Wind Zones of India and What They Mean for Solar
ENSOL Engineering TeamPublished 2026-02-02Updated 2026-02-111 min read
IS 875 (Part 3) divides India into basic wind speed zones. Where a site falls on that map — and its terrain and topography — decides the loads a solar structure must resist.
The wind-speed map
Basic wind speeds range from about 33 m/s in sheltered interior regions to 55 m/s in cyclone-prone coasts. Coastal Andhra Pradesh, Odisha, Gujarat, Tamil Nadu and West Bengal carry higher values.
What higher zones mean
Because pressure scales with the square of wind speed, higher zones sharply increase loads, calling for heavier sections, stronger foundations and, near coasts, more durable coatings.