As the Sept. 28 deadline approaches for Exelon and Pepco Holdings Inc. to appeal D.C. regulators’ rejection of their merger, Mayor Muriel Bowser is saying little to indicate how she feels about a second try by the companies to close the deal.

The D.C. Public Service Commission unanimously denied Exelon's proposed $6.8 billion acquisition of Pepco Holdings Inc., sparking applause in the hearing room and sending the shares of both companies tumbling on Wall Street.

The D.C. Public Service Commission will announce its decision on Exelon’s acquisition of Pepco Holdings Inc. at its open meeting 11 a.m. Tuesday.

The power outage that darkened the White House and much of D.C. on April 7 began with the failure of a 230-kV lightning arrester at a Pepco substation.

State regulators, consumer advocates, generators and the Independent Market Monitor asked FERC to modify its June 9 order largely approving PJM’s Capacity Performance plan.

The Maryland Public Service Commission voted 3-2 to approve Exelon's controversial acquisition of Pepco Holdings Inc. Friday, saying Exelon's reputation for service excellence was the deciding factor.

Exelon said first-quarter profit exceeded expectations, in part due to strong performances by PECO, Baltimore Gas and Electric and Constellation Energy.

Supporters and critics of the takeover of Pepco by Exelon are churning out newspaper opinion pieces, resolutions and public relations campaigns as the last holdouts to the deal approach deadlines to render decisions.

PJM and utility officials said yesterday they are still investigating what caused the failure of a 230-kV transmission line that briefly cut power to the White House and much of the D.C. area Tuesday afternoon.

Exelon CEO Christopher Crane provided insight into the struggles of the firm’s nuclear power plants during two days of testimony before the D.C. PSC on the acquisition of Pepco.