Lattice Towers vs. Tubular Steel Towers: Which Is Better for Onshore?

Lattice towers use a crisscross steel framework of angle sections, delivering excellent load‑bearing capacity at lower steel weight, easier transport, and cost‑effectiveness—especially ideal for high‑voltage, long‑span, or remote installations. In contrast, tubular steel towers are sleek hollow cylindrical or polygonal monopoles: they offer superior aesthetics, compact footprint, faster assembly, and lower maintenance demands—suited for urban or limited‑space telecom applications.

Structural Design and Aesthetics

Lattice Towers

Lattice towers are composed of a network of steel supports arranged in a crisscross pattern, resembling a series of triangles. This design is not only structurally robust but also relatively lightweight. The open framework allows wind to pass through, reducing wind resistance and making them highly stable in high-wind conditions. However, one of the drawbacks of lattice towers is their visual impact. They tend to be less aesthetically pleasing to communities, often perceived as industrial and obtrusive.

Tubular Steel Towers

Tubular steel towers, on the other hand, consist of a smooth, cylindrical shape made from rolled steel sections. Visually, they are more streamlined and considered less intrusive, often integrating better with the landscape. Their simple design also offers advantages in terms of installation and maintenance. Despite these benefits, the solid structure is subject to higher wind pressure, which can be a concern in extremely windy areas.

Cost Considerations

Lattice Towers

The construction of lattice towers generally involves lower material costs due to their efficient use of steel. Their lightweight nature translates into reduced transportation costs and requires smaller cranes for installation. Moreover, lattice towers can be erected in sections, which can be advantageous in remote or hard-to-access areas.

Tubular Steel Towers

Tubular steel towers, while aesthetically superior, often come with higher production and transportation costs. The large steel sections are heavy, necessitating specialized equipment for transport and assembly. However, their quicker installation times and lower ongoing maintenance costs can sometimes offset the initial investment.

Durability and Maintenance

Lattice Towers

Lattice towers are known for their durability and ability to withstand harsh environmental conditions. The open structure allows for easy inspection and maintenance, as technicians can climb within the framework to access different parts of the tower. However, the increased surface area can be susceptible to corrosion over time, necessitating regular inspections.

Tubular Steel Towers

Tubular steel towers generally provide excellent protection against the elements due to their smooth, enclosed design. This reduces the risk of corrosion and ice accumulation. However, maintenance and inspections can be more challenging, often requiring specialized equipment to access the tower's exterior. Their design also necessitates a more robust foundation to ensure stability, particularly in soft soil conditions.

Environmental Impact

Lattice Towers

The manufacturing process of lattice towers uses less steel, reducing the overall carbon footprint associated with their production. Furthermore, their open structure minimizes the impact on birdlife compared to solid tower forms. However, the visual and noise impact of lattice towers can be a concern for local communities and wildlife.

Tubular Steel Towers

Tubular steel towers have a more significant environmental footprint during manufacturing due to the extensive use of steel. However, their streamlined design and reduced noise make them more appealing in environmentally sensitive areas. Additionally, the potential for repurposing and recycling tubular steel outweighs the initial environmental costs, making them more sustainable in the long run.

Conclusion

The choice between lattice towers and tubular steel towers for onshore applications is not clear-cut and depends heavily on the specific requirements of the wind farm project. Lattice towers offer cost advantages and ease of maintenance, making them suitable for remote areas and regions with significant wind exposure. In contrast, tubular steel towers provide aesthetic benefits and long-term sustainability, ideal for projects where community integration and environmental impact are paramount. Ultimately, the decision should be guided by the particular geographical, economic, and environmental factors surrounding each project.