Log in
LEED v4
Hospitality – NC
Energy and Atmosphere
Optimize energy performance

LEED CREDIT

Hospitality-NC-v4 EAc2: Optimize Energy Performance 1-18 points

LEEDuser’s viewpoint

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.

Credit language

USGBC logo

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

Intent

To achieve increasing levels of energy performance beyond the prerequisite standard to reduce environmental and economic harms associated with excessive energy use.

Requirements

Establish an energy performance target no later than the schematic design phase. The target must be established as kBtu per square foot-year (kWh per square meter-year) of source energy use.

Choose one of the options below.

Option 1. Whole-building energy simulation (1–18 points except Schools and Healthcare, 1–16 points Schools, 1–20 points Healthcare)

Analyze efficiency measures during the design process and account for the results in design decision making. Use energy simulation of efficiency opportunities, past energy simulation analyses for similar buildings, or published data (e.g., Advanced Energy Design Guides) from analyses for similar buildings.

Analyze efficiency measures, focusing on load reduction and HVAC-related strategies (passive measures are acceptable) appropriate for the facility. Project potential energy savings and holistic project cost implications related to all affected systems.

Project teams pursuing the Integrative Process credit must complete the basic energy analysis for that credit before conducting the energy simulation.

Follow the criteria in EA Prerequisite Minimum Energy Performance to demonstrate a percentage improvement in the proposed building performance rating compared with the baseline. Points are awarded according to Table 1.

Table 1. Points for percentage improvement in energy performance

New Construction

 

Major Renovation

 

Core and Shell

Points (except Schools, Healthcare)

Points Healthcare

Points Schools

6%

4%

3%

1

3

1

8%

6%

5%

2

4

2

10%

8%

7%

3

5

3

12%

10%

9%

4

6

4

14%

12%

11%

5

7

5

16%

14%

13%

6

8

6

18%

16%

15%

7

9

7

20%

18%

17%

8

10

8

22%

20%

19%

9

11

9

24%

22%

21%

10

12

10

26%

24%

23%

11

13

11

29%

27%

26%

12

14

12

32%

30%

29%

13

15

13

35%

33%

32%

14

16

14

38%

36%

35%

15

17

15

42%

40%

39%

16

18

16

46%

44%

43%

17

19

-

50%

48%

47%

18

20

-

OR

Option 2. Prescriptive compliance: ASHRAE Advanced Energy Design Guide (1–6 points)

To be eligible for Option 2, projects must use Option 2 in EA Prerequisite Minimum Energy Performance.

Implement and document compliance with the applicable recommendations and standards in Chapter 4, Design Strategies and Recommendations by Climate Zone, for the appropriate ASHRAE 50% Advanced Energy Design Guide and climate zone. For projects outside the U.S., consult ASHRAE/ASHRAE/IESNA Standard 90.1–2010, Appendixes B and D, to determine the appropriate climate zone.

ASHRAE 50% Advanced Energy Design Guide for Small to Medium Office Buildings
  • Building envelope, opaque: roofs, walls, floors, slabs, doors, and continuous air barriers (1 point)
  • Building envelope, glazing: vertical fenestration (1 point)
  • Interior lighting, including daylighting and interior finishes (1 point)
  • Exterior lighting (1 point)
  • Plug loads, including equipment and controls (1 point)
ASHRAE 50% Advanced Energy Design Guide for Medium to Large Box Retail Buildings
  • Building envelope, opaque: roofs, walls, floors, slabs, doors, and vestibules (1 point)
  • Building envelope, glazing: fenestration - all orientations (1 point)
  • Interior lighting, excluding lighting power density for sales floor (1 point)
  • Additional interior lighting for sales floor (1 point)
  • Exterior lighting (1 point)
  • Plug loads, including equipment choices and controls (1 point)
ASHRAE 50% Advanced Energy Design Guide for K–12 School Buildings
  • Building envelope, opaque: roofs, walls, floors, slabs, and doors (1 point)
  • Building envelope, glazing: vertical fenestration (1 point)
  • Interior lighting, including daylighting and interior finishes (1 point)
  • Exterior lighting (1 point)
  • Plug loads, including equipment choices, controls, and kitchen equipment (1 point)
ASHRAE 50% Advanced Energy Design Guide for Large Hospitals
  • Building envelope, opaque: roofs, walls, floors, slabs, doors, vestibules, and continuous air barriers (1 point)
  • Building envelope, glazing: vertical fenestration (1 point)
  • Interior lighting, including daylighting (form or nonform driven) and interior finishes (1 point)
  • Exterior lighting (1 point)
  • Plug loads, including equipment choices, controls, and kitchen equipment (1 point)

