With the increasing global demand for renewable energy sources, solar street lighting has received widespread attention and adoption. As a European member state, Bulgaria is also actively seeking green, efficient, and economical lighting solutions. The project used a 40W SE series LED street lamp and was completed in 2020. In terms of power supply, the street light is specially designed for DC 24V input, which can be perfectly combined with a solar power system. This means that the solar panel can fully absorb solar energy during the day and store it in the battery. When the solar street light works at night, the battery provides a stable power supply for the LED street light, thus realizing truly green, zero-emission lighting. The customer is very satisfied with the results of the installation. The use of LED streetlights in conjunction with a solar power system reduces operating costs and minimizes carbon emissions.