Power outage hits DC just before voting: what caused it

Parts of Washington, DC lost electricity shortly before voting was set to begin. The article text provided to me is only a headline and contains no further details, so I cannot confirm the duration, affected areas, cause, or how polling operations were impacted. The outage's exact timing relative to polls opening and any official explanation from utility providers or election authorities are not specified in the source. Readers should consult additional reporting for verified specifics on what happened.