Geotherm has undertaken a wide variety of thermal resistivity testing projects, from full thermal surveys, backfill designs for large cable installations and QA testing of many cubic meters of cable bedding.
Following is an outline of just some of the projects that Geotherm have undertaken.

Geotherm designed Ausgrid’s own specialised bedding material (more commonly known as FTB, Fluidised Thermal Backfill, or TSB, Thermally Stable Backfill) for use within their high voltage underground cable network.
Other projects as part of Ausgrids network include the 132kV, 23km underground project from Beaconsfield Substation to Kogarah Substation, 132kV 10km East Lindfield to Willoughby project, and a thermal resistivity specific research project into local materials and their effects on the Ausgrid network.

Geotherm have also undertaken TR testing works for Transgrid, including Feeders 41, 42 and 43 in Sydney.

Other notable projects include:
• Native ground thermal survey, design of flowable backfill, and QA testing of backfill and FTB bedding materials for the 88km underground circuit for the Victoria Desalination Plant;
• Thermal survey and testing of bedding materials for multiple windfarm projects, including Waterloo, Snowtown (SA), Portland, Chepstowe, Clements Gap, Yambuk, Taralga and Musselroe (TAS);
• Thermal survey and testing of bedding materials for multiple Solar farm projects including Broken Hill, Nyngan, Royalla and Weipa (QLD);
• Thermal Survey and QA testing of FTB for Melbourne’s 66kV Underground CBD Security Project.

Geotherm have also worked for other energy utilities including Ergon Energy, Western Power and SA Power.