Solar Panel Tilt Angle Calculator 📐

How to Use the Solar Panel Tilt Angle Calculator

Enter your latitude to calculate the optimal tilt angle. Improved formulas: Annual ≈ (lat × 0.76) + 3.1°, Summer ≈ (lat × 0.93) − 21°, Winter ≈ (lat × 0.875) + 19.2°.

The monthly optimal angle table uses solar declination to compute the ideal tilt for each month. Adjusting your panels seasonally can increase energy harvest compared to a fixed angle.

In the Southern Hemisphere, panels should face north. Enter a negative latitude value and the calculator will automatically detect the hemisphere.