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LeGUp (Learning from the Ground Up) Project

The Soga Research Group, in collaboration with Home Energy Efficiency Team (HEET), has designed and deployed a subsurface temperature monitoring system for the first utility-led retrofit Geothermal Energy Network (GEN) in the United States. Continuous ground temperature measurements have been collected since August 2024, capturing the thermal response of the subsurface during GEN operation. These data will be analyzed to characterize the ground’s thermal behavior under varying system loads, assess seasonal thermal drift, evaluate the influence of groundwater flow, and ultimately ensure the GEN system operates in an optimal and sustainable manner.

Installation of the DFOS system in the borefield: (a) taping the FO cable to the bottom of the U-pipe; (b) taping the cable to the U-pipe at 30 ft intervals (c) attaching the horizontal FO cable to the street pipe; (d) setting up the VIAVI FTH-9000 interrogator in the pump house.
Configuration of the DFOS-based ground temperature monitoring system.