Solar panels
Solar panels make electricity from sunlight and earn their keep at the cabin, in a camper, in the garden and when topping up a battery. Here you will find rigid monocrystalline and polycrystalline panels, folding and portable models for camping, and smaller panels for garden lighting and pumps. Choose according to output in watts, system voltage and the mounting method.
Solar panels
Electricity from sunlight is not limited to large rooftop arrays — it works at a cabin with no connection, in a camper, on a boat, or simply for topping up a car battery over winter. Solar panels differ in output, in cell technology, and in how well they are built for carrying around and for the weather.
Monocrystalline panels yield more per unit of area and cope better with weak light, so they suit places where space is tight. Polycrystalline ones tend to be cheaper and are enough anywhere area is not a concern. Folding and portable panels in a fabric case form a group of their own: they fit in a backpack or behind a seat and serve for camping and for charging power banks and portable power stations.
A panel on its own powers nothing. An off-grid setup also needs a charge controller — the simpler PWM or the more efficient MPPT, which draws more energy out of the panel — plus a battery and, where relevant, an inverter to 230 V. So keep an eye on system voltage (most often 12 or 24 V), on the connector type, and on whether the controller is included in the box.
When choosing, bear in mind that the stated output applies under ideal conditions, so the real yield depends on the season, orientation, tilt and shading. Panels need a firm mounting that will hold in wind, and a clean surface. Leave the electrical work — above all any connection to the house wiring or to the grid — to a qualified electrician, and follow the manufacturer's instructions and the rules that apply in your country.