The average custodian salary at Edison Es was $24,986 , which is 6 percent lower than the average salary for this job in Oklahoma, and 65 percent lower than the national average for this job . Custodian salaries at Edison Es typically range from $23,500 to $23,691 (25th to 75th percentile). The highest reported custodian salary was $32,760. There are 5 employees at Edison Es with the job title custodian.