I’ve heard the new LEDs disrupt sleep patterns. Is that accurate?

There is no evidence that LED streetlights impact human sleep cycles any differently than HPS streetlights that have been used for the past 30 years. When considering the effects of light at night, indoor lighting is more of a concern. The quantity of light emitted by streetlights is many times lower than that emitted by typical indoor lighting, TVs, tablets or PC screens. The U.S. Department of Energy has published a number of documents to address the statements made by the American Medical Association (AMA) with regards to the stated health issues.

  • The SSL Posting comments on the AMA statements of health issues.


  • True colours, which explains the LEDs and the relationship between colour temperatures, colour rendering, optical safety, material degradation, and light-induced stimulation of human circadian functions (photobiological safety) 


Show All Answers

1. How many streetlights does FortisAlberta own and operate?
2. Why did FortisAlberta introduce an LED Conversion Streetlight Option?
3. Why did FortisAlberta change its lighting standards?
4. Will HPS streetlights still be available to FortisAlberta customers?
5. What are the benefits of converting to LED technology?
6. How many streetlights does FortisAlberta plan to convert under the LED Streetlight Conversion Option?
7. Why are municipalities switching to LEDs?
8. Why does our community look different with LED streetlights? Why do LEDs appear brighter, but my street is darker?
9. How do LED fixtures impact light pollution?
10. What does LED mean?
11. What does HPS mean?
12. What does CRI mean?
13. What is a BUG rating?
14. Why did FortisAlberta change the colour temperature of their LED lights?
15. Will the 3,000K LED lights make everything look orange like the old HPS lights?
16. Why does the colour temperature of streetlights matter?
17. Have the health impacts of the blue/white light associated with LEDs been considered?
18. I’ve heard the new LEDs disrupt sleep patterns. Is that accurate?