<SEC-DOCUMENT>0001292814-14-000120.txt : 20140121
<SEC-HEADER>0001292814-14-000120.hdr.sgml : 20140120
<ACCEPTANCE-DATETIME>20140121123450
ACCESSION NUMBER:		0001292814-14-000120
CONFORMED SUBMISSION TYPE:	SC 13D
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20140121
DATE AS OF CHANGE:		20140121

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GAS TRANSPORTER OF THE SOUTH INC
		CENTRAL INDEX KEY:			0000931427
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION [4922]
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-46666
		FILM NUMBER:		14537395

	BUSINESS ADDRESS:	
		STREET 1:		DON BOSCO 3672 5TH FLR
		STREET 2:		1206 CAPITAL FEDERAL
		CITY:			ARGENTINA
		STATE:			C1
		ZIP:			00000
		BUSINESS PHONE:		005401148659050X1093

	MAIL ADDRESS:	
		STREET 1:		DON BOSCO 3672 5TH FLR
		STREET 2:		CAPITAL FEDERAL
		CITY:			ARGENTINA
		STATE:			C1
		ZIP:			1206

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Pampa Energy Inc.
		CENTRAL INDEX KEY:			0001469395
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			C1
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D

	BUSINESS ADDRESS:	
		STREET 1:		ORTIZ DE OCAMPO 3302
		STREET 2:		BUILDING #4
		CITY:			CITY OF BUENOS AIRES
		STATE:			C1
		ZIP:			C1425DSR
		BUSINESS PHONE:		54-11-4809-9500

	MAIL ADDRESS:	
		STREET 1:		ORTIZ DE OCAMPO 3302
		STREET 2:		BUILDING #4
		CITY:			CITY OF BUENOS AIRES
		STATE:			C1
		ZIP:			C1425DSR
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D
<SEQUENCE>1
<FILENAME>pam20140116_13d.htm
<DESCRIPTION>SCHEDULE 13D
<TEXT>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 24pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">UNITED STATES<BR>SECURITIES AND EXCHANGE COMMISSION<BR>Washington 20549<BR>___________________________________</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 18pt" align=center><B><FONT style="FONT-SIZE: 18pt" lang=EN-US face="Times New Roman">SCHEDULE 13D</FONT></B><FONT style="FONT-SIZE: 12pt" lang=EN-US face="Times New Roman"><BR>(Rule 13d - 101)</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Information to be Included in Statements Filed Pursuant to </FONT></B><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face=simsun>&#167;&nbsp;</FONT></B><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"> 240.13d-1(a) and Amendments Thereto Filed Pursuant to </FONT></B><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face=simsun>&#167;&nbsp;</FONT></B><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"> 240.13d-2(a)</FONT></B></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 11pt" lang=ES-CO face="Times New Roman">TRANSPORTADORA DE GAS DEL SUR S.A.</FONT></B></P>

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">(GAS TRANSPORTER OF THE SOUTH INC.)</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">(Name of Issuer)</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Class B Shares, par value Ps.1 each (&#8220;Class B Shares&#8221;)</FONT></P>

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">American Depositary Shares, each representing 5 Class B Shares(&#8220;ADSs&#8221;),</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">(Title of Class of Securities)</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US color=black face="Times New Roman">No CUSIP for the Class B Shares</FONT></P>

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US color=black face="Times New Roman">The CUSIP for the ADSs is 893870 20 4</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">(CUSIP Number)</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=ES-AR face="Times New Roman">Romina Benvenuti<BR>Ortiz de Ocampo 3302<BR>Building #4<BR>C1425DSR<BR>Buenos Aires<BR>Argentina<BR>Tel: +54 11 4809 9500</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">(Name, Address and Telephone Number of Person<BR>Authorized to Receive Notices and Communications)</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">July 13, 2012 and November 22, 2013</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">(Date of Event Which Requires Filing of this Statement)</FONT></P></TD></TR></TABLE></DIV>

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<P style="MARGIN: 0cm 0cm 12pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of &#167;&#167; 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.&nbsp; </FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US face="courier new">&#9633;&nbsp;</FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">&nbsp; &nbsp;</FONT></P>

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   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">CUSIP No. </FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">None for the Class B Shares</FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">893870 20 4 for the ADSs.</FONT></B></FONT></FONT></B></P>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">SCHEDULE 13D</FONT></B></FONT></B></P></TD>

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   <P style="TEXT-ALIGN: right; MARGIN: 0cm 0cm 0pt" align=right><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Page </FONT></B><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">1</FONT></B></FONT></B><B><FONT><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"> of </FONT></B></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">2</FONT></B></FONT></B><B><FONT>&nbsp;</FONT></B></P></TD></TR></TABLE></DIV>

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<P style="MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;</FONT></B></P>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">1.</FONT></P></TD>

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   <P style="TEXT-INDENT: -210.25pt; MARGIN: 0cm 0cm 0pt 210.25pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Name of Reporting Persons: Pampa Inversiones S.A</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">2.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 6pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Check the Appropriate Box if a Member of a Group</FONT></P>

   <P style="MARGIN: 0cm 0cm 6pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">(a) </FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US face=wingdings>&#168;&nbsp;</FONT></P>

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">(b) </FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US face=wingdings>&#168;&nbsp;</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">3.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">SEC Use Only:</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">4.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Source of Funds: OO</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">5.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e): </FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US face=wingdings>&#168;&nbsp;</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">6.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Citizenship or Place of Organization: Argentina</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Number of<BR>Shares<BR>Beneficially<BR>Owned by<BR>Each<BR>Reporting<BR>Person With</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">7. Sole Voting Power:</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">0</FONT></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">8. Shared Voting Power:</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">29,909,950</FONT></P></TD></TR>

