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9 Factors To Choose LED Power Supply For Street Lights

Street lighting plays a crucial role in ensuring safety, visibility, and aesthetics in our cities and neighborhoods. As we transition to more energy-efficient lighting solutions, LED street lights have become increasingly popular.

However, selecting the right LED power supply is essential to ensure optimal performance, longevity, and cost-effectiveness.

In this blog, we’ll explore key considerations for choosing the ideal LED power supply for street lights.

9 factors to choose led power spply on led street light

Factors to Consider:

1. Input Power -Wattage:

LED street lights typically range from 50W to 500W. It’s crucial to choose a power supply within the corresponding power range to match the street light’s requirements.

Oversized power supplies can lead to inefficiencies and unnecessary costs.

  1. Calculate Total Wattage:
    • Determine the total wattage needed for your LED lights. This includes all the LEDs you plan to power with a single power supply.
    • Sum up the wattage of individual LEDs or LED strips.
  2. 20% Power Reserve:
    • To ensure stability and prevent overloading, choose a power supply with a rated wattage at least 20% higher than the total calculated wattage.
    • This extra capacity provides a cushion for variations and ensures reliable operation.
  3. Multiple Lights on One Supply:
    • If you plan to run multiple LED lights from a single power supply, add up their individual wattages.
    • Consider the combined load when selecting the power supply.
  4. Dimming and Dynamic Load:
    • If you intend to use dimmable LED lights, ensure the power supply can handle the dynamic load during dimming.
    • Some dimmable drivers have specific requirements for minimum and maximum loads.

LED Driver Power range

Above Picture is Model: BA-804 Series LED Power Supply.


2. Input voltage range:

Street lights operate at various voltages (e.g., 120V, 240V). Ensure that the power supply’s input voltage matches the local grid voltage.

For Example: the input voltage range of LED street lights is AC 100V-265V, so it is necessary to choose a LED power supply that can adapt to this range.

904 series led driver

Above Picture is Model: BA-904 Series LED Power Supply.


3. Output current and voltage:

Select the appropriate LED power supply according to the operating current and voltage requirements of the LED street light. The operating current of LED street lights is usually between 300mA and 1500mA, and the operating voltage is usually between DC 12V and DC 48V. Therefore, it is necessary to select a driving power supply that can provide the corresponding current and voltage.

  • The power supply’s output current and voltage must align with the street light’s specifications.
  • Incorrect voltage can damage LED, affect brightness, or reduce their lifespan.

509X6E LED Power supply

Above Picture is Model: BA-509X6E Series LED Power Supply.


4. High efficiency and stability:

Choosing a LED power supply with high efficiency and stability can improve the brightness and life of LED street lights.

Generally speaking, a high-efficiency driving power supply can reduce energy loss, and a stable driving power supply can ensure the stable operation of LED street lights. We can do more than 95% Efficiency. Such as our model BA-509N7 Series LED Power Supply.

  • Look for power supplies with high efficiency (greater than 90%) to minimize energy losses.
  • Stable output voltage prevents flickering and ensures consistent illumination.


5. Protection function:

Choosing a LED power supply with over-current protection, over-voltage protection, short-circuit protection and other protective functions can improve the safety and reliability of LED street lights. Beon LED drivers are full with these protection function.

Here we also did another blog to explain:Over Voltage Protection In LED Power Supply. You can have a look too.

  • Overcurrent protection, short-circuit protection, and over-temperature protection are essential.
  • Surge protection guards against voltage spikes caused by lightning or other electrical disturbances.


6. Quality and reliability:

Choosing a LED power supply with good quality and reliability can reduce failure rates and repair costs. You can choose products from reputable and experienced suppliers, or choose products that have passed relevant certifications.

Beon LED Power supply are all pass CE, CB, FCC, Rohs,CCC, ENEC… Certification.

  • Choose reputable brands and reliable suppliers.
  • Quality components ensure longevity and minimize maintenance costs.

7. Waterproof Level:

LED street lamp power supply is mostly working in the outdoors, but the outdoor environment is relatively harsh,like heavy wind and rain, then its waterproof is particularly important.

Beon LED power supply can do IP67 waterproof. When we do LED driver packaging, we must first evacuate the air to exhaust all the air in the potting glue (epoxy resin) , prevent the electronic parts inside from oxidizing. At the same time, our driver housing structure can achieve true IP67 waterproof rating.

ip67 waterproof

IP67 waterproof rating means that the product has level 6 dustproof & 7 waterproof capabilities.

