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Series H outside street lights for Shang Garden Community

This project is located in the Shang Garden residential area, and the client wishes to achieve maximum energy efficiency. Currently, the existing fixtures are 200W halogen lamps, but most of the roads are 7 meters wide. After calculations, ZGSM has determined that 100W outside street lights are sufficient to illuminate these areas, including the roads and parking lots. In order to further reduce energy consumption, we suggest the client to lower the wattage of the lights during late night hours when there is less vehicular and pedestrian traffic.

As a result, we have decided on a lighting schedule where the lights will be at 100% brightness for the first four hours, followed by 50% brightness for the next four hours, and finally 30% brightness for the remaining hours. Through calculations, it is estimated that the client can achieve around 70% energy savings using this approach. The saved electricity significantly shortens the project’s payback period. Both the client and the residents are highly satisfied with this solution.

Project details:

ProductModelCCT /OpticsQuantity
100W Outside street lightsZGSM-LD100H5700K, 3M29pcs
165W Outside street lightsZGSM-LD165H5700K, 3M33pcs
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    People also ask

    LED street lighting is currently the most energy-efficient solution. Another key to reducing the energy consumption of street lights is to make better use of the energy of existing street lights, which can be achieved by using various sensing devices to switch lights, such as motion sensors, infrared sensors, automatic timers, etc.

    Taking LED street lights as an example, we use 100-watt LED street lights to replace 250W high-pressure sodium lamps. The road is 1 km long, with two lanes of road, and the distance between utility poles is 40 meters. The street lights are installed in the middle, which means we have 25 lampposts. Upon verification, the average electric rate is $0.32 per hour(German, 2021). Referring to electricity price statistics, the operating cost of street lights is (50x150x0.32×12*365)/1000 = $10,500. We consider that the annual electricity cost of a lamp is $210. Generally speaking, the installation cost of street lamps (including lamps) is $500. According to this electricity price and lamp installation cost, ROI=500/210=2.38 years.

    A short payback period means that the investment will “pay off” in a relatively short period of time, in other words, the cost of the investment will be quickly recouped by the cash flow that the investment will generate. LED street lights are such a short payback solution.

    Post Tags: #Outside street lights#Street Light

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