Marine Solar Panel Calculator
Size a solar system for your boat
Daily Electrical Load
Location & Conditions
Solar System Requirements
Recommended Solar
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Minimum Solar
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Daily Load (Wh)
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Peak Sun Hours
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System Efficiency
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Daily Production
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Peak Sun Hours by Latitude
| Region | Summer | Winter | Annual Avg |
|---|---|---|---|
| Tropical | 5-6 | 4-5 | 5.0 |
| Subtropical | 6-7 | 3-4 | 4.5 |
| Temperate | 5-6 | 2-3 | 3.5 |
| High latitude | 4-5 | 1-2 | 2.5 |
Marine Solar Tips
Panel Selection
- Rigid panels most efficient
- Flexible panels for curved surfaces
- Marine-grade frames resist corrosion
- Consider partial shading tolerance
Controller
- MPPT 15-30% more efficient than PWM
- Size for total panel wattage
- Bluetooth monitoring helpful
- Temperature compensation important
Installation
- Ventilate panels - heat reduces output
- Use marine-grade wiring
- Fuse at panel and battery
- Keep wire runs short