Copper Mountain Solar 2

Industry: Utility

"Despite a fast-track schedule and logistical challenges at the site, Cupertino Electric did a great job of anticipating our needs, delivering quality work and serving as a true extension of our team. The team on this project was both conscientious and committed, which was essential to the project's success."

John Sowers, VP of Operations
Sempra U.S. Gas & Power

Project Details

Substation & 230 kV transmission line serving 150 MW solar plant
Sempra U.S. Gas & Power
Boulder City, Nev.
Project Size:
Substation serving 150 MW solar plant
Electrical contractor

Project Summary

This substation project for Sempra U.S. Gas & Power in Boulder City, Nevada services an addition to one of the largest thin-film photovoltaic (PV) solar plants in the U.S. In addition to the substation scope of work at the Copper Mountain Solar 2 site, Cupertino Electric installed a 230kV transmission line spanning one-and-a-half miles to connect the solar farm’s substation with an existing Phase 1 solar substation. 

Connecting the solar farm to the grid, the Cupertino-Electric built substation facilitates the delivery of power from the solar modules to customers of PG&E, who is purchasing the power generated by the Copper Mountain Solar 2 site. Construction of the substation began in late 2011 was completed in the summer of 2012.

When the second phase of construction is complete in 2015, the project’s entire operating capacity will be 150 MW and is expected to generate enough energy to power 45,000 homes.  For more information on the project, visit Sempra’s website or view a publicly-available press release online.