It is said that wind-solar hybrid street lamps are expensive. From the perspective of its initial investment cost, this is indeed true. The price of a set of wind-solar hybrid street lamps is twice the price of a set of ordinary street lamps. But everyone only sees the cost of the initial investment, but has not calculated the maintenance, installation, and use costs of these two street lamps. If it is calculated according to the long-term use cost, the price of ordinary street lamps will be the price of wind-solar complementary street lamps over the years. 5 times. The price of an outdoor street lamp, you can’t just see the price of your first transaction, but also think about where it needs to be spent in the future use. In the installation, the wind-solar hybrid street lamp does not need a lot of engineering and construction. Cable line; in the electricity bill, solar energy and wind energy are used to convert electric energy, which is zero cost in the electricity bill; in terms of labor, no personnel is required to supervise, and intelligent control. In these aspects, the price of wind-solar complementary street lamps is not known to be saved. With this calculation, the price of wind-solar hybrid street lamps is not so expensive, and it is still within the acceptable range. If you want to avoid the high price of wind-solar hybrid street lamps, you have to understand the electricity load situation and resource Tianjian system in the area you use. The reasonable configuration of capacity can ensure the reliability of system power supply and reduce the cost of wind-solar hybrid street lamps.