How to calculate the amount of solar power that can be generated from a rooftop?

Solar panels are required to generate solar power. The amount of solar power generated can be calculated depending upon the number of solar panels that can setup. Using more solar panels will generate more solar panels. The amount of solar power generated also depends on the type of solar panels used.

On an average, 100 to 125 Watts of solar power can be generated from 1 sq.ft of space per day.