There are a few main factors to consider including the following:
– The best roof orientation for a solar power system is a south-facing roof if you are north of the equator. East and west is also good. North facing slopes tend to produce a little less
– A 35 to 50 degree roof tilt is optimal for year-round energy production
– A roof that is clear from major obstructions such as trees, skylights or too many vent
– A roof that has adequate space is key. A typical solar system averages approximately 50-100 square feet per kilowatt
– Clear access to the sun for most of the day unobstructed by trees, roof-gables, chimneys, buildings and other features of your home or surrounding landscape
– A roof in good condition