The dirtiest little secret in LED lighting is that luminaire lifetime values are nearly meaningless for the vast majority of luminaire manufacturers. Why is this? Two reasons: First, all manufacturers typically report TM-21 LED chip projected lumen maintenance values as the luminaire lifetime. This does not include the driver nor other components. Drivers have historically [...]















![Dallas Market Center ArcLight Summit banner: Call for Speakers, June 22–23, 2027 — Apply Now (logo with colorful arc.”] ,](https://i0.wp.com/www.lightnowblog.com/wp-content/uploads/2026/10/2610_LightNow_Archlight_Banner-Ad_900x400-e1792264459229.png?fit=900%2C400&ssl=1)

