How to Choose a Solar Mounting Structure
ENSOL Engineering TeamPublished 2026-02-051 min read
Choosing a solar mounting structure means matching the application, the site conditions, the coating and the steel to your project. Get these right and the structure lasts the life of the plant; get them wrong and you pay in corrosion or over-spend on steel.
1. Start with the application
Rooftop, ground-mount, solar pump, carport, agrivoltaic, canal-top and tracker structures are engineered differently. Fix the application first — it sets the geometry, tilt and load path.
2. Assess the site (wind + soil)
The site's IS 875 basic wind speed and terrain set the loads; a soil test sets the foundation. Coastal or high-wind sites need heavier design and more durable coatings.
3. Pick the coating for the environment
GP suits sheltered rooftops; Galvalume and ZAM suit many environments; HDGI is best for ground-mount, coastal and long-life needs. Match coating to corrosivity, not just budget.
4. Confirm steel grade and sections
Structural steel to IS 2062 with the right grade and section balances strength, weight and cost. Insist on documented grade and coating thickness.
Quick checklist
Application fixed; site wind speed and soil known; coating matched to environment; steel grade and coating thickness specified; design proof-checked where required (e.g. NIT Raipur for PM-KUSUM).