Solar energy is an inexhaustible, clean, non-polluting and renewable green energy source. The use of solar power, incomparable cleanliness, a high degree of security, the relative breadth and sufficiency of energy, long life and maintenance-free and other conventional energy does not have the advantages of photovoltaic energy is considered the most important new energy in the twenty-first century.

Solar street light is a kind of street light that uses solar energy as an energy source. It is not affected by conventional electricity, does not need to drain trenches and buried wires, and does not consume conventional electricity. It can be used as long as there is sunlight.

For example, as the temperature changes, the current of the LED will increase, and the increase of the voltage will increase the current of the LED.