855773667-LEED-v5-O-M-Reference-Guide-Launch-Edition-1 - Page 160

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𝐶 𝐶𝐶(𝐴 𝐴𝐴−𝑐 𝑐𝑐𝑙 𝑙𝑙) 𝐸 𝐸 𝐸 𝐸 𝐸 𝐸𝐸 𝐺 𝐺𝐺 𝐹 𝐹 𝐹 = 0.400 × 𝐺 𝐺𝐺 𝐹 𝐹 𝐹

Equation 3. GHG Emissions factor: Chilled water from air-cooled electric chillers

Equation 4. GHG emissions factor: District heat from hot water or steam

𝐻 𝐻𝐻 𝑁 𝑁 𝑁 𝑁 𝑁 𝐺 𝐺𝐺 𝑓 𝑓 𝑓 = 1.2 × 𝐺 𝐺𝐺 𝑓 𝑓 𝑓 PATH 1. PERFORMANCE RELATIVE TO SIMILAR BUILDINGS

Equation 4. GHG emissions factor: District heat from hot water or steam

This path compares the project’s total GHG emissions calculated in accordance with the guidance above to those of similar buildings. At least 75% of the project’s gross floor area must be associated with building activities referenced by ASHRAE 100-2024 to be eligible to apply Path 1.

GHG emissions intensity targets For all project locations, targets are derived using U.S. EPA national average GHG emissions factors for natural gas and electricity, resulting in a single target per building type and climate zone regardless of local grid conditions. This makes Path 2. Performance Relative to Historical Baseline achievement easier for projects in clean grid locations recognizing the further challenges for these projects to earn Option 2. Renewable Energy due to market penetration of renewable energy.

GHG emissions intensity targets for the project’s climate zone and building activity are calculated using the ASHRAE 100-2024, Appendix B site EUI targets for electricity (Table B-3) and natural gas (Table B-4) and the U.S. EPA national average GHG emissions factors for natural gas and electricity and multiplying the total by the operating shift adjustment (S).

For mixed-use properties with more than one building activity, calculate a weighted average GHG emissions intensity target based on gross floor area and operating shift multiplier of each building activity. For more information, refer to the guidance from EAp3: Minimum Energy Performance, Option 2. Energy Use Intensity Targets.

Path 2. Performance relative to historical baseline All projects can use Path 2, which establishes the GHG emissions target based on a historical baseline.

For more information on determining the site energy use per energy source used to calculate the historical baseline, refer to the guidance from the section entitled Historical Baseline from EAp3: Minimum Energy Performance, Option 3. Performance Relative to Historical Baseline .

U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, April 2025 Launch Edition 150