The Best Solar Street Lights: A Comprehensive Purchasing Guide from Leading Solar Street Light Manufacturers

When selecting lighting fixtures, understanding the difference between watts (W) and lumens (lm) is crucial. Watts indicate energy consumption, while lumens measure the output brightness of light. Generally, the higher the lumens, the brighter the fixture will be. To ensure effective lighting, here is a summary of key parameters:

Watts (W): Represents the power of the fixture; higher values indicate greater energy consumption.
Lumens (lm): Indicates the brightness output of the fixture; higher lumens means stronger brightness.
Lumens per Watt (lm/W): Measures efficacy, representing the number of lumens produced per watt of power; a higher number indicates more energy efficiency.

Lumen Requirements for Outdoor Street Lights

The lumen output needed for outdoor street lights varies based on factors such as pole height, road width, and ambient light conditions. It’s essential to consider recommended illumination levels for different road types:

1. Residential Streets: 5,000 to 12,000 lumens per light.
2. Main Roads and Highways: Typically require 10,000 to 15,000 lumens for adequate safety.

Lumen Output by Pole Height:

• 6 m Height: 6,000 lumens
• 8 m Height: 8,000 lumens
• 10 m Height: 10,000 lumens
• 12 m Height: 12,000 lumens
• 14 m Height: 15,000 lumens
• 16 m Height: 18,000 lumens
• 20 m Height: 25,000 lumens

Selecting the appropriate lumens and watts can significantly enhance both lighting quality and energy efficiency. For detailed guidance and examples, please refer to the link: Lumens vs watts: lumens to watts conversion chart

Lux signifies the actual brightness of illumination, measuring light flux per unit area, and is commonly used to assess lighting effectiveness and suitability.

Highways:

• First-class and Second-class: 20 lx (low) / 30 lx (high), uniformity: 0.4.
• Third-class: 15 lx (low) / 20 lx (high), uniformity: 0.4.
• Fourth-class: 10 lx (low) / 15 lx (high), uniformity: 0.3.

Values apply to asphalt; concrete requirements can be reduced by up to 30%.

Urban Roads:

• Expressways and Main Roads: 20 lx (low) / 30 lx (high), uniformity: 0.4.
• Secondary Roads: 15 lx (low) / 20 lx (high), uniformity: 0.4.
• Side Roads: 10 lx (low) / 15 lx (high), uniformity: 0.3.

Rural Roads:

• Primary Roads: 10 lx (low) / 15 lx (high), uniformity: 0.3.
• Side Streets and Lanes: 5 lx (low) / 8 lx (high).
• Public Activity Squares: 10 lx (low) / 15 lx (high).

For more details, please refer to the link: [What is Lux in Lighting? Solar Street Lighting Lux Level standard]

Choosing the right color temperature for solar street lights is crucial for achieving the desired ambiance and visibility. Color temperature is measured in Kelvin (K) and affects how light appears; warmer temperatures (below 3000K) emit a yellowish light, creating a cozy atmosphere, while cooler temperatures (above 5000K) produce a bluish-white light that enhances visibility and safety.

When selecting the color temperature for solar street lights, the following standards are worth considering:

Road lighting color temperature suggestions:
Highway lighting: not more than 5000K, usually choose low and medium color temperature, but in some projects can be used 5700K or higher.

Airport road lighting: no more than 4000K, glare control lens should be added.

Residential road lighting: Low to medium color temperature is recommended, usually kept below 4000K.

Rain and fog road lighting: it is recommended to use low color temperature lamps, the recommended range is 2700K-3500K.

Road lighting in commercial areas: High color rendering index (CRI), low to medium color temperature light sources are recommended.

Parking lot lighting: 5700K-6500K color temperature is recommended.

Garden and industrial lighting: Warm color temperature 2700K-3000K is recommended to create a warm and relaxing atmosphere.

For more details, please refer to the link: [Choosing the Right Color Temperature for Your Solar Street Light Project]