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TRTP Undergrounding
TRTP Hotline Website and Email Card

Southern California Edison’s project to underground the Tehachapi Renewable Transmission Project has been underway since September of 2013.  Multiple contractors constructed the project in order to reduce the impact on Chino Hills residents.  Cable installation is complete throughout the utility right-of-way.  Barring any unforeseen circumstances, the TRTP line will be energized during the fourth quarter of 2016.

This project is the first of its kind in the United States.  SCE and the City of Chino Hills want to thank Chino Hills residents for their patience as the final milestone of the project is 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.

Construction Impacts - October & November 2016

  • Construction is essentially complete  
  • The right-of-way is being restored with drought tolerant plants in areas that previously had vegetation 
  • Some areas will be hydro-seeded or covered with mulch 

Energizing Activities

SCE is preparing to energize and enter into service the 500kV line (tentatively scheduled to occur in mid-November 2016).  Commissioning activities will take place at 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

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

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

TRTP History 

TRTP Chino Hills Undergrounding Project Area
Construction Area Map

SCE Undergrounding Presentation
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)