Fig. 8From: Maximum potential for geothermal power in Germany based on engineered geothermal systemsMap depicting the occurrence of crystalline rocks in Germany. They are considered as a potential area for electricity production using EGS technologies. Shown are Central and Southern German crystalline area (red), Upper Rhine Valley crystalline area (dark red), and Rotliegend volcanics (orange) (modified after Jung et al. (2002))Back to article page