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Issue 4.2

Whole-Building Life Cycle Assessment: Comparison of Available Tools

For years, reducing the carbon emissions related to building operations has taken priority. However, operational carbon is no longer the primary factor for buildings’ carbon emissions. With energy efficiency gains in high-performance buildings and an increasingly low-carbon utility grid, the operational carbon from energy purchased or produced on-site is decreasing while the embodied carbon of the materials makes up 50% or more of a building’s total life cycle carbon emissions.

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