The tilt of solar panels affects their energy output by influencing the angle of incidence between the sun’s rays and the panel surface. A tilt angle that matches the latitude of the installation location is generally considered optimal, as it allows the panels to receive the most direct sunlight throughout the year. For example, a location at 30° latitude would have an optimal tilt angle of around 30°. However, the optimal tilt angle may vary depending on the specific installation and local climate conditions.