applicable | End-Use Customer | Ex Officio Member |
| WestRock MWV, LLC | Not applicable | End-Use Customer | Voting Member |
| Western Reserve Energy Services, LLC | Not applicable | Other Supplier | Voting Member |
| Wheelabrator Baltimore, L.P. | Wheelabrator Falls Inc. | Generation Owner | Affiliate Member |
| Wheelabrator Falls Inc. | Wheelabrator Falls Inc. | Generation Owner | Voting Member |
| Wheelabrator Frackville Energy Company Inc. | Wheelabrator Falls Inc. | Generation Owner | Affiliate Member |
| Wheelabrator Gloucester Company, L.P. | Wheelabrator Falls Inc. | Generation Owner | Affiliate Member |
| Wheelabrator Portsmouth, Inc. | Wheelabrator Falls Inc. | Generation Owner | Affiliate Member |
| Wheeling Power Company | Appalachian Power Company | Transmission Owner | Affiliate Member |
| White Peak Energy LLC | Not applicable | Other Supplier | Voting Member |
| Whitetail Solar 1, LLC | BP Energy Company | Generation Owner | Affiliate Member |
| Whitetail Solar 2, LLC | BP Energy Company | Generation Owner | Affiliate Member |
| Whitetail Solar 3, LLC | BP Energy Company | Generation Owner | Affiliate Member |
| Whitmore Solar, LLC | Open Road Renewables, LLC | Other Supplier | Affiliate Member |
| Whitney Hill Wind Power, LLC | Enel X North America, Inc. | Generation Owner | Affiliate Member |
| Wildcat Wind Farm I, LLC | RWE Clean Energy, LLC | Generation Owner | Affiliate Member |
| Wilkinson Solar LLC | Virginia Electric & Power Company | Generation Owner | Affiliate Member |
| Willey Battery Utility, LLC | Pacific Summit Energy, LLC | Generation Owner | Affiliate Member |
| Willowbrook Solar I, LLC | RWE Clean Energy, LLC | Other Supplier | Affiliate Member |
| WinPower LLC | Not applicable | Other Supplier | Voting Member |
| Wisconsin Power and Light Company | Alliant Energy Corporate Services, Inc. | Other Supplier | Affiliate Member |
| Wolf Hills Energy, LLC | Big Sandy Peaker Plant, LLC | Generation Owner | Affiliate Member |
| Wolf Run Energy LLC | Tenaska Power Services Co. | Generation Owner | Affiliate Member |
| Wolverine Holdings, L.P. | Wolverine Holdings, L.P. | Other Supplier | Voting Member |
| Wolverine Power Supply Cooperative, Inc. | Not applicable | Other Supplier | Voting Member |
| Wolverine Trading, LLC | Wolverine Holdings, L.P. | Other Supplier | Affiliate Member |
| Wrigley Capital LLC | Not applicable | Other Supplier | Voting Member |
| Wyandot Solar LLC | Rolling Hills Generating, LLC | Generation Owner | Affiliate Member |
| XO Energy MA, L.P. | XO Energy MA, L.P. | Other Supplier | Voting Member |
| XO Energy MA2, L.P. | XO Energy MA, L.P. | Other Supplier | Affiliate Member |
| XOOM Energy Ohio, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| XOOM Energy Washington D.C., LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Xoom Energy Maryland, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Xoom Energy New Jersey, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Xoom Energy, LLC | NRG Business Marketing LLC | Other Supplier | Affiliate Member |
| Yankee Street, LLC | Eagle Point Power Generation LLC | Generation Owner | Affiliate Member |
| Yellow Jacket Energy, LLC | Diamond State Generation Partners, LLC | Generation Owner | Affiliate Member |
| Yes Energy LLC | Not applicable | None | Associate |
| York County Solid Waste and Refuse Authority | Not applicable | Generation Owner | Voting Member |
| York Generation Company, LLC | Talen Energy Marketing, LLC | Generation Owner | Affiliate Member |
| York Haven Power Company, LLC | Cube Hydro Partners, LLC | Generation Owner | Affiliate Member |
| Z&F Consulting, Inc. | Z&F Consulting, Inc. | Generation Owner | Voting Member |
| Zongyi Solar America Co., Ltd. | Not applicable | Generation Owner | Voting Member |
| kWantix Trading Fund I, LP | Not applicable | Other Supplier | Voting Member |
| sPower Energy Marketing, LLC | Dayton Power & Light Company (The) | Generation Owner | Affiliate Member |