More than 2,400 Ameren Missouri customers in Franklin County lost power after high winds on Sunday.
Pacific was the hardest hit area.
Electricity has been restored to all Franklin County customers, according to Ameren.
Ameren has 44,331 customers in Franklin County.
Field crews had restored power to more than 53,000 customers in the region as of Monday.
The outages were caused by high winds that whipped through the area on Sunday, a news release from Ameren states.
Ameren Missouri deployed more than 1,000 workers to assist with the response.