What are the common wattages for HID high-mast lights?
For traditional HID (High-Pressure Sodium or Metal Halide) high-mast lights, the power rating of a single fixture ranges from 250W to 2000W, with 400W, 600W, 1000W, and 1500W being the most common options.
Typical applications include:
400W: Used for smaller high-mast installations (height of approximately 15 meters, coverage radius of 30–40 meters), such as intersections and small public squares.
600W: Medium-sized highway interchanges and parking lots.
1000W: The most common choice, used for highway mainlines, port storage yards, and airport aprons.
1500W–2000W: Large stadiums, container terminals, mining sites, and other locations requiring extremely high illuminance. Note that these ratings refer to the power of the lamp itself; actual system power consumption must also account for ballast losses (approximately 10%–15%). For example, a 1000W high-pressure sodium lamp paired with an inductive ballast has an actual input power of about 1100–1150W. Additionally, HID fixtures experience rapid lumen depreciation—typically a 20%–30% drop in luminous flux after 2000 hours—necessitating regular lamp replacement to maintain design illuminance levels.
In contrast, LED high-mast lights can achieve the same or even superior lighting performance with lower power ratings (e.g., a 500W LED replacing a 1000W HID). They also exhibit slow lumen depreciation, requiring virtually no light source replacement within 50,000 hours of operation.
