THE PRODUCT:
Metal halide lamp fixtures (MHLFs) were once commonly used in industrial buildings and high-ceiling commercial applications such as gymnasiums and big-box retail stores, as well as in some low-ceiling applications and in street lights and other high-light-output applications. However, metal halide lamps are increasingly being replaced by LEDs.
THE STANDARD:
The current standards for metal halide lamp fixtures took effect in 2017. The standards, which specify minimum ballast efficiency levels, apply to fixtures designed to operate lamps with wattages between 50 W and 1000 W.
In 2021 and 2026, DOE issued final determinations not to amend the standards for MHLFs.
*The energy efficiency metric, minimum ballast efficiency, is expressed in percent (%).
KEY FACTS:
DOE's modeling of shipments projects a decline of more than 99% in 2030 relative to MHLF shipments in 2021.
Timeline
| Federal | Date |
| Next Review Due | 2029 |
| Final Negative Determination | 2026 |
| Final Negative Determination | 2021 |
| 2nd Federal Standard Effective | 2017 |
| 2nd Federal Standard Adopted | 2014 |
| 1st Federal Standard Effective | 2009 |
| 1st Federal Standard Adopted | 2007 |
| EISA Initial Federal Legislation Enacted | 2007 |