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nonrenewable fuel inputs in the annual site energy determination used for credit compliance.

Annual site energy adjustments for DES (optional) For projects where the high efficiency associated with district CHW generation artificially inflates total estimated site energy consumption, projects may optionally apply either the DES Multiplier or the Virtual DES Efficiency to all DES sources serving the project:

DES MULTIPLIER

o Multiply total reported site energy consumption for “purchased CHW” by 0.325.

o Multiply total reported site energy consumption for “purchased heat” by 1.2.

VIRTUAL DES EFFICIENCY IN EAC2: ENHANCED ENERGY EFFICIENCY. Projects crediting DES efficiency toward the project performance in EAc2: Enhanced Energy Efficiency by modeling the proposed district energy use as virtual on-site CHW and hot water plants may optionally use the total modeled site energy consumption from this proposed rather than separating out the site energy consumption for “purchased CHW” and “purchased hot water.”

In the energy simulation, use submetering to distinguish fuel used onsite from the modeled fuel use for the district hot water plant. Per the Renewable Attributes, Project Energy Source criteria, either renewable electricity generation or renewable fuel may be applied to the submetered fuel and/or electricity use associated with the district heating system; whereas only renewable fuel may be applied to fuel used on the project site.

DES site energy adjustments are not applicable to projects modeled using ASHRAE Standard 90.1-2022, Addendum A . Projects applying Addendum A should use submetering to distinguish fuel used on-site from the modeled fuel used for the district hot water plant.

LEED Platinum Requirements

To achieve LEED Platinum, projects must supply 100% of tenant annual site energy from any combination of Tier 1, Tier 2, and/or Tier 3 renewable energy. Refer to the Project Priorities Library for regional compliance alternatives.

U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 199