Exhibit 13.1


                               CERTIFICATION
     PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (SUBSECTIONS
    (A) AND (B) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE)

      Pursuant to section 906 of the Sarbanes-Oxley Act of 2003 (subsections (a)
and (b) of section 1350, chapter 63 of title 18, United States Code), each of
the undersigned officers of Petrobras Energia Participaciones, S.A. (the
"Company"), does hereby certify, to such officer's knowledge, that:

      The Annual Report on form 20-F for the year ended December 31, 2003 (the
"Form 20-F") of the Company fully complies with the requirements of section
13(a) or 15(d) of the Securities Exchange Act of 1934 and information contained
in the Form 20-F fairly presents, in all material respects, the financial
condition and results of operations of the Company.



Dated: July 8, 2004                     /s/ Alberto Guimaraes
                                       -----------------------------------------
                                       Alberto Guimaraes
                                       Chief Executive Officer


Dated: July 8, 2004                     /s/ Luis Sas
                                       -----------------------------------------
                                       Luis Sas
                                       Chief Financial Officer


A signed original of this written statement required by Section 906 has been
provided to the Company and will be retained by the Company and furnished to the
Securities and Exchange Commission or its staff upon request.