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Energy-Related Pilot Credits
Alternative Performance Rating Method

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Pilot-Credits EApc111: Alternative Performance Rating Method 1-18 points

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Credit language

USGBC logo

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

Intent

To reduce the environmental and economic harms of excessive energy use by achieving a minimum level of energy efficiency for the building and its systems.

Requirements

EA Prerequisite: Minimum Energy Performance

Required
And

EA Credit: Optimize Energy Performance

1-18 points for all adaptations, except:
Schools (1-16 points), Healthcare (1-20 points), MF Mid-Rise (1-30 points).

EA Prerequisite: Minimum Energy Performance
Whole-Building Energy Simulation

Demonstrate a minimum reduction of 5% for new construction or 3% for major renovations in the proposed building Performance Cost Index (PCI)1 below the Performance Cost Index Target (PCIt) calculated in accordance with Section 4.2.1.1 of ANSI/ASHRAE/IESNA Standard 90.1-2016, Appendix G, except with Table 1 below replacing Table 4.2.1.1. Projects registered before November 1, 2016 may use ANSI/ASHRAE/IESNA Standard 90.1-2013, Appendix G with addenda k, r, z, aa, ad, bm, and dx2. For mixed use buildings, the required PCI shall be calculated by using an area weighted average of the building types.

Projects must meet the minimum PCI before taking credit for renewable energy systems. The proposed design must meet the following criteria:

  • compliance with the mandatory provisions of ANSI/ASHRAE/IESNA Standard 90.1–2010, with errata3
  • inclusion of all energy consumption and costs within and associated with the building project; and
  • comparison against a baseline building that complies with Standard 90.1–2016, Appendix G.

Document the energy modeling input assumptions for unregulated loads. Unregulated loads should be modeled accurately to reflect the actual expected energy consumption of the building.

If unregulated loads are not identical for both the baseline and the proposed building performance rating, and the simulation program cannot accurately model the savings, follow the exceptional calculation method (ANSI/ASHRAE/IESNA Standard 90.1–2016, G2.5).

Table 1 – Building Performance Factors (BPFs) for Compliance with Standard 90.1-2010

Rating System Adaptation

Building Performance Factor (BPF)

New Construction (Except High-Rise Residential)

0.72

Retail (Incl. Restaurant)

0.72

School

0.65

Healthcare

0.69

Hospitality

0.76

Warehouse

0.70

Homes Mid-Rise & NC High-Rise Residential

0.89

EA Credit: Optimize Energy Performance

Projects using the Option 1. Whole-Building Energy Simulation path for EA Credit Optimize Energy Performance:

Comply with all credit requirements, except that the requirement to “Demonstrate a percentage improvement in proposed building performance rating compared with the baseline” shall be replaced with the following requirement:

Demonstrate a percentage reduction in the Performance Cost Index (PCI) below the Performance Cost Index Target (PCIt) calculated in the prerequisite. Points are awarded according to Table 1, as shown in the LEED Rating System language for EA: Optimize Energy Performance.

1 A PCI of 1.0 is approximately equal to the energy cost performance of a building constructed to Standard 90.1-2004. A PCI of 0 is a zero energy cost building.
2 Available as individual addenda for free at: https://ashrae.org/File%20Library/docLib/StdsAddenda/2015_Supplement_to_... or compiled as a stand-alone version of Appendix G for sale at http://www.techstreet.com/ashrae/products/1907683
3 All references within ASHRAE 90.1-2016 Section G1.2.1 shall be considered to be referring to ASHRAE 90.1-2010 for the purposes of this Alternative compliance Path. Compliance with ASHRAE 90.1-2016 Mandatory Provisions are not required; instead, ASHRAE 90.1-2010 mandatory provisions apply.

Submittals

General

Register for the pilot credit

Credits 106-115

Credit Specific Documentation

In addition to the standard documentation for this prerequisite, provide the following additional documentation:

  • A list of all input parameters for the Performance Cost Index and Performance Cost Index Target that are shown for the Baseline and Proposed Case in the LEED Minimum Energy Performance Calculator for 90.1-2016.
  • Documentation showing the calculation of PCIt for the project building. Replace the Baseline and Proposed outputs in the LEED Minimum Energy Performance Calculator with the Performance Cost Index Target and the Performance Cost Index respectively.
See all forum discussions about this credit »

What does it cost?

