This article explores how steel-based mounting solutions form the backbone of modern solar projects while addressing critical factors like material selection, design optimization, and cost-efficiency. Steel remains the most widely used material in solar photovoltaic support structures, accounting. The optimization of steel structural systems for solar panel (SP) installations is crucial for improving energy eficiency and reducing costs in renewable energy systems. This model was used in the free webinar "Design of Steel Support for Photovoltaic Panels in RFEM 6" on July 17, 2024.