Which kind of solar street lamp is more economical to install?

Which kind of solar street lamp is more economical to install?
Now let's look at the introduction of solar street lamps. The main contents are as follows:
From the perspective of installation cost, the installation cost of solar street lamps is lower. Unlike traditional street lamp installation, it does not require the laying of wires and cables, nor does it require the laying of underground pipelines, which can save a lot of money.
The maintenance cost of solar street lamps is relatively low. It is difficult to maintain the incandescent lamp and lamp of Class 1, and it will cost a lot of money. However, if you choose to use solar street lamps, the maintenance is relatively simple, and the maintenance cost is also relatively low. Therefore, if you want to maintain the cost, you should install and use such street light facilities.

The price of street lamp facilities sold by solar street lamps is relatively cheap, which can better reduce the overall cost