What is one reason high-pressure sodium and metal halide lamps are popular?

High-pressure sodium (HPS) and metal halide lamps are indeed known for their longer life spans, which contributes significantly to their popularity. These lamps can typically last several thousand hours longer than many other types of lighting options, such as incandescent bulbs. A longer lifespan means fewer replacements are needed over time, which not only reduces maintenance efforts but also lowers the overall cost associated with frequent lamp changes.

In addition to their longevity, the efficiency of these lamps allows for effective outdoor lighting and is often utilized in applications like street lighting, parking lots, and sports facilities. Their ability to maintain lumen output over time helps ensure that illumination remains consistent, creating a safer environment in various settings.

While cost, maintenance, and energy consumption are important factors in the decision to use particular lighting technologies, the longer lifespan of high-pressure sodium and metal halide lamps is often a decisive feature for users concerned with operational efficiency and long-term investments in lighting solutions.