PECO OK`d to Go Solar!

Company becomes first PA utility to make long-term purchases of solar energy
credits
PHILADELPHIA--(Business Wire)--
PECO received approval today from the Pennsylvania Public Utility Commission
(PUC) to purchase up to 80,000 solar alternative energy credits, the equivalent
of six megawatts, during 10 years as part of the company`s ongoing fulfillment
of the state`s Alternative Energy Portfolio Standards (AEPS).

Enough energy to power nearly 1,000 homes for 10 years, it would take about
eight football fields of solar panels to produce six megawatts of energy. Once
complete, the company`s purchases could result in the same environmental benefit
as planting more than 48,000 acres of trees or not driving more than 133 million
miles.

"In 2008 PECO embarked on the first phase of a five-year major environmental
initiative to preserve the environment and help our customers and the
communities we serve become more environmentally responsible," said Denis
O`Brien, PECO president and CEO. "The increased use of renewable types of energy
is an important part of our efforts. By purchasing these credits and `banking`
them to meet future requirements we are helping encourage new solar projects and
fostering the development of the renewable energy market."

The AEPS legislation requires that, beginning in 2011, more of the energy used
by PECO customers be generated from renewable resources such as wind and solar.
This requirement is measured by renewable energy credits. Renewable energy
credits are sold by electric generators on a one-to-one basis each time they
produce one megawatt-hour of renewable energy.

The PUC approved PECO`s request to conduct a request for proposals (RFP) to
competitively purchase 8,000 solar energy credits each year during 10 years.
Both solar farms and businesses and institutions with large rooftop solar panel
systems will be eligible to participate. This competitive RFP will be similar to
others PECO has used to purchase renewable energy credits in recent years. Since
PECO`s first wind energy credit RFP in March 2008, the company has signed
agreements to purchase more than 2.2 million renewable energy credits during
five years.

Other PECO environmental projects include the installation of a green roof and
new Crown Lights on the company`s Center City headquarters; the opening of
PECO`s first `green building` in West Chester, recently awarded silver
certification for Leadership in Energy and Environmental Design (LEED);
improvements to secure LEED certification for many other company work sites; the
increased use of hybrid and biodiesel vehicles; support for community
environmental projects; and enhanced tools and programs to help customers use
energy more efficiently.

These efforts support a broader environmental initiative at PECO and also are a
component of Exelon 2020: A Low-Carbon Roadmap, the comprehensive environmental
strategy of PECO`s parent company. Exelon 2020 sets the goal of reducing,
offsetting or displacing more than 15 million metric tons of greenhouse gas
emissions per year by 2020. This is more than the company`s current annual
carbon footprint and is equivalent to taking nearly 3 million cars off American
roads and highways.

For more information visit www.peco.com/AEPS.

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.

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, Philadelphia
Cathy Engel
215-841-5555
catherine.engel@peco-energy.com

Copyright Business Wire 2009