Unterhaching Geothermal Power Plant

The Unterhaching geothermal project with an original electrical generating capacity of approx. 3.4 MW and a final thermal capacity of 70 MW was started in 2004 and has been supplying district heat to local households since 2007. Therefore, the power plant extracts heat from the Malmkarst via a well with a discharge rate of up to 150 l/s. The thermal water, produced from a depth of 3,350 m, has a temperature of 122 °C. After use, it is reinjected back into the underground via a second 3,590 m deep well.  

In the meantime, the Kalina cycle-based power generation plant has been shut down. On the other hand, according to the operator Geothermie Unterhaching GmbH & Co KG, around 7,000 households have been connected to the geothermal district heat supply via a 47 km long heating network (Status 2017).