From your postcode we identify your real climate zone — snow and wind — using the national annex of your country (BS EN in the UK, NF EN in France, DIN EN in Germany, NTC in Italy, CTE in Spain). The structure is sized for your specific site, not a national average. Drawings, parts list and installation manual delivered in English.
Engineering coverage across five European markets
Site-specific calculation. Each country applies its own national annex. The project load is checked from the exact site, altitude and local requirements.
Geographic boundaries: Eurostat GISCO 2024.
A poorly sized PV structure faces three risks: collapse under snow load, lift-off in storms, and slow fatigue deformation. All three can invalidate your insurance. The engineering team is what makes the difference between a long-life installation and a pile of profiles.
Characteristic snow load sk by altitude and zone, local accumulation, exposure factor.
Reference velocity vb,0, site factors, orography, peak pressure per roof zone.
Galvanised steel section resistance, deflection checks, stability, connections.
Aluminium 6063-T5 / 6082-T6, alu-specific verifications, creep, PV panel fatigue.
From the site layout to the connections, your study links the calculations, drawings and parts to order. A dossier to understand your project, price the materials and prepare for assembly.
Axonometric view, side elevation, slope and main dimensions: complementary views show where every element belongs.
Axes, centre distances and support references provide a common basis for the engineering team and foundation contractor.
An exploded view, shared references and quantities give every group of parts its place in the structure.
Illustrative example of a 6 × 4 m ground-mount structure, not a construction drawing. Your dossier is developed for your modules, your site and your constraints.
Site data, wind and snow actions, load combinations, and checks on sections and connections to the applicable standards.
Layout, plan views, elevations and relevant sections. Overall dimensions, centre distances, slope and shared references to the bill of materials.
Support positions and the ground or roof connection principle. Design depends on calculated reactions and supplied soil or support data; any additional checks needed are identified.
References, quantities and dimensions of the components defined by the study. These underpin the supply quotation and later help you check the delivery.
Assembly order, part references, fixing requirements and checkpoints. One correction round within the original study scope is included.
The study comes before the hardware quotation and produces usable plans for your site, whether or not you later buy the structure from Sunrak.
Compact, Project or Pro according to installed capacity. You commission a standalone design service for your site and retain your project drawings.
Site, dimensions, modules, ground or roof, photographs and available drawings. Calculations start after the completeness check.
Wind, snow, exposure, support, loads and connections are checked against the site data and applicable standards.
After payment, the project-specific drawings are yours. Sunrak then prices the exact hardware; the study fee is creditable under the stated conditions.
Engineering comes before the hardware quotation. You then remain free to choose your supplier.
Three project scales. The same technical foundation in every option.
Residential Residential carport, small roof or simple ground-mount structure.
€249 Including 20% VAT in France; applicable tax for other countries is calculated at checkout.
Multiple bays Standard commercial project, several bays or site constraints.
Large installation Canopy, car park or complex structure requiring extended engineering.
Capacity guides your choice. For unusual projects, complex small structures or over 100 kWp, contact us before paying.
You are buying a structural study, not a complete photovoltaic installation.
You are commissioning a standalone design service. Once fully paid, the project-specific drawings are yours, even if you later choose another supplier.
See conditionsThen order your structure from Sunrak: 100% of the net study fee can be credited against the hardware.
Within 90 days · Same site and scope · Net hardware value ≥ 5 × net study fee
100% of the net study fee is credited against your structure order when placed within 90 days for the same site and scope, provided the net hardware value is at least five times the study fee. This is a commercial credit and cannot be paid out in cash.
See conditionsChoose the package for your planned capacity, then submit the project data after secure payment.