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LEED v2009
Existing Building Operations
Energy and Atmosphere

Existing Building Commissioning—Investigation and Analysis

LEED CREDIT

EBOM-2009 EAc2.1: Existing Building Commissioning—Investigation and Analysis 1-2 points

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Director - Program Development

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Credit language

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

Intent

Through a systematic process, to develop an understanding of the operation of the building’s major energy-using systems, options for optimizing energy performance and a plan to achieve energy savings.

Requirements

Option 1. Commissioning Process
  • Develop a retrocommissioning, recommissioning or ongoing commissioning plan for the building’s major energy-using systems.
  • Conduct the investigation and analysis phase.
  • Document the breakdown of energy use in the building.
  • List the operating problems that affect occupants’ comfort and energy use, and develop potential operational changes that will solve them.
  • List the identified capital improvements that will provide cost-effective energy savings and document the cost-benefit analysis associated with each.

OR

Option 2. ASHRAE Level II Energy Audit
  • Conduct an energy audit that meets the requirements of American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), Level II, Energy Survey and Analysis. [Europe ACP: EN 16247]
  • Document the breakdown of energy use in the building.
  • Perform a savings and cost analysis of all practical measures that meet the owner’s constraints and economic criteria, along with a discussion of any effect on operations and maintenance procedures.
  • List the identified capital improvements that will provide cost-effective energy savings and document the cost-benefit analysis associated with each.

Alternative Compliance Paths (ACPs)

Europe ACP: EN 16247

Projects in Europe may use the energy audit procedure defined in EN 16247-2:2014 with a level of detail consistent with the scope of the credit.

Credit substitution available

You may use the LEED v4 version of this credit on v2009 projects. For more information check out this article.

Pilot Alternative Compliance Path Available

This credit has an alternative compliance path available for the use of ISO 50001: Energy Management Systems. For more information see Pilot ACP 86: LEED 2009 EBOM ACPs for ISO 50001.

See all forum discussions about this credit »

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Frequently asked questions

To what degree is it necessary to follow the ASHRAE "Procedures for Commercial Building Energy Audits" document? Is this provided as a general guide or must it be followed precisely, using the ASHRAE forms and completing the audit using the ASHRAE methodology?

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Who can perform the ASHRAE Level II audit? Can it be done by someone in-house?

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(If you're already a premium member, log in here.)

My building is already very efficient and has an Energy Star score over 90. (Or, it's small and has passive systems.) How do I know if I’ve identified enough capital improvement measures? Is there a minimum requirement for improvement measures?

The answer to this question is available to LEEDuser premium members. Start a free trial »

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What are the requirements for on-going Measurement and Verification (M&V)? How can our project meet this requirement without a BAS or sub-metering?

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Documentation toolkit

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Credit achievement rate

XX%

Upgrade to LEEDuser Premium to see how many projects achieved this credit. Try it free »

LEEDuser expert

David Hubka

LEED Fellow, WELL AP

Rivion
Director - Program Development

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USGBC logo

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

Intent

Through a systematic process, to develop an understanding of the operation of the building’s major energy-using systems, options for optimizing energy performance and a plan to achieve energy savings.

Requirements

Option 1. Commissioning Process
  • Develop a retrocommissioning, recommissioning or ongoing commissioning plan for the building’s major energy-using systems.
  • Conduct the investigation and analysis phase.
  • Document the breakdown of energy use in the building.
  • List the operating problems that affect occupants’ comfort and energy use, and develop potential operational changes that will solve them.
  • List the identified capital improvements that will provide cost-effective energy savings and document the cost-benefit analysis associated with each.

OR

Option 2. ASHRAE Level II Energy Audit
  • Conduct an energy audit that meets the requirements of American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), Level II, Energy Survey and Analysis. [Europe ACP: EN 16247]
  • Document the breakdown of energy use in the building.
  • Perform a savings and cost analysis of all practical measures that meet the owner’s constraints and economic criteria, along with a discussion of any effect on operations and maintenance procedures.
  • List the identified capital improvements that will provide cost-effective energy savings and document the cost-benefit analysis associated with each.

Alternative Compliance Paths (ACPs)

Europe ACP: EN 16247

Projects in Europe may use the energy audit procedure defined in EN 16247-2:2014 with a level of detail consistent with the scope of the credit.

Credit substitution available

You may use the LEED v4 version of this credit on v2009 projects. For more information check out this article.

Pilot Alternative Compliance Path Available

This credit has an alternative compliance path available for the use of ISO 50001: Energy Management Systems. For more information see Pilot ACP 86: LEED 2009 EBOM ACPs for ISO 50001.

XX%

Upgrade to LEEDuser Premium to see how many projects achieved this credit. Try it free »

Got the gist of EAc2.1 but not sure how to actually achieve it? LEEDuser gives step-by-step help. Premium members get:

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  • 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.

To what degree is it necessary to follow the ASHRAE "Procedures for Commercial Building Energy Audits" document? Is this provided as a general guide or must it be followed precisely, using the ASHRAE forms and completing the audit using the ASHRAE methodology?

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.)

Who can perform the ASHRAE Level II audit? Can it be done by someone in-house?

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.)

My building is already very efficient and has an Energy Star score over 90. (Or, it's small and has passive systems.) How do I know if I’ve identified enough capital improvement measures? Is there a minimum requirement for improvement measures?

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.)

What are the requirements for on-going Measurement and Verification (M&V)? How can our project meet this requirement without a BAS or sub-metering?

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.)

LEEDuser expert

David Hubka

LEED Fellow, WELL AP

Rivion
Director - Program Development

See all LEEDuser forum discussions about this credit » Subscribe to new discussions about EBOM-2009 EAc2.1