Geothermal ‘battery’ repurposes abandoned oil and gas well in Illinois, researchers report

A conceptual schematic of the type of advanced geothermal energy storage system demonstrated in this study. Credit: Tugce Baser and Renewable Energy

Researchers at the University of I llinois Urbana-Champaign have successfully demonstrated efficient geothermal heat storage while simultaneously repurposing an abandoned oil and gas well.

A new study, led by civil and environmental engineering professor Tugce Baser, is the first field investigation of a geothermal energy storage system within the Illinois Basin—a geologic structure located deep within the subsurface.
The findings are published in the journal Renewable Energy.
Baser said the Illinois Basin is a low-temperature basin, meaning …
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