Pilot Site Ketzin

Since 2004, scientific investigations on underground storage of CO2 had been conducted within a context of several large-scale national research-projects, with rich international participation. Of primary interest were the specific processes during the injection of CO2 and the subsequent propagation of the CO2 plume within the storage horizon. Datasets were gathered and documented by a comprehensive monitoring programme. In the long run, these data also helped to safely operate the storage complex and and assess the impact on its environment.
The co-ordination of these works was done by the German Research Centre for Geosciences in Potsdam. All projects were supervised by the mining authority of the state of Brandenburg (LBGR) in Cottbus. From the beginning, the city of Ketzin/Havel has supported the overall project.


In total, five wells were drilled in 2007, 2011 and 2012 (see also aerial view and schematic vertical profile).
Suitable rock formations for CO2 storage were located at 630 to 650 m depth at the Ketzin site consisting of porous sandstone layers, that can store CO2 in their pores. The CO2 injection itself, was operated by GFZ since June 30, 2008 and ended, as scheduled on August 29, 2013. During that period 67,271 t of CO2 were stored in the reservoir.


At Ketzin, the layers are not lying horizontally but are arched (see also schematic profile). The CO2 was injected into the reservoir at a depth of about 630 to 650 m at the southern flank of this dome-like structure. For this, the injection well Ktzi 201 was used, which besides the other deep wells (Ktzi 200, 202 and 203) also serves as an observation well to monitor the distribution of the CO2 in the underground.

The reservoir is sealed by overlying 165 m thick shaly cap rocks. These cap rocks, together with the dome-like structure, ensure a controlled and limited distribution of the CO2. The shallower well P300 ends above these cap rocks and is used for the monitoring of their tightness.

Research projects at the Ketzin pilot site

The research and development work in Ketzin takes place in the context of national projects (BMBF, BMWi) and European projects (EU: 6th and 7th research framework programs).

Ketzin projects


Current and completed research and development projects whose work is linked to CO2 storage and/or to Ketzin.

Explanations and further information about the projects in Ketzin can be found at:

  • CO2MAN (CO2 reservoir management)
  • GeoEn (geoenergy research)
  • CHEMKIN (realtime observation of the chemical and kinetic behavior of carbon dioxide during geological sequestration)
  • CO2CARE (CO2 site closure assessment research)
  • CO2SINK(CO2 storage by injection into a natural saline aquifer at Ketzin)
  • CO2ReMoVe (CO2 Research Monitoring Verification)
  • GRASP Greenhouse-gas Removal Apprenticeship & Student Program)
  • HAI (Helmholtz-Alberta Initiative)
  • COORETEC (CO2 reduction technologies)

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