- Aces Power Marketing
- AEP Energy Partners Inc
- AEP Energy Partners LP
- AEP Energy Services Inc
- AEP Service Corp as agent for AEP's Eastern Operating Companies
- AEP Service Corp as agent for Appalachian Power Company
- AEP Service Corp as agent for Ohio Power
- AEP Service Corp as agent for Public Service Company of Oklahoma
- AEP Service Corp as agent for Southwestern Electric Power Company
- AEP Services Corp
- AEP Services Corp As Agent For Columbus Southern Power Company
- AEP Services Corp As Agent For Indiana Michigan Power Company
- AGR Trading SPC
- Aitken Creek Gas Storage ULC
- Allegheny Energy Supply Company LLC
- Ameren Energy Fuels & Services Company
- Ameren Energy Fuels & Services Company as agent for AUE, AEGC, and AERGC
- Ameren Energy Fuels & Services Company as agent for Union Electric Company
- Ameren Energy Inc
- Ameren Energy Inc as agent for AUE
- Ameren Energy Inc as agent for AUE AEGC
- Ameren Energy Inc as agent for Union Electric Co
- Ameren Energy Marketing Company
- American Electric Power Service Corp
- American Electric Power Service Corporation as agent for the Operating Companies
- Arizona Electric Power Cooperative, Inc.
- Arizona Public Service Company
- ATMOS Energy Marketing LLC
- Barclays Bank PLC
- Battalion Capital Management, LLC
- Battalion Master Fund, Ltd.
- Bear Energy LP
- Bear Energy LP 2
- Big Rivers Electric Corp
- BNP Paribas Energy Trading Canada Corp.
- BNP Paribas Energy Trading GP
- BP Canada Energy Company
- BP Canada Energy Marketing Corp
- BP Corporation North America Inc
- BP Energy Company
- BP Products North America Inc.
- Brazos Electric Power Cooperative Inc
- Brookfield Energy Marketing Inc.
- Brookfield Energy Marketing LP
- Burj Petroleum Commodities Ltd.
- CalBear Energy LP
- Calpine Energy Services LP
- Calpine Energy Services LP as agent for Pacific Summit Energy LLC
- Cargill Energy Trading Canada Inc
- Cargill Inc
- Cargill Inc Natural Gas Trading
- Cargill Ltd
- Cargill Ltd Natural Gas Trading
- Cargill Power Markets LLC
- Cedric D. Bell LLC
- Centaurus Commodity Tracking Fund LP
- Centaurus Energy Master Fund LP
- Chevron Alberta Gas Storage ULC
- Chevron Canada Resources
- Chevron Natural Gas, a division of Chevron USA Inc.
- Chevron USA Inc.
- Chicago Trading Company, LLC
- Citi Group Energy Canada ULC
- Citibank National Association
- Citigroup Energy Inc
- City of Glendale
- City of Roseville
- City Of Tacoma Department Of Public Utilities Light Division DBA Tacoma Power
- ConocoPhillips Company
- Constellation Energy Commodities Group Inc
- Coral Energy Canada Inc
- Coral Energy Holding LP
- Coral Energy Resources LP
- Coral Power LLC
- CP Energy Marketing (US) Inc.
- CP Energy Marketing L.P.
- Credit Suisse Energy - Proprietary
- Credit Suisse Energy (Canada), Ltd.
- Credit Suisse Energy LLC
- Credit Suisse International
- CTC Energy LLC
- DB Commodities Canada Ltd.
- DB Energy Trading LLC
- DC Energy LLC
- DC Energy NEX, LLC
- Delaware Municipal Electric Corp
- Deutsche Bank AG
- Deutsche Bank AG, London
- Deutsche Bank London
- Deutsche Bank Trust Company Americas
- Direct Energy LP
- Direct Energy Marketing Ltd
- Dominion Energy Marketing Inc
- Draxis Energy Management LP
- Draxis Energy Master Fund, Ltd.
- DRW Commodities Inc
- DRW Commodities LLC
- DRW Commodities Trading LLC
- DTE Energy Trading Inc
- Duke Energy Commercial Asset Management, Inc.
- Duke Energy Indiana Inc
- Duke Energy Kentucky
- Duke Energy Ohio Inc
- Dynegy Gas Imports LLC
- Dynegy Marketing and Trade
- Dynegy Marketing and Trade, LLC
- Dynegy Midwest Generation, LLC
- Dynegy Power Marketing, LLC
- Dynegy Power, LLC
- Eagle Energy Partners I LP
- East Kentucky Power Cooperative
- EDF Trading North America, LLC
- Elustria Capital Partners Master Fund LP
- Energy America LLC
- Epic Merchant Energy NX, LP
- Exelon Generation Company LLC
- FB Energy Canada Corp
- First Capitol Risk Management, LLC
- Fortis Energy Marketing & Trading GP
- FPL Energy Power Marketing Inc
- Freepoint Commodities LLC
- GenOn Energy Management, LLC
- GenOn Power Midwest, LP
- GenOn Power Operating Services Midwest, Inc.
