Solar Structure Foundation Design Basics
ENSOL Engineering TeamPublished 2026-02-011 min read
The foundation transfers wind, seismic and dead loads from the structure into the ground. The right type depends on the soil, the loads (especially wind uplift) and installation constraints.
Common foundation types
Driven piles are fast where soil allows; concrete pedestals suit weaker or variable soils; ground screws (helical) give quick, low-disturbance installation in suitable ground.
Why soil investigation matters
A geotechnical investigation gives safe bearing capacity and pull-out resistance. Wind uplift often governs, so pull-out capacity — not just bearing — decides the design.