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8
Exelon Highlights
1886 & 1887
The Edison Electric Light
Company of Philadelphia
and Chicago Edison
Company, respectively,
are incorporated.
1902 & 1907
Edison Electric Light
Company of Philadelphia
becomes Philadelphia
Energy Company (PECO),
and Commonwealth
Edison is created by
the merger of
Chicago Edison and
Commonwealth Electric.
1928
PECO opens Conowingo
Hydroelectric Station
on the Susquehanna
River in Maryland, at the
time the second-largest
hydroelectric dam in the
U.S. behind Niagara Falls.
1956
PECO and eight other
utilities, including
Baltimore Gas and
Electric Company
(BGE), establish the
PJM Interconnection to
realize the benefits and
efficiencies of sharing
generating resources;
Commonwealth Edison
joined in May 2004.
1960s
The first generation of
commercial nuclear
plants is built and
brought online, including
Commonwealth Edison’s
Dresden 1, PECO’s Peach
Bottom 1 and Oyster
Creek, acquired by
AmerGen in 2000.
1994
Commonwealth Edison
renamed Unicom in
rebranding; the utility
becomes ComEd.
1997
PECO launches AmerGen
with British Energy (BE)
to acquire and operate
U.S. nuclear power plants.
AmerGen purchases Three
Mile Island Unit 1, Clinton
and Oyster Creek; Exelon
bought BE’s stake in 2003.
Illinois enacts the
Electric Service Customer
Choice and Rate Relief
Law, and Pennsylvania
the Electricity Generation
Choice and Competition
Act, ushering in utility
restructuring and
paving the way for
customer choice.
1998
John W. Rowe joins
Unicom as its chairman,
president and chief
executive officer, focused
on leading the company
through industry
restructuring and
the company’s
nuclear recovery.
EXELON HIGHLIGHTS