Photovoltaic systems (PV systems) are not only reliable suppliers of electricity, they also have to withstand extreme weather conditions, especially in snowy regions. The weight of snow can lead to high snow loads, which put a lot of strain on modules and roof structures. An inadequate snow load calculation can lead to damage and considerable loss of performance. At AEROCOMPACT, we offer customised solutions with innovative mounting systems that make PV systems safe and efficient even in the harshest winter conditions.
Whether flat roofs, pitched roofs or special roof constructions – we at AEROCOMPACT supply customised systems that defy snow and ice while guaranteeing maximum stability and durability.
What does snow load mean – and why is it so important?
The snow load describes the weight that snow exerts on a PV system. We calculate it in kilonewtons per square metre (kN/m²), as this unit takes into account not only the weight, but also the actual pressure including gravity.
These forces can quickly take on immense proportions, especially in snowy regions. Without precise planning, there is a risk of deformation, damage to modules and substructures or even a complete collapse of the system. It is therefore crucial to precisely calculate the snow load for the respective location as early as the planning phase.
An accurate snow load calculation is essential to ensure the safety and functionality of the photovoltaic system. Our innovative AEROTOOL planning software takes into account local snow load zones, standards and site conditions. This ensures right from the planning phase that your PV system can withstand even the most adverse weather conditions.
Precise planning with the AEROTOOL
Planning is the key to a snow-load-resistant PV system. With AEROTOOL, we offer powerful software that carries out precise snow load calculations. AEROTOOL automatically integrates local standards such as EN 1991-1-3 (snow load standard) in Europe or ASCE/SEI 7 in the USA. This ensures that all specific site data – from climatic conditions to roof pitch and size – is included in the planning.
Factors that the AEROTOOL takes into account include
- Snow load zones: Depending on the region, the snow load varies considerably. AEROTOOL calculates these values precisely.
- Roof pitch and roof size: This data influences the snow distribution and the choice of substructure.
- Norms and standards: International and local building regulations are automatically integrated.
AEROTOOL ensures customised planning that combines safety and efficiency – perfectly tailored to the customer's needs.
Insight into planning with the AEROTOOL
A stable base – construction and choice of materials
High-quality substructures are essential for the long-term stability and quality of a PV system. Our mounting systems are made of corrosion-resistant materials that can withstand extreme snow loads and strong temperature fluctuations. These materials are tested in our own and external laboratories and certified according to internationally recognised standards.
Advantages of AEROCOMPACT mounting systems:
- Optimum load distribution: point loads are avoided, reducing deformation of modules and substructures.
- Durable materials: Corrosion-resistant and weatherproof materials ensure a long service life.
- Guaranteed safety: At AEROCOMPACT, we offer a 25-year guarantee on our mounting systems if they are installed and planned correctly.
Our substructures for high snow loads
At AEROCOMPACT, we offer a wide range of mounting systems that have been specially developed for high snow loads. Whether flat roofs, pitched roofs or special roof constructions – our systems guarantee maximum stability and durability, even under extreme weather conditions. Here are our solutions in detail:
For flat roofs:
- COMPACTFLAT SN2 – stability and flexibility in one system
COMPACTFLAT SN2 is the ideal mounting system for flat roofs and can withstand pressure loads of up to 5.4 kN/m². With support for module sizes up to 2,500 x 1,310 mm, this system is also suitable for large solar modules. Thanks to the choice between long-side and short-side clamping, the load can be distributed evenly, which prevents deformation and damage. The long-side clamping in particular offers an optimum variant for snowy regions.
- COMPACTFLAT SN2 Q PLUS – Cost-efficient and stable
The COMPACTFLAT SN2 Q PLUS combines stability with cost efficiency. With the same load limits as the SN2, this system reduces the amount of material used when implemented with long-side clamping thanks to an optimised design, without sacrificing stability. Ideal for projects that require an economical solution without compromising on safety.
