How much sun do I need to make a home solar power system worthwhile?
In general, the more sun your home solar power system gets, the better return you’ll get on your money. The best roofs (or space for a ground mount) get several hours of sun a day, face south or south west and don’t have too much shade. SunRun will assess if your roof gets enough sun to make solar cost-effective and a good investment. Sometimes we can do this imply by viewing a satellite image and other times we will recommend a free onsite consultation. Across most of the United States, ignoring shade issues on any particular home, the amount of available sunlight is surprisingly uniform, with most areas within plus/minus 20% of the sunlight level of Miami, Florida. The National Renewable Energy Laboratory (NREL) has sunlight data on 239 locations across the U.S. and its territories.
