Castle Rock Transmission Rebuild

Xcel Energy is building a better, cleaner energy future by taking steps to create a smarter and stronger energy grid, for a more secure energy supply. This commitment includes replacing infrastructure reaching the end of its useful life.

Xcel Energy plans to rebuild approximately 25 miles of 115-kilovolt (kV) transmission lines connecting the Palmer Lake, Castle Rock, Crowfoot Valley, Happy Canyon and Daniels Park substations in Douglas County. The transmission lines were originally built in the 1950s. Due to natural weathering and the overall age of structures, they have reached the end of their useful life and will be replaced. New infrastructure will improve electric service reliability to homes and businesses in the region, withstand higher than normal windspeeds, proactively minimize the risk of wildfire and help meet the growing energy needs of homes and businesses for years to come.

Construction will take place within the Xcel Energy’s existing right-of-way. The project will be completed in several phases. The first phase, between the Palmer Lake and Castle Rock substations will begin in the 4th quarter of 2023. The second phase, which includes rebuilding the line between the Happy Canyon and Daniels Park substations will begin in Fall 2024. Subsequent phases will begin in 2025 and work should be complete by 2025.

Project Details

Schedule and next steps

For questions regarding this project, please email us at or call 303-571-7144.


Project information sheet (PDF)
Transmission Line Construction (PDF)
Wildfire Mitigation Program (PDF)
EMF Fact Sheet (PDF)
Safety around power lines (PDF)
Birds and power lines (PDF)