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- GC22C-03: Multisector Modeling of the Co-Production of Geothermal Energy and Direct Air Capture
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NOLA CC
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Jay Fuhrman, Pacific Northwest National Laboratory (First Author, Presenting Author)
Shrey Patel, University of Pennsylvania
Gokul Iyer, Pacific Northwest National Laboratory (PNNL)
Jennifer Wilcox, University of Pennsylvania
Direct air carbon capture and storage (DACCS) is a promising option for carbon dioxide removal (CDR) that will be needed to meet the goal of the Paris Agreement of limiting global average temperature increase to well-below 2 ⁰C. Geothermal energy, in turn, is well-suited to provide electricity and lower-temperature heat for sorbent-based DACCS systems and is being used to run the largest DACCS plant currently in operation. However, deploying DACCS at the scales needed to meaningfully influence global emissions trajectories would compete for geological storage, and for low-carbon energy, including geothermal heat. In this study, we enhanced a leading multisector model to represent a novel, coupled geothermal electricity and DACCS system, which could compliment, rather than compete with, the mitigation benefits of geothermal power alone. We expect that results will provide new insights on the potential cross-sectoral impacts of this technology and its potential contribution to global mitigation efforts, complimenting existing process-level and optimization modeling.
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