August 2, 2011

Pampa Energia S.A. and Apache Investment Agreement

BUENOS AIRES, Argentina, Aug. 2, 2011 /PRNewswire/ -- Pampa Energia S.A. announces the following note:



Your Offices

Ref.: C.R. 187637

Dear Sirs,

In my capacity as Responsible of Market Relations for Pampa Energia S.A. ("Pampa" or the "Company"), I address the Argentine Securities Commission and the Buenos Aires Stock Exchange in response to the note referenced above regarding the relevant event published by the Company on December 1, 2010 in relation to the investment agreement subscribed between a subsidiary of the Company, Petrolera Pampa S.A. ("Petrolera Pampa"), and Apache Energia Argentina S.R.L. ("Apache").

In that sense, we inform that Petrolera Pampa together with Apache are successfully fulfilling this investment agreement and that, as of the date of this note, the production goal originally proposed has been achieved.

For further information, contact:
Ricardo Torres - Chief Executive Officer
Mariano Batistella - Investor Relations
3302 Ortiz de Ocampo, Building #4
(C1425DSR) Ciudad Autonoma de Buenos Aires, Argentina
Phone: +54-11-4809-9500
[email protected]

SOURCE Pampa Energia S.A.