Some 1,270 customers are without power in the Darien Area, around Richley Road, but the cause has not yet been determined, a spokesman for National Grid said.
Stephen Brady said crews have been dispatched to investigate the issue and devise a repair.
A Genesee County dispatcher said there was no related emergency call that might help suggest a cause for the outage. Dispatchers have received several calls from residents about the outage. They know about it, but don't know why it happened and have no further information to provide to callers.
The incident has been reported as three separate outages.
We'll update this post with more information as it becomes available.
UPDATE 12:46 p.m.: Stephen Brady, spokesman for National Grid, said: "Stations and lines were re-energized at 11:24 a.m." There was a problem found with National Grid equipment on one of the utility's lines that caused a trip, he said.