The British Geological Survey (BGS) has released the second digital version of its UK geothermal catalogue, expanding the national dataset with nearly 14,000 additional subsurface data points derived from around 1,800 sites. The update is designed to improve geothermal resource assessments and support the growing use of geothermal energy across the UK.
The expanded catalogue includes validated datasets from BGS-authored publications, new laboratory measurements of rock thermal conductivity, and bottom-hole temperature data from the UK Onshore Geophysical Library. In addition, the release introduces improved data lineage, enabling users to trace individual observations back to their original sources and better assess data quality and provenance.
The catalogue forms part of the UK Geothermal Platform, launched in 2025 to provide open access to national- and local-scale geothermal datasets. The platform now contains more than 90 datasets and over 60 reports, helping planners, researchers and industry evaluate the potential for both shallow and deep geothermal technologies.
According to BGS, the updated resource supports the feasibility stage of geothermal projects and contributes to improved decision-making for decarbonised heating, heat networks and wider subsurface planning. The data is available under the Open Government Licence, making it accessible for both commercial and non-commercial applications.
Link to catalogue here.
