https://www.chuden.co.jp/english/corporate/releases/pressreleases/1211037_5163.html

Has some technical details on the project in Bavaria. It seems to produce relatively low grade heat used mostly for district heating, with a relatively small ORC power generator.

Not sure it’s entirely as easy as the article (which reads a lot like PR) makes it sound. See the sections under sustainability and environmental effects in the article about Geothermal Energy on Wikipedia.