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San Bernardino supervisors deny appeal, uphold Planning Commission approval for Sienna Solar project

San Bernardino County Board of Supervisors · January 28, 2026
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

After hours of testimony from residents, environmental groups and labor unions, the San Bernardino County Board of Supervisors voted to deny an appeal and uphold the Planning Commission's approval of the Sienna Solar Project, a proposed 525-MW solar and 525-MW battery facility in Lucerne Valley. Appellants raised CEQA, scenic-highway and dust concerns; the board found no legal basis to overturn the approval.

The San Bernardino County Board of Supervisors on Feb. 3 denied an appeal of the Planning Commission's approval of the Sienna Solar Project, upholding the commission's certification of the project's environmental impact report and conditional use permit.

The project, proposed by Avantis LLC, would permit up to 525 megawatts of photovoltaic generation and up to 525 megawatts of battery energy storage across a footprint the county describes as roughly 1,854 acres in the Lucerne Valley area. Land Use Services Director Miguel Figueroa and planning staff told the board the county analyzed multiple gen-tie routes and concluded the EIR and mitigation measures met CEQA requirements.

Why the board acted: The board's legal standard when hearing an appeal is whether the Planning Commission record contains a legally sufficient basis to overturn the prior action. After hearing extended presentations from the appellant, the applicant and more than two dozen members of the public, several supervisors said residents'…

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