As the world continues to lead the charge in renewable energy, large solar projects are becoming an increasingly viable option for commercial and utility scale energy generation. However, the most important factor in any solar project plan is the selection of the best mounting system for the solar power system. It will contribute to the efficiency and cost-effectiveness and sustainability of the installation.

Whether you are installing a ground-mounted or roof-mounted solar array, there are a number of considerations to make when selecting a solar mounting system for your large-scale project. Let’s break down the key considerations that will help you make the best choice for your commercial solar installation.

1. Site Conditions and Terrain

Characteristics of the site on which your solar array will be installed are probably the most significant factor when choosing a mounting system. In the case of ground-mounted solar systems, the ground itself must be examined for stability and soil type in its ability to carry the weight and structure of the panels. Rough, rocky, or sandy grounds may demand more specialised solutions, but flat, smooth terrain is well suited to standard mounting systems.

On the other hand, roof mounted systems rely on the strength of the building. It is only through these roof-mounted systems that panels and mounting hardware, supported on the roof, do not give in to even compromise safety or structural integrity.Other important factors for these installations include roof slope, orientation, and space availability.

2. Cost and Budget Considerations

One of the primary concerns for any large-scale solar installation is the cost. Generally, ground-mounted systems are much more expensive compared to roof-mounted ones because they need additional equipment like racks, frames, and even excavation. Still, they might be more flexible in terms of panel orientation and tilt, which could help in producing energy more efficiently at times.For roof-mounted systems, cost is generally lower, but the condition of the roof, its potential for modification, and the total complexity of installation have to be taken into account. 

The optimum solar light applications for roof-mounting are commercial buildings with extensive, unused roof areas while ground-mounts may be suitable for open land, even with utility-scale solar projects that do not have problems about space.

3. Tilt Angle and Orientation

Optimising the tilt angle and orientation of your solar panels is very important to maximise energy generation. Ground-mounted systems can be positioned at optimal tilt angles depending on the geographical area where the solar system is located. This advantage can be found in ground mount systems, most particularly in huge projects spread throughout diverse terrains.

The other limitation of installing roof-mounted systems is their dependence on the angle and orientation of the roof. It means that a less-than-ideal slope of the roof, or that faces in the wrong direction, can influence the production of energy produced. In some cases, adjustments such as mounting systems with adjustable angles can help, but these will likely increase the overall cost and complexity.

4. Maintenance and Accessibility

Another important factor in the choice of a solar mounting system is maintenance. Generally, systems that are ground-mounted are easier to reach for cleaning, inspection, and maintenance because of their height above the ground, which does not necessarily require ladders or scaffolding to access.

With roof-mounted systems, though, maintenance can be a bit tougher. The fact that workers might need to climb the roof to reach a mounted system and potential safety issues make the maintenance routine more planning-intensive, to ensure panels are washed and inspected periodically without harming the workers.

5. Wind and Weather Resistance

The world’s diverse climate means that solar systems must be designed with a wide range of weather conditions in mind—extreme heat in desert regions, as well as coastal areas facing stronger winds. Therefore, ground-mounted systems must usually be designed accordingly. Their lower profile may also offer better wind resistance than roof-mounted systems.

However, roof-mounted systems have to be assessed carefully to determine whether they can withstand the local wind conditions and not be damaged or torn off during storms.

For both setups, high-quality mounting hardware designed for diverse environmental conditions worldwide and corrosion-resistant materials suitable for coastal areas should be used.

6. Scale and Future Expansion

Ground-mounted systems are more flexible because a large-scale solar project can be expanded as the energy need grows. As space is simply added, this ensures that no additional structural support is needed for new panels to be brought in across the area.

The systems installed on a roof are more likely to face limitations imposed by the free space available at the top of a building. In case one predicts a dramatic increase in future energy consumption, enough free space or design with an avenue for future enhancement has to be reserved in a solar mounting system.

7. Environmental Impact

Ground mounts are more disruptive to the natural environment as they have to clear or excavate the land for installing the system but may not be an issue with large-scale utility projects when the land is being cleared for solar power, in any case, the environmental impact of a solar mounting system should consider some sustainability goals.

The environmental impact is significantly lower with roof-mounted systems, where existing infrastructures are used. Still, attention should be drawn to the impact of putting up such a structure both on the building itself and the wider environment.

Making the Right Choice for Your Large-Scale Solar Project

A good choice of mounting system for a large-scale project will require the balance of site conditions, budget, need for maintenance, and scalability in the long run. Both ground mounted and roof mounted have their merits, and the best choice would depend entirely on the specifics of your commercial or utility-scale solar installation.

Careful evaluation and planning of the above factors ensure optimised energy production, reduced costs, and a prolonged lifespan of a solar investment—a significant contribution to the global transition toward renewable energy.

Take the Next Step in Your Solar Project

Choosing the right solar mounting system is a crucial step toward a successful large-scale solar installation. Whether you need a ground-mounted or roof-mounted system, making an informed decision will ensure maximum efficiency, longevity, and return on investment. If you’re planning a solar project and need expert guidance, reach out to our team today. Let’s work together to create a sustainable and cost-effective solar solution tailored to your needs.