The research data compiled as part of publicly funded research projects have been compiled on this website since 2015.

The data below has been compiled as part of all research undertaken on ground thermal properties:

1) Database of average thermal conductivity values from Bedrock Formations – this includes all data sampled and tested since 2017  from individual boreholes (IGTP 1, 2 & 3 projects – refer to interactive map)

2) Database of average thermal conductivity values for Irish Sub-soil types – with the completion of the 2017 field sampling and analyses, data to facilitate horizontal ground loop collector design has been gathered for Irish Soils (IGTP3 project – refer to interactive map)

3) Ground Loop Sizing Tables – Reference values for sizing geothermal closed loop vertical collectors for Irish conditions leading to future development of correctly sized collectors.  (IGTP 2 project)

NEW – Regional Thermal Conductivity maps of Case Study areas (ShallowTHERM, 2021)


Regional Thermal Conductivity Maps 

      Case Study Area 1 TC               Case Study Area 2 TC               Case Study Area 3 TC

Energy Exchange Potential

      Case Study Area 1  EX               Case Study Area 2 EX               Case Study Area 3 EX

The Thermal Conductivity Interactive Map provides a useful reference tool for designers.

Ground Loop Sizing Tables – for systems up to 30 kW (Contact Us for more details)




The ShallowTherm project has been supported with financial contribution from the Sustainable Energy Authority of Ireland under the SEAI National Energy Research, Development & Demonstration Funding Programme 2019, and Geological Survey Ireland (GSI) – Grant number 19/RDD/443. The project has also received in-kind contribution from GSI.