If you need to exclude 10% of the floor area in a multi-tenant building from your initial lamp inventory, you are still only required to cover 90% of the total number of inventoried lamps in your lamp purchasing plan.

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If you need to exclude 10% of the floor area in a multi-tenant building from your initial lamp inventory, you are still only required to cover 90% of the total number of inventoried lamps in your lamp purchasing plan.

Work with building tenants to obtain actual lamp data for each of their spaces. The project team may exempt up to 10% of the building floor area if the tenants that use that space are not willing or able to share information about currently installed lamp

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Work with building tenants to obtain actual lamp data for each of their spaces. The project team may exempt up to 10% of the building floor area if the tenants that use that space are not willing or able to share information about currently installed lamps.

Reducing the wattage of a lamp (for instance, going from a 32-watt T-8 fluorescent tube to a 28-watt T-8) will typically result in mercury reductions as well as improved energy efficiency. If it is economically feasible to retrofit a portion or all of the

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Reducing the wattage of a lamp (for instance, going from a 32-watt T-8 fluorescent tube to a 28-watt T-8) will typically result in mercury reductions as well as improved energy efficiency. If it is economically feasible to retrofit a portion or all of the lamps and ballasts, those changes may make this credit more achievable. In many cases, such as this example, “relamping” can be done without “reballasting.”

The LEED Submittal Template asks for lamp mercury content in milligrams, but in some instances, manufacturers may list the mercury content for a lamp in different units such as picograms. Be sure to verify the unit of measurement and convert the amount of

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The LEED Submittal Template asks for lamp mercury content in milligrams, but in some instances, manufacturers may list the mercury content for a lamp in different units such as picograms. Be sure to verify the unit of measurement and convert the amount of mercury to milligrams if necessary before recording the data in the Submittal Template. See attached spreadsheet for help with this conversion.

Swapping out all existing non-compliant lamps before the end of their useful lives is not the point of the purchasing plan and credit. Instead, the project team should replace lamps over time with credit-compliant options identified in the purchasing plan

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Swapping out all existing non-compliant lamps before the end of their useful lives is not the point of the purchasing plan and credit. Instead, the project team should replace lamps over time with credit-compliant options identified in the purchasing plan.  Although the lamp inventory needs to cover every lamp in the building and on the associated grounds, the purchasing plan only needs to cover 90% of the lamps, allowing you to exclude 10% of the lamps in order to accommodate unusual fixture or lamp types.

Screw-base CFLs that meet voluntary NEMA guidelines may be excluded from the purchasing plan, because the credit encourages their use instead of less-efficient incandescent bulbs.

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Screw-base CFLs that meet voluntary NEMA guidelines may be excluded from the purchasing plan, because the credit encourages their use instead of less-efficient incandescent bulbs.

If any mercury-free lamps are identified in the purchasing plan, provide manufacturer product information that the lamp is as energy-efficient as its mercury-containing counterpart.

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If any mercury-free lamps are identified in the purchasing plan, provide manufacturer product information that the lamp is as energy-efficient as its mercury-containing counterpart.

You can easily look up product data for a lamp by using the manufacturer website and the lamp’s NAED code—a five or six digit code that can be found on product packing, receipts, or shipping manifests.

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You can easily look up product data for a lamp by using the manufacturer website and the lamp’s NAED code—a five or six digit code that can be found on product packing, receipts, or shipping manifests.

Create a lamp purchasing plan that specifies a maximum average mercury content of no more than 90 picograms per lumen-hour for at least 90% of the lamps in the project building and associated grounds. Identify low-mercury lamps that will work with existin

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Create a lamp purchasing plan that specifies a maximum average mercury content of no more than 90 picograms per lumen-hour for at least 90% of the lamps in the project building and associated grounds. Identify low-mercury lamps that will work with existing fixtures and ballasts when possible, and be sure to provide appropriate illumination levels and quality. Record the following manufacturer data for each lamp entered in the  purchasing plan:

Rated average life (hours)
Mean Light Output (lumens)
Mercury content (milligrams)

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