Solar System

Its is use to convert the sunlight  into electricity. The number of panels you’ll need will depend on your energy consumption. For small appliances and lighting, a 100-watt solar panel might be sufficient. But for larger appliances like a refrigerator, you’ll need a larger system, perhaps in the range of 200-400 watts.
Solar charge controller: This device regulates the voltage and current coming from the solar panels to protect your battery from being overcharged.
Deep cycle battery: This is a type of battery that is designed for repeated charging and discharging. The size of the battery will depend on your energy needs and how long you plan to be off-grid.
Inverter (optional): If you want to run AC appliances in your caravan, you’ll need an inverter to convert the DC power from your battery to AC power.

Here are some additional things to consider when choosing a solar system for your caravan:
Your energy consumption: The first step is to figure out how much power you typically use in a day. This will help you determine the size of the solar panel system you’ll need.
The amount of sunlight you’ll be getting: Solar panels generate more electricity in full sun. If you plan on doing a lot of caravanning in shady areas, you’ll need a larger solar panel system.
Your budget: Solar systems can range in price from a few hundred dollars to a several thousand dollars.If you’re not sure how to size a solar system for your caravan, there are a number of online calculators that can help you. You can also consult with a solar installer.