SOLARParts 100W-400W rigid solar panels are typical for RVs, and an RV consumes less than 200 kWh. Thus, if an RV needs 180kWh/month, it requires six 200W or three 400W solar panels or other power output combo that meet the energy demand. When on cloudy days, we suggest going for a higher capacity.

100W SOLARParts rigid solar panel can fully charge your 12V 100Ah battery in around 12 hours. (100Ah*12V/100W=12). And a 200W solar panel can charge your 12V batteries in around 7 hours. While a 400W solar panel charges your solar in 3 hours.

400W solar panel can charge your 12V 20Ah battery in just around 36 minutes.

The panels will produce electricity but it will be very limited -- depending on how much light can get through the cloud layers. Homeowners with solar power will still be able to use traditional electricity from their local provider just as they did before the solar equipment was installed.

The amount of electricity produced will vary with the seasons as the angle of the sun changes from summer to winter. In the winter, the sun angle is low in the southern sky so the amount of sunlight reaching the panels is less. In the summer, the sun angle is high so the panels produce more electricity.