Modelling services

With our models we can predict the working and effects of the geothermal system

We offer a variety of modelling services for well field design and environmental assessment studies for Aquifer Thermal Energy Storage, Borehole Thermal Energy Storage and Geothermal Energy. The modelling services include:


For the hydrothermal modelling of ATES, we use HstWin 3D (Heat and Solute Transport 3-D) for calculating thermal efficiency of well fields and to calculate the thermal impact on the environment. HST3D is also capable to model high (95 °C) temperature storage systems as well as solute transport (salt/brackish interfaces).


MLU (multi-layer unsteady state) has been modified by IF Technology to calculate borehole field efficiency (BTES) and calculate impact on individual borehole systems. The modified version also includes groundwater flow. Specific for the well field design for BTES-systems EED (Earth Energy Designer) is used.


Hydrological impact of ATES systems are modelled with Micro-FEM, MLU or MODFLOW. Modelling can be done in complex geohydrological circumstances and for complex non-stationary well regimes.


Well capacity including skin can be calculated for ATES with MLU and for Geothermal projects with DoubletCalc-2D.


We perform well test analyses and geomechanical modelling (reservoir modelling). Risks including induced seismicity can be identified. In addition, we provide geothermal field development plans.


In project with a large impact on the chemical composition on the groundwater PHREEQC-2D is used to calculate the environmental impact. These models combine the geochemical model PHREEQC with solute transport model HST2D. Main applications for this model is high (> 60 °C) temperature ATES.


  • Hydrothermal modelling: HstWin 3D, MLU, TOUGH2
  • Hydrological modelling: Micro-FEM, MLU, MODFLOW
  • Well Testing and design: MLU, DoubletCalc-2D
  • Closed loop design: EED, MLU
  • Hydrochemical modelling: PHREEQC-2D, HST2D
  • Geomechanical and reservoir modelling
  • Well test analyses
  • Field development plan