Results of the seismic survey

In November 2023, data was collected on two lines running east-west (Foetz – Burange and Esch-sur-Alzette – Dudelange) and one line running north-south (Bettembourg – Dudelange).

The processing of the collected data and the interpretation of the results were completed in July 2024.

The results provide the first ever visualisation of the deep subsoil in Luxembourg,  up to a depth of around 2,400 metres.

As the deep subsoil layers, made up largely of sandstone and conglomerates, are generally porous and permeable, warm groundwater can be expected at depths of between 750 and 2,200 metres. Current forecasts predict temperatures of between 40 and 70 degrees Celsius. Assuming that these rocks are sufficiently permeable, their potential as a geothermal reservoir can therefore be confirmed.

Find all the details here