Choosing the appropriate lumen output for an LED solar street light can be done by following these steps:

1. Determine lighting needs

Purpose: Identify the street light's intended use (e.g., residential, commercial, parking, pedestrian, etc.).

Safety: For safety reasons, higher brightness is required for main roads and high-traffic areas.

2. Calculate the illuminated area

Illumination range: Determine the area each street light will illuminate. Generally, the spacing between street lights and their illumination range will influence the lumen selection.

Spacing: Typically, street lights are spaced 3-5 times their fixture height. For example, if the fixture height is 4 meters, the spacing can be set at 12-20 meters.

3. Select the appropriate lumen output

Lumen reference values:

Residential areas: 300-800 lumens

Pedestrian paths: 500-1000 lumens

Commercial areas: 800-2000 lumens

Main roads: 1000-3000 lumens

4. Consider environmental factors

Ambient light sources: If there are other light sources nearby (such as streetlights or store lights), the lumen output may be reduced appropriately.

Terrain and vegetation: If there are trees or buildings blocking the light, the lumen output may need to be increased to ensure sufficient light penetration.

5. Evaluate energy efficiency

LED efficiency: Select high-efficiency LED lamps that provide sufficient lumen output at a low power level.

Solar panels: Ensure that the solar panel power can support the selected lumen output.

6. Field testing

Sample lamp testing: Test the sample lamp in a real-world environment, observe the lighting effect, and make adjustments if necessary.

By following these steps, you can select the appropriate lumen output for your LED solar street light based on your actual needs, ensuring that it meets your lighting needs while achieving energy savings.