<TR style="PAGE-BREAK-INSIDE: avoid">

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">9. Sole Dispositive Power:</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">0</FONT></P></TD></TR>

<TR style="PAGE-BREAK-INSIDE: avoid">

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">10. Shared Dispositive Power:</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">29,909,950</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">11.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Aggregate Amount Beneficially Owned by Each Reporting Person: 29,909,950</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">12.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Check if the Aggregate Amount in Row (11) Excludes Certain Shares:<BR></FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US face=wingdings>&#168;&nbsp;</FONT></P></TD></TR>

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   <TD style="BORDER-BOTTOM: windowtext 1pt solid; PADDING-BOTTOM: 7.2pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 7.2pt" vAlign=top width="16%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">13.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Percent of Class Represented by Amount in Row (11): 7.7%</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">14.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Type of Reporting Person: HC - CO</FONT></P></TD></TR></TABLE></DIV>

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   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">CUSIP No. </FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">None for the Class B Shares</FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">893870 20 4 for the ADSs.</FONT></B></FONT></FONT></B></P>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">SCHEDULE 13D</FONT></B></FONT></B></P></TD>

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   <P style="TEXT-ALIGN: right; MARGIN: 0cm 0cm 0pt" align=right><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Page </FONT></B><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">1</FONT></B></FONT></B><B><FONT><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"> of </FONT></B></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">7</FONT></B></FONT></B><B><FONT>&nbsp;</FONT></B></P></TD></TR></TABLE></DIV>

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<P style="MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;</FONT></B></P>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">1.</FONT></P></TD>

   <TD style="BORDER-BOTTOM: windowtext 1pt solid; PADDING-BOTTOM: 7.2pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; BORDER-TOP: windowtext 1pt solid; PADDING-TOP: 7.2pt" vAlign=top width="84%" colSpan=2>

   <P style="TEXT-INDENT: -210.25pt; MARGIN: 0cm 0cm 0pt 210.25pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Name of Reporting Persons: Pampa Energ&#237;a S.A. (Pampa Energy Inc.)</FONT></P></TD></TR>

<TR>

   <TD style="BORDER-BOTTOM: windowtext 1pt solid; PADDING-BOTTOM: 7.2pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 7.2pt" vAlign=top width="16%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">2.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 6pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Check the Appropriate Box if a Member of a Group</FONT></P>

   <P style="MARGIN: 0cm 0cm 6pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">(a) </FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US face=wingdings>&#168;&nbsp;</FONT></P>

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">(b) </FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US face=wingdings>&#168;&nbsp;</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">3.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">SEC Use Only:</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">4.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Source of Funds: OO</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">5.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e): </FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US face=wingdings>&#168;&nbsp;</FONT></P></TD></TR>

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   <TD style="BORDER-BOTTOM: windowtext 1pt solid; PADDING-BOTTOM: 7.2pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 7.2pt" vAlign=top width="16%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">6.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Citizenship or Place of Organization: Argentina</FONT></P></TD></TR>

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   <TD style="BORDER-BOTTOM: windowtext 1pt solid; PADDING-BOTTOM: 7.2pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 7.2pt" vAlign=top rowSpan=4 width="16%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Number of<BR>Shares<BR>Beneficially<BR>Owned by<BR>Each<BR>Reporting<BR>Person With</FONT></P></TD>

   <TD style="BORDER-BOTTOM: windowtext 1pt solid; PADDING-BOTTOM: 7.2pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 7.2pt" vAlign=top width="39%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">7. Sole Voting Power:</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">29,909,950</FONT></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">8. Shared Voting Power:</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">0</FONT></P></TD></TR>

<TR style="PAGE-BREAK-INSIDE: avoid">

   <TD style="BORDER-BOTTOM: windowtext 1pt solid; PADDING-BOTTOM: 7.2pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 7.2pt" vAlign=top width="39%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">9. Sole Dispositive Power:</FONT></P></TD>

   <TD style="BORDER-BOTTOM: windowtext 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; PADDING-TOP: 0cm" vAlign=top width="45%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">29,909,950</FONT></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">10. Shared Dispositive Power:</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">0</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">11.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Aggregate Amount Beneficially Owned by Each Reporting Person: 29,909,950</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">12.</FONT></P></TD>

   <TD style="BORDER-BOTTOM: windowtext 1pt solid; PADDING-BOTTOM: 7.2pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 7.2pt" vAlign=top width="84%" colSpan=2>

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Check if the Aggregate Amount in Row (11) Excludes Certain Shares <SUP></SUP>(See also Item 5):<BR></FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US face=wingdings>&#168;&nbsp;</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">13.</FONT></P></TD>

   <TD style="BORDER-BOTTOM: windowtext 1pt solid; PADDING-BOTTOM: 7.2pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 7.2pt" vAlign=top width="84%" colSpan=2>

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Percent of Class Represented by Amount in Row (11): 7.7%</FONT></P></TD></TR>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">14.</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Type of Reporting Person: HC - CO</FONT></P></TD></TR></TABLE></DIV>

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   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">CUSIP No. </FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">None for the Class B Shares</FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">893870 20 4 for the ADSs.</FONT></B></FONT></FONT></B></P>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">SCHEDULE 13D</FONT></B></FONT></B></P></TD>

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   <P style="TEXT-ALIGN: right; MARGIN: 0cm 0cm 0pt" align=right><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Page </FONT></B><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">2</FONT></B></FONT></B><B><FONT><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"> of </FONT></B></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">7</FONT></B></FONT></B><B><FONT>&nbsp;</FONT></B></P></TD></TR></TABLE></DIV>

