The Exelon-Pepco merger looked in danger of failing Tuesday as D.C.'s mayor and consumer advocate said they would not accept new terms offered by D.C. regulators.Modify your meta description by editing it right here

D.C. regulators today denied Exelon’s $6.8 billion acquisition of Pepco but said they would approve the deal with additional concessions.

Exelon's Clinton reactor will take part in MISO’s spring capacity auction, keeping the reactor functioning throughout the 2016/17 operating year.

D.C. Mayor Muriel Bowser and Exelon CEO Chris Crane announced Tuesday that Exelon would quintuple its concessions to $78 million in a bid to win the Public Service Commission's OK for the company’s $6.8 billion acquisition of Pepco Holdings Inc.