The 138 kV portion of the transmission network currently includes approximately 63 circuit miles of overhead lines forming a complete loop around the system's service area. The purpose of the 138 kV network is to provide:
- generator outlet capacity for CWLP's Dallman Units 3 and 4 and the Interstate combustion turbine,
- bulk power supply to the lower voltage portion of the transmission network,
- a direct supply to some distribution substation transformers, and
- interconnections with other utilities.
The 138 kV transmission lines presently serve nine of the system's substations or switching stations, plus the village of Chatham, Illinois.
The system's distribution network consists of approximately 507 circuit miles of overhead 12.47 kV and approximately 442 circuit miles of underground 12.47 kV facilities.
Links to even more information about electric T&D at CWLP, as well as related topics, can be found in the left-hand column of this page.