855773667-LEED-v5-O-M-Reference-Guide-Launch-Edition-1 - Page 150
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emissions factor for each fuel to derive the on-site combustion emissions factor for the district heating.
Exclusions for All Option 1 Paths On-site combustion use for the following limited circumstances may be excluded from the total recorded usage to show credit compliance:
Emergency support systems Metering is not required for fuel input to emergency support systems that generate electricity, heating, or cooling upon failure of the primary system in a power outage or extreme temperature event.
To apply the exemption, the sequence of operations must specifically limit emergency support system operations to emergency events associated with power disruptions or with extreme temperatures falling outside of historical temperature highs and lows for the project location.
Emergency support systems are not exempt for locations where power outages commonly occur for more than 200 hours per year.
Portable equipment Portable equipment for outdoor cooking amenities or outdoor patio heating may be excluded when limited to less than 200 hours per year. Fuel lines cannot be permanently piped to the equipment.
Special circumstances Limited on-site combustion may be excluded from the total reported in certain cases, where onsite combustion is integral to system function. Examples include:
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Portable laboratory equipment
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Wood-fired ovens in commercial kitchens fitted with emissions control devices
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Vocational schools using fossil fuels solely for the purpose of training
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Electric incinerators for medical waste
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Fireplaces, hearths, and fire pits exclusively designated to support ceremonial practices (such as those unique to Indigenous cultures or religious practices that require the use of fire)
These special circumstances do not extend more broadly to process equipment except when approved by GBCI on a project-specific basis for systems with very low greenhouse gas emissions.
U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, April 2025 Launch Edition 140