LEED v4
Retail – New Construction
Indoor Environmental Quality

Interior lighting

Retail-NC-v4 EQc6: Interior lighting

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Credit language

USGBC logo

© Copyright U.S. Green Building Council, Inc. All rights reserved.

Requirements

For at least 90% of the individual occupant spaces in office and administrative areas, provide individual lighting controls.

In sales areas, provide controls that can reduce the ambient light levels to a midlevel (30% to 70% of the maximum illumination level not including daylight contributions).

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Frequently asked questions

How do I calculate an illuminance ratio?

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Is Option 1 achievable for open office spaces?

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Where do I find the CRI of a lamp?

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What lighting controls are required for a conference room with a presentation screen?

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Do task lights need to meet all the lighting quality requirements?

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Can I use recessed fixtures and still meet Strategy D?

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How limiting are the reflectance values in the finish requirements?

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For Option 1, we would like occupants to be able to control lighting in their area from smartphones, tablets, or computers; we plan to eliminate physical switches altogether. Would this meet the intent of Option 1?

The answer to this question is available to LEEDuser premium members. Start a free trial »

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Daylight is an important strategy in my project. How do I meet this credit as well as the daylighting credit?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Do operable shades count as lighting controls?

The answer to this question is available to LEEDuser premium members. Start a free trial »

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Does having multi-circuit lighting count as providing multiple lighting levels?

The answer to this question is available to LEEDuser premium members. Start a free trial »

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See all forum discussions about this credit »

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Cost estimates for this credit

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Addenda

29/07/2022– Updated: 01/09/2022
Reference Guide Correction
Description of change:
100002553

Under Indoor Environmental Quality Overview, Tricky Spaces:
Add a new section as follows:
"Museums
• Exceptions to Interior Lighting, Daylight, and Quality Views are permitted. See the Further Explanation, Project Type Variations sections in Interior Lighting, Daylight, and Quality Views."

Under Interior Lighting, Further Explanation, Project Type Variations
Add a new section as follows:
"Museums
• Museum exhibit and other collection spaces may be excluded from the interior lighting requirements."

Under Daylight, Further Explanation, Project Type Variations
Add a new section as follows:
"Museums
• Museum exhibit and other collection spaces may be excluded from the daylight requirements."

Under Quality Views, Further Explanation, Project Type Variations
Add a new section as follows:
"Museums
• Museum exhibit and other collection spaces may be excluded from the views requirements."

Inquiry:
Ruling:
Campus Applicable
No
Internationally Applicable:
No
08/07/2017– Updated: 28/07/2017
Reference Guide Correction
Description of change:
interior lighting retail RG

Revise Retail guidance to "Follow the step-by-step guidance for Option 1 for office and administration areas. In addition, provide at least three lighting levels: on, off, and a midlevel in sales areas."

Inquiry:
Ruling:
Campus Applicable
No
Internationally Applicable:
No
01/07/2014– Updated: 14/02/2015
Reference Guide Correction
Description of change:
100001845

Table 1, modify item D so it reads "25% connected lighting load for regularly occupied spaces."

Inquiry:
Ruling:
Campus Applicable
No
Internationally Applicable:
No
01/10/2014– Updated: 14/02/2015
Form Update
Description of change:
5000013

Revised summary for C. Lamp Life from "Connected lighting load with rated life greater than 24,000 hours (or L70 for LED sources)" to "Connected lighting load with rated life of at least 24,000 hours (or L70 for LED sources)"

Revised errors in the ratio calculations for G. Surface Illuminance Ratio: Wall to Work Surface and H. Surface Illuminance Ratio: Ceiling to Work Surface

Inquiry:
Ruling:
Campus Applicable
No
Internationally Applicable:
No
01/10/2014– Updated: 14/02/2015
Reference Guide Correction
Description of change:
100001933

Revise Option 2, strategy H so it reads: For at least 75% of the regularly occupied floor area, meet a ratio of average ceiling illuminance (excluding fenestration) to work surface illuminance that does not exceed 1:10. Must also meet strategy E, strategy F, or demonstrate area-weighted surface reflectance of at least 85% for ceilings.

Inquiry:
Ruling:
Campus Applicable
No
Internationally Applicable:
Yes
01/10/2014– Updated: 14/02/2015
Rating System Correction
Description of change:
100001933

Revise Option 2, strategy H so it reads: For at least 75% of the regularly occupied floor area, meet a ratio of average ceiling illuminance (excluding fenestration) to work surface illuminance that does not exceed 1:10. Must also meet strategy E, strategy F, or demonstrate area-weighted surface reflectance of at least 85% for ceilings.

Inquiry:
Ruling:
Campus Applicable
No
Internationally Applicable:
Yes
See all forum discussions about this credit »

LEEDuser overview

Frank advice from LEED experts

LEED is changing all the time, and every project is unique. Even seasoned professionals can miss a critical detail and lose a credit or even a prerequisite at the last minute. Our expert advice guides our LEEDuser Premium members and saves you valuable time.

For full access, sign up now for LEEDuser Premium

Already a premium member? Log in now

Credit language

USGBC logo

© Copyright U.S. Green Building Council, Inc. All rights reserved.

Requirements

For at least 90% of the individual occupant spaces in office and administrative areas, provide individual lighting controls.

