AT Atlantic Power Corporation

Sharilyn Gasaway, executive vice president and CFO of Alltel (NYSE: AT), will speak at 3:40 p.m. CDT on May 9 at the R.W. Baird 2006 Growth Stock Conference in Chicago. 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 three months. Alltel is a customer-focused communications company with more than 15 million customers in 36 states and nearly $10 billion in annual revenues. Alltel, NYSE: AT www.alltel.com