Pilot ACPs Available

The following pilot alternative compliance path is available for this credit. See the pilot credit library for more information.

EApc95: Alternative Energy Performance Metric ACP

EApc107 - Energy performance metering path

EApc111: Alternative Performance Rating Method

EApc120: District Energy

[view:embed_resource=page_1=7489432]
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

The energy cost offset from onsite renewable energy cannot be used to demonstrate compliance with the prerequisite. Can this cost offset still be credited to the proposed energy cost savings for 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.)

See all forum discussions about this credit »

Addenda

11/9/2020Updated: 12/7/2020
Regional ACP
Description of change:
See the Resource Library for full ACP requirements and documentation.
Campus Applicable
No
Internationally Applicable:
No
7/1/2014Updated: 3/29/2018
Regional ACP
Description of change:
Add the following as a USGBC-approved equivalent standard for projects outside the U.S.

"Projects in Canada may instead demonstrate a percentage improvement in the proposed building performance rating compared with the baseline according to the National Energy Code for Buildings (NECB) 2011. The same percentage improvement in energy performance is required to meet the Prerequisite, and the same points for percentage improvement in energy performance are applicable for the Credit.

The following conditions (where applicable) must be met. Note that unless otherwise noted, CanQUEST (the Canadian energy modelling software based on eQUEST that performs NECB 2011 compliance runs) does not implement these conditions correctly and would require corresponding modifications to the Reference case.

1. Comply with mandatory requirements of ASHRAE 90.1-2010
ASHRAE 90.1-2010 mandatory requirements must be met, in addition to the performance path limitations referenced in the NECB 2011 Sections 3.4.1.2, 5.4.1.2 and 6.4.1.2. In cases where ASHRAE and the NECBC reference requirements concerning the same item, the more stringent requirement shall be adhered to.

2. Apply fenestration area convention similar to ASHRAE 90.1-2010
Maintain the same FWR (as defined by NECB, including doors) for the Reference as exists in the Proposed Design, up to the prescribed maximum. If the Proposed Design’s FWR exceeds the prescribed FWR, scale down the fenestrations in the Reference case accordingly.

3. Apply skylight area convention similar to ASHRAE 90.1-2010
Maintain the same SRR for the Reference as exists in the Proposed Design, up to the prescribed 5% maximum. If the Proposed Design’s SRR exceeds 5%, scale down the skylights in the Reference case accordingly.

4. Model proposed and reference outside air similar to ASHRAE 90.1-2010
Proposed and reference (baseline) outside air rates shall be modelled as per ASHRAE 90.1 – 2010 (G3.1.2.6).

5. Apply ASHRAE kitchen exhaust demand ventilation requirements
Provide for the same demand ventilation requirements as described in ASHRAE Appendix G3.1.1.d.

6. Apply ASHRAE’s chiller heat recovery requirements
Provide for the same chiller heat recovery requirements as applies to ASHRAE.

7. Apply supply air temperature reset controlled based on warmest zone
Reset the minimum supply air temperature to satisfy the cooling requirements of the warmest zone, as stipulated in NECB Section 5.2.8.8. Note that this control setting is already corrected in CanQUEST for the Reference case.

