Desert Rainbow Generation Tie-Line
The Desert Rainbow Generation Tie-Line Project (Gen-Tie Project) would interconnect the proposed Desert Rainbow Project, a photovoltaic electricity generation and battery energy storage system facility (Generation Project), to the regional transmission grid at a point of interconnection (POI) located at the existing Salt River Project (SRP) Pinal West to Jojoba 500-kilovolt (kV) transmission line.
Location
The Gen-Tie Project would originate at the Generation Project substation, located in proximity to West Riggs Road and between South 155th Avenue and South Bullard Avenue, and would interconnect into a POI along the existing SRP Pinal West to Jojoba 500-kV transmission line. See the figure below for the location of Gen-Tie Project’s route options.
Project updates
AES will be filing a Certificate of Environmental Compatibility (CEC) application before the Arizona Corporation Commission (ACC) for the Desert Rainbow Gen-Tie Project and invite you to join the virtual community meetings to discuss the project details and address any questions you may have.
Community Meetings:
Virtual (Zoom)
Date: September 22, 2026
Time: 12:00 PM & 5:30 PM
Register to attend the virtual community meetings