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12 results on '"Johnson, Jeremiah X."'

6. Life Cycle Greenhouse Gas Emissions of CO2-Enabled Sedimentary Basin Geothermal

Author

Liu, Lily, Miranda, Marcos M., Bielicki, Jeffrey M., Ellis, Brian R., and Johnson, Jeremiah X.

Abstract

The expansion of renewable energy and the large-scale deployment of carbon dioxide (CO2) capture and storage (CCS) can decarbonize the power sector. The use of CO2to extract geothermal heat from naturally porous and permeable sedimentary basins to generate electricity (CO2-plume geothermal (CPG) system) presents an opportunity to simultaneously generate renewable energy and geologically store CO2. In this study, we estimate the life cycle greenhouse gas (GHG) impacts of CPG systems through 12 scenarios in which CPG systems are combined with one of six CO2sources (e.g., bioenergy with carbon capture and storage (BECCS) and iron and steel facilities) and operate in two geological settings. We find the life cycle GHG emissions of CPG systems ranging from −0.25 to −6.18 kg CO2eq/kWh. CPG systems can achieve the highest emissions reductions when utilizing the CO2captured from BECCS. We evaluate uncertainty through a Monte Carlo simulation, demonstrating consistent net reductions in life cycle emissions and a local, one-parameter-at-a-time sensitivity analysis that identifies the CO2capture capacity as the high-impact parameter of the results. Through the production of electricity, CPG systems can provide additional environmental benefits to the deployment of large-scale CCS.

Published
2024
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12. Twelve Principles for Green Energy Storage in Grid Applications.

Author

Arbabzadeh, Maryam, Johnson, Jeremiah X., Keoleian, Gregory A., Rasmussen, Paul G., and Thompson, Levi T.

Subjects
*GRID energy storage, *ELECTRIC power distribution grids, *VANADIUM redox battery, *RENEWABLE energy sources, *POWER resources
Abstract

The introduction of energy storage technologies to the grid could enable greater integration of renewables, improve system resilience and reliability, and offer cost effective alternatives to transmission and distribution upgrades. The integration of energy storage systems into the electrical grid can lead to different environmental outcomes based on the grid application, the existing generation mix, and the demand. Given this complexity, a framework is needed to systematically inform design and technology selection about the environmental impacts that emerge when considering energy storage options to improve sustainability performance of the grid. To achieve this, 12 fundamental principles specific to the design and grid application of energy storage systems are developed to inform policy makers, designers, and operators. The principles are grouped into three categories: (l) system integration for grid applications, (2) the maintenance and operation of energy storage, and (3) the design of energy storage systems. We illustrate the application of each principle through examples published in the academic literature, illustrative calculations, and a case study with an off-grid application of vanadium redox flow batteries (VRFBs). In addition, trade-offs that can emerge between principles are highlighted. [ABSTRACT FROM AUTHOR]

Published
2016
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