More than 220 National Grid customers along Route 98 south of the city are without power.
The National Grid web site says the power outage effects the town and village of Alexander as well as part of the Town of Batavia.
National Grid estimates power will be restored about 5:30 p.m.
UPDATE 4:14 p.m.: Power has been restored. Steve Brady at National Grid said it was a short outage that was necessary to replace a failing lightning arrester. It's safer to take power offline to make a quick, but much needed repair. "It was an unplanned, planned outage," Brady said. Normally, National Grid likes to notify customers of planned outages, but when this particular faulty arrester was found, engineers decided it should be replaced right away to avoid a bigger problem later. (Lightning arrester pictured)