- COMPACTFLAT S with alpine stabilisers – up to extreme conditions
The COMPACTFLAT S with alpine supports was specially developed for extreme conditions and can bear snow loads of up to 4.4 kN/m². This system is particularly suitable for regions with heavy snowfall. The simple bracket system with few components enables quick and uncomplicated installation.
Here you can see our tried-and-tested COMPACTFLAT S flat roof system in action.
For pitched roofs:
- COMPACTPITCH XM-F roof hook – maximum load-bearing capacity for steep roofs
The COMPACTPITCH XM-F roof hook is designed for pitched roofs and can withstand pressure loads of up to 6.0 kN/m². The direct force transmission into the rafters ensures maximum stability, even in heavy snowfall. Pre-assembled modules save installers up to 40 % installation time, making the system particularly economical.
- COMPACTPITCH XT-R in combination with metal replacement tile XM-B – robust and efficient
The COMPACTPITCH XT-R system in combination with the XM-B metal replacement tile impresses with its high load-bearing capacity. It reduces the risk of breakage that often occurs with conventional roof tiles. This solution combines safety with durability on pitched roofs.
Here you can see the structure of the particularly strong roof hook construction of the COMPACTPITCH XM-F.
For sandwich sheet roofs:
- COMPACTMETAL TR 74 – Innovative and stable
The COMPACTMETAL TR 74 is the perfect solution for sandwich panel roofs. It is recommended by renowned sandwich panel manufacturers and impresses with its patented long rail design. This ensures maximum mechanical stability and load-bearing capacity.
For trapezoidal, slate and corrugated fibre cement roofs:
- COMPACTPITCH XWS hanger bolt – For maximum flexibility
The COMPACTPITCH XWS hanger bolt was specially developed for trapezoidal, slate and corrugated fibre cement roofs. Mounted in a cross bond, it can bear compressive loads of up to 3.6 kN/m². The system enables optimum load distribution and guarantees stable and durable fastening of the PV modules.
Other important aspects for snow load-resistant PV systems
In addition to stable substructures, the PV modules themselves must also be suitable for high snow loads. A stable module frame is crucial to minimise pressure loads caused by ice or snow. We also recommend regular maintenance by specialists in order to recognise and rectify damage at an early stage. A well-planned and well-maintained PV system remains reliable and powerful even in snowy regions.
Conclusion – Safe PV systems with AEROCOMPACT
With our innovative mounting systems and planning in AEROTOOL, you can operate your PV system safely and efficiently – even in the snowiest regions. Our customised solutions offer maximum stability, durability and even load distribution. Rely on AEROCOMPACT and benefit from worry-free solar energy – all year round. Your PV system remains reliable and efficient even with high snow loads.
FAQ:
What does snow load mean for photovoltaic systems and why is it so important?
Snow load refers to the weight that snow exerts on a PV system. In snowy regions, an incorrect snow load calculation can lead to damage to PV modules and substructures. Precise planning with AEROTOOL ensures that the system corresponds to the snow load zones and site conditions
Why is AEROCOMPACT the best choice for planning my PV system?
With AEROTOOL, AEROCOMPACT offers software that is customised to site data and local standards such as EN 1991-1-3. With this tool coupled with the expertise of its employees, you get a customised solution that ensures the safety and efficiency of your PV system.
Which mounting systems are suitable for high snow loads?
AEROCOMPACT offers mounting systems specially developed for high snow loads. Examples are
- COMPACTFLAT SN2: For flat roofs, up to 5.4 kN/m² pressure load.
- COMPACTPITCH XM-F: For pitched roofs, up to 6.0 kN/m² pressure load.
What materials does AEROCOMPACT use?
Our mounting systems are made of high-quality, corrosion-resistant materials that can withstand extreme weather conditions such as snow and strong temperature fluctuations.
Why should I choose AEROCOMPACT solutions?
AEROCOMPACT offers you:
- Optimum load distribution for PV systems.
- Maximum stability and durability.
- A 25-year guarantee with correct installation and planning.