How to use the Solar Panel Angle & Tilt Optimizer
The Formula
Year-round: tilt ≈ |latitude|. Summer: |latitude| − 15°. Winter: |latitude| + 15°. Azimuth faces true south (180°) in the Northern Hemisphere.
Practical Example
Most rooftop arrays use a single year-round tilt matching roof pitch. Seasonal adjustments help ground mounts in snowy climates.
About Solar Panel Angle & Tilt Optimizer
Tilt rules
Year-round: tilt ≈ |latitude|. Summer: |latitude| − 15°. Winter: |latitude| + 15°. Azimuth faces true south (180°) in the Northern Hemisphere.
Fixed vs. adjustable
Most rooftop arrays use a single year-round tilt matching roof pitch. Seasonal adjustments help ground mounts in snowy climates.
Frequently asked questions
Q: What about azimuth? A: Due south (north in southern hemisphere) maximizes annual energy in most locations. Q: Flat roof? A: Use tilt racks near latitude for better yield than flat.