About 2,300 Hydro One customers in Chatham-Kent and Lambton County were briefly without power on Thursday.
The outage covered Mitchell's Bay, Dover, and nearly all of Chatham and Wallaceburg.
Nearly all of the affected customers were in Chatham-Kent, with some living in Lambton County, north of Wallaceburg.
Initially, Hydro One expected power to be back around 6:30 p.m. The issue seemed to be resolved just before 5 p.m.