Adjusting the tilt guarantees your panels face the sun directly, capturing the most sunlight year-round. In summer, decrease the angle; in winter, increase it for better performance. . Learn tilt formulas, seasonal adjustments, and tips to maximize energy efficiency in 2025. Seasonal changes affect optimal angles, 3. But to get the most out of your solar system, you need to pay attention to how you orient and tilt your panels. In this article, we'll explain what are the common mistakes and challenges. . To determine the optimal solar tilt angle for photovoltaic panels, one must consider geographic location, seasonal changes, and household energy needs, with a common approach being to set the angle equal to the latitude for year-round efficiency.