In the first sentence of the second paragraph, add the following statement: "(or a USGBC approved equivalent standard for projects outside of the U.S.)" behind "Each system component that is addressed by ANSI/ASHRAE/IESNA Standard 90.1–2007..."
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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Incorporate a district heating and/or cooling system for space conditioning and/or water heating of new buildings (at least two buildings total) such that at least 80% of the project’s annual heating and/or cooling consumption is provided by the district plant. Single-family residential buildings and existing buildings of any type may be excluded from the calculation.
Each system component that is addressed by ANSI/ASHRAE/IESNA Standard 90.1–2007 (or a USGBC approved equivalent standard for projects outside of the U.S.) must have an overall efficiency performance at least 10% better than that specified by the standard’s prescriptive requirements. Additionally, annual district pumping energy consumption that exceeds 2.5% of the annual thermal energy output of the heating and cooling plant (with 1 kWh of electricity equal to 3,413 Btus) must be offset by increases in the component’s efficiency beyond the specified 10% improvement. Combined heat and power (CHP) district systems can achieve this credit by demonstrating equivalent performance.
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See all forum discussions about this credit »Addenda
7/1/2014 – Updated: 2/14/2015
Global ACP
Description of change:
Campus Applicable
No
Internationally Applicable:
Yes
5/9/2011 – Updated: 2/14/2015
Reference Guide Correction
Description of change:
Remove the last sentence in the section ("If electricity is also...") and replace with "If a combined heat and power system is used to comply with the credit requirements, show equivalence by demonstrating that energy savings from the CHP plant are greater than or equal to the energy savings that would result from using components that are 10% better than ANSI/ASHRAE/IESNA Standard 90.1-2007."
Campus Applicable
No
Internationally Applicable:
No
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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Incorporate a district heating and/or cooling system for space conditioning and/or water heating of new buildings (at least two buildings total) such that at least 80% of the project’s annual heating and/or cooling consumption is provided by the district plant. Single-family residential buildings and existing buildings of any type may be excluded from the calculation.
Each system component that is addressed by ANSI/ASHRAE/IESNA Standard 90.1–2007 (or a USGBC approved equivalent standard for projects outside of the U.S.) must have an overall efficiency performance at least 10% better than that specified by the standard’s prescriptive requirements. Additionally, annual district pumping energy consumption that exceeds 2.5% of the annual thermal energy output of the heating and cooling plant (with 1 kWh of electricity equal to 3,413 Btus) must be offset by increases in the component’s efficiency beyond the specified 10% improvement. Combined heat and power (CHP) district systems can achieve this credit by demonstrating equivalent performance.
