AT Atlantic Power Corporation

Alltel (NYSE: AT) wireless customers now can send and receive text messages using the AOL(R) Instant Messenger(TM) (AIM(R)) and MSN Messenger services by signing up for Alltel's Axcess Instant Messaging service plan. "We are excited to be working with AOL and MSN to bring these services to our customers," said Wade McGill, vice president of wireless marketing for Alltel. "Our new Axcess Instant Messaging service enables Alltel wireless customers with text-messaging capable handsets to send and receive instant messages via SMS as if they were still at their desktop computers. Customers can use Axcess Instant Messaging with any text messaging, messaging pack or pay per use text messaging plan, at no additional cost." Axcess Instant Messaging usage will appear on customers' bills as text messages. Alltel's text messaging plans start as low as $5.99 for any combination of 300 incoming or outgoing messages per month. Customers who have not signed up for a messaging plan receive 5 free incoming messages and then will be charged 5 cents for each incoming or outgoing message. Axcess Instant Messaging customers will be able to stay connected with friends and family or quickly touch base with the office no matter where they go. AIM(R) desktop users can also send instant messages to mobile phones via conventional text messaging by simply addressing the instant message to a mobile phone number. Additionally, the "Forward to Mobile" feature from the AIM service automatically forwards incoming instant messages to user's mobile device. Alltel customers can easily become AIM or MSN users by visiting AIM.com, or MSN.com, and following the directions for IM forwarding or PC to Mobile respectively. 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