BGS news

UK geothermal catalogue receives update

BGS releases the second digital version of the UK geothermal catalogue of subsurface temperature and rock thermal conductivity measurements and heat flow calculations.

16/06/2026 By BGS Press
Example of site distribution data in the Geothermal Catalogue. Contains OS and OSNI data © Crown Copyright and database right 2026. Contains BGS data © BGS, UKRI (2026) all rights reserved.
Example of site distribution data in the Geothermal Catalogue. Contains OS and OSNI data © Crown Copyright and database right 2026. Contains BGS data © BGS, UKRI (2026) all rights reserved.

Detailed subsurface information is required to increase the uptake of geothermal energy technologies. Geothermal energy, including ground source heat pumps, can contribute to energy security and to clean energy such as decarbonised heating.

The second version of the UK geothermal catalogue includes the addition of nearly 14 000 more data points derived from 1800 sites to inform geothermal assessments. The digital release contains validated intellectual property rights and datasets from BGS-authored papers, new BGS thermal conductivity laboratory measurements and a bottom-hole temperature dataset from the UK Onshore Geophysical Library.

captionDistribution of sites in the second digital release of the geothermal catalogue. The added sites are in pink; sites previously released in version 1 are in blue. Contains OS and OSNI data © Crown Copyright and database right 2026. Contains BGS data © BGS, UKRI (2026) all rights reserved.
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Distribution of sites in the second digital release of the geothermal catalogue. The added sites are in pink; sites previously released in version 1 are in blue. Contains OS and OSNI data © Crown Copyright and database right 2026. Contains BGS data © BGS, UKRI (2026) all rights reserved.

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The data release comprises a series of MS Excel files and an accompanying user guide that can be accessed for use under the Open Government Licence, with the acknowledgement ‘Contains British Geological Survey materials © UKRI 2026’. This data adds to the openly available geothermal data, models and information already contained within the UK Geothermal Platform and map explorer.

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The open release of the second digital version of the UK geothermal catalogue further adds to over 90 datasets and more than 60 reports that have been available on the UK Geothermal Platform since August 2025. The data informs the feasibility stages of project developments, supporting the growth of the geothermal energy sector. The user guide describes the data sources and the acknowledged limitations with legacy datasets that are included.

Dr Alison Monaghan, head of BGS Geothermal.

In 2025, BGS launched the UK Geothermal Platform, which provides national- to local-scale information on geothermal potential across shallow and deep technology options. The platform draws together diverse information and synthesises it to deliver the information needed by heat policy, heat networks, the national zoning model and planning specialists. Towns, cities and industrial sites can be assessed for the potential to retrofit geothermal technology and new development zones can be quickly assessed for strategic use of geothermal energy from the start of the development or planning cycle.

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