Exelon Generation Extends Exchange Offer

  Exelon Generation Extends Exchange Offer

Business Wire

CHICAGO -- February 6, 2013

Exelon Generation Company, LLC (Generation) announced today that it will
extend the deadline with respect to its exchange offer to exchange (i)
$523,303,000 of its 4.25% Senior Notes due 2022 (new 2022 notes), which have
been registered under the Securities Act of 1933 (Securities Act), for
$523,303,000 of its currently outstanding 4.25% Senior Notes due 2022, which
were issued in a private placement in compliance with Rule 144A and Regulation
S under the Securities Act (outstanding 2022 notes); and (ii) $788,203,000 of
its 5.60% Senior Notes due 2042, which have been registered under the
Securities Act (new 2042 notes, and collectively with the new 2022 notes, the
new notes) for $788,203,000 of its currently outstanding 5.60% Senior Notes
due 2042, which were issued in a private placement in compliance with Rule
144A and Regulation S under the Securities Act (outstanding 2042 notes, and
collectively with the outstanding 2022 notes, the outstanding notes). The
terms of the new notes and the outstanding notes are substantially identical
in all material respects, except that the new notes have been registered under
the Securities Act.

The exchange offer was scheduled to expire at 5 p.m. New York City time on
Feb. 6, 2013. The exchange offer will now expire at 5 p.m. New York City time
on Feb. 12, 2013, unless further extended by Generation. The exchange offer
has been extended to allow holders of outstanding notes who have not yet
tendered them for exchange additional time to do so. All other terms,
provisions and conditions of the exchange offer, as described in the
prospectus dated Jan. 8, 2013, will remain in full force and effect. Holders
who have already properly tendered their outstanding notes do not need to
retender.

As of 5 p.m. New York City time, Feb. 6, 2013, $1,309,856,000 in aggregate
principal amount of the outstanding notes had been validly tendered and not
withdrawn in the exchange offer, representing approximately 99.87 percent of
the outstanding principal amount of the outstanding notes. Persons with
questions regarding the exchange offer should contact the exchange agent, U.S.
Bank National Association, at 651-466-7150.

A registration statement describing the Exchange Offer was declared effective
by the Securities and Exchange Commission on Dec. 7, 2012. This press release
shall not constitute an offer to sell or the solicitation of an offer to buy
any of the new notes or any other security, and shall not constitute an offer,
solicitation or sale in any jurisdiction in which, or to any persons to whom,
such offering, solicitation or sale would be unlawful.

Exelon Corporation (NYSE:EXC) is the nation’s leading competitive energy
provider, with approximately $33 billion in annual revenues. Headquartered in
Chicago, Exelon has operations and business activities in 47 states, the
District of Columbia and Canada. Exelon is the largest competitive U.S. power
generator, with approximately 35,000 megawatts of owned capacity comprising
one of the nation’s cleanest and lowest-cost power generation fleets. The
company’s Constellation business unit provides energy products and services to
approximately 100,000 business and public sector customers and approximately 1
million residential customers. Exelon’s utilities deliver electricity and
natural gas to more than 6.6 million customers in central Maryland (BGE),
northern Illinois (ComEd) and southeastern Pennsylvania (PECO).

Contact:

Exelon Investor Relations
Ravi Ganti
312-394-2348
ravi.ganti@exeloncorp.com
or
Exelon Corporate Communications
Paul Elsberg
312-394-7417
paul.elsberg@exeloncorp.com