Together, we achieve.

An innovative team
with entrepreneurial spirit.

fluidXlab has been a member of the HOT Energy Group (HOT) since 2017. Based in Goslar at the Energy Research Centre of Lower Saxony (Germany), the laboratory comprises a diverse and multicultural team, bringing together experts from various disciplines, including petroleum engineers, mechanical engineers, electrical engineers, software engineers, and physicists.


Dr Diethard Kratzer
Managing Director
Diethard Kratzer combines 30+ years of experience in consulting and R&D management. He is founder and CEO of HOT Engineering and heading the HOT Energy Group.
Dr Diethard Kratzer / © The HOT Energy Group, team member of fluidXlab
Dr Diethard Kratzer
Dr Jonas Wegner
Jonas Wegner is Chief Technical Officer with fluidXlab and Head of Lab Services for the HOT Energy Group. He has been lead developer for the application of microfluidic technologies for the visualisation of underground flow and transport processes.
Dr Jonas Wegner, CTO of the fluidXlab team
Dr Jonas Wegner
Dr Leonhard Ganzer
Research & Innovation
Leonhard Ganzer is Professor of Reservoir Engineering and Head of the Institute of Subsurface Energy Systems at Technical University Clausthal, Germany. He is experienced in leading roles of R&D projects and technology development for reservoir simulation, enhanced oil recovery and underground storage of hydrogen and carbon capture and storage (CCS) or usage (CCU). He also acts as expert for the Austrian mining authority for underground gas storage (UGS) projects.
Dr Leonhard Ganzer / © The HOT Energy Group - team member of fluidXlab
Dr Leonhard Ganzer


The HOT Energy Group (HOT) is a technology-driven, multidisciplinary, and independent organisation serving the energy industry for over 35 years.

  • HOT provides best-in-class consultancy, laboratory, and training solutions in underground storage, field development, enhanced oil recovery (IOR/EOR) and deep geothermal energy utilisation.
  • Our experience in underground gas storage (UGS) and hydrocarbon production makes HOT the preferred partner for operators planning UGS, carbon storage & utilisation (CCS/CCU) and, hydrogen storage facilities and oil & gas field (re-)development operations.
  • Working side by side with customers across the globe to deliver best practices and timely solutions, we have offices in Austria, Germany, Libya, and the UAE and a network of alliance and representative offices. (

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