So far, it was mainly the owner reserved to have a solar system installed on the roof. With modern, highly efficient photovoltaic modules, tenants can now easily generate their own electricity on the balcony or terrace – and save money.
Produce your own electricity on the balcony with a mini-solar system
The private energy transition is mainly taking place on the European and American roofs: in 2013, 150 billion kilowatt hours of electricity were produced using solar energy. While it was previously reserved for owners to install a photovoltaic system firmly on the rooftop, tenants can now set up their own mini-solar power plant on the balcony or terrace and generate electricity from solar energy.
That’s what the mini solar system can do: The rectangular photovoltaic modules, which measure around 80 by 160 centimeters and weigh almost 20 kilograms, can be installed in any number and connected to a standard power outlet with a grounded plug. The energy generated is fed via an inverter in the household cycle, this controls the power supply. A 220-volt system gains around 180 kilowatt hours of electricity per year in 900 hours of sunshine.
The grid operator has a share in tariff
The costs vary depending on the performance and accessories. A system consisting of two solar modules each with a peak power of 120 watts, including assembly parts, cables and inverters, costs around 400 euros. In addition, there are costs for installation and approval. According to the manufacturer can save 90 euros electricity costs a year, therefore, the purchase should have amortized after six years at the latest.
However, these 90 euros are only theoretically noticeable on the electricity bill, would really be used 100 percent of the electricity generated itself. In fact, the self-consumption rate in Europe is 30 percent, the rest goes to the grid operator and we are remunerated under the Renewable Energy Sources Act with a feed-in tariff of less than nine cents.
That speaks against it: the security risk. Plug-in modules can not be compared to plugging in a household appliance into a power outlet: they can overburden the house’s circuit and provoke fires. The inverter can help by regulating the maximum influence. Nevertheless, it is recommended that the installation of such mini photovoltaic systems be carried out by experts, as there are still no uniform safety regulations, requirements and certifications for the technology. Depending on the size, a permit from the homeowner is also required – residents of old buildings can have problems here. So, the use of mini-solar modules in balcony or camping has proved its worth.
So you can always produce your own electricity at home
However, tenants can not only tap the sun, but also use wind and water as cost drivers for the electricity bill. However, such small power plants are much more expensive to purchase and install than the mini-solar system for the balcony.