If you are planning to have rooftop solar panels installed, you are installing something to last for 25 long years. So, before doing this, it is a smart idea to ensure that the roof structure has the capacity to withstand the panel weights.

A typical 250 watt crystalline panel has a weight of 20 kg.

Use this benchmark and compare it with the weight bearing capacity of your roof – you can get technical details about your roof from any construction/civil engineer known to you.Please use the following table for an idea on suitability of your roof for solar power plants:

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Stuff to Remember

Most roofs are designed to withstand the weight of solar panels. However, If your roof is of asbestos or plastic or is very old, make sure you consult a structural engineer before putting up the panels.