Dust level 7 means that the product can completely prevent dust intrusion, effectively prevent the intrusion of particles larger than 1mm.

Waterproof level 7 indicates that the product can be submerged in static water at a depth of 0.15 to 1 meter for 30 minutes, but not for a long time.


8. Dimming Function:

As a new generation lighting source, LED is very suitable for using intelligent dimming methods to further save power.
We can flexibly set the dimming method and time according to specific lighting projects and specific road traffic conditions.

For example: Some of the city’s remote roads, when there are few people and vehicles on the road in the late night, LED street lights can be operated at about 40% power. On the main roads in some urban areas, the power can also be appropriately reduced in the late night, which not only ensures people’s basic requirements for travel, but also saves electricity.

If LED street lights want to achieve power reduction dimming, a dimmable LED power supply must be used.
At present, dimmable LED power supplies are generally divided into two types: one is AC phase-cut dimming, and the other is 0-10V DC signal control dimming(PWM dimming).

If you want to know more about dimmable LED power supply, you can check this page: BA-706 Series LED Dimming Drivers


9.Use environment:

A. The LED power supply of LED street lights works outdoors in a poor environment. The temperature changes greatly throughout the year. The sun is exposed to the sun in summer, the cold is severe in winter, and it has to withstand the impact of heavy rain and lightning strikes, so various tolerances need to be considered.

For some government projects, it is asking for 6KV or 10KV surge protection. Beon can offer SPD (Surge Protective Device) 10KV & 20KV.

B. There are high-power high pole lights and lower-power garden street lights, some with mains voltage, some with low voltage, and some in areas with frequent lightning strikes, so the LED power supply choose not only has good constant current performance, but also has heat dissipation. Good, it can withstand lightning strikes and rain.


Calculating LED Power Supply Requirements:

  1. Power Consumption (Watts):
    • Check the power consumption (in watts) of each LED street light. This information is usually printed on the packaging or the lamp itself.
    • For multiple lights on one power supply, add up their individual power ratings.
    • Example: 5 sets: 48V LED street light modules, each module 50 watts:
      • Total power = 50 watts × 5 (quantity) = 250 watts
      • Add a 10% power reserve: 250 watts + (0.1 × 250) = 275 watts
      • A 280~300 watt power supply would be suitable.
  2. Current Consumption (Amperes):
    • If current consumption (in amperes) is given instead of watts, multiply the output voltage by the current to find the power.
    • Example:
      • 30V × 1.5A = 45 W
      • 43V ×5.5A = 236.5 W



According to the actual needs and usage environment of LED street lights, selecting a suitable driving power supply can ensure the normal operation and long life of the LED street lights.

For more detailed calculations, you can contact our sales team for more support: Email: manager@beonled.com

beon led drivers


RFQ About LED Power Supply

1, What are the common types of LED power supplies?
  • Constant Voltage (CV) Power Supplies
  • Constant Current (CC) Power Supplies
  • Dimmable Power Supplies
  • Desktop or Plug-In Power Supplies
  • Enclosed or Open Frame Power Supplies
  • Driverless or AC LED Modules
2, How do I choose the right power supply for my LED project?
  • First, Understand Your LED Lighting Application. Consider the nature of your lighting project. Where will the LED lights be deployed, and what form will they take?
  • Market segments include retail, industrial, architectural, indoor, and outdoor lighting.
  • Examples:
    • Retail: High-quality lighting for product displays, signage, and ambient illumination.
    • Industrial: Reliable lighting for long operating hours.
    • Architectural: Aesthetic lighting for buildings and spaces.
  • Invest in reliable power supplies to maximize the lifespan of your LED lighting system. If you need further guidance, feel free to ask!
3, LED Power Supply Issues On Outdoor Light
  • Bulb and Circuit Faults:
    • Sometimes, the issue lies within the bulbs or internal circuits of your LED lights.
    • Solution: Inspect and replace any faulty LED or halogen bulbs. Ensure proper connections within the circuit to maintain consistent lighting.
  • Power Supply Problems:
    • Inadequate voltage or disruptions in the power supply can render your outdoor lights inactive.
    • Solution: Verify the stability and adequacy of your power supply. Ensure the right wattage for LED strip lights. This step not only resolves lighting issues but also extends the lifespan of your LEDs.
  • Connection Difficulties:
    • Loose or corroded connections, as well as incompatible outlets, can cause LED lights to stop working.
    • Solution: Tighten any loose connections and address corroded wiring. If you suspect incompatible dimmer switches or damaged wires, consider consulting professionals for expert assistance.


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