The total cost is nearly 50,000 yuan.
Let's take as an example a 5 kilowatt photovoltaic plant built at home. During installation, you must determine whether there is enough space on the roof of the building. 10 square meters of panels per kilowatt, and 5 kilowatts require 50 square meters of rice. Based on the current market price for building a home photovoltaic power station, the total cost of various expenses is on average about 10 yuan per watt.
1. Battery panels: the best material on the market is 4 yuan/watt, 5 kilowatt ≈ 20,000 yuan
2. Installation material cost (city): aluminum alloy bracket ≈. 5,000 yuan, ordinary steel brackets ≈ 3,000 yuan (if the roofs in rural areas are mostly pointed, brackets are not needed, which will save money)
3. Supporting instruments:
Mixer box ≈ 400-500 yuan (collecting current from all battery panels, plus lightning protection function. Currently, most of them do not configure it separately, but put this function on other instruments)
Inverter (good quality)≈10,000 yuan (transforming the DC power generated by the battery panel into AC power suitable for household appliances, as well as short circuit prevention, communication and other functions)
4. ≈ 8,000 yuan
Everywhere The electricity supply company's network connection service is free.
The total cost is nearly 50,000 yuan.
The income is calculated as follows:
If there are approximately 1,300 effective hours of sunshine per year and the installed power is 3 kilowatts, then the annual production of electricity is 3 kilowatts * 1,300 hours = 3,900 kilowatt hours.
If the price of locally subsidized electricity iscalculated at 0.5 yuan/watt, then the annual income is 3,900 kilowatt hours * 0.5 yuan/watt = 1,800,000 yuan. Regardless of the degradation of the battery, the investment cost of 15,700 yuan can be recovered in 8.7 years, and then it will be a net benefit.
What also needs to be considered here is the attenuation of the battery components. Another thing to consider is that the national grants will last for 20 years. Local subsidies from provinces and cities vary from region to region. five years, and some subsidize. Three years later, there are still a lot of changes.
1. If your 2,000 square meter area has no large buildings or trees and all are used efficiently, you can probably invest 120-130 kWp.
2. According to current market conditions, the total construction cost is approximately 1 million to 1.3 million. If you want a high quality investmenté, it depends on the choice of product details and. the know-how you want.
The maintenance cost is very low. Nowadays, photovoltaic power plants are virtually unattended or monitored by a small number of people, and all of them are intelligently monitored.
3. One more thing, if you can get national subsidy in photovoltaic demonstration zone, you will save a lot of money. This way you can recoup the cost in 8 years, maybe in 5 years. Please pay attention to it. It is necessary to coordinate with the government and the power grid before construction, otherwise you will have a headache when the time comes.