Solar street lights only need periodic inspection and little maintenance workload, the maintenance costs less than the conventional power generation system; ⑦ installation components building blocks, flexible and convenient installation, users need to select and adjust the size of solar street lights ; ⑧ self-powered, off-grid operation of the solar street lights with power supply autonomy, flexibility.

Solar street lamp shortage
The cost is high, the initial investment of solar street light, a solar street light total cost is 3.4 times the same power conventional street; energy conversion efficiency is low, the conversion efficiency of solar photovoltaic cells is about 15% to 19%, theoretically silicon solar cell conversion Efficiency up to 25%, but in the actual installation, may be due to the surrounding buildings to reduce the efficiency caused by blocking. Currently, the area of ??solar cells 110W / m2, 1kW solar cell area of ??about 9m2, such a large area is almost impossible to fixed in the poles, so for the fast road, the main road is still not applicable; affected by geographical and climatic conditions , Due to rely on the sun to provide energy, the local climate and weather conditions directly affect the use of street lamps. Rainy days too long will affect the lighting, resulting in illumination or brightness of less than the national standard requirements, and even do not turn on the lights, Chengdu Huanglongxi solar street light due to lack of daylight, resulting in the evening light is too short;

Device life and cost-effective. Battery and controller prices higher, and the battery is not durable enough to be regularly replaced, the controller's life is generally only 3 years; low reliability. Due to climate and other external factors too much, resulting in reduced reliability. Shenzhen Binhai Avenue solar street lights are 80% can not rely solely on the sun, and Chongqing Dazu County Yingbin Road, are using the city power dual power supply; management and maintenance difficulties. Solar street lamp maintenance difficulties, the battery panel of the heat island effect of quality control can not be detected, the life cycle can not be guaranteed, and can not be unified control and management. The general illumination range is 6 ~ 7m, beyond the 7m will be dark outside, can not meet the fast road, light can not meet the requirements of the road, The main road needs; solar street lighting has not yet established industry standards; environmental protection issues, improper handling of the battery may cause environmental problems. In addition, security is a big problem.

Top 10 Solar Light Manufacturers in Letect Company in China, Garden Solar lights, Solar LED Light
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