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<P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 12pt"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Item 1. Security and Issuer</FONT></B></P>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">This statement relates to the Class B Shares and the ADSs of Transportadora de Gas del Sur S.A., a </FONT><I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">sociedad anonima</FONT></I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"> organized under the laws of Argentina (the &#8220;Issuer&#8221;).</FONT></P>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">The address and principal executive office of the Issuer is Don Bosco 3672 5th Floor, C1206ABF City of Buenos Aires, Argentina.</FONT></P>

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<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman">References to &#8220;Ps.&#8221; In this Schedule 13D are to Argentine pesos, and references to &#8220;U.S. dollars,&#8221; &#8220;dollars&#8221; or &#8220;US$&#8221; are to United States dollars.&nbsp;</FONT></P>

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<P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 12pt"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Item 2. Identity and Background</FONT></B></P>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">(1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pampa Inversiones S.A. (&#8220;PISA&#8221;) (formerly known as Dilurey S.A.) is a </FONT><I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">sociedad an&#243;nima</FONT></I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"> organized under the laws of Uruguay.&nbsp;&nbsp;The address of its principal business and principal office is Costa Rica 1538, CP 11500, Montevideo, Uruguay.&nbsp;&nbsp;PISA is a wholly-owned subsidiary of Pampa Energ&#237;a (as defined below) and is itself a holding company for certain of Pampa Energ&#237;a&#8217;s assets.</FONT></P>

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<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">(2)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pampa Energ&#237;a S.A. (&#8220;Pampa Energ&#237;a&#8221; and, together with PISA, the &#8220;Reporting Persons&#8221;) is a </FONT><I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">sociedad an&#243;nima</FONT></I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"> organized under the laws of Argentina.&nbsp;&nbsp;The address of its principal business and principal office is Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Ciudad de Buenos Aires, Argentina.&nbsp;&nbsp;Pampa Energ&#237;a is an energy company in Argentina.</FONT></P>

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<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Information regarding the executive officers and directors of each of PISA and Pampa Energ&#237;a is set forth in Schedule I attached hereto.&nbsp;&nbsp;None of the Reporting Persons nor, to the best of their knowledge, any of the directors or executive officers listed in Schedule I has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.</FONT></P>

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<P style="PAGE-BREAK-AFTER: auto; MARGIN: 0cm 0cm 12pt"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Item 3. Source and Amount of Funds or Other Consideration</FONT></B></P>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="times new (w1)">On July 13, 2012, Compa&#241;&#237;a de Inversiones de Energ&#237;a S.A. (&#8220;CIESA&#8221;), Petrobras Argentina S.A., Petrobras Hispano Argentina S.A., Pampa Energ&#237;a, PISA and Inversiones Argentina I (&#8220;IAI&#8221;) entered into a Settlement Agreement (the &#8220;Settlement Agreement&#8221;) with the intention of terminating (by means of a stipulation of discontinuance of </FONT><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">claims&nbsp;</FONT><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="times new (w1)"> with prejudice) t</FONT><FONT style="BACKGROUND: white; FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman">he action captioned &#8220;Compa&#241;&#237;a de Inversiones de Energ&#237;a S.A. v. AEI, AEI v. Compa&#241;&#237;a de Inversiones de Energ&#237;a S.A., Petrobras Energ&#237;a S.A., Petrobras Hispano Argentina S.A., H&#233;ctor Daniel Casal, Claudio Fontes Nunes and Rigoberto Mej&#237;a Aravena&#8221; (the &#8220;CIESA Action&#8221;)</FONT><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="times new (w1)"> and of mutually releasing each other from all claims and actions in such CIESA Action. On October 25, 2012, the conditions to which the Settlement Agreement was subject were satisfied, thus terminating and extinguishing the CIESA Action.</FONT></P>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="times new (w1)">Pursuant to the Settlement Agreement and as a condition thereto, the above parties to the Settlement Agreement cancelled all of CIESA&#8217;s debt due and outstanding since the year 2002. As a result, PISA received from CIESA ownership of 34,133,200 ordinary Class B Shares issued by the Issuer, representing 8.77% of the Issuer&#8217;s Class B Shares. On November 11, 2012, PISA converted its Class B Shares into ADSs under the Deposit Agreement between the Issuer and The Bank of New York Mellon, as depositary, dated as of October 21, 2002.</FONT></P>

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<P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 12pt"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Item 4. Purpose of Transaction</FONT></B></P>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Pampa Energ&#237;a entered into, and it caused its subsidiary PISA to enter into, the Settlement Agreement with the intention of terminating (by means of a stipulation of discontinuance of claims with prejudice) the CIESA Action and of releasing all the parties to such Settlement Agreement from all claims and actions in connection with the <FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">CIESA Action.&nbsp; Since entering into the Settlement Agreement, PISA has effected various sales of ADSs</FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"> to take advantage of favorable market conditions.</FONT></FONT></P>

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   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">CUSIP No. </FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">None for the Class B Shares</FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">893870 20 4 for the ADSs.</FONT></B></FONT></FONT></B></P>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">SCHEDULE 13D</FONT></B></FONT></B></P></TD>

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   <P style="TEXT-ALIGN: right; MARGIN: 0cm 0cm 0pt" align=right><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Page </FONT></B><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">3</FONT></B></FONT></B><B><FONT><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"> of </FONT></B></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">7</FONT></B></FONT></B><B><FONT>&nbsp;</FONT></B></P></TD></TR></TABLE></DIV>

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<P style="MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B></P>

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<P style="PAGE-BREAK-AFTER: auto; MARGIN: 0cm 0cm 12pt"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Item 5. Interest in Securities of the Issuer</FONT></B></P>

<P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">(a) and (b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">The Reporting Persons have, as of January 17, 2014, the following interests in the Class B Shares (whether represented by ADSs or directly held):</FONT><FONT style="VERTICAL-ALIGN: super"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"> &nbsp;</FONT></FONT></P>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Shares </FONT></B></P>

