When combined, the June and September purchases result in a retail price of 9.41 cents per kilowatt hour (kWh) for PECO's residential customers, about a 4 percent increase compared to current prices. For the first time, the company also purchased electricity for its small and mid-sized commercial customers. This purchase resulted in a retail price of 9.79 cents per kWh, about the same as current prices.

Because energy prices fluctuate, PECO is buying the electricity needed in 2011 four different times -- reducing the risk to customers of purchasing electricity all at one time when market prices could be high. PECO will complete the remaining two purchases in June 2010 and September 2010. The results of all four purchases will determine the price PECO's customers will pay for electricity beginning Jan. 1, 2011. Because of market fluctuations, and other customer and environmental programs, PECO is helping customers prepare for what could be an overall increase of 10 -- 15 percent.

"I am pleased that the level of competition and resulting prices is helping reduce the price increase for our customers," said Denis O'Brien, PECO president and CEO. "We know that an increase of any amount can be difficult for customers, so PECO also has many programs and options to help make the 2011 transition to market-based rates as smooth as possible."

These programs include PECO's Early Phase-In program, which gives customers the option of preparing in advance by paying a little more each month beginning 2009. Those payments, plus a 6 percent annual interest paid by PECO, will be applied to customer accounts beginning in January 2011 to help offset any price increase. Customers may enroll in this program until December 2009.

PECO's energy saving programs to help customers save money by using energy more efficiently include deeply discounted compact fluorescent light (CFL) bulbs at more than 800 stores; rebates on energy efficient appliances and products; home energy ˜audits' to help customers understand where they can save money by using energy more efficiently; payment and pick-up service for older, inefficient appliances; and new ˜time of use' rates to encourage energy use at times throughout the day when power prices are lower. In total, these programs will help customers reduce their energy use by 1.2 billion kilowatt-hours by 2013. To learn more visit www.peco.com/SAVE.

The electricity that PECO buys will be available to customers who do not choose to purchase their electricity from a retail energy supplier. PECO will continue to ensure the safe, reliable delivery of electricity to all customers, regardless of whether or not they purchase electricity from another supplier.

Additional Information Regarding PECO's Electricity Purchases

The retail energy price of 9.16 cents per kWh for residential customers resulted from a wholesale energy price of 8 cents per kWh. Thirteen suppliers qualified to submits bids for this electricity purchase.

The retail energy price of 9.79 cents per kWh for small and mid-sized commercial customers resulted from a wholesale energy price of 8.59 cents per kWh. Thirteen suppliers qualified to submit bids for this electricity purchase.

Based in Philadelphia, PECO is an electric and natural gas utility subsidiary of Exelon Corporation (NYSE: EXC). PECO serves 1.6 million electric and 485,000 natural gas customers in southeastern Pennsylvania and employs about 2,400 people in the region. PECO delivered 83.7 billion cubic feet of natural gas and 39.4 billion kilowatt-hours of electricity in 2008. 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.

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