The resulting fire burned the equipment so badly that the cause of the blast could not be determined, executives said.

The utility says it found no warning signs before a Fourth of July transformer blast and is adding new monitoring technology ...

Firefighters put out a fire in a capacitor bank on top of a roof in Northwest D.C.

USPS says its operations were stifled after the weekend fire caused a power outage in the area. It's working to get back on track.