A significant discussion on solar panel glare mitigation took center stage at the Riverside County Airport Land Use Commission meeting on June 12, 2025. The commission reviewed a comprehensive study highlighting design considerations that can effectively reduce glare from solar panels, particularly in proximity to March Air Reserve Base.

Key findings from the study emphasized that the tilt orientation, building materials, and mounting systems of solar panels play crucial roles in glare reduction. Fixed mount stationary panels were identified as less efficient compared to tracking systems that adjust to the sun's trajectory. The study noted that all 26 projects analyzed utilized fixed mount systems, which increase glare potential as the sun's angle changes.

The commission discussed various materials used in solar panel construction, revealing that different glass textures can absorb light more effectively. Anti-reflective coatings were recommended to further minimize glare, especially at high incidence angles. The study's findings indicated that smooth glass surfaces reflect more concentrated sunlight, while rough surfaces diffuse light, reducing glare intensity.

In light of these findings, the commission proposed a policy to mitigate glare risks. They recommended reaffirming the existing solar policy that prohibits yellow and red level glare while allowing only green level glare. Additionally, all new solar panel projects would be required to incorporate either anti-reflective coatings or textured glass to enhance efficiency and address glare concerns.

This proactive approach aims to balance the growth of solar energy projects with the safety and operational integrity of nearby air traffic, ensuring that advancements in renewable energy do not compromise aviation safety. The commission's recommendations are set to shape future solar developments in Riverside County, promoting both sustainability and safety.