Web Content Viewer (JSR 286)

Tehachapi Renewable Transmission Project

Delivering Renewable Power Affordably Throughout Southern California

The Tehachapi Renewable Transmission Project will deliver electricity from new wind farms in the Tehachapi area to SCE customers and the California transmission grid. Consisting of new and upgraded electric transmission lines and substations between eastern Kern County and San Bernardino County, it plays a vital role in meeting California’s renewable energy goal of 33 percent by the year 2020.

Answers to Common Questions

When our infrastructure projects affect surrounding communities, there may be questions. We are committed to keeping you informed and up to date. Common questions include:

  • Why our proposal uses overhead electric transmission lines instead of underground
  • Why underground lines are so much costlier
  • How infrastructure decisions are made by regulators


Go to Questions & Answers >

Project Updates

 

 

Neighboring Communities

  • Kern County: Tehachapi and unincorporated areas including Rosamond, Mojave
  • Los Angeles County: Altadena, Baldwin Park, Diamond Bar, Duarte, El Monte, Hacienda Heights, Industry, Irwindale, Lancaster, La Canada Flintridge, La Habra Heights, Monrovia, Montebello, Monterey Park, Palmdale, Pasadena, Rosemead, Rowland Heights, San Gabriel, Santa Clarita, Whittier, Acton, Avocado Heights, Antelope Acres, Leona Valley, Vincent, Quartz Hill
  • San Bernardino County: Chino, Chino Hills, Ontario

Project Details

The project includes transmission facilities equaling 250 miles (spanning an area of approximately 173 miles) that will deliver electricity from renewable wind energy generators in Kern County southward through Los Angeles County and eastward to the existing Mira Loma Substation in Ontario.

Status

  • Segments 1-3: Construction is complete on all segments.
  • Segments 4-11: Construction is complete on segments 4-7 and 9-11. Construction is also complete for almost all of the overhead portion of segment 8. Construction is underway on the 500 kV underground section of segment 8 and adjacent overhead sections (Chino Hills/Chino).

Project Timeline

  • Fall, 2004: Submitted application to the CPUC for authorization to construct segments 1-3
  • Spring, 2007: Community open houses for segments 4-11 and CPUC project approval of segments 1-3
  • Summer, 2007: Submitted application to the CPUC and the U.S. Forest Service for authorization to construct segments 4-11
  • Fall, 2009: CPUC project approval of segments 4-11 and completion of segments 1, 2 and 3A
  • Spring, 2010: Start of construction of segments 4-11
  • Fall, 2010: USFS project approval of segments 4-11
  • Spring, 2012: Completion of segment 4 and segment 10 and start of construction of segment 3B
  • Fall, 2012: Completion of segment 3B
  • Winter, 2013: Completion of Segment 5.
  • Spring, 2014: Segment 6 completed
  • Summer, 2014: Start of construction of 500 kV underground section of segment 8 (in portions of Chino Hills and Chino)
  • Winter, 2014: Segment 7 completed
  • Spring, 2015: Segment 8 (overhead portion only) and Segment 11 completed
  • Late 2016: Anticipated overall project completion

Contact Information

For general information about this project or to be added to our mailing list, please call our toll-free project hotline at 1-877-795-8787 or email us at trtp@sce.com.

Interested in working with SCE as a supplier? Learn more.

Construction Updates & Newsletters

June 2016


March 2016


December 2015


June 2015


March 2015

  • TRTP Construction Update (San Bernardino County) (Print / Mobile)
  • TRTP Construction Update (San Gabriel Valley) (Print / Mobile)
  • TRTP Construction Update (North Los Angeles and Kern Counties) (Print / Mobile)


December 2014

  • TRTP Construction Update (San Bernardino County) (Print / Mobile)
  • TRTP Construction Update (San Gabriel Valley) (Print / Mobile)
  • TRTP Construction Update (North Los Angeles and Kern Counties) (Print / Mobile)


September 2014

  • TRTP Construction Update (San Bernardino County) (Print / Mobile)
  • TRTP Construction Update (San Gabriel Valley) (Print / Mobile)
  • TRTP Construction Update (North Los Angeles and Kern Counties) (Print / Mobile)

 

Web Content Viewer (JSR 286)