What is the optimal tilt angle for solar panels in summer?

The optimal tilt angle for solar panels during the summer is typically calculated by adjusting the latitude of the installation location to maximize solar exposure based on the sun’s elevation during that season. In regions with a defined latitude, the sun is higher in the sky during the summer months, so a lower tilt angle is needed to capture sunlight efficiently.

Subtracting 10 to 15 degrees from the latitude allows the panels to maintain an ideal angle relative to the more direct rays of the sun. When the tilt is decreased by that range (latitude -10 to -15 degrees), it aligns the panels better with the sun’s arc during the summer, resulting in increased energy production.

This adjustment takes into consideration the seasonal changes in the sun's path, which peak higher during summer, allowing for optimal energy generation.