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Beneficially </FONT></B></P>

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Owned</FONT></B></P></TD>

   <TD style="PADDING-BOTTOM: 0.5pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="2%">

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">% of Class</FONT></B></P></TD>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Sole Power </FONT></B></P>

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">to Vote</FONT></B></P></TD>

   <TD style="PADDING-BOTTOM: 0.5pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT></B>&nbsp;</P></TD>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Shared Power </FONT></B></P>

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">to Vote</FONT></B></P></TD>

   <TD style="PADDING-BOTTOM: 0.5pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT></B>&nbsp;</P></TD>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Sole Power </FONT></B></P>

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">to Dispose</FONT></B></P></TD>

   <TD style="PADDING-BOTTOM: 0.5pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT></B>&nbsp;</P></TD>

   <TD style="BORDER-BOTTOM: black 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="12%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Shared Power </FONT></B></P>

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">to Dispose</FONT></B></P></TD></TR>

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   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="18%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">PISA</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="12%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">29,909,950</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="12%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">7.7%</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">-0-</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="12%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">29,909,950</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="12%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">-0-</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="12%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">29,909,950</FONT></P></TD></TR>

<TR>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="18%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Pampa Energ&#237;a</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="12%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">29,909,950</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="12%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">7.7%</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="12%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">29,909,950</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="12%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">-0-</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="12%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">29,909,950</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="2%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=top width="12%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">-0-</FONT></P></TD></TR></TABLE></DIV>

<P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P>

<P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">To the knowledge of the Reporting Persons, none of the persons listed on Schedule I owns any Shares.</FONT></P>

<P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P>

<P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">(c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </FONT><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">In the past sixty days, PISA has effected the following transaction in the ADSs through brokers on the New York Stock Exchange:</FONT></P>

<P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P>

<DIV align=center>

<TABLE style="WIDTH: 100%; MARGIN-LEFT: 0pt" border=0 cellSpacing=0 cellPadding=0>



<TR>

   <TD style="BORDER-BOTTOM: black 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="24%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Date of </FONT></B></P>

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Transaction</FONT></B></P></TD>

   <TD style="PADDING-BOTTOM: 0.5pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="1%">

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT></B>&nbsp;</P></TD>

   <TD style="BORDER-BOTTOM: black 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="23%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">ADSs Sold</FONT></B></P></TD>

   <TD style="PADDING-BOTTOM: 0.5pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="1%">

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT></B>&nbsp;</P></TD>

   <TD style="BORDER-BOTTOM: black 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="14%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Equivalent Number </FONT></B></P>

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">of Class B Shares</FONT></B></P></TD>

   <TD style="PADDING-BOTTOM: 0.5pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="1%">

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT></B>&nbsp;</P></TD>

   <TD style="BORDER-BOTTOM: black 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="18%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Price per ADSs</FONT></B></P>

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">(U.S. dollars)</FONT></B></P></TD>

   <TD style="PADDING-BOTTOM: 0.5pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="3%">

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT></B>&nbsp;</P></TD>

   <TD style="BORDER-BOTTOM: black 1pt solid; PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; PADDING-TOP: 0cm" vAlign=bottom width="15%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Broker</FONT></B></P></TD></TR>

<TR style="HEIGHT: 17.55pt">

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; HEIGHT: 17.55pt; PADDING-TOP: 0cm" vAlign=bottom width="24%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman">11/22/2013</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; HEIGHT: 17.55pt; PADDING-TOP: 0cm" vAlign=bottom width="1%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; HEIGHT: 17.55pt; PADDING-TOP: 0cm" vAlign=bottom width="23%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman">195,000</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; HEIGHT: 17.55pt; PADDING-TOP: 0cm" vAlign=bottom width="1%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; HEIGHT: 17.55pt; PADDING-TOP: 0cm" vAlign=bottom width="14%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">975,000</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; HEIGHT: 17.55pt; PADDING-TOP: 0cm" vAlign=bottom width="1%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; HEIGHT: 17.55pt; PADDING-TOP: 0cm" vAlign=bottom width="18%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman">2.2180</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; HEIGHT: 17.55pt; PADDING-TOP: 0cm" vAlign=bottom width="3%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; HEIGHT: 17.55pt; PADDING-TOP: 0cm" vAlign=bottom width="15%">

   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">JPM Securities</FONT></P></TD></TR></TABLE></DIV>

<P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P>

<P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Neither Pampa Energ&#237;a nor any of the persons listed on Schedule I have effected any transactions in the Class B Shares or ADSs in the past sixty days.</FONT></P>

<P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 12pt"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B>&nbsp;</P>

