Netto, Lidl and from June also at Aldi will sell solar power plant for the balcony. Solar panel generates electricity from sunlight, which an inverter converts into "household electricity" In the simplest case, you insert a plug into an existing socket.
A plug-in solar device is suitable for apartments with a small terrace or roof area above the apartment or in front of the window. But even if the photovoltaic modules with dimensions of 1.77 x 1.10 meters (net x 0.07 x 1,07) or 1.7 x 0,8.0 meters (Aldi x 499 euros) occupy relatively small areas.