AT Atlantic Power Corporation

An innovative alliance between Alltel Wireless, America's largest network, and Karbon Systems, an industry leading provider of managed wireless services, now provides Alltel's business customers with a comprehensive range of support services, including 24x7 help desk support, end-user training, billing and asset management services, and BlackBerry Enterprise Server(TM) installation and management. "Alltel is dedicated to delivering optimal wireless business solutions tailored to the needs of the individual client," said Elisabeth Owen, president of wireless business solutions for Alltel. "By joining forces with Karbon Systems, we can offer our customers enhanced program management and support options as part of an integrated wireless solution." Deploying and managing an enterprise wireless program requires technical expertise and day-to-day maintenance in order to operate at maximum efficiency and cost effectiveness. By utilizing Karbon Systems services, businesses of all sizes can leverage the benefits of wireless technology without allocating internal resources to wireless project management. Karbon Systems offers help desk support for a wide variety of devices, including PDAs, smart devices and wireless phones. The company's in-house team of specialists provides 24x7 phone, e-mail and online support. On-site and remote BlackBerry Enterprise Server installation and management, as well as end-user training, are provided by a team of Karbon Systems trained technicians. Billing and asset management services, including direct bill payment, rate plan optimization and spending analysis, also are offered by Karbon Systems. "Karbon Systems combines customer focus, technical expertise and advanced project management tools to provide superior service to our clients," said Robert Thacher, CEO of Karbon Systems. "As America's largest network, Alltel has earned its reputation for exemplary customer care and commitment to innovative new services. We plan to continue this tradition by working closely with Alltel to provide seamlessly integrated, efficient and cost effective support services to the enterprise market." About Karbon Systems Karbon Systems is a leading provider of managed wireless services. Karbon Systems clients include Fortune 1000 companies and state and federal government agencies. Learn more at http://www.karbonsystems.com. About Alltel Alltel is owner and operator of the nation's largest wireless network and has more than 10 million wireless customers. Alltel, NYSE: AT www.alltel.com