News
July 23, 2026

Terra-Gen Completes 365 MW California Solar and Storage Complex With Lockhart IV Project

Construction Owners Editorial Team

Highlights

  • Terra-Gen has placed the 80 MW Lockhart IV solar project into commercial operation in San Bernardino County, California.
  • The milestone completes the four-phase Lockhart Solar and Storage complex, totaling 365 MW of solar generation and 173.7 MW of battery energy storage.
  • The project is expected to supply electricity for approximately 40,000 homes and businesses through a long-term power purchase agreement.
  • Construction created more than 220 peak jobs, with Cupertino Electric serving as the engineering, procurement and construction contractor.

The completion of a utility-scale renewable energy project in Southern California expands the state's solar generation and battery storage capacity while supporting grid reliability. Terra-Gen has commissioned the final phase of its Lockhart Solar and Storage development, bringing the multi-phase energy complex to full operational capacity.

Final Solar Phase Brings Lockhart Complex Online

The newly operational Lockhart IV project adds 80 megawatts of solar generation to Terra-Gen's renewable energy portfolio in San Bernardino County, California.

With the project's completion, the Lockhart Solar and Storage complex now provides a combined 365 MW of solar capacity and 173.7 MW of battery energy storage across four development phases.

The facility is designed to generate enough electricity to serve approximately 40,000 homes and businesses annually under a long-term power purchase agreement. Overall, the completed complex has the capacity to support the annual electricity needs of more than 350,000 homes and businesses.

Construction and Grid Integration

The Lockhart Solar and Storage complex occupies approximately 4,000 acres of privately owned land and includes nearly one million solar modules and 248 battery storage enclosures.

Cupertino Electric served as the engineering, procurement and construction contractor for Lockhart IV. Construction generated more than 220 jobs at peak activity, with project teams completing over 122,000 work hours without a reported lost-time incident.

The facility is interconnected through the existing transmission infrastructure serving Southern California Edison’s Kramer Junction Substation.

Terra-Gen, jointly owned by Masdar and Igneo Infrastructure Partners, continues to expand its U.S. portfolio of utility-scale solar, wind and energy storage projects.

Why It Matters

Large hybrid solar and battery storage projects are becoming an increasingly important part of utility-scale energy development. For construction owners, EPC contractors and developers, projects like Lockhart demonstrate the growing demand for integrated renewable energy facilities that combine solar generation with battery storage to improve grid flexibility and meet rising electricity demand.

Source: Solar Quarter.

Get the inside scoop on the latest trending construction industry news and insights directly in your inbox.

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.