In sales areas, provide controls that can reduce the ambient light levels to a midlevel (30% to 70% of the maximum illumination level not including daylight contributions).

See all forum discussions about this credit »

Frequently asked questions

How do I calculate an illuminance ratio?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Is Option 1 achievable for open office spaces?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Where do I find the CRI of a lamp?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

What lighting controls are required for a conference room with a presentation screen?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Do task lights need to meet all the lighting quality requirements?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Can I use recessed fixtures and still meet Strategy D?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

How limiting are the reflectance values in the finish requirements?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

For Option 1, we would like occupants to be able to control lighting in their area from smartphones, tablets, or computers; we plan to eliminate physical switches altogether. Would this meet the intent of Option 1?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Daylight is an important strategy in my project. How do I meet this credit as well as the daylighting credit?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Do operable shades count as lighting controls?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Does having multi-circuit lighting count as providing multiple lighting levels?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

See all forum discussions about this credit »

Documentation toolkit

The motherlode of cheat sheets

LEEDuser’s Documentation Toolkit is loaded with calculators to help assess credit compliance, tracking spreadsheets for materials, sample templates to help guide your narratives and LEED Online submissions, and examples of actual submissions from certified LEED projects for you to check your work against. To get your plaque, start with the right toolkit.

For full access, sign up now for LEEDuser Premium

Already a premium member? Log in now


Frequently asked questions

How do I calculate an illuminance ratio?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Is Option 1 achievable for open office spaces?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Where do I find the CRI of a lamp?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

What lighting controls are required for a conference room with a presentation screen?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Do task lights need to meet all the lighting quality requirements?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Can I use recessed fixtures and still meet Strategy D?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

How limiting are the reflectance values in the finish requirements?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

For Option 1, we would like occupants to be able to control lighting in their area from smartphones, tablets, or computers; we plan to eliminate physical switches altogether. Would this meet the intent of Option 1?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Daylight is an important strategy in my project. How do I meet this credit as well as the daylighting credit?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Do operable shades count as lighting controls?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Does having multi-circuit lighting count as providing multiple lighting levels?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

See all forum discussions about this credit »

Addenda

29/07/2022– Updated: 01/09/2022
Reference Guide Correction
Description of change:
100002553

Under Indoor Environmental Quality Overview, Tricky Spaces:
Add a new section as follows:
"Museums
• Exceptions to Interior Lighting, Daylight, and Quality Views are permitted. See the Further Explanation, Project Type Variations sections in Interior Lighting, Daylight, and Quality Views."

Under Interior Lighting, Further Explanation, Project Type Variations
Add a new section as follows:
"Museums
• Museum exhibit and other collection spaces may be excluded from the interior lighting requirements."

Under Daylight, Further Explanation, Project Type Variations
Add a new section as follows:
"Museums
• Museum exhibit and other collection spaces may be excluded from the daylight requirements."

Under Quality Views, Further Explanation, Project Type Variations
Add a new section as follows:
"Museums
• Museum exhibit and other collection spaces may be excluded from the views requirements."

Inquiry:
Ruling:
Campus Applicable
No
Internationally Applicable:
No
08/07/2017– Updated: 28/07/2017
Reference Guide Correction
Description of change:
interior lighting retail RG

Revise Retail guidance to "Follow the step-by-step guidance for Option 1 for office and administration areas. In addition, provide at least three lighting levels: on, off, and a midlevel in sales areas."

Inquiry:
Ruling:
Campus Applicable
No
Internationally Applicable:
No
01/07/2014– Updated: 14/02/2015
Reference Guide Correction
Description of change:
100001845

Table 1, modify item D so it reads "25% connected lighting load for regularly occupied spaces."

Inquiry:
Ruling:
Campus Applicable
No
Internationally Applicable:
No
01/10/2014– Updated: 14/02/2015
Form Update
Description of change:
5000013

Revised summary for C. Lamp Life from "Connected lighting load with rated life greater than 24,000 hours (or L70 for LED sources)" to "Connected lighting load with rated life of at least 24,000 hours (or L70 for LED sources)"

Revised errors in the ratio calculations for G. Surface Illuminance Ratio: Wall to Work Surface and H. Surface Illuminance Ratio: Ceiling to Work Surface

Inquiry:
Ruling:
Campus Applicable
No
Internationally Applicable:
No
01/10/2014– Updated: 14/02/2015
Reference Guide Correction
Description of change:
100001933

Revise Option 2, strategy H so it reads: For at least 75% of the regularly occupied floor area, meet a ratio of average ceiling illuminance (excluding fenestration) to work surface illuminance that does not exceed 1:10. Must also meet strategy E, strategy F, or demonstrate area-weighted surface reflectance of at least 85% for ceilings.

Inquiry:
Ruling:
Campus Applicable
No
Internationally Applicable:
Yes
01/10/2014– Updated: 14/02/2015
Rating System Correction
Description of change:
100001933

Revise Option 2, strategy H so it reads: For at least 75% of the regularly occupied floor area, meet a ratio of average ceiling illuminance (excluding fenestration) to work surface illuminance that does not exceed 1:10. Must also meet strategy E, strategy F, or demonstrate area-weighted surface reflectance of at least 85% for ceilings.

Inquiry:
Ruling:
Campus Applicable
No
Internationally Applicable:
Yes
See all forum discussions about this credit »