The mini PV system for the balcony has been ordered, the box opened. And now? The big question is: "How do I securely fasten the balcony power plant so it doesn’t take off at the first gust of wind?" Don’t worry, with these tips you’ll navigate the installation jungle safely step by step.
In urban areas, living space is becoming increasingly scarce while rents continue to rise. According to a study by the ifo Institute (2025), asking rents for new leases in the seven largest German cities have increased by around 75 percent since 2013. This makes the efficient use of every available square meter increasingly important.
A key principle of optimizing living space is therefore: Everything that can be mounted on the wall should not occupy valuable floor space. Wall solutions such as wall shelves, hanging cabinets, or TV mounts create additional storage without taking up valuable floor area. At the same time, the floor remains visible all the way to the corners. This makes rooms appear larger and tidier. This effect can be crucial, especially in small apartments.
In the past, large, bulky wall units dominated many living rooms. Today, slim wall shelves and flat-screen TVs create a modern, open spatial feel. They provide additional storage without reducing floor space, thus contributing to more efficient use of space.

Depending on the building material, different fastening solutions are required to, for example, also mount heavier wall cabinets and bookshelves. It should not be forgotten that higher tensile forces can also occur:
If you are not quite sure which anchor is the right one, you should seek professional advice or use digital support – for example, the fastening advisor in the fischer DIY App.
Practical: The AI building material recognition in the fischer DIY App provides hints about the anchoring base based on tapping sounds and directly recommends the appropriate fastening solution – whether concrete, aerated concrete, brick, or drywall. To be absolutely sure, a test drill is recommended.


More living space is not created solely by additional square meters, but through intelligent use of existing areas. Those who plan rooms structurally, consistently include wall surfaces, and use suitable fastening solutions can make even small apartments significantly more spacious and functional.