8. Account for uninsulated structural penetrations if they exceed 2% of net wall area
The 2% allowance may be applied, but based on the net opaque wall area, not the entire building envelope area.

9. Follow ASHRAE/LEED rules for renovations to existing buildings
Model existing components consistent with ASHRAE and LEED provisions.

10. Account for all anticipated energy use in building
Fully account for all energy end-uses in the energy performance modeling."


As of 10/1/16, please note the following clarifications for the ACP language in the LEED credit library:

1. Clarify that the metric is cost.
2. Clarify that CanQUEST does not implement many of the ASHRAE 90.1-2010 conditions.
3. Provide exemptions to a few 90.1 mandatory provisions, which are identified as exempt in the ACP calculator.
4. Provide guidance for projects with district energy systems – see condition #11 in ACP language.
Campus Applicable
No
Internationally Applicable:
Yes
7/2/2018
LEED Interpretation
Inquiry:

Our project is subject to ASHRAE Standard 90.1-2013 for code compliance. To pursue Option 1: Whole Building Simulation, is there a methodology for documenting additional energy performance for LEED v4 projects regulated by ASHRAE Standard 90.1-2013?

Ruling:

Yes, projects applying Option 1: Whole Building Simulation, and regulated by ASHRAE Standard 90.1-2013 may document additional energy performance improvement under LEED v4 EA credit Optimize Energy Performance as described below. The Appendix G modeling method must be used for the LEED submission, even if the Energy Cost Budget method is used to document local code compliance.

Projects may calculate the Equivalent ASHRAE 90.1-2010 Performance improvement as:
Equivalent performance Improvement = % better than ASHRAE 90.1-2013 + Additional Percent Savings

Where Additional Percent Savings is shown in Table 1:

Table 1: Additional Percent Savings for ASHRAE 90.1-2013

Project Type1 Additional Percent Savings
NC-Office 5%
NC-Retail (except restaurant/grocery) 5%
NC-School 6%
NC-Health Care 3%
NC-Restaurant / Grocery 3%
NC-Hospitality 5%
NC-Warehouse 1%
NC-Multifamily 3%
NC-All Other 2%
CS-Office 3%
CS-Retail (except restaurant/grocery) 3%
CS-School 6%
CS-Health Care 1%
CS-Restaurant / Grocery 2%
CS-Hospitality 3%
CS-Warehouse 0%
CS-Multifamily 1%
CS-All Other 1%
CI-Office 3%
CI-Retail (except restaurant/grocery) 4%
CI-School 6%
CI-Health Care 2%
CI-Restaurant / Grocery 3%
CI-Hospitality 4%
CI-Warehouse 0%
CI-Multifamily 1%
CI-All Other 2%

1 Mixed use buildings shall use the weighted average Additional Percent Savings based on the gross enclosed floor area associated with each building type. Unfinished spaces not submitted in the CS rating system shall use the CS values. Data center space must always be considered “All Other”.

Campus Applicable
No
Internationally Applicable:
No
7/2/2018
LEED Interpretation
Inquiry:

Our project is located in California. To pursue Option 1: Whole Building Simulation, is there a methodology for documenting additional energy performance for LEED v4 projects regulated by Title 24-2016?

Ruling:

Project Type1
Additional Percent Savings

NC-Office
7%

NC-Retail (except restaurant/grocery)
8%

NC-School
7%

NC-Health Care
0%

NC-Restaurant/Grocery
0%

NC-Hospitality
8%

NC-Warehouse
0%

NC-Multifamily
8%

NC-All Other
0%

CS-Office
5%

CS-Retail (except restaurant/grocery)
7%

CS-School
5%

CS-Health Care
0%

CS-Restaurant/Grocery
0%

CS-Hospitality
7%

CS-Warehouse
0%

CS-Multifamily
7%

CS-All Other
0%

CI-Office
6%

CI-Retail (except restaurant/grocery)
7%

CI-School
6%

CI-Health Care
0%

CI-Restaurant/Grocery
0%

CI-Hospitality
7%

CI-Warehouse
0%

CI-Multifamily
7%

CI-All Other
0%

Campus Applicable
No
Internationally Applicable:
No
1/25/2019
LEED Interpretation
Inquiry:

Project types and programmatic space types quite often dictate the outcome of the energy simulation model. LEED Rating system adaptations allow adjusted point scales for existing building renovations, Core & Shell projects, and healthcare programmatic space types in recognition that a greater proportion of the energy consumption is either outside of the scope of the project, or more difficult to mitigate within the project scope.

