How to build a photovoltaic power station on the roof of your home?
Recently, many customers have asked questions about home photovoltaic power plants. Here are a few answers that will help you.
1. What kind of roof is suitable for installing photovoltaic power station?
Rural villas are most suitable for installing household photovoltaic roofs - the roofs are in good condition and unobstructed. You can observe whether there are obstructions around your roof and whether the lighting conditions are good. Generally speaking, flat roofs and sloping roofs are more suitable for installing photovoltaic power plants.
On a horizontal roof, the photovoltaic array can be installed at the optimal angle (return to "light angle" in the background to query the optimal installation inclination) to obtain the maximum power generation; the biggest advantage of installing a photovoltaic power station on a flat roof is heat insulation and cooling, which can generally be Cool down by 5~7 degrees, adopt the form of cement pier + photovoltaic support. The investment cost is not high, and the economy is relatively good.
The photovoltaic power station installed on the sloped roof is more beautiful. Due to the large slope of the roof, the rainwater is easy to drain, and the construction is simple and easy to maintain. This roof-mounted photovoltaic power station does not need to increase the bracket and calculate the inclination angle to install the photovoltaic power station. When installing, it can be laid according to the inclination angle of the roof itself. At the same time, the installation capacity is not affected by the area. Due to the large slope, it can also have the effect of automatically cleaning the power station.
2. Prerequisites for installing photovoltaic power plants
The first premise is that the property rights of the roof are clear. The construction of a household photovoltaic power station requires the independent right to use the roof. Therefore, in rural areas with independent roofs, it is relatively convenient for villa residents to install them; the roofs of multi-storey or high-rise residential buildings belong to the public area and do not belong to a single household. To build a power station on it, it is necessary to obtain the consent of the owner of the entire building. Otherwise, even if it is installed, the power grid company will not connect it to the grid. (Chinese users can refer to, other countries, please consult local relevant policies)
3. How much photovoltaic power station can I install on the roof of my house, and how much does it cost?
According to the size of the roof area of the home, the roof of the general family can be installed to 3kW-10kW household projects. Of course, if the area is larger and higher-power components are used, larger projects can be done. Under normal circumstances, a roof of about 10 square meters can be installed with 1kW. Adjusting the array and actual layout, using high-power components, can also achieve 7-8 square meters to make one kilowatt.
The quotation and billing method of most photovoltaic power station systems is based on watt billing, and the current market price is 3.5 yuan to 4 yuan / watt (the current market price increase problem is serious, and the specific price is mainly based on the quotation at that time). Therefore, if you have a roof of 100 square meters in your home, you can install a photovoltaic power station of about 10kW. If you quote a system price of 3.5 yuan/watt, you need to invest about 35,000 yuan.
4. What products do I need to buy to install a photovoltaic power station and how to choose?
A set of photovoltaic power station consists of photovoltaic modules, inverters, grid boxes, cables, brackets and other products. Each product needs to be carefully selected for the brand. Therefore, if you are a photovoltaic novice, it is recommended to consult a professional team (such as Amoy ), completed or guided by a professional team from the beginning of design and installation to ensure future power generation and revenue.
Amoy is planning a small set of photovoltaic systems to meet the requirements of more customers who need small power plants. If you are lucky enough to see this tweet, please come to consult.