Restart of Commissioning of Steam Turbine at Loma de la Lata

Pampa Energía Announces the Restart of Commissioning of Steam Turbine at Central Térmica Loma de la Lata (‘CTLL’)

Buenos Aires, June 24, 2013. Pampa Energía S.A. (NYSE: PAM; Buenos Aires Stock Exchange: PAMP ‘Pampa’ or the ‘Company’) informs that, in relation to the relevant event on November 16, 2012 related to certain technical problems in the Steam Turbine unit at CTLL and which forced the Steam Turbine unit out of operation, we report that today such technical problems have been solved. Thus, the Steam Turbine is again under commissioning.
For further information, contact:

Ricardo Torres – Chief Executive Officer
Mariano Batistella – Special Projects Manager and Investor Relations Officer
Lida Wang – Special Projects and Investor Relations Associate
3302 Ortiz de Ocampo, Building #4
(C1425DSR) Ciudad Autónoma de Buenos Aires, Argentina
Phone: +54 (11) 4809 9500