LED solar street light controller is the core equipment in street light. It is connected to the solar panel, battery and light source. When the controller senses the voltage of the solar panel drops to the set position, it drives the light source of the LED solar street light to work.
When the time we set (for example, 8 hours) comes, it will turn off the light source. In addition, the solar controller has many functions, for example, it can prevent the battery from being overcharged and overdischarged to avoid battery damage.
Currently, 1 square meter of photovoltaic panels can generate nearly 240 degrees of electricity per year; a 56W LED energy-saving lamp, equivalent to a 150W high-pressure sodium lamp, works 6 hours a day and uses only 120 kWh of electricity a year.
If the two are used together, the power consumption is only one tenth of the traditional street lighting source. According to statistics, China's lighting electricity consumption has accounted for 12% of the total electricity consumption. According to China's "China Green Lighting Project", lighting power saving has become an important aspect of energy saving. At present, lighting energy-saving potential is very large, general energy-saving programs can save 20% ~ 35%. According to a conservative calculation of 20%, the value of nationwide electricity savings is very large. With the promotion and application of LED solar street lights, "green lighting" has achieved a new leap.
According to statistics, a medium-sized city, for example, if there are more than 50,000 street lights, all replaced by LED solar street lights, annual electricity savings of nearly 100 million kilowatt hours, a total of 70 million yuan, the city can save 50,000 tons of coal per year, reducing carbon dioxide emissions of 110,000 tons. Assuming that 30% of the world's streetlights switch to solar LED integrated lighting systems, a rough calculation shows that these measures could reduce global carbon dioxide emissions by 260 million tons and electricity consumption by 460 billion kilowatt hours. These figures are equivalent to India's annual electricity consumption, half of Japan's annual electricity consumption or a quarter of China's annual electricity consumption.
