⚠️ Scheduled maintenance in weekends and evenings in September and October

In the weekends - and partly in the evenings - of September and October, ThermoGIS will be temporarily fully or partly unavailable due to a migration to our new servers. This migration will take place between Friday evenings 18.00 hrs and Monday mornings 8.00 hrs and partly on other days after working hours. Our apologies for the inconvenience.

10 years of ThermoGIS


Geothermal energy is a renewable energy source and an excellent alternative for heating homes and greenhouses in a sustainable way or for generating electricity. Geothermal energy has many advantages: it is sustainable, virtually CO2-emission free, available 24 hours a day, independent of oil price fluctuations and the installations do not stand out in an obstructive way.

The fact that the subsurface of the Netherlands offers sufficient opportunities for geothermal energy extraction is evident from the many feasibility studies and drillings that are currently underway. Would you like to use geothermal energy and know if geothermal energy is available near you? Are you interested in the national geothermal potential? Then ThermoGIS can help you!

What is ThermoGIS?

ThermoGIS is a public, web-based geographical information system with the main goal of supporting companies and the government to develop geothermal energy in the Netherlands. TNO used the abundance of available subsurface data and its broad knowledge of the Dutch subsurface to create ThermoGIS.

ThermoGIS provides depth, thickness, porosity and permeability maps of many potential aquifers in the Netherlands. Geothermal performance maps are calculated with the use of an integrated, stochastic, techno-economic performance module. The most important outputs of ThermoGIS are geothermal potential maps of the Netherlands that can be viewed in the Map viewer (Map viewer information). On the Calculation tab within the Map viewer, the performance calculation can be rerun for a specific location, and the key parameter values can be altered by the user.

An Introduction to geothermal energy and more detailed Technical information explain how the maps came about. The ThermoGIS data is publicly available and can be downloaded.


The data that can be retrieved from ThermoGIS provides a first quick overview of the geothermal potential for any location. It has to be stressed, though, that the maps are based on regional geological interpretations. Therefore a more in-depth local geological and economic feasibility study has to be carried out for future development. Furthermore, some aquifers were not mapped in ThermoGIS due to insufficient data.

New borehole data become available every year. New data may provide new insights in the reservoir properties and therefore affect current maps in ThermoGIS. ThermoGIS will be updated regularly when new data is available. This means that multiple versions exist.