The key differences between the two types of mounting systems lie in their power generation gains, structural stability and O&M requirements. Selecting the appropriate system based on roof conditions, project scale and revenue requirements is essential to maximise benefits, and the specific scenarios for which each is suitable are clearly distinguished.

1. Scenarios where adjustable mounting systems are the preferred choice: where the aim is to maximise power generation and achieve a quick return on investment

The key advantage of adjustable mounting systems is that they allow the optimal tilt angle to be manually adjusted in line with seasonal changes in the sun’s altitude, thereby offsetting the loss of power generation caused by shifts in sunlight during winter and summer. This can lead to a stable annual increase in power generation of 3–8 percent, with gains of over 10 per cent achievable in highly optimised scenarios. They are suitable for high-quality solar projects seeking high returns and a short payback period.

Suitable applications primarily include: large-scale, contiguous commercial and industrial rooftop PV installations; ground-mounted centralised PV power stations; unobstructed, open rural rooftops; and projects in regions with excellent solar resources, such as South China and Northwest China. Such projects feature roofs with sufficient load-bearing capacity, open sites and convenient operation and maintenance. With just 2–4 simple angle adjustment operations per year, they can achieve long-term increases in power generation. The cumulative increase in revenue over time is substantial, fully covering the minimal O&M costs, making them extremely cost-effective.

2. Scenarios where fixed brackets are the preferred choice: where stability is a priority, maintenance is not required, and the budget is limited

Fixed mounting systems prioritise safety and stability, require zero maintenance and are low-cost; they are suitable for PV projects that do not place high demands on power generation gains, prioritise roof safety and seek hassle-free operation.

Core application scenarios: residential rooftops in urban and rural areas, roofs of older buildings, lightweight colour-coated steel sheet workshops, and small-to-medium-sized distributed PV projects with limited budgets. Such projects typically feature moderate roof load-bearing capacity and present challenges for subsequent operation and maintenance. Fixed mounting systems offer 25 years of stable structural safety and fault-free operation with minimal power generation loss, requiring no manual maintenance; they are therefore the most reliable and hassle-free solution.

The key principle behind selecting photovoltaic mounting systems has never been that ‘the more high-end, the better’ or ‘the higher the power output, the better’; rather, it is about matching the system to the project context and striking a balance between safety, cost and returns. For open, high-quality sites and large-scale commercial projects, adjustable mounting systems should be prioritised to increase power output and boost returns; for older rooftops and small-scale residential projects, fixed mounting systems should be prioritised to ensure stability and reduce costs.

Our entire range of photovoltaic mounting systems—both fixed and adjustable models—utilises virgin base materials compliant with national standards and standardised anti-corrosion processes. Having undergone professional mechanical simulation and verification, these systems meet structural safety standards and offer broad compatibility. We can tailor bespoke mounting solutions based on the customer’s roof type, local climatic wind loads, project budget and revenue requirements, whilst providing an official warranty throughout the entire process to ensure the long-term, stable operation and efficient revenue generation of photovoltaic power stations.