<P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 12pt"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer</FONT></B></P>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="BACKGROUND: white; FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman">Neither of the Reporting Persons nor, to the knowledge of such Reporting Persons, any other person listed in response to Item 2 has entered into any contract, arrangement, understanding or relationship with respect to the Class B Shares or ADSs of the Issuer.</FONT></P>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman"></FONT>&nbsp;</P>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 10pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman">EPCA S.A. (formerly Enron Pipeline Company Argentina S.A.) (&#8220;EPCA&#8221;), a wholly-owned subsidiary of Pampa Energ&#237;a and a shareholder in CIESA (which, in turn, is the Issuer&#8217;s controlling shareholder through the ownership of 51% of the Issuer&#8217;s total common shares represented by class A shares, for which there is no reporting obligation pursuant to the Securities Exchange Act of 1934) is party to a shareholders&#8217; agreement dated as of August 29, 2005 among Petrobras Argentina S.A. (formerly Petrobras Energ&#237;a S.A.) (&#8220;Petrobras Argentina&#8221;), Petrobras Hispano Argentina S.A. (together with Petrobras Argentina, the&nbsp;&#8220;Petrobras Argentina Group&#8221;), EPCA and the CIESA Trust (whose trustee is The Royal Bank of Scotland N.V. Sucursal Argentina, as successor to ABN AMRO BANK N.V.) (the&nbsp;&#8220;Trust&#8221;), which holds 40% of CIESA (the&nbsp;&#8220;Shareholders&#8217; Agreement&#8221;). The Shareholders&#8217; Agreement governs the relationship between the shareholders of CIESA with respect to certain matters relating to shareholder participation in CIESA and in the Issuer.</FONT></P>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman">Under the Shareholders&#8217; Agreement, the CIESA directors appointed by each of the parties thereto will cause CIESA to nominate directors, alternate directors and statutory auditors of the Issuer pursuant to the instructions given by each of such parties. &nbsp;Thus, indirectly, EPCA has the right to nominate one regular director, one alternate director, one regular statutory auditor and one alternate statutory auditor of the Issuer. In addition, the Vice-Chairman of the Issuer&#8217;s Board of Directors is nominated by EPCA and the CIESA-nominated directors</FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US color=black face="Times New Roman">&nbsp;</FONT><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman">must</FONT><FONT style="FONT-SIZE: 11pt" lang=EN-US color=black face="Times New Roman">&nbsp;</FONT><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman">vote unanimously in favor of such candidate.</FONT></P>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT size=2></FONT>&nbsp;</P>

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   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 40.5pt; PADDING-TOP: 0cm" vAlign=bottom width="34%">

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">CUSIP No. </FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">None for the Class B Shares</FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">893870 20 4 for the ADSs.</FONT></B></FONT></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT></B>&nbsp;</P></TD>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">SCHEDULE 13D</FONT></B></FONT></B></P></TD>

   <TD style="PADDING-BOTTOM: 0cm; PADDING-LEFT: 5.4pt; PADDING-RIGHT: 5.4pt; HEIGHT: 40.5pt; PADDING-TOP: 0cm" vAlign=top width="33%">

   <P style="TEXT-ALIGN: right; MARGIN: 0cm 0cm 0pt" align=right><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Page </FONT></B><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">4</FONT></B></FONT></B><B><FONT><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"> of </FONT></B></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">7</FONT></B></FONT></B><B><FONT>&nbsp;</FONT></B></P></TD></TR></TABLE></DIV>

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<P style="MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B></P>

<P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman"></FONT>&nbsp;</P></DIV>

<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US color=black face="Times New Roman">In addition, on May 17, 2011, CIESA, the Petrobras Argentina Group, Pampa Energ&#237;a, PISA, IAI, EPCA and the Trust (together, the &#8220;Restructuring Agreement Parties&#8221;) entered into a fourth amendment (the &#8220;Fourth Amendment to the Restructuring Agreement&#8221;) and on July 13, 2012, the Restructuring Agreement Parties entered into a fifth amendment (the &#8220;Fifth Amendment to the Restructuring Agreement&#8221;), in each case to a Restructuring Agreement dated September 1, 2005 and which had been previously amended on May 31, 2006, August 23, 2007 and March 25, 2008. The Fifth Amendment to the Restructuring Agreement provides that, upon obtaining certain regulatory approvals, all of which, as of the date of filing of this Schedule 13D, have not been obtained, (i) all of CIESA&#8217;s class A shares will be held by the Petrobras Argentina Group and all of CIESA&#8217;s class B shares will be held by Pampa Energ&#237;a, PISA, IAI and EPCA (together, the &#8220;Pampa Group&#8221;) and (ii)&nbsp;that the Shareholders&#8217; Agreement will be deemed terminated in all respects and will be replaced by a new shareholders&#8217; agreement among the Petrobras Argentina Group and the Pampa Group.</FONT></P>

<P style="MARGIN-LEFT: 0cm; MARGIN-RIGHT: 0cm"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Item 7.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Material to Be Filed as Exhibits.</FONT></B><FONT style="VERTICAL-ALIGN: super"><FONT style="FONT-SIZE: 12pt" lang=EN-US face="Times New Roman"> &nbsp;</FONT></FONT></P>

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<TR>

   <TD width="15%"><U>Exhibit No.</U><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"> </FONT></TD>

   <TD width="85%">

   <P style="MARGIN: 0cm 0cm 0pt"><U><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Description </FONT></U></P></TD></TR>

<TR>

   <TD width="15%"></TD>

   <TD width="85%"></TD></TR>

<TR>

   <TD vAlign=top width="15%"><FONT size=2>Exhibit 1 </FONT></TD>

   <TD vAlign=top width="85%">

   <P style="MARGIN-TOP: 0cm; MARGIN-BOTTOM: 0pt; MARGIN-RIGHT: 0cm"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Joint Filing Agreement between PISA and Pampa Energ&#237;a dated as of January 17, 2014</FONT></P></TD></TR>

<TR>

   <TD vAlign=top width="15%"><FONT size=2>Exhibit 2 </FONT></TD>

   <TD vAlign=top width="85%">

   <P style="MARGIN-TOP: 0cm; MARGIN-BOTTOM: 0pt; MARGIN-RIGHT: 0cm"><FONT style="FONT-SIZE: 10pt" lang=EN-US color=#000000 face="Times New Roman">CIESA Settlement Agreement (incorporated by reference to the Issuer&#8217;s Annual Report on Form 20-F filed with the Securities and Exchange Commission for the year-ended December 31, 2012 (Commission File No. 1-13396)).</FONT></P></TD></TR>

