PUC Unanimously Approves PECO's Gas Delivery Service Rate Increase

New Energy Efficiency and Low-Income Programs to Begin January 1,
2009
PHILADELPHIA--(Business Wire)--
PECO today announced that the Pennsylvania Public Utility
Commission (PUC) unanimously approved the company's Gas Delivery
Service Rate Increase.

The filing, which was originally submitted to the PUC on March 31,
2008, provides for a revenue increase of $76.5 million. The average
monthly residential bill of $134.37 will increase by $10.79, or 8
percent. The average monthly commercial bill of $652.17 will increase
by $50.18 or 7.7 percent.

Under the new rate plan, PECO's Customer Assistance Program (CAP),
Low Income Usage Reduction Program (LIURP) and energy efficiency
programs will dramatically expand beginning Jan. 1, 2009. Under the
plan, CAP will expand from two income-adjusted rates to four
income-adjusted rates, a funding increase from $4.3 million to
approximately $13.7 million annually. Funding for LIURP, which
provides free weatherization measures to low-income customers, will
increase from $900,000 to $2.25 million annually.

In addition, new energy efficiency programs that will help
customers manage their energy usage and gas bill will also begin in
2009. Examples include a new appliance rebate program that will
provide customers with a $300 rebate to replace old furnaces or
boilers with new high efficiency-certified models and a $50 rebate to
replace old water heaters.

The new rate will also fund $280 million worth of system
investments during the next five years to increase flow to portions of
the service territory experiencing growth. PECO will also repair and
replace aging equipment and distribution lines, and increase system
efficiencies with new technologies.

"While there is never a good time for a rate increase, this
unanimous approval will allow PECO to improve several of our
low-income programs, launch new energy efficiency programs and
continue to provide safe and reliable service to our growing
population of natural gas customers," said Mark Alden, vice president
of Gas for PECO. "The change to customer bills will take effect on
January 1, 2009."

PECO's natural gas bill is made up of two parts. The delivery
charge - the subject of today's vote - is the cost of moving the
natural gas to customers. This charge provides the funds PECO needs to
maintain the gas distribution system, buy equipment and materials and
to pay salaries. The gas commodity charge reflects the cost PECO pays
to buy gas on the wholesale market. PECO does not make any money on
this portion of the bill.

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 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.

If you are a member of the media and would like to receive PECO
news releases via e-mail please send your e-mail address to
PECO.Communication@exeloncorp.com

PECO
Cameron Kline, 215-841-5555

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