In the first year of the "14th Five-Year Plan", with the national 30·60 dual carbon targets, distributed photovoltaics will usher in explosive development, especially under the impetus of the "county-wide promotion".
Distributed photovoltaic projects have the characteristics of high returns, flexible application forms, and rich application scenarios. In recent years, the proportion of applications has increased year by year, but there are still some problems, such as component product selection, system installation and matching, operation and maintenance, product quality assurance, etc.
How to select components to facilitate the on-site installation of distributed projects and system matching, and to bring customers the most stable and reliable income are our concerns. Under normal circumstances, distributed photovoltaic projects can be divided into three categories according to the scale of rooftop installations: small households, large households & small and medium-sized industrial and commercial projects, large-scale industrial and commercial projects. Different application forms have different component selection logic, and the corresponding components are also different. It's not that the bigger the size, the better it is. Details are as follows:
The core concept of small-scale household distributed project design is that the higher the installed capacity, the greater the profit. However, since the residential roof area is usually small and the roof forms are different, it is particularly important to maximize the use of the roof area. In addition, the installation conditions are slightly harsh, and the installation of large-size components is relatively difficult.
Based on this, integrating industry status and the requirements of small household systems for component power, electrical parameters, size and weight: the size and weight of M6-60 and G1-72 components are more convenient for one person to transport and install (the weight of the two components is controlled at about 20kg). Among them, the M6-60 version of the component has a short-circuit current of less than 11.5A, which can be adapted to the mainstream inverter models in the global market. When the roof area is slightly large due to the G1-72 version of the component and is limited to a certain extent, it is better to use the compact M6-60 version which is relatively small. Through diversified size selection and more flexible component arrangement, the roof installation capacity is increased to the maximum and the customer's profit is maximized.
Large-scale households and small and medium-sized industrial and commercial projects are between small-scale households and large-scale industrial and commercial projects. The usable area is moderate, and the installation conditions are slightly loose. The BOS cost reduction brought by high-power components is beginning to manifest, but its core logic is still to use limited area to enhance installed capacity.
This kind of roof area is relatively large, but it may have the characteristics of irregular, scattered, inconsistent roof orientation and low utilization rate. In order to ensure the safety, reliability and power generation of the project, it is necessary to comprehensively consider the maintenance channel, parapet, daylighting band, ventilation windows, air conditioners, fresh air equipment, stairwells, elevator machine rooms and other roofing factors related to the arrangement of components.
In conclusion, M6-72 version, M10-54 version, G12-50 version components stand out. These series of components are relatively flexible in size, suitable in weight, high in power and efficiency, easy to install, and their electrical parameters can match with mainstream inverter models in the global market. They can bring better benefits to customers.
The core concept of large-scale industrial and commercial off grid solar systems is still that the higher the installed capacity, the greater the profits, and the BOS savings brought by high-power and high-efficiency components need to be considered. Such projects have relatively regular roofs, consistent orientation, high usable area, and relatively flat roofs, which can assist mechanized hoisting and handling equipment to facilitate product handling and installation. Therefore, the component selection logic can refer to ground power stations. If the load requirements of the roof are relatively high (color steel tile roof), the components with smaller unit area weight and greater energy density will be more competitive.
Based on the characteristics and requirements of the above projects, M6-72 version and M10-72 version components are the best solutions for large-scale industrial and commercial projects. These two types of high-power and high-efficiency components can be well matched in terms of size, weight, electrical parameters, and system compatibility (the working current of M10-72 version components is about 13A). It is worth noting that the super high current will also bring higher safety risks to the roof.
For these three types of distributed roof projects, several typical roofs are selected, and different types of components are used to calculate customer value. In different types of distributed roof projects, the various components recommended in this article have high levels of customer benefits in the corresponding projects, but there is no product that can achieve the best in the three types of projects at the same time, and the component selection needs to be based on the actual roof situation and local conditions.
With 16 years of experience in the photovoltaic industry, Sunrise Energy Co., Ltd has component specifications ranging from G1, M6, M10 to G12. The product adopts perc battery, half-cell multi-busbar, non-destructive scribing and other technologies, which can meet customers' diversified customized needs such as all-black, double-sided, and double-glass. Among them, solar energy systems cover more than a thousand solutions for households, commercial distributed projects, small and medium-sized power stations, etc., with business footprints in more than 50 countries around the world, and more than 100 key trading partners. At present, the company has also expanded businesses such as solar cells and energy storage to create a sustainable future through clean solar energy in many ways.