One of the most critical decisions in the planning phase of solar power plants (PV systems) is the design of the supporting structure that will carry the panels. Considering the wind, snow, and seismic loads that a project will face over a lifespan exceeding 25 years, it becomes clear that the structure is not merely a rack holding the panels, but the backbone and safeguard of the entire investment. At this point, the key to success lies in selecting solar mounting systems that fully adapt to the topographical and geological characteristics of the site, supported by strong engineering expertise.
Each terrain presents a unique engineering challenge. While rocky ground offers high strength, it can create installation difficulties; sandy or filled soils, on the other hand, may have low resistance to pull-out forces. For this reason, pre-installation geotechnical studies and on-site pull-out tests are critical for selecting the appropriate solar mounting systems. These tests determine the soil's load-bearing capacity and define key parameters such as profile length and foundation type.
Engineering solutions are not limited to soil conditions. Terrain slope also plays a decisive role in installation strategy. On highly sloped land, instead of standard structures, terrain-following systems should be preferred. These systems prevent panel shading, maximize energy yield, and reduce excavation needs—ultimately lowering both environmental impact and project costs.
The structure of the terrain directly dictates the foundation strategy for solar mounting systems. Three commonly used methods provide flexibility in engineering design:
Driven Pile Systems: Typically used in agricultural land or medium-density soils. Steel profiles are directly driven into the ground using hydraulic pile-driving machines. Due to their fast installation and no need for concrete, they are among the most cost-effective solar mounting systems.
Ground Screw Solutions: Preferred in rocky, very hard, or clay-heavy soils where pile driving is not feasible. These screw-like foundations are installed by rotating into the ground, providing high pull-out resistance. They offer exceptional stability, especially on steep slopes and variable soil conditions.
Concrete-Based Systems: Used where neither driving nor screwing is suitable, such as former mining areas, filled land, or protected ground zones. Installed on precast blocks or cast-in-place concrete foundations, these systems ensure optimal structural balance through their weight distribution.
As a global force in infrastructure and steel solutions, ÇEPAŞ transfers Gonvarri Industries’ worldwide solar experience of over 10 GW into local projects. The developed solar mounting systems not only carry structural loads but also provide maximum protection against environmental factors such as corrosion.
One of the most critical processes determining the lifespan of steel structures exposed to soil moisture is hot-dip galvanizing. With this coating applied in its own facilities, Çepaş Gonvarri Industries offers corrosion protection guarantees of up to 30 years for its solar mounting systems. This durability significantly reduces maintenance costs and shortens the return on investment (ROI) period.
Effective solar mounting systems must be designed not only to support vertical loads but also to withstand aerodynamic forces such as wind-induced uplift (lift force). The engineering team at Çepaş Gonvarri Industries performs project-specific aerodynamic analyses using regional wind data for each site. Based on these analyses, parameters such as purlin spacing, rail thickness, and connection torque values are optimized. This precise approach prevents excessive material use—reducing costs—while ensuring system stability under extreme weather conditions.
Yes. Especially on uneven terrain, properly designed solar mounting systems prevent panel shading and ensure optimal angles, directly improving energy efficiency.
High-strength structural steels such as S235, S275, and S355 are typically used. In addition to material quality, the thickness and quality of galvanizing are crucial for corrosion protection.
Insufficient engineering can lead to panel detachment during storms, structural collapse under heavy snow loads, or panel damage due to ground settlement.
The modular solar mounting systems developed by Çepaş Gonvarri Industries are designed with fully bolted connections, eliminating the need for on-site welding and reducing installation time by up to 30% compared to conventional methods.
For detailed technical information on terrain-specific engineering approaches and the most durable solar mounting systems for your project, you can contact the experts at ÇEPAŞ Gonvarri Industries.
Çepaş, promises a world-class production to its business partners with its service quality as well as the product quality. It supports this quality understanding it stood by with the quality laboratory it comprised.
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