Key Assumptions and Baseline Data

  • The daily electricity consumption of a classic RV varies significantly based on usage patterns and installed appliances.

    Note: Usage of high-power appliances (air conditioning, microwave, electric kettle) will substantially increase consumption.

  • Average Daily Consumption

    1.8 kWh

    conservative estimate

  • Peak Sun Hours

    4.5 hours

    average across most U.S. regions, accounting for seasonal variations

  • System Efficiency

    75%

    considering inverter losses, temperature, shading, dust, and other derating factors

Required Solar System Capacity Calculation

  • Required Capacity = 1800 Wh / (4.5 hours × 0.75) = 533 W
  • Recommended Capacity 600-800W 

(providing 25-50% margin for weather conditions and future expansion)

Number of Solar Panels

  • For 200W Panels:
    Number of Panels = 800W / 200W = 4 panels  
  • For 100W Panels:
    Number of Panels = 8000W / 100W ≈ 8 panels  

Optimal Panel Placement:

  • Primary Location: Unobstructed roof areas with maximum sun exposure
  • Mounting System: Low-profile fixed mounting with adequate ventilation gap (2-3 inches recommended)
  • Installation Method:Use aluminum brackets or stainless steel U-bolts secured to roof raftersImplement waterproof sealing with butyl tape and silicone sealantConsider tilt-adjustable brackets for seasonal optimization (15-30° adjustment)

This system design provides reliable off-grid power for typical RV applications while maintaining safety margins for variable weather conditions and usage patterns. Professional installation is recommended to ensure optimal performance and compliance with relevant standards.