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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Case 1. Single Family
Option 1. Indoor Lighting (1.5 points)
Install high-efficacy lighting. Meet or exceed the requirements for lighting power density for hard-wired fixtures, as listed in Table 1.Table 1. Points for reducing lighting power density
Maximum lighting power density (W/sf) |
Points |
|
|---|---|---|
W/sq. ft. |
W/sq. m. |
|
0.72 |
7.7 |
0.5 |
0.60 |
6.5 |
1 |
0.48 |
5.2 |
1.5 |
- Use a lighting power density of 1.1 W per square foot (11.8 W per square meter) for rooms or portions of any rooms with less than the required hardwired lighting.
- Account for all hard-wired fixtures in the home, including the garage and exterior lights (whether affixed to the home or freestanding).
- Do not include portable table and floor lamps, appliance lights, or landscape lights.
- Include step lights and undercabinet and cabinet lights.
- For standard incandescent (a-line medium screw base) bulbs, assume 64 watts per socket.
- For LED and Xenon lights, use actual wattages.
- For fluorescent lighting, calculate wattage based on the assumptions in Table 2 or use the actual wattages installed.
Table 2. Assumptions for bulb wattage
|
Watts |
|---|---|
CFL twist |
14 |
CFL Covered |
14 |
CFL Candelabra |
9 |
Incandescent |
64 |
Incandescent Candelabra |
40 |
MR16 |
40 |
AND/OR
Option 2. Exterior Lighting (0.5 point)
All exterior lighting must be Dark Sky qualified and have motion sensor controls, integrative photovoltaic cells, photosensors, or astronomic time-clock operation. The following lighting is exempt: emergency lighting, lighting required by code for health and safety purposes, and lighting used for eye adaptation near covered vehicle entrances or exits.Case 2. Multifamily
Option 1. Indoor Lighting (1.5 points)
Install high-efficacy lighting and/or lighting controls that achieve a reduction from the ENERGY STAR baseline. Complete the ENERGY STAR multifamily midrise worksheet for interior lighting.Table 3. Points for reducing interior lighting from baseline
Percentage reduction |
Points |
|---|---|
35% |
0.5 |
45% |
1 |
55% |
1.5 |
AND/OR
Option 2. Exterior Lighting (0.5 point)
Complete the ENERGY STAR multifamily midrise worksheet for exterior lighting. Reduce exterior lighting wattage by at least 50%. All exterior lighting must be Dark Sky qualified.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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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Case 1. Single Family
Option 1. Indoor Lighting (1.5 points)
Install high-efficacy lighting. Meet or exceed the requirements for lighting power density for hard-wired fixtures, as listed in Table 1.Table 1. Points for reducing lighting power density
Maximum lighting power density (W/sf) |
Points |
|
|---|---|---|
W/sq. ft. |
W/sq. m. |
|
0.72 |
7.7 |
0.5 |
0.60 |
6.5 |
1 |
0.48 |
5.2 |
1.5 |
- Use a lighting power density of 1.1 W per square foot (11.8 W per square meter) for rooms or portions of any rooms with less than the required hardwired lighting.
- Account for all hard-wired fixtures in the home, including the garage and exterior lights (whether affixed to the home or freestanding).
- Do not include portable table and floor lamps, appliance lights, or landscape lights.
- Include step lights and undercabinet and cabinet lights.
- For standard incandescent (a-line medium screw base) bulbs, assume 64 watts per socket.
- For LED and Xenon lights, use actual wattages.
- For fluorescent lighting, calculate wattage based on the assumptions in Table 2 or use the actual wattages installed.
Table 2. Assumptions for bulb wattage
|
Watts |
|---|---|
CFL twist |
14 |
CFL Covered |
14 |
CFL Candelabra |
9 |
Incandescent |
64 |
Incandescent Candelabra |
40 |
MR16 |
40 |
AND/OR
Option 2. Exterior Lighting (0.5 point)
All exterior lighting must be Dark Sky qualified and have motion sensor controls, integrative photovoltaic cells, photosensors, or astronomic time-clock operation. The following lighting is exempt: emergency lighting, lighting required by code for health and safety purposes, and lighting used for eye adaptation near covered vehicle entrances or exits.Case 2. Multifamily
Option 1. Indoor Lighting (1.5 points)
Install high-efficacy lighting and/or lighting controls that achieve a reduction from the ENERGY STAR baseline. Complete the ENERGY STAR multifamily midrise worksheet for interior lighting.Table 3. Points for reducing interior lighting from baseline
Percentage reduction |
Points |
|---|---|
35% |
0.5 |
45% |
1 |
55% |
1.5 |
AND/OR
