Cherokee to Mapleton to Substation A Transmission Project
Overview
As part of the Denver Metro Transmission Upgrades, we plan to rebuild an existing 115-kilovolt electric transmission line that connects the Mapleton and Cherokee substations in Adams County, along the existing corridor to further increase reliability and future distribution services. Additionally, a new transmission line will be constructed from the Mapleton substation to a new substation (Substation A). The new transmission line will follow the existing transmission line corridor using upgraded equipment to accommodate expected electrical load growth in the north Denver metro area.
New electric transmission line:
- Mapleton substation to new Substation A
Rebuilt electric transmission lines:
- Cherokee substation to Mapleton substation
The Mapleton to Cherokee to Substation A Transmission Project is part of a multi‑year effort to rebuild and upgrade vital, higher voltage transmission infrastructure across the Denver Metro area as part of the Denver Metro Transmission Upgrades.
This map is a graphic and may not show exact locations
Schedule
Work is expected to occur between January 2029 and June 2030.
Schedules are subject to change.
