Aberdeen has commenced a significant phase in its journey towards adopting renewable heat sources, with the installation of underground sensors across the city to evaluate its geothermal energy potential.
This initiative, known as the Aberdeen Geothermal Feasibility Pilot (AGFP), is spearheaded by the University of Aberdeen and represents a crucial step in developing low-carbon heating solutions for the region.
The project involves burying approximately 100 small ‘seismic nodes’ in green spaces throughout Aberdeen, spanning areas from Bridge of Don to Nigg and extending into the city centre. These compact devices, measuring roughly 10cm x 10cm x 30cm, are designed to record natural vibrations from environmental factors such as wind, waves, and traffic over a period of one to two months.
The data collected from these nodes will be instrumental in generating a comprehensive 3D map of the granite and other geological structures up to 5 kilometres beneath the city’s surface. This detailed subsurface imaging is vital for identifying optimal locations where geothermal heating technology could be most effectively implemented.
Geothermal technology, as explored by this project, involves circulating cold water deep underground to be naturally heated by the Earth’s warmth before being pumped back to the surface for heating purposes.
Dr Amy Gilligan, a researcher associated with the AGFP, highlighted the importance of this initial stage. She stated: “This marks the beginning of an exciting stage of the project. By placing these small sensors in the ground, we can safely and quietly listen to natural vibrations and build a picture of the rocks deep below Aberdeen.” The use of seismic nodes is particularly advantageous for urban geothermal exploration due to their minimal impact and effectiveness in noisy environments.
The AGFP, funded by a £1 million public grant from UK Research and Innovation (UKRI), is an ambitious collaboration with a broad consortium of partners. This includes NHS Grampian, Aberdeen City Council, Aberdeen Heat and Power, Robert Gordon University, the British Geological Survey, and various industry partners.
The long-term vision for the project is to establish geothermal energy as a clean and local heat source. Dr Gilligan further commented on the societal impact:
“Most people won’t notice the sensors once they are in place. But what we learn will help us understand whether geothermal heat could one day provide a clean, local source of heating for homes and public buildings, reducing carbon emissions and support a more sustainable energy future for Aberdeen.”
This initiative aims to not only reduce carbon emissions but also potentially lower heating costs and support district heating networks, contributing to a just energy transition for Aberdeen.
