When installing a photovoltaic power station, consider these 5 questions!

The solar power generation system is not a standardized product, and the same configuration may not be suitable for all users. It needs to be designed and configured according to the user's own situation. Many customers know little about this. So for users who are interested in purchasing a solar power generation system, what considerations should be made before purchasing?

1The objective environment of the place of residence

It is recommended to first consider the installation location and installation area of photovoltaic modules. Generally speaking, south roofs or east-west facing roofs are more suitable for installation. In addition, families with yards or balconies can also consider installing sun sheds, carports or awnings.

Generally speaking, each kilowatt of photovoltaic power generation system can generate about four kilowatt hours of electricity per day on average per year. Flat paving requires a roof area of 10 square meters, while diagonal paving requires about 7 square meters depending on the angle. Users can roughly estimate how much photovoltaic power generation system they need for their home based on electricity consumption and available area. Currently, single-family houses such as villas, townhouses, remote areas and rural areas are more suitable for solar photovoltaic power station projects. .

2 personal economic factors

Although the investment in personal distributed photovoltaic power generation projects is relatively large, it is a long-term and environmentally friendly investment. According to calculations, taking the current sunshine situation in Shanghai as an example, every 10,000 yuan of equipment can generate 1,500 to 2,000 kilowatt hours of electricity a year. Assuming that it is 100% integrated into the national grid and all subsidies are in place, it will take 5 to 8 years. The cost can be recovered. The life of photovoltaic equipment is generally about 25 years, after which it is a net profit.

3 Consider the impact of load on photovoltaic arrays and buildings

From the perspective of safety and stability, the impact of permanent load, wind load, snow load, and temperature load on photovoltaic arrays and buildings needs to be considered during design. Ensure that the photovoltaic array can withstand the local extreme climate. Before installing the distributed system, the load capacity of the building must be surveyed, calculated and checked, and a reasonable installation plan should be designed.

4 Selection of on-grid mode

The State Grid adopts an encouraging and cooperative attitude towards the application of distributed photovoltaic power generation, allowing photovoltaic power station owners to use the settlement model of spontaneously using surplus electricity to go online or all the electricity used to go online. Which of the two on-grid models generates more revenue? According to calculations by industry insiders, if the electricity consumption is not too large and the electricity price does not exceed the first level, based on the current revenue, the full-scale on-grid model is more appropriate. If the electricity consumption is particularly large and reaches the third-tier electricity price standard, it is recommended to use the self-generated surplus electricity grid mode to be more appropriate. From a national strategic level, it is natural to encourage household users to adopt the mode of spontaneously using surplus electricity to access the Internet, which is also in line with the characteristics of distribution.

5 Installer options

A photovoltaic power generation system mainly includes photovoltaic modules, inverters and various wires, as well as electricity meters and monitoring devices. Once the quality of the equipment is not good, it will not only affect its own electricity safety, but may also affect other users. It is recommended that you choose regular manufacturers, quality-assured photovoltaic modules and related equipment when purchasing to avoid worries.