A major power outage is affecting over 7,500 National Grid customers.

The outage includes customers in parts of Utica, Chadwicks New Hartford, Washington Mills, Sauquoit, Paris. Clayville and Cassville.

According to the National Grid website, power is expected to be restored by 5:45 this evening.

It's not clear what caused the outage.

More From WIBX 950