Cost estimates for this credit

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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 »

Documentation toolkit

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USGBC logo

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

Intent

To reduce the environmental and economic harms of excessive energy use by achieving a minimum level of energy efficiency for the building and its systems.

Requirements

EA Prerequisite: Minimum Energy Performance

Required
And

EA Credit: Optimize Energy Performance

1-18 points for all adaptations, except:
Schools (1-16 points), Healthcare (1-20 points), MF Mid-Rise (1-30 points).

EA Prerequisite: Minimum Energy Performance
Whole-Building Energy Simulation

Demonstrate a minimum reduction of 5% for new construction or 3% for major renovations in the proposed building Performance Cost Index (PCI)1 below the Performance Cost Index Target (PCIt) calculated in accordance with Section 4.2.1.1 of ANSI/ASHRAE/IESNA Standard 90.1-2016, Appendix G, except with Table 1 below replacing Table 4.2.1.1. Projects registered before November 1, 2016 may use ANSI/ASHRAE/IESNA Standard 90.1-2013, Appendix G with addenda k, r, z, aa, ad, bm, and dx2. For mixed use buildings, the required PCI shall be calculated by using an area weighted average of the building types.

Projects must meet the minimum PCI before taking credit for renewable energy systems. The proposed design must meet the following criteria:

  • compliance with the mandatory provisions of ANSI/ASHRAE/IESNA Standard 90.1–2010, with errata3
  • inclusion of all energy consumption and costs within and associated with the building project; and
  • comparison against a baseline building that complies with Standard 90.1–2016, Appendix G.

Document the energy modeling input assumptions for unregulated loads. Unregulated loads should be modeled accurately to reflect the actual expected energy consumption of the building.

If unregulated loads are not identical for both the baseline and the proposed building performance rating, and the simulation program cannot accurately model the savings, follow the exceptional calculation method (ANSI/ASHRAE/IESNA Standard 90.1–2016, G2.5).

Table 1 – Building Performance Factors (BPFs) for Compliance with Standard 90.1-2010

Rating System Adaptation

Building Performance Factor (BPF)

New Construction (Except High-Rise Residential)

0.72

Retail (Incl. Restaurant)

0.72

School

0.65

Healthcare

0.69

Hospitality

0.76

Warehouse

0.70

Homes Mid-Rise & NC High-Rise Residential

0.89

EA Credit: Optimize Energy Performance

Projects using the Option 1. Whole-Building Energy Simulation path for EA Credit Optimize Energy Performance:

Comply with all credit requirements, except that the requirement to “Demonstrate a percentage improvement in proposed building performance rating compared with the baseline” shall be replaced with the following requirement:

Demonstrate a percentage reduction in the Performance Cost Index (PCI) below the Performance Cost Index Target (PCIt) calculated in the prerequisite. Points are awarded according to Table 1, as shown in the LEED Rating System language for EA: Optimize Energy Performance.

1 A PCI of 1.0 is approximately equal to the energy cost performance of a building constructed to Standard 90.1-2004. A PCI of 0 is a zero energy cost building.
2 Available as individual addenda for free at: https://ashrae.org/File%20Library/docLib/StdsAddenda/2015_Supplement_to_... or compiled as a stand-alone version of Appendix G for sale at http://www.techstreet.com/ashrae/products/1907683
3 All references within ASHRAE 90.1-2016 Section G1.2.1 shall be considered to be referring to ASHRAE 90.1-2010 for the purposes of this Alternative compliance Path. Compliance with ASHRAE 90.1-2016 Mandatory Provisions are not required; instead, ASHRAE 90.1-2010 mandatory provisions apply.

Submittals

General

Register for the pilot credit

Credits 106-115

Credit Specific Documentation

In addition to the standard documentation for this prerequisite, provide the following additional documentation:

  • A list of all input parameters for the Performance Cost Index and Performance Cost Index Target that are shown for the Baseline and Proposed Case in the LEED Minimum Energy Performance Calculator for 90.1-2016.
  • Documentation showing the calculation of PCIt for the project building. Replace the Baseline and Proposed outputs in the LEED Minimum Energy Performance Calculator with the Performance Cost Index Target and the Performance Cost Index respectively.
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