This historical German report retains the manufacturer’s 2025 package and service prices; they are not current quotations or individual installation offers.
So-called photovoltaic balcony systems can also be used in other locations. The manufacturer from Sand am Main now also offers plug-in mini photovoltaic roof systems for carports as well as flat and trapezoidal sheet metal roofs.
Installing a photovoltaic system yourself without much effort is possible with plug-in solar devices.People have mostly installed them on balconies so far, which is why the term „photovoltaic balcony system“ has become widely used.
The manufacturer Ilzhöfer from Sand am Main now also offers these plug-in mini photovoltaic systems for unused flat roofs, carports, and trapezoidal sheet metal roofs. It also supplies the two solar modules along with the appropriate mounting system.
The manufacturer believes that flat roofs are particularly well-suited for its solution. It offers aerodynamic mounting systems such as the „WAVE“ system.
This design lets users install the mini photovoltaic systems without drilling or penetrating the roof. Ilzhöfer has ballasted and wind tunnel-tested the system, specifically designing it for easy self-assembly.
For trapezoidal sheet metal roofs, however, the manufacturer offers its screwable „HOOK“ system. This allows the photovoltaic systems to be securely attached directly to the sheet metal. According to the manufacturer, the system is also adaptable to different roof geometries.
Manufacturer package prices as reported in 2025: The price for the mini photovoltaic systems with two solar modules, an 800-watt Hoymiles inverter, the „HOOK“ mounting system, and connecting cables is €395. The package price with four 450-watt bifacial glass-glass solar modules is €795. For carports, the solution with four solar modules costs €995.
Have the electrical suitability and proposed connection assessed by qualified professionals for the actual property. Do not improvise wiring. The German announcement does not establish permission for a specific Austrian installation.
Those who don’t feel confident connecting the system themselves can hire an installation service. The costs vary, but often start at less than €400, according to Ilzhöfer. The supplied 2025 report quoted delivery and installation service as „from €385“ on the manufacturer’s website.
For its historical marketing calculation, the manufacturer described the following assumptions. Assuming a purchase price of €400 to €1,000 and an electricity price of 35 to 40 cents per kilowatt hour, the manufacturer estimated a payback of two to three years. That is an attributed historical estimate, not a guaranteed outcome for another household.
The 2025 estimate assumed that the system produces 600 to 750 kilowatt hours of solar power annually, which homeowners can primarily use within their own households.
The dated mounting announcement describes WAVE and HOOK. Ilzhöfer announcement.
