A solar plant lives or dies on its structures. Modules are a commodity; the mounting system is what keeps them in place and producing for 25 years across India's extremes of wind, heat, and corrosion. This is a practical framework for getting the structural choice right.
Site Loads Come First
Begin with the governing loads: the basic wind speed for the location per IS 875 Part 3, the seismic zone, and any snow or accumulation considerations for high-altitude sites. Coastal and desert sites in particular push wind design well beyond the national average and must be designed site-specifically rather than from a catalogue.
Foundations and Soil
Soil type determines the foundation strategy — driven piles, screw piles, or concrete pedestals each suit different ground conditions. A proper geotechnical investigation prevents the most expensive class of solar plant failure: foundation movement after commissioning.
Materials and Orientation
Hot-dip galvanizing to the right coating thickness (per IS 4759) is non-negotiable for 25-year outdoor durability. Tilt angle and row spacing are then optimized for the latitude and inter-row shading, balancing generation against land use. Tracker structures add yield but demand tighter tolerances and more rigorous structural detailing.