The City of Naperville operates a Department of Public
Utilities, which includes a municipal electric utility.
Naperville’s electrical distribution system is nearly 90%
underground, except in older areas of town where overhead
facilities are still utilized. The nominal voltage of the system
is 12.47kV transformed from 34.5kV and 138kV. There are 6
points of service on the 138kV transmission system from bulk
power providerComEd. The City does not have generation
capability at this time.