Southern California Edison’s project to underground the Tehachapi Renewable Transmission began in September of 2013 and is essentially complete.  Multiple contractors constructed the project in order to reduce the impact on Chino Hills residents.  The TRTP line was energized in the fourth quarter of 2016.

SCE Fourth Quarter 2016 NewsLetter 

This project is the first of its kind in the United States.  SCE and the City of Chino Hills wants to thank Chino Hills residents for their patience as the final milestone of the project was reached.  If you have any questions about the project, please contact SCE on the project hotline at 877-795-8787 or visit the SCE website at www.sce.com/trtp.

Energizing Activities

SCE energized the 500kV line, and there are two transition stations; the Eastern Transition Station (Pipeline Ave north of Chino Hills Pkwy) and Western Transition Station (southwest of western end of Eucalyptus Ave).  
Transition Station Brochure

TRTP History

September 2016 - SCE Letter to Adjacent (300 ft.) Residents Regarding Energizing

October 2016 - SCE Letter to Residents (700 ft.) Regarding Energizing

TRTP History 

For a general overview of the undergrounding plans for the Southern California Edison (SCE) Tehachapi Renewable Transmission Project (TRTP), review the SCE update which was presented at the Tuesday, September 23, 2014 City Council meeting by clicking on the links below: 
 
Undergrounding Construction Update Video (September 23, 2014) 
 
Undergrounding Construction Update PowerPoint 
 
Southern California Edison TRTP 3rd Quarter Newsletter

Construction Update:
Southern California Edison Construction Traffic Impacts Update (February 2015)