In the news release, Edenor S.A. (NYSE: EDN) First Quarter 2007 Earnings Audio Webcast and Conference Call, issued yesterday, May 9, by Edenor S.A. over PR Newswire, the "When" section should read "Friday, May 11, 2007" instead of "Friday, March 11, 2007," as incorrectly transmitted by PR Newswire. Complete, corrected release follows: BUENOS AIRES, Argentina, May 9 /PRNewswire-FirstCall/ -- Edenor S.A. announces the following Webcast: What: Edenor S.A. First Quarter 2007 Earnings Audio Webcast and Conference Call When: Friday, May 11, 2007 at 11:00 AM EDT Where: http://www.videonewswire.com/event.asp?id=39785 How: Live over the Internet -- Simply log on to the web at the address above. Contact: Ivana del Rossi +54-11-4346-5127 or If you are unable to participate during the live webcast, the call will be archived at http://www.edenor.com/ To listen by phone Int/Local Dial-in: (888) 802 8577 / (973) 935 8754 Confirmation Code: 8789234 Playback Conference Call In the U.S.: (877) 519 4471 International calls: (973)341 3080 Password: 8789234 Available from: one hour after its conclusion, through May 18, 2007. http://www.videonewswire.com/event.asp?id=39785DATASOURCE: Edenor S.A. CONTACT: In Buenos Aires, Ivana Del Rossi, IRO, +011-54-11-4346-5231, ; or in New York, Melanie Carpenter, i-advize Corporate Communications, +1-212-406-3690, , for Edenor Web site: http://www.edelman.com/

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