How to effectively solve the problem that solar street lights often have different working hours?

The uneven distribution of solar radiation in a year is a key problem that leads to the different working hours of solar street lights (aside from the automatic setting of the lighting time, here we mainly talk about the situation of lighting all night). So how to solve this problem, Changhui lighting street lights have the following two solutions for reference: Both solar LED garden lights and solar LED street lights can automatically set the lighting time, and then calculate the solar panel according to the electric energy consumed by the lighting time. And the capacity of the battery, if it is calculated according to the lighting time of 12 hours in winter (here is an example of lighting time), then it is dark at 8 o'clock in summer and bright at 5 o'clock, so there is no need to turn on the lights for 12 hours, and solar energy will be wasted at this time. The capacity of the board and the battery will also encounter the same waste problem in spring and autumn. If the design is based on 8-9 hours in summer, then in winter it will be dark at 5:30 and dawn at 7:00. The solar street lights are designed according to the spring and autumn, which is enough to meet the possibility of having light all night in summer. For winter, a complementary controller of mains power can be added, and the solar lights and the mains power can be operated together. Of course, the investment cost of the newly installed lamps will be relatively large. It is best to carry out the project of street lamp lighting renovation, as long as a set of independent power generation solar photovoltaic system is installed on the original street lamps.