LCA Tools for Carbon Negative Buildings
by Stephanie Carlisle, Senior Policy Researcher for the Carbon Leadership Forum
The promise of radically decarbonizing the building sector lies, in part, with replacing high carbon materials with lower carbon alternatives. One of the most promising areas of research has been on materials that are not simply less carbon intensive, but those which actually draw down atmospheric carbon and store it over time. Building materials that make use of agricultural feedstocks, wood products, and direct carbon utilization all have these properties. Still, evaluating their merits has been challenging since these processes fall outside the standard practice of carbon accounting for building materials, which tends to focus more on emissions in the factory, and less on those in the forest, the field and the landfill.
In the coming months, ARPA-E will announce a cohort of material and building design teams for the "Harnessing Emissions into Structures Taking Inputs from the Atmosphere" (HESTIA) program, each developing a negative carbon and/or building solution. CLF, along with a team of researchers at the University of Washington, has been awarded $3.7 M over 4 years to lead the Parametric Open Data (POD) | LCA project during which we will work closely with each HESTIA material and building design team to develop custom, parametric LCA screening tools to evaluate their performance at a material and building scale. The CLF team will also be working on a holistic framework for comparative LCA modeling of building materials that includes biogenic carbon, dynamic LCA and carbon storage over the full life of a building.
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