REPORT/RECOMMENDATION TO THE BOARD OF SUPERVISORS
OF SAN BERNARDINO COUNTY
AND RECORD OF ACTION
January 27, 2026
FROM
MIGUEL FIGUEROA, Director, Land Use Services Department
SUBJECT
Title
Appeal of the Planning Commission's Decision Approving the Sienna Solar Project
End
RECOMMENDATION(S)
Recommendation
1. Conduct a public hearing to consider an appeal (PAPL-2025-00003) of the Planning Commission's decision approving Project No. PROJ-2022-00013 consisting of a Conditional Use Permit application to construct and operate a single-axis tracker ground-mounted photovoltaic utility-scale solar facility generating up to 525 megawatts and battery energy storage system up to 525 megawatts on approximately 1,854 acres (27 parcels), with associated gen-tie towers/lines ranging in length from 3-5 miles (39-51.4 miles analyzed) to the point of interconnection at the future Southern California Edison Calcite substation.
* Appellants: Morongo Basin Conservation Association, et al.
* Applicant: Avantus LLC
* Community: Lucerne Valley
* Location: Generally addressed at 33850 Granite Rd., Lucerne Valley, CA 92356
2. Deny the appeal and uphold the Planning Commission's decision approving Project No. PROJ-2022-00013 by taking the following actions:
a. Certify the Environmental Impact Report (SCH No. 2022080518).
b. Adopt the California Environmental Quality Act Findings, Statement of Overriding Considerations, and Mitigation Monitoring and Reporting Plan.
c. Adopt the findings for approval of the Conditional Use Permit.
d. Approve the Conditional Use Permit to construct and operate a single-axis tracker ground-mounted photovoltaic utility-scale solar facility generating up to 525 megawatts and battery energy storage system up to 525 megawatts on approximately 1,854 acres (27 parcels) with associated gen-tie towers/lines ranging in length from 3-5 miles (39-51.4 miles analyzed) to the point of interconnection at the future Southern California Edison Calcit...
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