WIf you have installed a mini solar system on your balcony, you can recoup the costs after just three years under ideal conditions. “Balcony power plants have become increasingly cheaper in recent years. That’s why they pay off faster and faster,” said the Heidelberg comparison portal Verivox on Thursday. Since the beginning of this year, VAT for the systems has also been eliminated.
According to Verivox, a 600-watt system can supply up to 570 kilowatt hours of electricity per year. If you use all of this electricity yourself, this results in savings of almost 230 euros at a kilowatt hour price of just under 40 cents, as the comparison portal calculates. A system costing between 700 and 900 euros pays for itself after three to four years. If the mini power plant runs for 20 years, around 4500 euros in electricity costs could be saved.
Sun exposure and consumption habits are decisive: solar power accumulates during the day and must then be consumed. A lot of sun, for example a south-facing balcony, also promises the best yield of solar power. The modules should be attached at a slight angle for this purpose.
“However, the systems are often worthwhile even if the conditions are not ideal,” explained Verivox. It will then take a little longer for them to pay off. According to Verivox, the balcony power plants are particularly popular in northern Germany, where the systems were recently promoted – they are still not very common in large cities.
A total of around 220,000 mini solar systems are registered with the Federal Network Agency, 148,000 of which were registered this year, according to Verivox. There is also an unknown number of unregistered devices.
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