Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906
OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report of Energy Transfer Partners, L.P. (the Partnership) on Form 10-Q
for the quarter ended February 28, 2006 as filed with the Securities and Exchange Commission on the date hereof (the Report), I, Ray C. Davis, Co-Chief Executive Officer, certify, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:



| | (1) | The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
| | --- | ---------------------------------------------------------------------------------------------------------------------



| | (2) | The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Partnership.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------



|                     |  |                           
|-------------------- |  | --------------------------
|Date: April 10, 2006 |  |                           
|                     | 
|                     |  | /s/ Ray C. Davis          
|                     |  | Ray C. Davis              
|                     |  | Co-Chief Executive Officer

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|* | A signed original of this written statement required by 18 U.S.C. Section 1350 has been provided to and will be retained by Energy Transfer Partners, L.P.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------



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CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In
connection with the quarterly report of Energy Transfer Partners, L.P. (the Partnership) on Form 10-Q for the quarter ended February 28, 2006 as filed with the Securities and Exchange Commission on the date hereof (the
Report), I, Kelcy L. Warren, Co-Chief Executive Officer, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:



| | (1) | The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
| | --- | ---------------------------------------------------------------------------------------------------------------------



| | (2) | The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Partnership.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------



|                     |  |                           
|-------------------- |  | --------------------------
|Date: April 10, 2006 |  |                           
|                     |  | /s/ Kelcy L. Warren       
|                     |  | Kelcy L. Warren           
|                     |  | Co-Chief Executive Officer

---

|* | A signed original of this written statement required by 18 U.S.C. Section 1350 has been provided to and will be retained by Energy Transfer Partners, L.P.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------