Various uses of solar street lamp Solar street lights are not a new outcome. Usually, the system carries street lamps, solar panels, solar controllers, batteries, arm, pole, wires and so on. You may find some predictions in your city. They can rescue all electricity costs and resources. It looks great. You may think we should use solar street lamps far and wide. The main reason of solar street lamp is price. When the power consumption of street lamps is 60 Watt, it needs 150 - 170 Watt solar panels and 2 units 80 Ah batteries. The price is near USD 1, 000. If the power consumption is higher, such as 150 Watt, the price will be a little amazing. Many countries cannot bear the price. However, as conventional HPS street lights, the power consumption is usually 60W, 80W, 150W, 250W or 400W. So, the cost is high in most cases. Many countries cannot bear the cost.
In the past two years, LED solar street lamps have become more and more famous. They use LED (Light Emitting Diode) as light origin. Contrast with traditional HPS lamps, LED lamps can save 50%-70% energy. For example, 30W, 60W, 110W and 160W LED lamps can replace 80W, 150W, 250W and 400W HPS lamps Main advantages of LED light are as follow Lower power consumption Higher power efficacy - LED street lights exceed mercury vapor's 31 lm/W. You can find higher efficacy measurements for high pressure sodium lamps. More Lux Per Watt - more than double that of a mercury vapor street light. Longer lifetime (50,000 hours)