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ENERGY STAR
ENERGY STAR Program Requirements for
Solid State Lighting Luminaires
Proposed Category "A" Additions
Category A: Near-term Applications
Surface and pendant-mounted downlights
Comments on Surface and pendant-mounted downlights:
• The existing criteria specifically address recessed downlights. Given the photometric
similarity amongst downlight applications surface and pendant-mounted downlights are
being added to the criteria.
Application Requirements
Minimum Light Output
< 4.5" Aperture: 345 lumens (initial)
> 4.5" Aperture: 575 lumens (initial)
Zonal Lumen Density
Requirement
Luminaire shall deliver a minimum of 75% of total lumens within the
0-60° zone (bilaterally symmetrical).
Minimum Luminaire
Efficacy
35 Im/W
Allowable CCTs
2700 K, 3000 K and 3500 K for Residential products
Outdoor pole/arm-mounted area and roadway luminaires
Comments on beam uniformity metric:
•	Goniophotometry measures luminous intensity only. Luminous flux can be derived from
intensity data using zonal constants (a trigonometric function).
•	Illuminance is also derived from intensity. The cosine law (a modified version of the
inverse square law) states that illuminance = intensity x cos © / distance2, i.e., higher
intensity is required at higher vertical angles than at nadir to produce equivalent
illuminances across the luminaire beam spread. Therefore, when concerned with
regulating illuminance uniformity, it is more relevant to address intensity than luminous
flux.
•	Note also that luminous flux and intensity are not corollaries. Whereas zonal lumens
represent a total and must sum to 100%, luminous intensity is an infinite measure and
specific to the angle of measurement. This "disconnect" between flux and intensity
underlies, in part, IESNA nullifying its luminaire cutoff classifications (superceded by the
	Luminaire Classification System, per IESNA TM-15-07).	
Application Requirements
Minimum Light Output
Luminaire shall deliver a minimum of 2,300 lumens (initial).
Zonal Lumen Density
Requirement
Luminaire shall deliver 100% of total lumens within the 0°- 90° zone, with a
maximum of 10% of total lumens delivered within the 80°- 90° zone (bilaterally
symmetrical).
Beam Uniformity
IES Outdoor Luminaire Classification Tvoe ll/lll
ENERGY STAR Program Requirements for SSL Luminaires - Category "A" Additions
August XX, 2008
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Maximum intensity (in candelas, cd) to be produced in the 55°- 65° zone
(vertical), at a horizontal angle per IESNA TM-15 definitions, with the following
requirements:
•	10% - 35%t of the max. cd in the 0°- 25° range
•	35% - 60%t of the max. cd in the 25°- 45° range
•	35% - 95%t of the max. cd in the 65°- 75° range
•	<5%t of the max cd in the 80°- 90° range



IES Outdoor Luminaire Classification Tvoe IV



Maximum intensity (cd) to be produced in the 55°- 65° zone (vertical), with the
following requirements:
•	<50%t of the max. cd in the 0°- 40° range
•	<5%t of the max cd in the 80°- 90° range



IES Outdoor Luminaire Classification Tvoe V



Maximum intensity (cd) to be produced in the 55°- 65° zone (vertical), with the
following requirements:
•	10% - 35%t of the max. cd in the 0°- 25° range
•	35% - 60%t of the max. cd in the 25°- 45° range
•	35% - 95%t of the max. cd in the 65°- 75° range
•	<5%t of the max cd in the 80°- 90° range



tAII percentages are ±5%



(Refer to IESNA TM-15-07 for luminaire classifications distribution types)


Minimum Luminaire
Efficacy
50 Im/W

Outdoor pole/arm-mounted decorative luminaires

Application Requirements


Minimum Light Output
Luminaire shall deliver a minimum of 2,300 lumens (initial).


Zonal Lumen Density
Requirement
Luminaire shall deliver a minimum of 85% of total lumens within the 0°- 90°
zone (bilaterally symmetrical).


Minimum Luminaire
Efficacy
40 Im/W

Outdoor wall-mounted area luminaires ("wall packs")

Application Requirements


Minimum Light Output
Luminaire shall deliver a minimum of 1,300 lumens (initial).


Zonal Lumen Density
Requirement
Luminaire shall deliver 100% of total lumens within the 0°- 90° zone, with a
maximum of 10% of total lumens delivered within the 80°- 90° zone (bilaterally
symmetrical).