- GenOn REMA, LLC
| - GenOn West, LP
- Gila River Power LP
- Glencore Commodities Ltd
- Glencore Commodities Ltd - London
- Glencore Commodities Ltd Stamford Branch
- Glencore Ltd
- Glencore Singapore Pte. Ltd.
- Great River Energy
- Hoosier Energy Rural Electric Coop Inc
- HQ Energy Marketing Inc
- HQ Energy Services US Inc
- IBERDROLA Renewables Inc
- IGI Resources Inc
- J. Aron & Company
- JP Morgan Ventures Energy Corporation
- Kottke Associates LLC
- LDH Energy Opportunities Master Fund LP by its authorized representative LDH Energy Advisors LLC
- Lehman Brothers Commodity Services Inc
- Levante Capital LLC
- LG&E Energy Marketing Inc
- Lochridge Energy Master, Ltd.
- Lochridge Investment Advisors, LLC
- Louis Dreyfus Energy Canada LP
- Louis Dreyfus Energy Services LP
- Luminant Energy Company LLC
- Macquarie Bank Ltd
- Macquarie Cook Energy Canada Ltd
- Macquarie Cook Energy LLC
- Macquarie Cook Power Inc
- Macquarie Energy Canada Ltd.
- Macquarie Energy LLC
- Macquarie Futures USA Inc.
- Macquarie Inc.
- Marquette Partners LP
- Merrill Lynch Capital Services Inc
- Merrill Lynch Commodities Canada ULC
- Merrill Lynch Commodities Inc
- Merrill Lynch International
- Mitsui & Co. Commodity Risk Management Ltd.
- Mitsui & Company Energy Risk Management Ltd
- Monongahela Power dba Allegheny Power
- Morgan Stanley Capital Group Inc
- NASDAQ OMX Commodities Clearing - Contract Merchant LLC
- NASDAQ OMX Commodities Clearing - Delivery LLC
- NASDAQ OMX Commodities Clearing Company
- National Trading II LLC
- National Trading LLC
- Nexen Marketing
- Nexen Marketing USA Inc
- NextEra Energy Power Marketing, LLC
- Noble Americas Corp.
- Noble Americas Energy Solutions LLC
- Noble Americas Gas & Power Corp.
- Noble Energy Marketing & Trade Corp
- North American Energy Credit & Clearing - Contract Merchant LLC
- North American Energy Credit and Clearing - Delivery LLC
- North American Energy Credit and Clearing Corp.
- North Carolina Electric Membership Corp
- NRG Power Marketing LLC
- NRG Texas LP
- Oasis Dreams General Trading F.Z.E.
- Occidental Energy Canada Inc
- Occidental Energy Marketing Inc
- Occidental Power Services Inc
- Old Dominion Electric Cooperative
- Oxy Energy Canada
- PacifiCorp
- Panda Gila River LP
- Phibro LLC
- Phibro Trading LLC
- Pinnacle West Marketing & Trading Company LLC
- Portland General Electric Company
- Powerex Corp
- PSEG Energy Resources & Trade LLC
- Puget Sound Energy Inc
- R.J. O Brien & Associates, LLC
- Rainbow Energy Marketing Corp
- Reliant Energy Power Supply, LLC
- RRI Energy Services, Inc.
- RWE Supply &Trading GMBH
- RWE Trading Americas Inc.
- San Diego Gas & Electric Company
- Sandlot Investments LLC
- Sempra Energy Solutions LLC
- Sempra Energy Trading Corp
- Sempra Energy Trading LLC
- Sempra Generation
- Shell Energy North America (Canada) Inc
- Shell Energy North America (US) LP
- Shell Trading US Company
- Southern California Edison Company
- Southern Illinois Power Cooperative
- Southern Maryland Electric Cooperative
- Sumer Capital Partners, LP
- Tacoma Power
- TEC Trading Inc
- TeilingerCapital Ltd
- Tenaska Gas Storage LLC
- Tenaska Marketing Canada
- Tenaska Marketing Canada A Division Of Tmv
- Tenaska Marketing Ventures
- Terra Verte Trading LP
- TransAlta Energy Marketing Corp
- TransAlta Energy Marketing US Inc
- Twin Eagle Resource Management Canada, LLC
- Twin Eagle Resource Management, LLC
- UBS AG London Branch
- UBS Commodities Canada Ltd
- Union Electric Co dba AmerenUE
- Union Electric Company dba Ameren Missouri
- Union Power Partners LP
- UNS Electric Inc.
- Velite Energy Master Fund LP
- Velocity American Energy Master I, LP
- Velocity Futures, LP
- Virginia Electric & Power Company
- Virginia Power Energy Marketing Inc
- Vitol Aviation Company
- Vitol Capital Management
- Vitol Inc
- Wabash Valley Power Assoc Inc
- West Oaks Energy LP
- Westar Energy Inc
- Whiteside Energy Fund LP
- Whiting Clean Energy, Inc.
- Williams Gas Marketing Inc
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