Manufacturing projects served by existing chillers/boilers can model the chilled water and hot water as ‘purchased energy’ however, in this scenario, cannot claim savings between the baseline and proposed. This is identical to major renovations / Core & Shell since such energy related decisions are outside the control of the LEED project owner.

Similar to healthcare projects, manufacturing projects also have large non-regulated energy loads. However, unlike healthcare, manufacturing projects contain limitless varieties of ‘widget makers’ and many (if not all) are proprietary. Healthcare buildings have similar non-regulated energy consuming items. Non-regulated energy consuming items throughout the manufacturing projects do not have such similarities.

Can BD+C projects with more than 50% ASHRAE 90.1 unregulated loads use Minimum energy performance percentage improvements, and an Optimize Energy Performance point scale that matches the percentage improvements and point scale required for Core & Shell projects?

Ruling:

Yes, projects using whole building energy simulation, and documenting unregulated energy cost exceeding 50% of the total proposed building energy cost may use the following BD+C: Core & Shell energy performance improvement thresholds in lieu of the New Construction thresholds.

• Minimum Energy Performance: Demonstrate a 2% improvement in the proposed building performance in accordance with ASHRAE 90.1-2010 Appendix G (or a USGBC-approved equivalent standard).

• Optimize Energy Performance: Use the Core and Shell column of Table 1. Points for percentage improvement in lieu of the New Construction or Major Renovation column.

Provide the LEED Minimum Energy Performance Calculator and an accompanying narrative to justify that unregulated energy cost exceeds 50% of the building’s total proposed energy cost. Refer to the BD+C v4 reference guide definitions of unregulated load and regulated load.

Campus Applicable
No
Internationally Applicable:
Yes
1/10/2020
LEED Interpretation
Inquiry:

Our project is located in California and subject to compliance with Title 24 2019. Title 24 2019 has requirements for lighting power density more stringent than those requirements in ASHRAE 90.1-2010, and unfinished spaces in our project will be subject to the Title 24 2019 requirements.

For LEED credit compliance, our team plans to follow ASHRAE 90.1-2010 modeling. How can we document credit for Title 24 2019 compliant lighting in unfinished spaces?

Ruling:

Building Type*
Unfinished Space Lighting Power Density

Automotive Facility
0.70

Convention Center
0.80

Courthouse
0.80

Dining: Bar Lounge/Leisure
0.75

Dining: Cafeteria/Fast Food
0.70

Dining: Family
0.70

Dormitory
0.61

Exercise Center
0.70

Fire Station
0.71

Gymnasium
0.80

Healthcare Clinic
0.87

Hospital
1.05

Hotel
1.00

Library
0.95

Manufacturing Facility
0.90

Motel
0.88

Motion Picture Theater
0.75

Multifamily
0.60

Museum
1.06

Office
0.72

Parking Garage
0.17

Penitentiary
0.97

Performing Arts Theater
1.10

Police Station
0.96

Post Office
0.8

Religious Building
0.85

Retail: Grocery
1.05

Retail
1.00

School/University
0.72

Sports Arena
0.78

Town Hall
0.85

Transportation
0.60

Warehouse
0.55

Workshop
1.10

Campus Applicable
No
Internationally Applicable:
No
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.

