AT Atlantic Power Corporation

Alltel's (NYSE: AT) Chief Financial Officer Jeff Gardner will speak May 5 at the Morgan Stanley 10th Annual Media & Communications Conference in Washington, D.C. at 7:45 a.m. CDT. Instructions to access the Webcast of the presentation can be found at www.alltel.com/investors. The public can access the presentation via the Investor Relations portion of the Web site on the day of the conference. It also will be archived on the Web site for one year. Alltel is a customer-focused communications company with more than 13 million customers and $8 billion in annual revenues. Alltel provides wireless, local telephone, long-distance, Internet and broadband services to residential and business customers in 27 states. Alltel, NYSE: AT www.alltel.com