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.

The future of the Cayuga coal-fired generator is in jeopardy following the state’s Public Service Commission’s rejection of a natural gas repowering plan.

Lawyers for Maryland and Competitive Power Ventures got little support from Supreme Court justices during oral arguments in the latest federal-state jurisdiction case Wednesday.

PJM’s first 2016 proposal window for reliability projects opened Feb. 16 and will close March 17.

The Clean Power Plan was the hot topic at the NARUC winter meetings, but attendees also heard discussions about the growth of wind and a debate on capacity markets.

NARUC ended its winter meetings with an interview of Ted Koppel, whose 2015 book “Lights Out” alleges the U.S. is unprepared for the threat of cyberattacks on the nation’s grid.

New York regulators OK'd a contract to keep the struggling R.E. Ginna nuclear power plant operating through March 2017.

Closure of the FitzPatrick nuclear plant will leave New York at least 325 MW short of its generation requirement by 2019, NYISO says.

The PJM Operating Committee discussed cold-weather testing and the RTO's upcoming annual security drill.

PJM and the Independent Market Monitor asked FERC to revise Capacity Performance rules to address concerns that generators might ignore dispatch instructions to avoid penalties.