<TR>

   <TD vAlign=top width="15%"><FONT size=2>Exhibit 3 </FONT></TD>

   <TD vAlign=top width="85%">

   <P style="MARGIN-TOP: 0cm; MARGIN-BOTTOM: 0pt; MARGIN-RIGHT: 0cm"><FONT style="FONT-SIZE: 10pt" lang=EN-US color=#000000 face="Times New Roman">CIESA Shareholders&#8217; Agreement (incorporated by reference to the Issuer&#8217;s Annual Report on Form 20-F filed with the Securities and Exchange Commission for the year-ended December 31, 2005 (Commission File No. 1-13396)).</FONT></P></TD></TR>

<TR>

   <TD vAlign=top width="15%"><FONT size=2>Exhibit 4 </FONT></TD>

   <TD vAlign=top width="85%">

   <P style="MARGIN-TOP: 0cm; MARGIN-BOTTOM: 0pt; MARGIN-RIGHT: 0cm"><FONT style="FONT-SIZE: 10pt" lang=EN-US color=#000000 face="Times New Roman">Fourth Amendment to the Restructuring Agreement, dated as of May 17, 2011 (incorporated by reference to the Issuer&#8217;s Annual Report on Form 20-F filed with the Securities and Exchange Commission for the year-ended December 31, 2010 (Commission File No. 1-13396)).</FONT></P></TD></TR>

<TR>

   <TD vAlign=top width="15%"><FONT size=2>Exhibit 5 </FONT></TD>

   <TD vAlign=top width="85%">

   <P style="MARGIN-TOP: 0cm; MARGIN-BOTTOM: 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US color=#000000 face="Times New Roman">Fifth Amendment to the Restructuring Agreement, dated as of July 13, 2012 (incorporated by reference to Petrobras Argentina S.A.&#8217;s Annual Report on Form 20-F filed with the Securities and Exchange Commission for the year-ended December 31, 2012 (Commission File No. 333-155319)).</FONT></P></TD></TR></TABLE>

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   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">CUSIP No. </FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">None for the Class B Shares</FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">893870 20 4 for the ADSs.</FONT></B></FONT></FONT></B></P>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">SCHEDULE 13D</FONT></B></FONT></B></P></TD>

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   <P style="TEXT-ALIGN: right; MARGIN: 0cm 0cm 0pt" align=right><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Page </FONT></B><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">5</FONT></B></FONT></B><B><FONT><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"> of </FONT></B></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">7</FONT></B></FONT></B><B><FONT>&nbsp;</FONT></B></P></TD></TR></TABLE></DIV>

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<P style="MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B></P>

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<P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">SIGNATURE</FONT></B></P>

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<P style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.</FONT></P>

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<P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman">Dated:&nbsp;&nbsp;January 21, 2014</FONT></P>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman">PAMPA INVERSIONES S.A.</FONT></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman">By:</FONT><U><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman"> /s/ Germ&#225;n P&#233;rez &nbsp;</FONT></U></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp; Name: Germ&#225;n P&#233;rez</FONT></P>

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Title:&nbsp;&nbsp; Executive Officer</FONT></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman">PAMPA ENERG&#205;A S.A.</FONT><FONT style="VERTICAL-ALIGN: super"><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman"> &nbsp;</FONT></FONT></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman">By:</FONT><U><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman"> /s/ Dami&#225;n Miguel Mindlin &nbsp;</FONT></U></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp; Name: Dami&#225;n Miguel Mindlin</FONT></P>

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 8pt" lang=EN-US face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp; Title: Executive Officer</FONT></P></TD></TR>

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<P style="TEXT-ALIGN: right; PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 12pt" align=right><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT></B>&nbsp;</P>

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   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">CUSIP No. </FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">None for the Class B Shares</FONT></B></FONT></B></P>

   <P style="MARGIN: 0cm 0cm 0pt"><B><FONT><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">893870 20 4 for the ADSs.</FONT></B></FONT></FONT></B></P>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt" align=center><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">SCHEDULE 13D</FONT></B></FONT></B></P></TD>

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   <P style="TEXT-ALIGN: right; MARGIN: 0cm 0cm 0pt" align=right><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Page&nbsp;</FONT></B><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"></FONT></B></FONT></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">6</FONT></B></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman"> of </FONT></B></FONT></B><B><FONT><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">7</FONT></B></FONT></B><B><FONT>&nbsp;</FONT></B></P></TD></TR></TABLE></DIV>

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<P style="TEXT-ALIGN: right; PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 12pt" align=right><B><FONT style="FONT-SIZE: 11pt" lang=IT face="Times New Roman">SCHEDULE I</FONT></B></P>

<P style="TEXT-ALIGN: center; PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 12pt" align=center><B><FONT style="FONT-SIZE: 11pt" lang=IT face="Times New Roman">Pampa Inversiones S.A.</FONT></B></P>

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   <P style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0cm"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Principal Occupation</FONT></B></P></DIV></TD>

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   <P style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0cm"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Name, Address and Principal Business of Employer</FONT></B></P></DIV></TD>

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   <DIV style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 1pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0cm">

   <P style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0cm"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Citizenship</FONT></B></P></DIV></TD></TR>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Directors</FONT></B></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="11%">

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD></TR>

<TR>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="17%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Ricardo Torres</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="19%">

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-AR face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina&nbsp;&nbsp;</FONT></P>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Chief Executive Officer and Chief Generation Manager</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="33%">

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Argentina</FONT></P></TD></TR>

<TR>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="17%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Dami&#225;n Miguel Mindlin</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="19%">

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-AR face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina&nbsp;&nbsp;</FONT></P>

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   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="20%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Chief Investment Portfolio Manager&nbsp;</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="33%">

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Electricity company in Argentina</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="11%">

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Argentina</FONT></P></TD></TR>

