RV Solar Calculator

Use your actual daily watt-hours if you know them. The result is a planning estimate, not an electrical design or code calculation.

Daily energy use (Wh)

Peak sun hours/day

Battery voltage

Battery autonomy (days)

Usable battery depth

Solar-system efficiency

How to use the result

Round the solar array up to an available panel combination and leave headroom for poor weather, shade and seasonal sun. Then verify controller voltage/current limits, wire ampacity, fusing, battery charge acceptance and inverter surge requirements before buying parts.

Continue with the RV solar sizing guide or compare complete RV solar kits.