Minimum Luminaire
Efficacy
40 Im/W

ENERGY STAR Program Requirements for SSL Luminaires - Category "A" Additions 2
August XX, 2008

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Cove lighting - Asymmetric distribution
Comments on cove lighting applications:
•	Luminaires addressed in this category are high-performance architectural luminaires
designed to provide indirect illumination by reflecting or redirecting light off of the
ceiling.
•	This category does not address luminaires used to accent the cove and/or provide low
(i.e., "mood") lighting levels, an application that does not require the light output and
	optical control specified in this category.	
Application Requirements
Minimum Light Output
Luminaire shall deliver a minimum of 400 lumens (initial) per lineal foot. The
light output requirement is calculated by the following equation:
Measured Fixture Length (inches)
	x 400 = Minimum Required Light Output (lumens)
12
Note: The equation applies to all luminaire configurations. For rectangular
geometries the "measured fixture length" is the longest dimension of the fixture.
For circular geometries the "measured fixture length" is the diameter. For
linear track luminaires the "measured fixture length" is the track length.
Zonal Lumen Density
Requirement
Luminaire shall deliver a minimum of 60% of total lumens within the 100°-150°
zone (asymmetrically).
Minimum Luminaire
Efficacy
56 Im/W
Allowable CCTs
2700 K, 3000 K, 3500 K, 4000 K, 4500 K, 5000 K
Circular or square parking garage luminaires
Application Requirements
Minimum Light Output
Luminaire shall deliver a minimum of 4,000 lumens (initial).
Zonal Lumen Density
Requirement
Luminaire shall deliver a majority of total lumens (minimum 20% of total) in the
60°- 70° zone, with the majority of remaining lumens (minimum 15% of total)
delivered in the 70°- 80° zone (bilaterally symmetrical).
Minimum Luminaire
Efficacy
56 Im/W
ENERGY STAR Program Requirements for SSL Luminaires - Category "A" Additions
August XX, 2008

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Bollards
Comments on bollard specifications:
The minimum light output and zonal lumen density requirements in this category are intended to
provide illumination comparable to existing technologies, while addressing glare issues.
Specifically, the zonal lumen density requirements address the following:
•	The light in the 50°- 70° zone lights the ground plane
•	The restriction in the 80°- 90° zone is intended to limit or prevent glare
•	The light in the 90°-110° zone allows some uplight when bollards are mounted near
buildings (typical in practice)
•	The restriction over 110° is intended to prevent skyglow
Application Requirements
Minimum Light Output
Luminaire shall deliver a minimum of 500 lumens (initial).
Zonal Lumen Density
Requirement
Luminaire shall deliver the majority of total lumens within the following zones:
•	> 40% of total lumens within the 50°- 70° zone
•	< 10% of total lumens within the 80°- 90° zone
•	< 15% of total lumens in the 90°-110° zone
•	no light emitted over 110°
Minimum Luminaire
Efficacy
26 Im/W
Circular or square wall wash luminaires
Application Requirements
Minimum Light Output
Luminaire shall deliver a minimum of 575 lumens (initial).
Zonal Lumen Density
Requirement
Luminaire shall deliver a minimum of 50% of total lumens within the 20°- 40°
zone (asymmetrical).
Minimum Luminaire
Efficacy
30 Im/W
Allowable CCTs
2700 K, 3000 K, 3500 K, 4000 K
Ceiling-mounted luminaires with diffusers
Comments on Ceiling-mounted luminaires with diffusers:
• Given the broad range of form factors and photometric distributions for existing
products in this category, a Zonal Lumen Density Requirement is not proposed at this
time.
Application Requirements
Minimum Light Output
Luminaire shall deliver a minimum of 750 lumens (initial).
Minimum Luminaire
Efficacy
30 Im/W
Allowable CCTs
2700 K, 3000 K and 3500 K for Residential products
ENERGY STAR Program Requirements for SSL Luminaires - Category "A" Additions	4
August XX, 2008

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Surface-Mounted Luminaires with Directional Head(s)
Application Requirements
Minimum Light Output
Luminaire shall deliver a minimum of 250 lumens (initial) per head.
Zonal Lumen Density
Requirement
Luminaire shall deliver a minimum of 85% within the 0-90° zone (bilaterally
symmetrical).
Minimum Luminaire
Efficacy
30 Im/W
Allowable CCTs
2700 K, 3000 K and 3500 K for Residential products
ENERGY STAR Program Requirements for SSL Luminaires - Category "A" Additions
August XX, 2008

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