855773520-LEED-v5-ID-C-Reference-Guide-Launch-Edition-1 - Page 044

Extracted Content

Analysis Period Tenant spaces are assumed to be renovated every 10 years on average; thus, the LEED ID+C: Commercial Interiors carbon assessment uses a 10-year period for the analysis.

Operational Carbon Emissions EAp1: Estimated Energy Use and Operational Carbon Projection calculates the business-asusual (BAU) carbon projection from operational emissions from energy over 10 years. The BAU assumes that emissions from fuel use will remain constant, and that emissions from electricity will decline linearly at 3.8% per year (the equivalent of declining by 95% over 25 years). See EAp1: Estimated Energy Use and Operational Carbon Projection for more information.

Refrigerant Emissions EAp5: Fundamental Refrigerant Management calculates the annual refrigerant emissions. It uses a default annual leakage rate of 2%, or an annual leakage rate of 1% for projects pursuing Option 2. Limit Refrigerant Leakage of EAc6: Enhanced Refrigerant Management .

Embodied Carbon Emissions MRp2: Quantify and Assess Embodied Carbon calculates the embodied carbon in global warming potential (GWP) (kgCO2e) of the project interiors. Assumptions required to calculate the embodied carbon are found in MRp2: Quantify and Assess Embodied Carbon.

A1-A3 embodied carbon emissions result from multiplying the MRp2: Quantify and Assess Embodied Carbon embodied carbon values by 1.5 for interiors and MEP products, A4, and A5 emissions. Recurring embodied carbon assumes the project undergoes renovations every 10 years. Multiply the MRp2: Quantify and Assess Embodied Carbon embodied carbon values by 0.25 to account for the recurring embodied carbon.

Transportation Emissions Teams may only calculate the emissions projection from transportation when the project pursues LTc2: Transportation Demand Management. The projections assume no change in vehicle miles traveled (VMT) over the 10-year period and a linear 95% grid decarbonization.

U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 33