Five Common Misconceptions When Buying High Pressure Sodium & LED Street Lights
Jul 15, 2026
High-pressure sodium lamps are classic traditional outdoor lighting, while LED street lights have become the mainstream energy-saving solution for modern projects. Many buyers, contractors and municipal purchasers easily fall into misunderstandings when comparing and selecting these two lamps, which leads to overspending or poor project lighting effects. Based on 20 years of outdoor lighting manufacturing experience, Yulan Lighting sorts out 5 most frequent wrong perceptions for your reference.
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Misconception 1: HPS lamps are completely eliminated, all projects must choose LED
Clarify：Low-budget temporary roads, small industrial areas still suit HPS; long-term municipal road renovation priority LED, explain cost-life cycle difference. If you want to learn more about the performance, luminous efficiency and structural features of traditional gas discharge lamps, you can check our article: What is an in-depth analysis of high-pressure sodium lamps?
Misconception 2: The higher the power, the brighter the road lighting effect
Clarify：Beam angle, lens design, light distribution matter more than power; introduce Dialux simulation matching logic. The lighting brightness of the road is determined by the reasonable beam angle layout rather than power stacking. We have shared detailed scene matching schemes in this guide: How to optimize the effect of outdoor lighting customized through beam angle?
Misconception 3: All LED street lights with IP66 rating have the same durability
Clarify：Difference between cheap plastic shell & ADC12 die-cast aluminum; IK impact grade, hot-dip galvanized lamp pole supporting matching. The service life of the whole set of street lighting depends not only on the lamp body, but also the anti-corrosion performance of the lamp pole. You can view the full quality standard of lamp pole surface treatment here: Hot dip galvanizing process and industry galvanizing quality standards for the lamp pole
Misconception 4: HPS lamps have shorter service life than all LED lights
Clarify：High-quality industrial HPS lamp service life vs low-cost inferior LED; maintenance cost comparison for remote countryside projects
Misconception 5: Solar street light can replace HPS/LED mains light in all municipal roads
Clarify：Highway high traffic road needs constant mains power; solar only fits low-traffic rural roads, introduce battery capacity & rainy day endurance logic
If you need professional lighting parameter comparison or Dialux light distribution design support for your project, feel free to contact our engineering team for free consultation.