LEEDuser expert

Marcus Sheffer

7group / Energy Opportunities
LEED Fellow

Get the inside scoop

Our editors have written a detailed analysis of nearly every LEED credit, and LEEDuser premium members get full access. We’ll tell you whether the credit is easy to accomplish or better left alone, and we provide insider tips on how to document it successfully.

USGBC logo

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

Intent

To achieve increasing levels of energy performance beyond the prerequisite standard to reduce environmental and economic harms associated with excessive energy use.

Requirements

Establish an energy performance target no later than the schematic design phase. The target must be established as kBtu per square foot-year (kWh per square meter-year) of source energy use.

Choose one of the options below.

Option 1. Whole-building energy simulation (1–18 points except Schools and Healthcare, 1–16 points Schools, 1–20 points Healthcare)

Analyze efficiency measures during the design process and account for the results in design decision making. Use energy simulation of efficiency opportunities, past energy simulation analyses for similar buildings, or published data (e.g., Advanced Energy Design Guides) from analyses for similar buildings.

Analyze efficiency measures, focusing on load reduction and HVAC-related strategies (passive measures are acceptable) appropriate for the facility. Project potential energy savings and holistic project cost implications related to all affected systems.

Project teams pursuing the Integrative Process credit must complete the basic energy analysis for that credit before conducting the energy simulation.

Follow the criteria in EA Prerequisite Minimum Energy Performance to demonstrate a percentage improvement in the proposed building performance rating compared with the baseline. Points are awarded according to Table 1.

Table 1. Points for percentage improvement in energy performance

New Construction

 

Major Renovation

 

Core and Shell

Points (except Schools, Healthcare)

Points Healthcare

Points Schools

6%

4%

3%

1

3

1

8%

6%

5%

2

4

2

10%

8%

7%

3

5

3

12%

10%

9%

4

6

4

14%

12%

11%

5

7

5

16%

14%

13%

6

8

6

18%

16%

15%

7

9

7

20%

18%

17%

8

10

8

22%

20%

19%

9

11

9

24%

22%

21%

10

12

10

26%

24%

23%

11

13

11

29%

27%

26%

12

14

12

32%

30%

29%

13

15

13

35%

33%

32%

14

16

14

38%

36%

35%

15

17

15

42%

40%

39%

16

18

16

46%

44%

43%

17

19

-

50%

48%

47%

18

20

-

OR

Option 2. Prescriptive compliance: ASHRAE Advanced Energy Design Guide (1–6 points)

To be eligible for Option 2, projects must use Option 2 in EA Prerequisite Minimum Energy Performance.

Implement and document compliance with the applicable recommendations and standards in Chapter 4, Design Strategies and Recommendations by Climate Zone, for the appropriate ASHRAE 50% Advanced Energy Design Guide and climate zone. For projects outside the U.S., consult ASHRAE/ASHRAE/IESNA Standard 90.1–2010, Appendixes B and D, to determine the appropriate climate zone.

ASHRAE 50% Advanced Energy Design Guide for Small to Medium Office Buildings
  • Building envelope, opaque: roofs, walls, floors, slabs, doors, and continuous air barriers (1 point)
  • Building envelope, glazing: vertical fenestration (1 point)
  • Interior lighting, including daylighting and interior finishes (1 point)
  • Exterior lighting (1 point)
  • Plug loads, including equipment and controls (1 point)
ASHRAE 50% Advanced Energy Design Guide for Medium to Large Box Retail Buildings
  • Building envelope, opaque: roofs, walls, floors, slabs, doors, and vestibules (1 point)
  • Building envelope, glazing: fenestration - all orientations (1 point)
  • Interior lighting, excluding lighting power density for sales floor (1 point)
  • Additional interior lighting for sales floor (1 point)
  • Exterior lighting (1 point)
  • Plug loads, including equipment choices and controls (1 point)
ASHRAE 50% Advanced Energy Design Guide for K–12 School Buildings
  • Building envelope, opaque: roofs, walls, floors, slabs, and doors (1 point)
  • Building envelope, glazing: vertical fenestration (1 point)
  • Interior lighting, including daylighting and interior finishes (1 point)
  • Exterior lighting (1 point)
  • Plug loads, including equipment choices, controls, and kitchen equipment (1 point)
ASHRAE 50% Advanced Energy Design Guide for Large Hospitals
  • Building envelope, opaque: roofs, walls, floors, slabs, doors, vestibules, and continuous air barriers (1 point)
  • Building envelope, glazing: vertical fenestration (1 point)
  • Interior lighting, including daylighting (form or nonform driven) and interior finishes (1 point)
  • Exterior lighting (1 point)
  • Plug loads, including equipment choices, controls, and kitchen equipment (1 point)

