Some 8,000 customers were in the dark for more than hour Tuesday night in Calvert County, Maryland.
Those in the dark were over 99% of BGE customers in the county.
Power was slowly restored after 10 p.m.
There’s were also more than 2,000 outages reported in Anne Arundel County.
BGE said a repair crew was on the way and the lights should return at around 10:45 p.m.
No reason has been give for the cause of the outage.
WTOP has reached out to BGE for comment.