Choosing the right ground-mounted solar structures is one of the most important decisions in developing a photovoltaic park. Although the modules often get the most attention, the structure will withstand wind, snow, and other environmental loads of the site for more than 30 years.
A poor choice can result in higher foundation costs, construction delays, increased maintenance, and even structural problems during the installation’s lifespan.
In this article we analyze the seven criteria that engineering firms, EPCs and developers should consider before selecting a structure for a large-scale solar plant.
Why is choosing the right structure so important?
The structure represents a relatively small part of the project’s CAPEX, but it influences important aspects such as:
- speed of installation
- steel consumption
- logistical ease
- structural behavior
- maintenance costs
- overall profitability of the park
Therefore, the decision shouldn’t be based solely on the price per MW. Here’s more information: Solar ground-mounted structures: fixed, driven, or ballasted
1. Adaptation to the terrain
No two locations are the same.
Before selecting a solution, it is advisable to analyze:
- slope of the terrain
- soil type
- load-bearing capacity
- presence of rock
- water table
- topographic irregularities
A well-designed structure should adapt to the terrain, minimizing earthworks.
The less leveling is needed, the lower the total cost of the project.
2. Optimization of steel consumption
Steel is one of the components with the greatest economic impact.
A good manufacturer develops optimized profiles using advanced structural calculations to achieve:
- lighter weight
- maximum resistance
- lower logistics cost
- easier assembly
Reducing the amount of steel used without compromising safety represents a significant saving in utility-scale projects.
3. Certified structural strength
Every structure must meet the requirements of:
- Eurocode
- Technical Code when applicable
- wind load regulations
- snow regulations
- seismic regulations according to location
In addition, it is recommended that the manufacturer provide:
- own calculations
- essays
- independent validations
- documentary traceability
This reduces risks during engineering and construction. Learn more: Wind zone according to CTE and Eurocode: how to calculate it and why it’s key in solar structures
4. Speed of installation
In large photovoltaic parks , each day of assembly has a direct impact on the cost of the project.
The best ground-mounted solar structures are distinguished by:
- few pieces
- simple joints
- fewer screws
- high prefabrication
- intuitive assembly
This allows for a considerable increase in the productivity of the installation team.
Pile drivers for photovoltaic plant structures – SOLAR FARM
5. Compatibility with different modules
The photovoltaic market is constantly evolving.
Manufacturers are launching increasingly larger modules with different frame thicknesses.
A good structure must be compatible with:
- bifacial modules
- large formats
- different thicknesses
- future generations of panels
This avoids dependence on a single module manufacturer.
6. Protection against corrosion
Durability depends largely on the anti-corrosion treatment.
Depending on the environment, the following can be used:
- Magnelis Steel
- Hot-dip galvanized steel
- Continuous galvanizing
- Aluminum
- combinations of materials
In coastal, industrial or high humidity areas, this criterion is especially important to guarantee a useful life of more than 30 years.
7. Manufacturer’s technical capacity
Not all companies provide the same level of engineering.
Beyond the supply of panel supports , it is worth considering:
- structural calculation capacity
- assistance during the project
- specific optimization for each plot
- technical documentation
- support during construction
- international experience
A manufacturer with its own engineering department can significantly optimize the overall cost of the park. Find out here: Which companies offer the best ground-mounted solar structures for large photovoltaic parks?
What mistakes should be avoided?
Some of the most common mistakes are:
- choose based solely on price
- not studying the terrain
- not checking the actual loads
- use standard solutions for any project
- not considering logistics
- Ignoring future maintenance
These errors usually generate costs much higher than the supposed initial savings.
The importance of a solution tailored to the project
Each solar installation has different conditions.
There is no universal structure valid for all projects.
A solution specifically designed for the terrain and environmental conditions achieves:
- reduce steel
- simplify assembly
- reduce earth movements
- improve durability
- reduce the levelized cost of energy (LCOE)
Therefore, collaboration between manufacturer, engineering and EPC is essential from the early stages of the project.
What does Alusín Solar offer?
At Alusín Solar we design and manufacture ground-mounted solar structures adapted to each photovoltaic project.
Our engineering team develops optimized solutions for large solar plants, taking into account terrain characteristics, weather conditions, and each client’s specific requirements. Which companies offer the best structures? Which companies offer the best structures?
The goal is to offer structures that reduce material consumption, facilitate installation, and maximize profitability throughout the park’s lifespan. Discover our: Services for EPC Photovoltaic Solar Energy Projects
Frequently Asked Questions
What is the most important criterion when choosing a solar ground structure?
There is no single criterion. It is advisable to jointly assess the adaptation to the terrain, structural resistance, total installed cost, speed of assembly, and the manufacturer’s technical support.
Are ground-mounted solar structures suitable for any terrain?
Not always. Depending on the type of soil, driven, bolted, or ballasted solutions may be required, in addition to different structural configurations.
Which material offers greater durability?
Magnelis steel is one of the most widely used options due to its high corrosion resistance and long service life, although the choice depends on the environment and the project design.
Is it better to choose the cheapest structure?
Not necessarily. A lower-priced structure may involve higher installation, maintenance, or foundation costs, increasing the overall project cost.
Why is the manufacturer’s engineering so important?
Because it allows the solution to be adapted to the actual site conditions, optimize materials and reduce risks during the construction and operation of the park.
Quick response
What are the main criteria for choosing solar ground structures?
The seven most important criteria are:
- Adaptation to the terrain.
- Optimization of steel consumption.
- Structural strength in accordance with regulations.
- Quick installation.
- Compatibility with different photovoltaic modules.
- Protection against corrosion.
- Manufacturer’s technical and engineering capabilities.
The best choice depends not only on price, but also on the total cost of the project, ease of installation, durability, and engineering support throughout the photovoltaic plant’s life cycle.