Pilot ACPs Available

The following pilot alternative compliance path is available for this credit. See the pilot credit library for more information.

EApc95: Alternative Energy Performance Metric ACP

EApc107 - Energy performance metering path

EApc111: Alternative Performance Rating Method

EApc120: District Energy

[view:embed_resource=page_1=7489432]

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 »

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.

The energy cost offset from onsite renewable energy cannot be used to demonstrate compliance with the prerequisite. Can this cost offset still be credited to the proposed energy cost savings for 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.)

11/9/2020Updated: 12/7/2020
Regional ACP
Description of change:
See the Resource Library for full ACP requirements and documentation.
Campus Applicable
No
Internationally Applicable:
No
7/1/2014Updated: 3/29/2018
Regional ACP
Description of change:
Add the following as a USGBC-approved equivalent standard for projects outside the U.S.

"Projects in Canada may instead demonstrate a percentage improvement in the proposed building performance rating compared with the baseline according to the National Energy Code for Buildings (NECB) 2011. The same percentage improvement in energy performance is required to meet the Prerequisite, and the same points for percentage improvement in energy performance are applicable for the Credit.

The following conditions (where applicable) must be met. Note that unless otherwise noted, CanQUEST (the Canadian energy modelling software based on eQUEST that performs NECB 2011 compliance runs) does not implement these conditions correctly and would require corresponding modifications to the Reference case.

1. Comply with mandatory requirements of ASHRAE 90.1-2010
ASHRAE 90.1-2010 mandatory requirements must be met, in addition to the performance path limitations referenced in the NECB 2011 Sections 3.4.1.2, 5.4.1.2 and 6.4.1.2. In cases where ASHRAE and the NECBC reference requirements concerning the same item, the more stringent requirement shall be adhered to.

2. Apply fenestration area convention similar to ASHRAE 90.1-2010
Maintain the same FWR (as defined by NECB, including doors) for the Reference as exists in the Proposed Design, up to the prescribed maximum. If the Proposed Design’s FWR exceeds the prescribed FWR, scale down the fenestrations in the Reference case accordingly.

3. Apply skylight area convention similar to ASHRAE 90.1-2010
Maintain the same SRR for the Reference as exists in the Proposed Design, up to the prescribed 5% maximum. If the Proposed Design’s SRR exceeds 5%, scale down the skylights in the Reference case accordingly.

4. Model proposed and reference outside air similar to ASHRAE 90.1-2010
Proposed and reference (baseline) outside air rates shall be modelled as per ASHRAE 90.1 – 2010 (G3.1.2.6).

5. Apply ASHRAE kitchen exhaust demand ventilation requirements
Provide for the same demand ventilation requirements as described in ASHRAE Appendix G3.1.1.d.

6. Apply ASHRAE’s chiller heat recovery requirements
Provide for the same chiller heat recovery requirements as applies to ASHRAE.

7. Apply supply air temperature reset controlled based on warmest zone
Reset the minimum supply air temperature to satisfy the cooling requirements of the warmest zone, as stipulated in NECB Section 5.2.8.8. Note that this control setting is already corrected in CanQUEST for the Reference case.

8. Account for uninsulated structural penetrations if they exceed 2% of net wall area
The 2% allowance may be applied, but based on the net opaque wall area, not the entire building envelope area.

