Portable solar panels are small, plug-in panels that you can take anywhere with you. Unlike mounted units, portable panels can't power an entire home, but can be used to charge small electrical appliances, such as. Portable solar panels are typically used to power small devicesduring extended outdoor journeys or activities, such as on camping trips, boat trips, or hikes. Larger portable solar pa. The size of your portable solar panel will depend on its wattage – generally, the bigger the wattage, the larger the panel will be. The overall weight will also vary by make and model. Advantages of portable solar panelsPortable solar panels are less expensive than standard mounted solar panels. Most portable solar panels cost under £500, whereas fixed sol. Portable solar panels cost between £100 and £500, but this will depend on their wattage, efficiency, and the make and model. Technically, you can buy portable solar panels for a.