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Within WP5, the focus is on how production data can be used more effectively to improve the design and operation of geothermal installations. During the Geo4all General Assembly Event on 17 September 2026, an update on the work package was presented.

Within WP4, research focuses on how cooling of the deep subsurface – the so-called ‘cold front’ – develops in space and time during geothermal production. During the Geo4all General Assembly Event on 17 September 2026, an update on the work package was presented.

Within WP3, research focuses on how deep closed-loop geothermal systems can be optimised under different subsurface conditions. During the Geo4all General Assembly Event on 17 September 2026, an update on the work package was presented.

Within WP2, research focuses on how different well designs can help make better use of geothermal reservoirs with less favourable properties. During the Geo4all General Assembly Event on 17 September 2026, TNO and EBN gave a presentation on the latest developments.

Geo4all WP4 – Research paper: Research on reservoir cooling and geomechanical properties, based on measurements at the Middenmeer geothermal site.

A practical, generic matrix for systematically identifying and assessing drilling risks for geothermal wells. The matrix provides a basis for project-specific risk assessments and also includes possible preventive and mitigation measures.

Supporting report for the Drilling Risk Matrix. It describes the methodology, how the matrix can be used, and its application to different geothermal well concepts, including highly deviated and multilateral wells.

The results of Geo4all Work Package 1 (WP1) are available (as of 27 October 2025). The research shows that LTG is technically feasible in the Netherlands, but that there is still a lack of knowledge about, among other things, well completion in loose rock formations and the production of water without entrained particles.

During the Geo4all General Assembly Event on 30 September 2025, an update was provided from all work packages. View the presentation of work package 2.

During the Geo4all General Assembly Event on 30 September 2025, an update was provided from all work packages. View the presentation of work package 5.

Tijdens het Geo4all General Assembly Event op 30 september 2025 werd er een update gegeven vanuit alle werkpakketten. Bekijk de presentatie van werkpakket 4.During the Geo4all General Assembly Event on 30 September 2025, an update was provided from all work packages. View the presentation of work package 4.

During the Geo4all General Assembly Event on 30 September 2025, an update was provided from all work packages. View the presentation of work package 3.

During the Geo4all General Assembly Event on 30 September 2025, an update was provided from all work packages. View the presentation of work package 1.

A number of Geo4all participants gave presentations at the EAGE Global Energy Transition conference GET 2024 on 5 November 2024. Jonah Poort (TNO) explained to the participants how important the structured collection and analysis of data from the geothermal plant helps to make it more efficient and reliable.

A number of Geo4all participants gave presentations at the EAGE Global Energy Transition conference GET 2024 on 5 November 2024. A joint presentation by Andrea Vondrak and Alexander van Noort explained the unique measurements set up by Ennatuurlijk Aardwarmte to not only model but actually measure the cold bubble in their reservoir.

A number of Geo4all participants gave presentations at the EAGE Global Energy Transition conference GET 2024 on 5 November 2024. In his presentation, Coen Leo of Teon discussed the opportunities for closed-loop systems using a new and fast drilling technique. A technique that makes it possible to drill deeper and thus harvest more heat from underground.

Geo4all participants gave a presentation on the design and initial results of this innovation programme launched in 2024 at the EAGE Global Energy Transition conference GET 2024 in November.

On September 26, 2024, the first Geo4all working meeting took place. In the introduction, the focus was on the overview and background of the Geo4all program