9. Follow ASHRAE/LEED rules for renovations to existing buildings
Model existing components consistent with ASHRAE and LEED provisions.

10. Account for all anticipated energy use in building
Fully account for all energy end-uses in the energy performance modeling."


As of 10/1/16, please note the following clarifications for the ACP language in the LEED credit library:

1. Clarify that the metric is cost.
2. Clarify that CanQUEST does not implement many of the ASHRAE 90.1-2010 conditions.
3. Provide exemptions to a few 90.1 mandatory provisions, which are identified as exempt in the ACP calculator.
4. Provide guidance for projects with district energy systems – see condition #11 in ACP language.
Campus Applicable
No
Internationally Applicable:
Yes
7/2/2018
LEED Interpretation
Inquiry:

Our project is subject to ASHRAE Standard 90.1-2013 for code compliance. To pursue Option 1: Whole Building Simulation, is there a methodology for documenting additional energy performance for LEED v4 projects regulated by ASHRAE Standard 90.1-2013?

Ruling:

Yes, projects applying Option 1: Whole Building Simulation, and regulated by ASHRAE Standard 90.1-2013 may document additional energy performance improvement under LEED v4 EA credit Optimize Energy Performance as described below. The Appendix G modeling method must be used for the LEED submission, even if the Energy Cost Budget method is used to document local code compliance.

Projects may calculate the Equivalent ASHRAE 90.1-2010 Performance improvement as:
Equivalent performance Improvement = % better than ASHRAE 90.1-2013 + Additional Percent Savings

Where Additional Percent Savings is shown in Table 1:

Table 1: Additional Percent Savings for ASHRAE 90.1-2013

Project Type1 Additional Percent Savings
NC-Office 5%
NC-Retail (except restaurant/grocery) 5%
NC-School 6%
NC-Health Care 3%
NC-Restaurant / Grocery 3%
NC-Hospitality 5%
NC-Warehouse 1%
NC-Multifamily 3%
NC-All Other 2%
CS-Office 3%
CS-Retail (except restaurant/grocery) 3%
CS-School 6%
CS-Health Care 1%
CS-Restaurant / Grocery 2%
CS-Hospitality 3%
CS-Warehouse 0%
CS-Multifamily 1%
CS-All Other 1%
CI-Office 3%
CI-Retail (except restaurant/grocery) 4%
CI-School 6%
CI-Health Care 2%
CI-Restaurant / Grocery 3%
CI-Hospitality 4%
CI-Warehouse 0%
CI-Multifamily 1%
CI-All Other 2%

1 Mixed use buildings shall use the weighted average Additional Percent Savings based on the gross enclosed floor area associated with each building type. Unfinished spaces not submitted in the CS rating system shall use the CS values. Data center space must always be considered “All Other”.

Campus Applicable
No
Internationally Applicable:
No
7/2/2018
LEED Interpretation
Inquiry:

Our project is located in California. To pursue Option 1: Whole Building Simulation, is there a methodology for documenting additional energy performance for LEED v4 projects regulated by Title 24-2016?

Ruling:

Project Type1
Additional Percent Savings

NC-Office
7%

NC-Retail (except restaurant/grocery)
8%

NC-School
7%

NC-Health Care
0%

NC-Restaurant/Grocery
0%

NC-Hospitality
8%

NC-Warehouse
0%

NC-Multifamily
8%

NC-All Other
0%

CS-Office
5%

CS-Retail (except restaurant/grocery)
7%

CS-School
5%

CS-Health Care
0%

CS-Restaurant/Grocery
0%

CS-Hospitality
7%

CS-Warehouse
0%

CS-Multifamily
7%

CS-All Other
0%

CI-Office
6%

CI-Retail (except restaurant/grocery)
7%

CI-School
6%

CI-Health Care
0%

CI-Restaurant/Grocery
0%

CI-Hospitality
7%

CI-Warehouse
0%

CI-Multifamily
7%

CI-All Other
0%

Campus Applicable
No
Internationally Applicable:
No
1/25/2019
LEED Interpretation
Inquiry:

Project types and programmatic space types quite often dictate the outcome of the energy simulation model. LEED Rating system adaptations allow adjusted point scales for existing building renovations, Core & Shell projects, and healthcare programmatic space types in recognition that a greater proportion of the energy consumption is either outside of the scope of the project, or more difficult to mitigate within the project scope.

