Cancellation of early dividend

Pampa Energía announces cancellation of early dividend

Buenos Aires, March 2, 2012. Pampa Energía S.A. (NYSE: PAM; Buenos Aires Stock Exchange: PAMP), announces today that the Company’s Board of Directors decided to cancel the early dividend approved on January 4, 2012 for the amount of AR$17,086,041.63.

For further information, contact:

Ricardo Torres – Chief Executive Officer
Mariano Batistella – Special Projects Manager and Investor Relations Officer
3302 Ortiz de Ocampo, Building #4
(C1425DSR) Ciudad Autónoma de Buenos Aires, Argentina
Phone: +54 (11) 4809 9500
http://www.pampaenergia.com/ir
investor@pampaenergia.com