How much does an Electrical Maintenance Supervisor make hourly in the United States? The average hourly wage for an Electrical Maintenance Supervisor in the United States is $44 as of October 01, 2024, but the range typically falls between $38 and $51. Hourly rate can vary widely depending on many important factors, including education, certifications, additional skills, the number of years you have spent in your profession. With more online, real-time compensation data than any other website, Salary.com helps you determine your exact pay target.