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   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="17%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Alfredo Jos&#233; Vercelli</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="19%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" face="Times New Roman">Costa Rica 1538, CP 11500, Montevideo, Uruguay</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="20%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">President </FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="33%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" face="Times New Roman">Educaria</FONT></P>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Creation of educational content.</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="11%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Uruguay</FONT></P></TD></TR>

<TR>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="17%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Mar&#237;a Jos&#233; Bianchi</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="19%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" face="Times New Roman">Costa Rica 1538, CP 11500, Montevideo, Uruguay</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="20%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Director Manager </FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="33%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Bianchi &amp; Asociados</FONT></P>

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Paysand&#250; 816&nbsp;, Montevideo, Uruguay</FONT></P>

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Accounting advisory firm.</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="11%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Uruguay</FONT></P></TD></TR>

<TR>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="17%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Germ&#225;n P&#233;rez</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="19%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" face="Times New Roman">Costa Rica 1538, CP 11500, Montevideo, Uruguay</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="20%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Country Manager </FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="33%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-AR face="Times New Roman">Pampa Inversiones S.A.</FONT></P>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Wholly-owned subsidiary of Pampa Energ&#237;a and holding company for certain of Pampa Energ&#237;a&#8217;s assets</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="11%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Uruguay</FONT></P></TD></TR>

<TR>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="17%">

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 12pt 0cm 0pt"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Executive Officers</FONT></B></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="33%">

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="11%">

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></TD></TR>

<TR>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="17%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Ricardo Torres</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="19%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" face="Times New Roman">Costa Rica 1538, CP 11500, Montevideo, Uruguay</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="20%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">President </FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="33%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-AR face="Times New Roman">Pampa Inversiones S.A.</FONT></P>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Wholly-owned subsidiary of Pampa Energ&#237;a and holding company for certain of Pampa Energ&#237;a&#8217;s assets</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="11%">

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Argentina</FONT></P></TD></TR>

<TR style="HEIGHT: 61.6pt">

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; HEIGHT: 61.6pt; PADDING-TOP: 0cm" vAlign=top width="17%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Germ&#225;n P&#233;rez</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; HEIGHT: 61.6pt; PADDING-TOP: 0cm" vAlign=top width="19%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" face="Times New Roman">Costa Rica 1538, CP 11500, Montevideo, Uruguay</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; HEIGHT: 61.6pt; PADDING-TOP: 0cm" vAlign=top width="20%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Country Manager </FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; HEIGHT: 61.6pt; PADDING-TOP: 0cm" vAlign=top width="33%">

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-AR face="Times New Roman">Pampa Inversiones S.A.</FONT></P>

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-AR face="Times New Roman">Costa Rica 1538, CP 11500, Montevideo, Uruguay</FONT></P>

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Wholly-owned subsidiary of Pampa Energ&#237;a and holding company for certain of Pampa Energ&#237;a&#8217;s assets</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; HEIGHT: 61.6pt; PADDING-TOP: 0cm" vAlign=top width="11%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Uruguay</FONT></P></TD></TR></TABLE></DIV>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 24pt 0pt 0cm" align=center><B><FONT><FONT><B><FONT style="FONT-SIZE: 12pt" lang=ES-AR face="Times New Roman">Schedule I</FONT></B></FONT></FONT></B></P></TD>

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   <P style="TEXT-ALIGN: right; MARGIN: 0cm 24pt 0pt 0cm" align=right><B><FONT><FONT><B><FONT style="FONT-SIZE: 12pt" lang=ES-AR face="Times New Roman">Page </FONT></B><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 12pt" lang=ES-AR face="Times New Roman"></FONT></B></FONT></FONT></FONT></B><B><FONT><FONT><B><FONT style="FONT-SIZE: 12pt" lang=ES-AR face="Times New Roman">1</FONT></B></FONT></FONT></B><B><FONT><FONT><FONT style="DISPLAY: none"><B><FONT style="FONT-SIZE: 12pt" lang=ES-AR face="Times New Roman"></FONT></B></FONT><B><FONT style="FONT-SIZE: 12pt" lang=ES-AR face="Times New Roman"> of&nbsp;</FONT></B></FONT></FONT></B><B><FONT><FONT><B><FONT style="FONT-SIZE: 12pt" lang=ES-AR face="Times New Roman">4</FONT></B></FONT></FONT></B><B><FONT><FONT>&nbsp;</FONT></FONT></B></P></TD></TR></TABLE></DIV>

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<P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 12pt" lang=EN-US face="Times New Roman"></FONT>&nbsp;</P></DIV>

<P style="TEXT-ALIGN: center; PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt" align=center><B><FONT style="FONT-SIZE: 11pt" lang=EN-US face="Times New Roman">Pampa Energ&#237;a S.A.</FONT></B></P>

<P style="TEXT-ALIGN: center; PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt" align=center><STRONG></STRONG>&nbsp;</P>

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   <DIV style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: medium none; PADDING-BOTTOM: 1pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0cm">

   <P style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0cm"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Name</FONT></B></P></DIV></TD>

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   <P style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0cm; PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0cm"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Citizenship</FONT></B></P></DIV></TD></TR>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Pablo Alejandro H&#233;ctor Ferrero</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="19%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina</FONT></P></TD>

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   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="11%">

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Pablo Alejandro D&#237;az (</FONT><I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">deputy</FONT></I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">)&nbsp;</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Alternate Director </FONT></P></TD>

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   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="11%">

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Alejandro Mindlin (</FONT><I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">deputy</FONT></I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">)&nbsp;</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="19%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Brian Robert Henderson (</FONT><I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">deputy</FONT></I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">)&nbsp;</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="19%">

