Sale of Assets by Edenor

Pampa Energía Announces Sale of Assets by its Subsidiary Empresa Distribuidora y Comercializadora Norte S.A. (“Edenor”)

Buenos Aires, February 27, 2013. Pampa Energía S.A. (NYSE: PAM; Buenos Aires Stock Exchange: PAMP “Pampa” or the “Company”) informs that on the date of today, the Board of Directors of Edenor accepted by unanimity the offer letter from Servicios Eléctricos Norte BA S.L. (the “Buyer”) dated on February 26, 2013, to acquire from Edenor 100% of the share capital and voting rights of AESEBA S.A. (“AESEBA”). AESEBA is the owner of 90% of the share capital and voting rights of Empresa Distribuidora de Energía Norte S.A. (“Eden”).

The price offered by the Buyer will be paid with Edenor bonds, for an amount that as of today represents US$80 million. The bonds’ transfer will be guaranteed by the Buyer with the deposit to a Trustee of AR$300 million in Argentine Republic sovereign bonds. Additionally, the Buyer has transferred today to Edenor the amount of US$3 million as fulfillment guarantee of its obligations.

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