The power company Wednesday said net income fell to $400 million, or 59 cents a share. That's down from $521 million, or 77 cents a share, in the first quarter a year ago.
Exelon says, excluding the influences of bad weather, higher expenses and other factors, operating earnings increased in line with management expectations.
Exelon also reaffirmed its 2006 operating earnings outlook range of between $3 and $3.30 per share.
Exelon is the parent corporation of ComEd. It distributes electricity to Rockford and northern Illinois and southeastern Pennsylvania.