The Federal Energy Management Program (FEMP) provides acquisition guidance for suspended fluorescent luminaires, a product category covered by FEMP efficiency requirements. Federal laws and requirements mandate that agencies purchase ENERGY STAR-qualified or FEMP-designated products in all product categories covered by these programs and in any acquisition actions that are not specifically exempted by law.
FEMP’s acquisition guidance and efficiency requirements apply to suspended 4-foot-long luminaires with linear fluorescent lamps that are used in commercial and institutional buildings. Product performance must be measured in accordance with National Electrical Manufacturers Association (NEMA) LE 5-2001: Procedure for Determining Luminaire Efficacy Ratings for Fluorescent Luminaires.
Recessed, surface-mounted, and industrial luminaires are covered by separate FEMP-designated efficiency requirements and are excluded from this product category. Residential pendant-mounted fixtures are covered by the ENERGY STAR program and are excluded from this product category.
Find Product Efficiency Requirements
Federal purchases must meet or exceed the minimum efficiency requirements in Table 1.
|Table 1. Efficiency Requirements for Suspended Fluorescent Luminaires|
|Optical Element||Distribution Pattern||Luminaire Efficacy Rating (LER)|
|Lensed||Semi-indirect||≥ 92 lm/W||≥ 72 lm/W|
|Indirect||≥ 80 lm/W||≥ 71 lm/W|
|Louvered||Direct||≥ 57 lm/W||≥ 50 lm/W|
|Semi-direct||≥ 61 lm/W||≥ 54 lm/W|
|Direct-indirect||≥ 69 lm/W||≥ 59 lm/W|
|Semi-indirect||≥ 87 lm/W||≥ 70 lm/W|
|Indirect||≥ 70 lm/W||≥ 53 lm/W|
|Other||Direct||≥ 64 lm/W||≥ 61 lm/W|
|Semi-direct||≥ 64 lm/W||≥ 58 lm/W|
|Direct-indirect||≥ 73 lm/W||========|
|Semi-indirect||≥ 86 lm/W||≥ 71 lm/W|
|Indirect||≥ 84 lm/W||≥ 73 lm/W|