Several factors influence how many hours of sun per day solar panels will be exposed to:
- When you will be using your system: summer, winter, or year-round.
- Typical local weather conditions
- Fixed mounting vs. trackers
- Location and angle of PV array
We have provided the following chart which shows ratings that reflect the sun hours per day available to generate electricity. Your solar array’s power generation capacity is dependent on the angle of the rays as they hit the solar panels. Peak power occurs when the rays are at the right angles to the panels.
If you use your system primarily in the summer, use the summer value. If you are using your system year-round, especially for a critical application, use the winter value. Using the cart, you should be able to determine a reasonable estimate of the sun’s availability in your area.