What is the minimum angle suggested for mounting solar collectors on a flat roof?

The minimum angle suggested for mounting solar collectors on a flat roof is related to geographical latitude. This angle is important because it helps optimize solar energy collection based on the sun's path in the sky throughout the year.

The geographical latitude is crucial because it directly affects how high the sun rises and sets, which in turn influences how much solar energy can be harvested. Generally, mounting solar panels at an angle close to your geographical latitude maximizes exposure to sunlight, especially during winter months, when the sun is lower in the sky.

Selecting this angle can improve the efficiency of the solar collectors by ensuring they are oriented properly toward the sun for most of the day. This makes using geographical latitude the most appropriate guideline for determining the ideal angle for mounting solar collectors on flat roofs.