It depends on where you install it, because the lighting conditions are different in different areas. Assuming your local maximum sunlight period is 6 hours, a 1 kW solar power generation system is typically enough to provide 3 kilowatt hours of electricity per day, or four 250 W solar panels. installed on the ground or on a flat roof, it requires about 10 square meters of installation area; a sloping roof requires approximately 8 square meters. The total cost is around 10,000 yuan.
Overall, it's worth it. From an economic point of view, you will not have to spend money on using electricity in the future. The state will also provide you with subsidies, with a subsidy of 0.42 yuan per kilowatt hour. Some local authorities like Foshan City also provide an additional subsidy of 0.1 yuan. yuan per kilowatt hour. If you have a lot of electricity,you can still sell it to the state, the purchase price of the power supply bureau is not less than 1 yuan per kilowatt hour, which means that 1 kilowatt hour of electricity can be sold. be sold for more than 1.42 yuan. The investment can be recouped in 5 years. In addition, solar energy is a clean and more environmentally friendly energy, I don't need to say that.