Leatherneck Substation Project
Upgrading Infrastructure Near Twentynine Palms
This project will provide a new substation aboard the Marine Corps Air Ground Combat Center, and will include improvements to the nearby Carodean and Hi Desert substations.
Twentynine Palms and adjacent unincorporated areas
- A new 115/33kV substation
- Upgrades to both the existing Carodean Substation (located on Two Mile Road and Lear Avenue) and the Hi Desert Substation (located near Dortin Place next to Highway 62).
- Overbuilding* existing 33kV lines between these two substations and the new Leatherneck Substation with new 115kV sub-transmission lines (approximately 9 miles in length), to be supported with a combination of new lightweight and tubular steel poles.
*Overbuilding means installing a new circuit above existing facilities. It may require replacing existing poles with new poles along the same pole route.
Project is complete.
- May, 2011: We filed project application with the CPUC
- September, 2011: CPUC approval of project
- June, 2012: Began construction on military base
- July, 2012: Began construction off military base
- January, 2014: Construction was complete. Leatherneck Substation entered service.
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