How to select components to facilitate on-site installation and system matching in distributed projects, and bring the most stable and reliable benefits to customers. Under normal circumstances, distributed photovoltaic projects can be divided into three categories based on the installed capacity on the roof: small household, large household&small and medium-sized industrial and commercial, and large industrial and commercial. Different application forms have different logic for component selection, and the corresponding components are not necessarily the larger the size, the better. Specifically, as follows:

How to select project components

The core concept of small household distributed project design is that the higher the installed capacity, the greater the revenue. However, due to the small size and diverse forms of residential roofs, it is particularly important to maximize the use of roof area. In addition, the installation conditions are slightly strict, and the installation of large-sized components is relatively difficult.

Secondly, how to select components for large household and small and medium-sized industrial and commercial projects

Large scale household and small and medium-sized industrial and commercial projects are between small household and large industrial and commercial projects, with moderate usable area and slightly relaxed installation conditions. The BOS cost reduction brought by high-power components is gradually reflected, but its core logic is still to use limited area to increase installed capacity.

This type of roof has a relatively large area, but may have irregular, scattered, inconsistent roof orientations, and low utilization rates. To ensure the safety, reliability, and power generation of the project, it is necessary to comprehensively consider roof factors related to the layout of maintenance channels, parapets, daylighting strips, ventilation windows, air conditioning, fresh air equipment, stairwells, elevator machine rooms, and other components.

Then, how to select components for large-scale industrial and commercial projects

The core concept of large-scale industrial and commercial rooftop systems is still that the higher the installed capacity, the greater the revenue, while considering the BOS savings brought by high-power and high-efficiency components. This type of project has a relatively regular roof, consistent orientation, high usable area, and a relatively flat roof, which can assist in mechanized lifting and handling equipment, facilitating product handling and installation. Therefore, the component selection logic can refer to ground power stations. If the load requirements for the roof are relatively high (color steel tile roof), components with smaller unit weight and higher energy density will be more competitive.

For these three types of distributed roof projects, several typical roofs are selected and different types of components are used for customer value calculation. In different types of distributed roof projects, the various components recommended in this article have high customer returns in the corresponding projects. However, no product can achieve the best performance in all three types of projects at the same time. Instead, component selection needs to be tailored to the actual roof situation.