Manufacturing projects served by existing chillers/boilers can model the chilled water and hot water as ‘purchased energy’ however, in this scenario, cannot claim savings between the baseline and proposed. This is identical to major renovations / Core & Shell since such energy related decisions are outside the control of the LEED project owner.

Similar to healthcare projects, manufacturing projects also have large non-regulated energy loads. However, unlike healthcare, manufacturing projects contain limitless varieties of ‘widget makers’ and many (if not all) are proprietary. Healthcare buildings have similar non-regulated energy consuming items. Non-regulated energy consuming items throughout the manufacturing projects do not have such similarities.

Can BD+C projects with more than 50% ASHRAE 90.1 unregulated loads use Minimum energy performance percentage improvements, and an Optimize Energy Performance point scale that matches the percentage improvements and point scale required for Core & Shell projects?

Ruling:

Yes, projects using whole building energy simulation, and documenting unregulated energy cost exceeding 50% of the total proposed building energy cost may use the following BD+C: Core & Shell energy performance improvement thresholds in lieu of the New Construction thresholds.

• Minimum Energy Performance: Demonstrate a 2% improvement in the proposed building performance in accordance with ASHRAE 90.1-2010 Appendix G (or a USGBC-approved equivalent standard).

• Optimize Energy Performance: Use the Core and Shell column of Table 1. Points for percentage improvement in lieu of the New Construction or Major Renovation column.

Provide the LEED Minimum Energy Performance Calculator and an accompanying narrative to justify that unregulated energy cost exceeds 50% of the building’s total proposed energy cost. Refer to the BD+C v4 reference guide definitions of unregulated load and regulated load.

Campus Applicable
No
Internationally Applicable:
Yes
1/10/2020
LEED Interpretation
Inquiry:

Our project is located in California and subject to compliance with Title 24 2019. Title 24 2019 has requirements for lighting power density more stringent than those requirements in ASHRAE 90.1-2010, and unfinished spaces in our project will be subject to the Title 24 2019 requirements.

For LEED credit compliance, our team plans to follow ASHRAE 90.1-2010 modeling. How can we document credit for Title 24 2019 compliant lighting in unfinished spaces?

Ruling:

Building Type*
Unfinished Space Lighting Power Density

Automotive Facility
0.70

Convention Center
0.80

Courthouse
0.80

Dining: Bar Lounge/Leisure
0.75

Dining: Cafeteria/Fast Food
0.70

Dining: Family
0.70

Dormitory
0.61

Exercise Center
0.70

Fire Station
0.71

Gymnasium
0.80

Healthcare Clinic
0.87

Hospital
1.05

Hotel
1.00

Library
0.95

Manufacturing Facility
0.90

Motel
0.88

Motion Picture Theater
0.75

Multifamily
0.60

Museum
1.06

Office
0.72

Parking Garage
0.17

Penitentiary
0.97

Performing Arts Theater
1.10

Police Station
0.96

Post Office
0.8

Religious Building
0.85

Retail: Grocery
1.05

Retail
1.00

School/University
0.72

Sports Arena
0.78

Town Hall
0.85

Transportation
0.60

Warehouse
0.55

Workshop
1.10

Campus Applicable
No
Internationally Applicable:
No

LEEDuser expert

Marcus Sheffer

7group / Energy Opportunities
LEED Fellow

See all LEEDuser forum discussions about this credit » Subscribe to new discussions about Hospitality-NC-v4 EAc2 View the LEED v4.1 version of this credit