| 1999 | - Foundation of the HotRock GmbH, Karlsruhe
|
| 2000 | - Grant of the first mining concession for the exploration of geothermal heat and brine in the Upper Rhine Graben
|
| 2003 | |
| 2004 | - Reorganisation of the HotRock GmbH to the HotRock Group, foundation of the HotRock Engineering GmbH
|
| 2005 | - First comprehensive 2-dimensional seismic overview exploration campaign in deep geothermics
- Exploration well Offenbach GT 1 reaches as a deflected well the Buntsandstein (Lower Trias) at a depth of 2.850 m with evidence of a maximum temperature of 165°C
|
| 2006 | - First 3-dimensional seismic measurements being conducted for the exploration of deep geothermal reservoirs in progress for the exploration well Bellheim GT 1
|
| 2008 | - Contract formation of the first all risk coverage insurance, backing finding and drilling risks regarding a portfolio of three projects in the Upper Rhine Graben
- Well Insheim GT 1 – proof of the prognosticated reservoir temperature including sufficient findings
- Selling of the project corporation EWK Insheim to a subsidiary of the Pfalzwerke AG
|
| 2009 | - Start of the well site preparation for the well Rülzheim GT
|
| 2011 | - Participation on the mediation for deep geothermics in the southern Palatine region
|
| 2012 | - Geothermal Project Rülzheim
|
