Single-column or double-column ground-mounted support systems: Which is more suitable for your photovoltaic power station?

 In photovoltaic power station support system selection, single-column and double-column are the two most common ground-fixed support structures. They differ significantly in the number of piles, terrain adaptability, and construction efficiency. The selection must be based on a comprehensive assessment of project conditions.

 




Single-column support systems: Fewer piles, stronger terrain adaptability

 

Each unit of a single-column support system requires only a single row of foundations, with approximately half the number of piles required for a double-column system. This results in less pile construction, a shorter installation period, flexible pile placement, strong adaptability to east-west slopes, and higher ground clearance, facilitating agricultural machinery access in agro-photovoltaic hybrid scenarios. Taking PROFENCE.ENERGY's single-column support system as an example, it uses carbon steel with hot-dip galvanizing or zinc-aluminum-magnesium coating, has an adjustable tilt angle from 0° to 60°, and a maximum snow load of 4.0 KN/m², making it suitable for mountainous projects with significant terrain undulations. However, the steel consumption of the upper part of a single-column system is generally higher than that of a double-column system, and the single-point load-bearing capacity places higher demands on geological conditions. Double-column support: Distributes load evenly, suitable for flat sites

 

 

Double-column support systems employ a front-to-back double-row column design, distributing the load across multiple support points and offering higher structural redundancy. C-shaped steel double-column support systems are a typical option, using S350GD carbon steel and hot-dip galvanizing. All guide rails, beams, and columns are C-shaped steel, connected via specialized accessories. Pre-assembly of beams and columns before shipment significantly reduces on-site labor costs. It distributes load evenly on flat sites, and the amount of steel used in the upper structure is typically lower than with single-column systems. However, double-column systems require a higher degree of terrain flatness, and the increased number of piles leads to a longer construction period.

 

 

Selection Recommendations

 

Single-column systems are more suitable for projects in mountainous or sloping terrain with significant undulations, as well as for agro-solar hybrid scenarios that require agricultural planting. C-shaped steel double-column systems are more suitable for large-scale ground-mounted power stations on flat terrain. Selection should comprehensively consider multiple factors, including site topography, geological conditions, project timeline, and budget.

 

Comments

Post a Comment

Popular posts from this blog

Rooftop Walkway Systems: Why are they crucial for PV maintenance safety?

Image
  Rooftop PV systems require regular inspection and maintenance during operation. Maintenance personnel face the risk of falls when working on sloping metal roofs. Walking directly on the roof or modules can also damage roof panels and cause microcracks in the modules, affecting power generation efficiency. As the scale of rooftop PV projects continues to expand, walkway systems have become an important facility for ensuring maintenance safety. First, they improve maintenance safety. The non-slip surface design of the walkway system provides stable grip even in wet conditions, while also providing clearly defined passageways for technicians, effectively reducing the risks of working at heights.   Second, they protect PV modules and the roof. Directly stepping on the modules during construction and maintenance can cause microcracks and wear. The walkway system eliminates this hazard by guiding personnel along designated routes, protecting the modules from damage.   Third, ...
Read more

Intersolar Europe 2026 is about to open. What new trends in photovoltaic (PV) mounting systems are worth noting?

Image
  From June 23rd to 25th, 2026, Intersolar Europe will be held at the Munich New International Exhibition Center in Germany. This is one of the world's largest PV industry exhibitions, attracting thousands of exhibitors and tens of thousands of professional visitors annually.   After several years of rapid growth, the European PV market saw a slight decline in new installations to 65.1 GW in 2025, but it remains at a historically high level. Germany added approximately 16.2 GW, bringing its cumulative installed capacity to 116.8 GW; Spain surpassed 50 GW, and France also set a new record of 5.9 GW. While market growth is slowing, niche applications such as agricultural PV and PV carports are growing rapidly, with their demand share rising from 12% in 2024 to 22%. PV Mounting System Development Trends and Exhibition Visit Recommendations Agricultural-PV hybrid mounting systems   are being rapidly implemented. Elevated PV mounting systems raise the modules to 3 to 5 meters,...
Read more

What types of waterproof solar carport brackets are available?

Image
  Under the backdrop of carbon neutrality, the photovoltaic + carport (i.e., solar carport) model is rapidly developing due to its advantages in combining clean energy production with integrated land use. Many solar carport systems currently on the market integrate waterproofing, practicality, and aesthetics, supporting various photovoltaic carport structures such as single-wing, double-wing, Type IV, and Type II. They utilize weather-resistant materials such as hot-dip galvanized steel or zinc-aluminum-magnesium alloys to adapt to different environments. 1. Multiple Waterproofing Mechanisms A typical photovoltaic carport waterproofing design uses a combined structure of "M-shaped main water channel + secondary water channel + waterproof cover + gutter + drainage pipe." Rainwater is collected in the drainage channel and discharged systematically through the gutter, ensuring a dry interior. Integrated Design: The solar photovoltaic modules are integrated with the structure, an...
Read more