HOW TO USE IT
How to use the Solar Panel Tilt Calculator
- 1
Find your latitude: The panel tilt tracks your latitude. Higher latitudes need steeper tilts to catch the lower winter sun.
- 2
Pick the season to optimize: A year-round tilt equals about your latitude. Winter production improves by adding about 15°, summer by subtracting about 15°.
- 3
Factor in the roof pitch: If the panels mount flush, the roof pitch sets the tilt. A steep roof already provides some of the angle.
- 4
This is a preliminary guide: Use the Solar Panel Tilt Calculator for planning, but a real design needs professional sizing. These figures are guidance only.
THE MATH
Panel tilt calculation method
Start at your latitude for a year-round tilt, add 15° for winter and subtract 15° for summer. At latitude 34°, the annual tilt is about 34°, with 49° in winter and 19° in summer.A year-round tilt equals about your latitude. Winter production improves by adding about 15°, summer by subtracting about 15°.
PRACTICAL EXAMPLE
Worked example for Panel tilt
Start at your latitude for a year-round tilt, add 15° for winter and subtract 15° for summer. At latitude 34°, the annual tilt is about 34°, with 49° in winter and 19° in summer.
FAQ
Frequently asked questions
How do you set solar panel tilt?
Start at your latitude for a year-round tilt, add 15° for winter and subtract 15° for summer. At latitude 34°, the annual tilt is about 34°, with 49° in winter and 19° in summer.
What should I verify before using the result?
Flush mounting on a pitched roof is often simpler and cheaper than a fixed tilt frame. Compare before you build.
Is this a final quote or design?
No. Use it as a planning estimate, then confirm measurements, local rates, product requirements, permits and jobsite conditions before bidding or building.