Solar Panel Tilt Calculator
Estimate recommended tilt and azimuth from site latitude and season for commercial PV planning screens.
Quick answer
Yearly tilt ≈ latitude. Example: latitude 35° → tilt ~35°; summer ≈ lat−15, winter ≈ lat+15. Azimuth (NH) often 180° (true south). Hub: Solar calculator.
Quick Solar Panel Tilt Calculator
Yearly rule-of-thumb.
Advanced Solar Panel Tilt Calculator
Tilt & Azimuth Results
Engineering disclaimer
Planning estimate only. Roof pitch, racking limits, and shading dominate real yield—confirm on site.
Tilt by season
| Mode | Tilt ° |
|---|
People also ask
- Best tilt? ≈ latitude for yearly.
- Azimuth? True south (NH) / north (SH).
- Fixed roof? Use available pitch; accept yield loss.
Planning guidance
- Pair with peak sun hours and production.
- Hub: Solar calculator.
Typical scenarios
- Flat commercial roof: Ballasted tilt near latitude when structure allows.
- Winter-critical load: Prefer lat+15 screen.
- Steep existing roof: Accept pitch; do not force ideal tilt.
Formula (quick reference)
Tilt_year ≈ |latitude|; summer ≈ |lat|−15; winter ≈ |lat|+15 (clamp 0–60).
Azimuth: NH ≈ 180°, SH ≈ 0° (true).
Concept guide: solar panel tilt angle explained.
Frequently Asked Questions
How do I calculate solar panel tilt angle?
A common yearly rule is tilt ≈ site latitude. Summer/winter biases subtract/add about 15°.
What azimuth should I use?
In the northern hemisphere, true south (~180°) is typical; southern hemisphere true north (~0°).
What if my roof pitch is fixed?
Use the available pitch and accept seasonal yield differences—structure and waterproofing come first.
Is this for DIY camping kits?
No—commercial/industrial planning screens. Confirm shading and racking on site.
What is the next step?
Estimate production with your tilt assumptions, then size the array.
How it works
Rule-of-thumb tilt tracks latitude for annual energy; seasonal bias shifts toward summer or winter sun angles. Azimuth defaults face the equator.