## Browse services

Do you know how to estimate the installed capacity of a rooftop solar photovoltaic power station?

According to the roof area, the installed capacity is generally 375 watts per component. The component specifications are: 1940mm long and 992mm wide. We estimate how much photovoltaic system can be installed on the roof of the house. It can be calculated according to the following formula:

1. Fix it in cement flat. Roof: installed capacity = 120 watts / square meter × roof area.

2. Fixed in color steel or tile roof: installed capacity = 180 watts / square meter × roof area.

3. Use the elevated column to install in the courtyard to achieve active tracking: installed capacity = 130 watt / square meter × (the length of the courtyard is × 5 meters).

If the distributed photovoltaic solar power station is installed on the roof of the industrial and commercial plant of steel structure color steel tile, the photovoltaic solar power generation board is generally only covered on the south side. The proportion of photovoltaic solar power generation board is generally 1KW, occupying an area of 10m2, which is 1MW (1MW=1000KW). The project needs to use 10,000 m2 area. If it is the roof of a brick structure of a home villa, the photovoltaic solar panel will be fully covered in the uncovered area of the roof from 08:00 to 16:00. The installation method of the distributed household solar photovoltaic power station is slightly different from that of the color steel tile roof. Different, but the area ratio is similar, and the 1KW area is about 10m2. That is to say, a roof of a villa with a relatively large area (100~150m2) can be installed with a distributed roof solar photovoltaic power station of about 10KW. The average annual power generation in 25 years is about 1.0~15,000 kWh. In the case of a flat concrete roof, in order to design an optimal fixed horizontal inclination, each row of photovoltaic solar panels needs to be spaced apart to ensure that they are not obscured by the front photovoltaic solar panels, so the entire distribute photovoltaic solar power plant project occupies The roof area will be larger than the color steel tile and villa roof that can realize the tiling of photovoltaic solar panels. The 1KW occupied roof area is about 15~20m2, which means that 1MW project needs to use 1.5~20,000 m2 area. Understanding the power generation of photovoltaic systems for the average household, installing a 3~5 kW photovoltaic power generation system can meet the needs of daily electricity use.

For example: The fixed installation in Hunan, China is calculated according to the annual number of generation 1460 hours; the active tracking and installation at different time intervals is calculated according to the annual number of generation 1890 hours. A fixed installation of a 5 kW system will generate an average of 20 kWh per day, and a good temperature of 24 kWh or more. One 5 kW system that can be actively tracked can generate an average of 26 kWh per day. When the weather is good, it reaches 30 kWh or more. Based on this, you can estimate how much capacity can be installed on your roof, and how much electricity can be generated by a home solar photovoltaic power station.

Estimating the amount of household photovoltaic power generation depends on the choice of high-quality power plant components, to maintain your home solar power system, you can start to enjoy the convenience of the solar system. Need support? Contact us!

Board level and full solution level customized design.
ISO quality management system.
Other products certificate.

Write Us

Visit Us

• Factory:Yuechang, Xinxu town, Huizhou City, Guangdong Province，China
• Building B, Shangsheng Industry Park, Guangzhou
• HD Office: Building B, Shangsheng Industry Park, Baiyun District, Guangzhou, China.