Reason 1: Low cost

Cost Comparison of Solar Street Lights and Mains LED Street Lights
1. No wiring, low cost. The most important thing about solar street lights is to save buried wire materials and construction costs.
Let's take 3 kilometers of rural roads and install 6 meters of 30W street lights as an example, with an equal spacing of 30 meters to calculate the cost.
We use provincial points and use 3*10 buried wires.
-- Material cost: Check the wire cost online, plus the shipping cost, plus the protection tube cost, about 30 yuan/m, 30*30=900
-- The construction cost includes: ditching fee, wire dragging fee, wiring fee, and ditch covering fee, calculated as 30/m, 30*30=900 yuan. The default is soft-base pavement. If there is a cement pavement, the cost will be higher.
The wiring cost alone is already 1800 yuan. And this 1800 yuan is enough to buy a complete set of solar street lights.
2. The installation is simple and can be completed without professionals. Now the solar street light wiring has error-proof male and female headers, which can be wired without professionals, and the other work is to screw and assemble. The city circuit lights at least need a professional electrician to install the lines in the power distribution cabinet.

Reason 2: Longevity
After the battery is replaced with a lithium battery, the life of the solar street lamp is greatly improved, and the life of the solar street lamp with reliable quality can reach about 10 years. After 10 years, only a few parts need to be replaced, and the solar light can continue to serve for another 10 years.

The following is the life of the main components of the solar street light (we default the product quality is excellent, and the use environment is not harsh)

1. Solar panels: more than 30 years (after 30 years, the solar energy will decay by more than 30%, but it can still generate electricity, which does not mean the end of its life)
2. Street light poles: more than 30 years
3.LED light source: more than 11 years (calculated according to 12 hours of work per night)
4. Lithium battery: more than 10 years (the depth of discharge is calculated according to 30%)
5. Controller: 8-10 years

It can be seen that the short board of the whole set of solar street lights has been transferred from the battery in the lead-acid battery era to the controller. The life of a reliable controller can reach 8-10 years, which means that the life of a set of reliable solar street lights should be more than 8-10 years. In other words, the maintenance cycle of a set of reliable solar street lights should be 8-10 years.