fwp
Filed pursuant to Rule 433
Issuer Free Writing Prospectus dated July 15, 2008
Relating to Preliminary Prospectus Supplement dated July 14, 2008
Registration Statement No. 333-147990
Energy Transfer Partners, L.P.
$305,737,500
7,750,000 Common Units
     
Issuer:
  Energy Transfer Partners, L.P.
 
   
Symbol:
  ETP
 
   
Size:
  $305,737,500
 
   
Units sold:
  7,750,000
 
   
Price to public:
  $39.45 per common unit
 
   
Proceeds to ETP (before expenses):
  $293,508,000
 
   
Option to purchase additional units:
  1,162,500 common units
 
   
Trade date:
  July 15, 2008
 
   
Closing date:
  July 21, 2008
 
   
CUSIP:
  29273R109
 
   
Underwriters:
  Citigroup Global Markets Inc.
 
  Wachovia Capital Markets, LLC
 
  Credit Suisse Securities (USA) LLC
 
  Lehman Brothers Inc.
 
  J.P. Morgan Securities Inc.
 
  Merrill Lynch, Pierce, Fenner & Smith Incorporated
 
  Morgan Stanley & Co. Incorporated
 
  UBS Securities LLC
 
  Deutsche Bank Securities Inc.
 
  Morgan Keegan & Company, Inc.
 
  Oppenheimer & Co. Inc.
 
  RBC Capital Markets Corporation
 
  SMH Capital Inc.
     We have been informed that, prior to purchasing the units being offered pursuant to the prospectus supplement, on July 15, 2008, one of the underwriters purchased, on behalf of the syndicate, 240,500 common units at an average purchase price of $39.6973 per common unit in stabilizing transactions.
     Energy Transfer Partners, L.P. has previously filed a registration statement on Form S-3 with the Securities and Exchange Commission (the “SEC”) for the offering to which this communication relates, which registration statement became effective on December 11, 2007. Before you invest, you should read the prospectus supplement to the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about Energy Transfer Partners, L.P. and this offering. You may get these documents for free by visiting EDGAR on the SEC web site at www.sec.gov. Copies of the prospectus supplement and accompanying prospectus relating to this offering may also be obtained by contacting any of the underwriters: Citi, Brooklyn Army Terminal, Attn: Prospectus Delivery Department, 140 58th St, Brooklyn, NY, 11220, (718) 765-6732 or Wachovia Securities, 375 Park Avenue, New York, NY 10152, Attn: Equity Syndicate Department, equity.syndicate@wachovia.com or Credit Suisse Securities (USA) LLC, Attn: Prospectus Dept., One Madison Avenue, New York, NY 10010, (800) 221-1037 or Lehman Brothers Inc., c/o Broadridge Integrated Distribution Services, 1155 Long Island Avenue, Edgewood, NY 11717, fax: (631) 254-7140