updated formula so that lamp calculations are based on a weighted average.
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View the LEED v4.1 version of this credit »
View the LEED v4.1 version of this credit »
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Barry Giles
BuildingWise LLC
Founder & CEO, LEED Fellow, BREEAM Fellow
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Credit language
© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Establishment
None.Performance
Implement the lighting purchasing plan that specifies an overall building average of 70 picograms of mercury per lumen-hour or less for all mercury-containing lamps purchased for the building and associated grounds within the project boundary. Include lamps for both indoor and outdoor fixtures, as well as both hard-wired and portable fixtures. Lamps containing no mercury may be counted only if their energy efficiency at least equals that of their mercury-containing counterparts. See all forum discussions about this credit »What does it cost?
Cost estimates for this credit
On each BD+C v4 credit, LEEDuser offers the wisdom of a team of architects, engineers, cost estimators, and LEED experts with hundreds of LEED projects between then. They analyzed the sustainable design strategies associated with each LEED credit, but also to assign actual costs to those strategies.
Our tab contains overall cost guidance, notes on what “soft costs” to expect, and a strategy-by-strategy breakdown of what to consider and what it might cost, in percentage premiums, actual costs, or both.
This information is also available in a full PDF download in The Cost of LEED v4 report.
Learn more about The Cost of LEED v4 »Frequently asked questions
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Is there a minimum number of lamps that need to be purchased during the performance period in order to achieve this 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.) |
We purchase lamps for some of our tenants, but not all of them. Can lamps for these tenant spaces be excluded?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.) |
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Our building average is over 70 picograms per lumen hour for installed lamps. Do we have to replace lamps before they’ve reached the end of their useful life in order to reach the credit threshold? 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.) |
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How should I account for LED purchases? Do I have to show that the LEDs are as energy efficient as similar mercury-containing lamps? 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.) |
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Do lamps purchased for task lighting need to be included in my calculations? 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.) |
|
I can’t find mean lumens on the manufacturer documentation. What should I do? 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.) |
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The project building includes a significant amount of process lighting (i.e. sports arena lighting or studio lighting). Do these lamps need to be included? 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.) |
Addenda
10/1/2016 – Updated: 9/28/2016
Form Update
Description of change:
Campus Applicable
No
Internationally Applicable:
Yes
10/1/2015 – Updated: 1/21/2016
Reference Guide Correction
Description of change:
Remove the first sentence from the first bullet under Step 5 :"Lamps must be purchased during the performance period for project teams to earn this credit."
Update "Required Documentation" section row three with the following: "List of purchased lamps, verifying compliance with the plan, or confirmation that no lamps were needed"
Update "Required Documentation" section row three with the following: "List of purchased lamps, verifying compliance with the plan, or confirmation that no lamps were needed"
Campus Applicable
No
Internationally Applicable:
Yes
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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Establishment
None.Performance
Implement the lighting purchasing plan that specifies an overall building average of 70 picograms of mercury per lumen-hour or less for all mercury-containing lamps purchased for the building and associated grounds within the project boundary. Include lamps for both indoor and outdoor fixtures, as well as both hard-wired and portable fixtures. Lamps containing no mercury may be counted only if their energy efficiency at least equals that of their mercury-containing counterparts.In the end, LEED is all about documentation. LEEDuser’s Documentation Toolkit, for premium members only, saves you time and helps you avoid mistakes with:
- Calculators to help assess credit compliance.
- Tracking spreadsheets for materials purchases.
- Spreadsheets and forms to give to subs and other team members.
- Guidance documents on arcane LEED issues.
- Sample templates to help guide your narratives and LEED Online submissions.
- Examples of actual submissions from certified LEED projects.
|
Is there a minimum number of lamps that need to be purchased during the performance period in order to achieve this 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.) |
We purchase lamps for some of our tenants, but not all of them. Can lamps for these tenant spaces be excluded?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.) |
|
Our building average is over 70 picograms per lumen hour for installed lamps. Do we have to replace lamps before they’ve reached the end of their useful life in order to reach the credit threshold? 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 should I account for LED purchases? Do I have to show that the LEDs are as energy efficient as similar mercury-containing lamps? 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 lamps purchased for task lighting need to be included in my calculations? 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.) |
|
I can’t find mean lumens on the manufacturer documentation. What should I do? 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.) |
|
The project building includes a significant amount of process lighting (i.e. sports arena lighting or studio lighting). Do these lamps need to be included? 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.) |
10/1/2016 – Updated: 9/28/2016
Form Update
Description of change:
updated formula so that lamp calculations are based on a weighted average.
Campus Applicable
No
Internationally Applicable:
Yes
10/1/2015 – Updated: 1/21/2016
Reference Guide Correction
Description of change:
Remove the first sentence from the first bullet under Step 5 :"Lamps must be purchased during the performance period for project teams to earn this credit."
Update "Required Documentation" section row three with the following: "List of purchased lamps, verifying compliance with the plan, or confirmation that no lamps were needed"
Update "Required Documentation" section row three with the following: "List of purchased lamps, verifying compliance with the plan, or confirmation that no lamps were needed"
Campus Applicable
No
Internationally Applicable:
Yes
LEEDuser expert
Barry Giles
BuildingWise LLC
Founder & CEO, LEED Fellow, BREEAM Fellow
