AT Atlantic Power Corporation

Alltel Wireless, America�s largest network, today announced The WaferTM, one of the thinnest, sleekest phones available on the U.S. market today, is now available exclusively at shopalltel.com and Alltel Wireless retail locations. The Wafer (SCH-r510) by Samsung, offers customers the cool features they have come to expect out of their wireless phones in a quarter-inch form that can slip easily into a pocket, purse or the palm of your hand. The Wafer, weighing only 2.7 oz., features XM Radio Mobile, Axcess TV and Axcess Mobile Guide. The Wafer is preloaded with Axcess Search, which allows customers to search for ringtones, wallpaper or other information on their phones by simply holding down the pound key. Other features include a 1.3 megapixel camera with video capabilities, an MP3 player, an expandable memory slot, Stereo Bluetooth Headset capability and Alltel�s award-winning Celltop technology. �Alltel is committed to accommodating our customers and their always-on-the-go lifestyles,� said Wade McGill, senior vice president of product management for Alltel Wireless. �The Wafer delivers an amazing array of fashion, functions and features in a groundbreaking ultra-thin form.� �The Wafer represents the new era of form and function for phones in the United States,� said Peter Skarzynski, senior vice president of Samsung Telecommunications America. �The handset demonstrates that a phone as thin as a few credit cards can deliver all of the features that consumers have come to expect of today�s high-end phones.� The phone is equipped with Alltel�s exclusive Celltop technology, which is free-of-charge and features 11 pre-installed and downloadable �cells.� Each cell is a category-specific half screen comprised of graphics and text that provides shortcuts for wireless users to navigate through information and applications including: call log, weather, news, baseball, basketball, football, rodeo, stocks, text messaging inbox and ringtones. Celltop recently was named �Best in Show� at the Second Annual Emerging Technology (E-Tech) Awards at CTIA Wireless 2007, the world�s largest event for the wireless industry. The Wafer is now available at Alltel Wireless retail stores and at shopalltel.com for $49.99 after a $50 mail-in rebate. This discounted price is available when new customers sign-up for a two-year service agreement as well as existing eligible customers on qualifying rate plans. Customers who purchase The Wafer and are on a qualifying calling plan are able to join �My Circle,� Alltel�s exclusive feature that allows customers to choose who they call for free � any 10 numbers, any network. Alltel Wireless also offers Anytime Plan Changes, giving customers the flexibility to change their rate plan any time, without extending their contract. Alltel (NYSE: AT) is owner and operator of the nation�s largest wireless network and has 12 million customers. For more information about Alltel, please visit www.alltel.com. About Samsung Telecommunications America Samsung Telecommunications America, LLC, a Dallas-based subsidiary of Samsung Electronics Co., Ltd., researches, develops and markets wireless handsets and telecommunications products throughout North America. For more information, please visit www.samsungwireless.com. About Samsung Electronics Samsung Electronics Co., Ltd. is a global leader in semiconductor, telecommunication, digital media and digital convergence technologies with 2006 parent company sales of US$63.4 billion and net income of US$8.5 billion. Employing approximately 138,000 people in 124 offices in 56 countries, the company consists of five main business units: Digital Media Business, LCD Business, Semiconductor Business, Telecommunication Network Business and Digital Appliance Business. Recognized as one of the fastest growing global brands, Samsung Electronics is a leading producer of digital TVs, memory chips, mobile phones and TFT-LCDs. For more information, please visit www.samsung.com.