One of the most well-known renewable energy sources in the world is solar energy. The maximum output efficiency of the solar panel is 22%, and it is strongly influenced by a variety of internal and external factors. The first important exterior component to take into account when installing a PV panel on any roof is solar angles. That is why it’s important to learn about the angle of incidence and solar angle of incidence.

What is an Angle of Incidence?

An angle of incidence is the angle formed by a sunray and a surface-perpendicular line. In contrast to a surface facing the sun directly, which has a solar angle of incidence of zero, a surface that is parallel to the sun—as in the case of sunrise striking a horizontal rooftop—has a solar incidence angle of 90°.

Must Read: What Questions to Ask Before Getting Solar Panels?

What is Solar Incidence Angle?

The angle formed between the line from the surface passing through the center of the solar disc and the normal to the plane on which the Sun is shining is known as the solar incidence angle or solar angle of incidence on a plane of tilt and slope.

Regarding solar energy systems, a perpendicular line to the earth is determined by the angle of the sun’s rays; for instance, the earth directly facing the sun has an angle of zero incidences, while a surface parallel to the sun (such as a rooftop at sunrise) has an angle of 90 °. Sunlight that is incident at an angle of 90 degrees is more likely to be absorbed than at a lower angle to be reflected.


Elliot is a passionate environmentalist and blogger who has dedicated his life to spreading awareness about conservation, green energy, and renewable energy. With a background in environmental science, he has a deep understanding of the issues facing our planet and is committed to educating others on how they can make a difference.

Leave A Reply