The U.S. Department of Energy’s (DOE) National Renewable Energy Laboratory recently ranked PECO WIND fifth in the list of top ten green power programs based on total number of customers. The announcement is part of the DOE’s annual ranking of leading utility green power programs. More than 800 utilities across the Unites States now offer voluntary programs allowing customers to choose electricity generated from renewable resources such as wind and solar.

“We are so pleased with the Department of Energy’s ranking and recognition of PECO WIND,” said Denis O’Brien, president and CEO of PECO. “We believe in providing our customers with many choices, including a choice in how their electricity is generated. We, along with the nearly 40,000 customers who have chosen PECO WIND, understand the importance of investing in electricity generated by alternate methods.”

Since its launch in May 2004, PECO WIND has become one of the largest and fastest growing green power programs in the country. The 2007 environmental benefit is the same as planting about 12 million trees or not driving 157 million miles. Provided through a partnership with wind energy marketer Community Energy, Inc., PECO WIND is a clean, environmentally-friendly wind power option for customers.

Brent Alderfer, president of Community Energy, Inc., PECO’s wind energy supply partner, said: “The PECO WIND program leads the field in so many ways, it’s not surprising to see it continue to be listed on the Department of Energy’s top 10 programs. PECO and its customers have put Pennsylvania on the map with new, clean wind generation.”

The first wind product offered by a utility in Pennsylvania, PECO WIND is available to PECO’s residential and business customers in Bucks, Chester, Delaware, Montgomery, Philadelphia and York counties and is supplied by a new wind power facility in Waymart, PA, near the Poconos. PECO WIND is offered to residential customers in 100-kilowatt hour (kWh) blocks for an additional monthly fee of about $2.50 per block, added directly to customers’ monthly PECO bill. For more information about PECO WIND call 1-866-WIND-321, or visit www.pecowind.com.

Based in Philadelphia, PECO is an electric and natural gas utility subsidiary of Exelon Corporation (NYSE:EXC). PECO serves 1.6 million electric and 480,000 natural gas customers in southeastern Pennsylvania and employs about 2,500 people in the region. PECO delivered 78.5 billion cubic feet of natural gas and 39.9 billion kilowatt-hours-hours of electricity in 2007. Founded in 1881, PECO is one of the Greater Philadelphia Region’s most active corporate citizens, providing leadership, volunteer and financial support to numerous arts and culture, education, environmental, economic development and community programs and organizations.