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LEED v4.1
Data Centers – NC
Energy and Atmosphere
Minimum Energy Performance

LEED CREDIT

Data-Centers-NC-v4.1 EAp2: Minimum Energy Performance Required

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Marcus Sheffer

7group / Energy Opportunities
LEED Fellow

SPECIAL REPORT

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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

Comply with ANSI/ASHRAE/IESNA Standard 90.1–2016, with errata or a USGBC-approved equivalent standard. ASHRAE 90.1-2016 Compliance pathways in Section 4.2.1.1 include compliance with all mandatory provisions, and compliance with one of the following:

  • Prescriptive provisions of Sections 5 through 10
  • Section 11 Energy Cost Budget Method
  • Normative Appendix G Performance Rating Method. When using Appendix G, the Performance Cost Index (PCI) shall be less than or equal to the Performance Cost Index Target (PCIt) in accordance with the methodology provided in Section 4.2.1.1. Document the PCI, PCIt, and percentage improvement using metrics of cost or greenhouse gas (GHG) emissions.
For projects using Normative Appendix G Performance Rating Method:
  • Greenhouse gas emissions: The total greenhouse gas emissions, in terms of carbon dioxide equivalents, shall be calculated for the baseline building performance rating and for the proposed building performance rating, and the percentage improvement shall be determined using carbon dioxide equivalent emissions.
  • US and Canada:
    • use U.S. Environmental Protection Agency’s (EPA) regional grid mix coefficients to calculate GHG emissions by energy source; or
    • use hourly emissions profiles from U.S. Environmental Protection Agency’s (EPA) AVoided Emissions and geneRation Tool (AVERT)
    International:
    • use national grid mix coefficients from the International Energy Agency CO2 Emissions from Fuel Combustion 2017 report to calculate GHG emissions by energy source
    • ISO 52000-1:2017: Greenhouse gas emission factors for each building energy source shall be determined consistently with ISO Standard 52000-1:2017 and published for the country or region where the project is located
  • Exception to Mandatory Measures requirements: For ASHRAE 90.1-2016 mandatory controls provisions that are quantified in the Appendix G Performance Rating Method, (e.g. lighting occupancy sensor controls, lighting daylighting controls, automated receptacle controls, etc.), projects may model the Proposed Building Performance control parameters identically to the Baseline Building Performance control parameters in lieu of compliance with the mandatory provisions.
  • Exceptional Calculations modeled in accordance with Section G2.5 may be modeled to document minimum prerequisite compliance.
  • Only on-site or on-campus renewable energy that meets ASHRAE Standard 90.1-2016 Section G 2.4.1 requirements for on-site renewable energy may be used to meet minimum ASHRAE Standard 90.1-2016 performance requirements.
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LEEDuser expert

Marcus Sheffer

7group / Energy Opportunities
LEED Fellow

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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

Comply with ANSI/ASHRAE/IESNA Standard 90.1–2016, with errata or a USGBC-approved equivalent standard. ASHRAE 90.1-2016 Compliance pathways in Section 4.2.1.1 include compliance with all mandatory provisions, and compliance with one of the following:

  • Prescriptive provisions of Sections 5 through 10
  • Section 11 Energy Cost Budget Method
  • Normative Appendix G Performance Rating Method. When using Appendix G, the Performance Cost Index (PCI) shall be less than or equal to the Performance Cost Index Target (PCIt) in accordance with the methodology provided in Section 4.2.1.1. Document the PCI, PCIt, and percentage improvement using metrics of cost or greenhouse gas (GHG) emissions.
For projects using Normative Appendix G Performance Rating Method:
  • Greenhouse gas emissions: The total greenhouse gas emissions, in terms of carbon dioxide equivalents, shall be calculated for the baseline building performance rating and for the proposed building performance rating, and the percentage improvement shall be determined using carbon dioxide equivalent emissions.
  • US and Canada:
    • use U.S. Environmental Protection Agency’s (EPA) regional grid mix coefficients to calculate GHG emissions by energy source; or
    • use hourly emissions profiles from U.S. Environmental Protection Agency’s (EPA) AVoided Emissions and geneRation Tool (AVERT)
    International:
    • use national grid mix coefficients from the International Energy Agency CO2 Emissions from Fuel Combustion 2017 report to calculate GHG emissions by energy source
    • ISO 52000-1:2017: Greenhouse gas emission factors for each building energy source shall be determined consistently with ISO Standard 52000-1:2017 and published for the country or region where the project is located
  • Exception to Mandatory Measures requirements: For ASHRAE 90.1-2016 mandatory controls provisions that are quantified in the Appendix G Performance Rating Method, (e.g. lighting occupancy sensor controls, lighting daylighting controls, automated receptacle controls, etc.), projects may model the Proposed Building Performance control parameters identically to the Baseline Building Performance control parameters in lieu of compliance with the mandatory provisions.
  • Exceptional Calculations modeled in accordance with Section G2.5 may be modeled to document minimum prerequisite compliance.
  • Only on-site or on-campus renewable energy that meets ASHRAE Standard 90.1-2016 Section G 2.4.1 requirements for on-site renewable energy may be used to meet minimum ASHRAE Standard 90.1-2016 performance requirements.

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.

LEEDuser expert

Marcus Sheffer

7group / Energy Opportunities
LEED Fellow

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