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Scotland</FONT></P></TD></TR>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Mariano Batistella (</FONT><I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">deputy</FONT></I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">)&nbsp;</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Romina Benvenuti (</FONT><I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">deputy</FONT></I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">)&nbsp;</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Carlos Luis Tovagliari (</FONT><I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">deputy</FONT></I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">)&nbsp;</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Gabriel Cohen (</FONT><I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">deputy</FONT></I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">)&nbsp;</FONT></P></TD>

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<TR style="HEIGHT: 11.9pt">

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Carlos P&#233;rez Bello (</FONT><I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">deputy</FONT></I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">)&nbsp;</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Eduardo Pablo Setti (</FONT><I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">deputy</FONT></I><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">)&nbsp;</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Tucum&#225;n 500, 3<SUP>rd</SUP> Floor</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-AR face="Times New Roman">General Director of Investment </FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">National Social Security Administration (</FONT><I><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Administraci&#243;n Nacional de la Seguridad Social)</FONT></I></P>

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Tucum&#225;n 500, 3<SUP>rd</SUP> Floor</FONT></P>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 12pt 0cm 0pt"><B><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Executive Officers</FONT></B></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Gustavo Mariani</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Chairman, Co-Chief Executive Officer and Chief Generation Manager</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Ricardo Alejandro Torres</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Vice Chairman, Co-Chief Executive Officer, Chief Financial Officer and Chairman of Edenor</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Dami&#225;n Miguel Mindlin</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Chief Investment Portfolio Manager</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Horacio Turri</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Chief Oil &amp; Gas Manager</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Gabriel Cohen</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Orlando Escudero</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Operations and Maintenance Manager</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Pampa Energ&#237;a S.A.</FONT></P>

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina&nbsp;&nbsp;</FONT></P>

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Electricity company in Argentina</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Argentina</FONT></P></TD></TR>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Ruben Turienzo</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="20%">

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Commercial Manager</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Pampa Energ&#237;a S.A.</FONT></P>

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina&nbsp;&nbsp;</FONT></P>

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Electricity company in Argentina</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Argentina</FONT></P></TD></TR>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Mario Ricardo Cebreiro</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="19%">

   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina</FONT></P></TD>

   <TD style="PADDING-BOTTOM: 3.6pt; PADDING-LEFT: 5.75pt; PADDING-RIGHT: 5.75pt; PADDING-TOP: 0cm" vAlign=top width="20%">

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Human Recourses Manager</FONT></P></TD>

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   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Pampa Energ&#237;a S.A.</FONT></P>

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=ES-CO face="Times New Roman">Ortiz de Ocampo 3302, Building&nbsp;#4 C1425DSR, Buenos Aires, Argentina&nbsp;&nbsp;</FONT></P>

   <P style="PAGE-BREAK-AFTER: avoid; MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Electricity company in Argentina</FONT></P></TD>

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   <P style="MARGIN: 0cm 0cm 0pt"><FONT style="FONT-SIZE: 10pt" lang=EN-US face="Times New Roman">Argentina</FONT></P></TD></TR></TABLE></DIV>

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   <P style="TEXT-ALIGN: center; MARGIN: 0cm 24pt 0pt 0cm" align=center><B><FONT><FONT><B><FONT style="FONT-SIZE: 12pt" lang=ES-AR face="Times New Roman">Schedule I</FONT></B></FONT></FONT></B></P></TD>

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<DESCRIPTION>EXHIBIT 1
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<P style="TEXT-ALIGN: right; MARGIN: 0cm 0cm 0pt" align=right><B><FONT><FONT face="times new roman"><B><FONT style="FONT-SIZE: 11pt" lang=ES-CO face="times new roman">Exhibit 1</FONT></B></FONT></FONT></B></P></DIV>

<P style="TEXT-ALIGN: center; MARGIN: 0cm 0cm 0pt; BACKGROUND: white" align=center><B><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman">JOINT FILING AGREEMENT</FONT></B></P>

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<P style="MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman">In accordance with Rule 13d-1(k) of the Securities Exchange Act of 1934, as amended, each of&nbsp; Pampa Inversiones S.A. and Pampa Energ&#237;a S.A. agrees to the joint filing of a Statement on Schedule 13D (including any and all amendments thereto) with respect to the Class B common shares, par value Ps. 1.00 per share (the &#8220;Class B Shares&#8221;) and American Depositary Shares, each representing 5 Class B Shares, of Transportadora de Gas del Sur S.A. and further agrees that this Joint Filing Agreement shall be included as an Exhibit to such filing. This Joint Filing Agreement may be executed in multiple counterparts, each of which shall be deemed to be an original, but all of which together shall constitute one and the same instrument.</FONT></P>

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<P style="MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman">Dated: January 21, 2014</FONT></P>

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   <P style="MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=ES-CO color=black face="times new roman">PAMPA INVERSIONES S.A.</FONT></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=ES-CO color=black face="times new roman">&nbsp; </FONT></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman">By:</FONT><U><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman"> /s/ Germ&#225;n P&#233;rez &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;</FONT></U></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp; Name: Germ&#225;n P&#233;rez</FONT></P>

   <P style="MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Title:&nbsp;&nbsp; Executive Officer</FONT></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman">&nbsp; </FONT></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman">PAMPA ENERG&#205;A S.A.</FONT></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman">By:</FONT><U><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman"> /s/ Dami&#225;n Miguel Mindlin&nbsp;&nbsp;</FONT></U></P></TD></TR>

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   <P style="MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp; Name: Dami&#225;n Miguel Mindlin</FONT></P>

   <P style="MARGIN: 0cm 0cm 0pt; BACKGROUND: white"><FONT style="LINE-HEIGHT: normal; FONT-SIZE: 10pt" lang=EN-US color=black face="times new roman">&nbsp;&nbsp;&nbsp;&nbsp; Title: Executive Officer</FONT></P></TD></TR>

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