A Bulgarian Municipality uses a geothermal water source to heat its schools and public buildings, and teaches the necessary know-how in a seminar.
![](https://innovationinpolitics.eu/wp-content/uploads/2020/01/5cdd6b49107bd.jpg)
A Bulgarian Municipality uses a geothermal water source to heat its schools and public buildings, and teaches the necessary know-how in a seminar.