Exelon Corp. is one of the nation's largest electrical utilities, with over 5.4 million retail customers and over 33,000 Megawatts in energy capacity (1 MW can power approximately 500 homes; for example, a city the size of Seattle can consume 1,100 MW at any given moment in time.) In the first quarter of 2010 Exelon reported operating revenues of $4.46B and operating income of $1.4B and in 2009 operating revenues and operating income were $17.3B and $4.8B, respectively.^[1][2] Exelon delivers energy to millions of retail customers in Pennsylvania and Illinois and generates energy for wholesale delivery to retail suppliers throughout the nation.^[3]

PECO and ComEd comprise Exelon's retail utility segment. PECO delivers electricity and gas to almost 2 million customers in the southeastern portion of Pennsylvania, including the city of Philadelphia. ComEd delivers electricity to 3.7 million customers in northern Illinois. The future success of both subsidiaries depends largely on U.S. Energy Regulations and their respective regulatory environments. ComEd, in particular, faces some uncertainty as Illinois nears the end of a 10 year legislative rate freeze on energy prices. If Illinois moves from government regulated prices to market based pricing, ComEd could see a significant boost to earnings. On the other hand, continuation of rate freeze legislation could pose a serious threat to the company.

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