How much space does the solar system require?
A. The general rule of thumb for calculating power output from a solar system is 1 kilowatt per 100 sq. ft. of panel area. For example, a 10kW system requires 1,000 sq. ft. of solar panels. So a typical 100 kW solar system (a medium sized commercial application) requires approximately 10,000 sq. ft. of panel area.