Spaziou · Solar Energy Guide
Solar panels for campers: start with your consumption.
Choosing a solar system requires relating what you consume, the available space and the equipment you already have. This page helps you decide the type of assembly and preliminary checks. When you are clear about those requirements, move on to the product comparison.
Editorial review: 13 September 2026. Informative selection guide; it does not replace system design or each product's installation instructions.
Before choosing equipment: test the camper electrical planner to relate consumption, battery, solar and charging when driving and consult your diagram and list of materials.
Where are you starting from?
First, daily energy; then solar power
The power of a device is expressed in watts (W); The energy you use over a period of time is expressed in watt hours (Wh). As an approximation, multiply power by hours of use: a 20 W device used for three hours consumes 60 Wh. Add up the devices and distinguish those that work continuously from those that turn on in cycles.
In a refrigerator, the power on the label is not enough to know the daily consumption. Temperature, adjustment, ventilation and opening frequency influence. Use a consumption figure from the manufacturer for comparable conditions or a measurement from your equipment when available.
Panel power is rated under test conditions. It does not tell you daily energy yield: location, season, orientation, shade, temperature and system losses all matter. We therefore give no universal size for all campervans and do not promise autonomy from a 200 W panel.
Your next step
Note consumption, travel season and days between charges. The consumption calculator helps structure your estimate; then check expected generation and storage with an installer or the system documentation.
Which format fits your way of traveling
| Format | When does it make sense | What you should check |
|---|---|---|
| Fixed rigid | You want power generation without setting up the panel at every stop. | Usable space, shading from accessories and approved fastening method. |
| Folding portable panel | You can position it during your stay and pack it away afterwards. | Weight, folded dimensions, surveillance and conditions of outdoor use. |
| Flexible | The mounting bracket requires an explicitly compatible solution. | Radius of curvature, dissipation, support and manufacturer's installation method. |
A portable panel can be repositioned but needs a safe setup area and storage space. A fixed panel simplifies stops, while output depends on vehicle orientation and shade. Flexible material does not mean it can be bonded to any roof.
The solar panel is one part of the system
Solar input and regulator
Identify whether you will use a standalone regulator or the input of a portable station. Contrast the voltage, current and power limits with the panel data and the intended configuration. Matching a 12 V connector or commercial label does not prove electrical compatibility.
Battery and charging
Charging equipment must support the battery chemistry and operating conditions. Check instructions and limits. A solar panel does not replace a battery when you need energy while no electricity is being generated.
Roof and shade
Measure available roof space, including rooflights, aerials, access routes and accessories. The installer must confirm mounting hardware and methods suited to the vehicle. Do not choose solely from total roof area without checking each component's position.
Connections and protections
Wiring, protection and cable routes through the bodywork require a suitable design. There is no universal rule for sizing fuses and cables: give the installer the equipment references and planned cable route.
Product comparison
Want to choose a specific solar panel?
This guide focuses on sizing and understanding the solar system. To compare specific models, formats, powers, measurements and limits, we have separated the commercial selection into a specific comparison.
What to check before buying
- Estimated daily consumption and alternative recharge sources.
- Dimensions, weight and space available for transportation or assembly.
- Panel electrical specifications and solar input limits.
- Compatibility of the charging system with the battery.
- Package contents, mounting brackets and accessories sold separately.
- Manual, warranty and conditions of use for the exact reference.
Do not connect panels in series or parallel just because they have the same power. The configuration changes the electrical values received by the system and must be specifically checked. Also do not confuse a kit with a regulator with a panel intended for a station that already incorporates its own charge management.
View the 12 selected solar panels ↓Frequently asked questions
Is a 200 W solar panel enough?
It depends on daily consumption, actual generation, storage and other charging sources. The nominal rating alone cannot guarantee autonomy.
Can I use any panel with a portable station?
No. The electrical and connection requirements of the solar input must match. Check exact references and authorized accessories.
What is the difference between this guide and the comparison one?
This guide organizes the choice of the system. The comparison brings together product references to compare them once your requirements have been defined.
Can I expand the system later?
Only if the components and design support expansion. Check this option before purchasing to find out the limits of the regulator, solar input and storage.
Complete your energy system
Portable and fixed solar installations are treated differently in Spain
Spain's Vehicle Modification Manual explicitly includes fixed solar panels under CR 8.52. If installation does not affect the structure, this Spanish procedure allows the modification without a technical project or final works certificate. A portable panel deployed and packed away without being incorporated into the vehicle is a different case.