Approval for overhead mounting of solar carports with transparent double-glass solar modules – Image: Xpert.Digital / Marina Lohrbach|Shutterstock.com
The demand for transparent solar modules for solar carports is constantly growing. They are real eye-catchers. Individual design and eco-friendly solutions are no longer mutually exclusive. With transparent solar modules, the solar cells themselves are still opaque. The transparency, or semi-transparency, is created by the light-permeable space between the individual solar cells. This is made possible by the double glazing of the solar cells within the module. Interesting design variations can be produced using polycrystalline (medium blue) and monocrystalline (dark blue/black) solar cells. The color of the glass enclosing the solar cells can also be customized. Everything from a reddish tint to green is possible. However, all of this also affects the energy yield and performance of the solar modules. It should also be noted that transparent solar modules generally have a lower power output compared to standard solar modules.
So far, only two manufacturers have overhead approval for glass-glass solar modules.
Transparent double-glazed / glass-glass solar modules approved for overhead installations – Image: Xpert.Digital
The real problem is that not all modules have the necessary building code approval. In fact, almost none do. Currently, we know of two solar module manufacturers who have since obtained approval for overhead installation. The modules' penetration resistance (invasiveness test) and residual load-bearing capacity were tested. The latter must be able to withstand the loads that occur (e.g., snow). Even in the event of damage, a minimum load-bearing capacity must be guaranteed. In case of glass breakage, the solar modules must be secured against falling fragments.
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Why glass-glass solar panels?
The most impressive advantage of glass is its durability and virtually indestructible properties against weathering.
With a general building authority approval (abZ) from the DIBt, interesting solar carport overhead installations and terrace overhead glazing, as well as solar facades and balcony power plants with transparent double-glazed solar modules, can be installed. This approval permits the unrestricted use of transparent solar modules.
Everything is possible, from large-scale parking lot canopies and roofs for industrial halls to roofs for sports facilities and sports arenas.
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Example of a solar carport with transparent double-glazed solar modules
📣 Transparent solar module solutions for industry, retail and municipalities
Everything from a single source, specially designed for solar solutions for large parking areas. You refinance or counterfinance into the future with your own electricity generation.
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The nature of a solar power system
A solar power system consists of solar modules mounted on a support structure (mounting system/substructure for solar modules). The solar power system produces direct current (DC), which is converted into alternating current (AC) via inverters and fed into the electrical grid and/or the home's electrical network.
In short, a solar power system offers significant financial advantages. Even though the initial costs are very high, the savings on electricity bills from using self-generated power will be largely offset in the future by the increased consumption of numerous electronic devices and the anticipated rise in e-mobility. Furthermore, increasingly sophisticated energy storage systems allow the electricity to be stored for later use, potentially enabling it to be sold to third parties as an additional source of income.
The foundation and essential element of every solar power system is the supporting structure. This includes the substructures for various rooftop systems and roof types such as flat or pitched roofs, as well as the mounting systems for ground-mounted and open-field systems, also known as solar parks. And let's not forget solar carport systems!
Company parking lots, parking garages, supermarkets, shopping centers and all larger ones such as Park & Ride parking lots are affected by where the solar obligation will apply in the future for the respective federal state.
From individual carports to row carports to large open parking facilities
Solar carports are an important application for transparent glass-glass/double-glazed solar modules. While single and double carports with photovoltaics can still be considered a standard solution (although structural differences in the main and ancillary buildings sometimes necessitate custom solutions), individual solutions are always required for row carports. This starts with the different access routes, varying room layouts, and differences in the individual driveways.
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Xpert.Solar offers consulting services for overhead mounting of transparent glass-glass / double-glass solar modules, e.g., for solar carports or large open parking areas.
Konrad Wolfenstein
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Xpert.Digital – Konrad Wolfenstein
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