El Centro, CA (IID Service Territory)

Sol Orchard, Imperial I is a 25MWdc/20MWac Solar PV power facility commissioned and built in Q3-2013 in El Centro, CA. The project was interconnected with the IID’s transmission system at 92-kV. The project will provide enough power for 7,500 homes.

SUSTINEO provided engineering design services for civil, electrical, and structural engineering. Sustineo acted as the engineer of record for electrical single-lines, as well as coordinated with the Authority Having Jurisdiction on permitting review and approval. Site walks were conducted regularly with a multi-disciplinary engineering team advising on geotechnical, structural, electrical, and environmental issues.


  • Utility Scale PV Plant ~ 25MWdc
  • 92k Interconnection Voltage
  • Onsite Substation
  • 220 Acres
  • Single Axis Tracking mc-Si Modules
  • 1000Vdc Design
  • 15 Powerstations/Inverter Skids
  • Annual Production ~ 54,000-MWh


  • 70 M