Thanks for sharing this, @Firedog. That’s just the sort of good news story I need on a Monday morning!

Deep geothermal energy is heating 250,000 homes in Paris

That’s no small feat! They mention it being cost effective, I wonder how much upfront investment is needed to harness this and how long the infrastructure lasts without needing maintenance and replacement. From what I see it’s always costs that hinder a renewable energy source from being utilized. 

Iceland has a good geothermal source .. it also has some fairly active volcanos 

I recommend a visit here if you are interested in this sort of thing and ever visit Iceland. 

https://www.on.is/en/geothermal-exhibition/

It was amazing to see and hear about it in action.

The waterfalls are also interesting to visit, also the geothermal outside pools and the fault line running through the country. 

I lived in Iceland for 17 years, so that’s where my interest in geothermal energy (GE) springs from, to coin a phrase. 

The article only mentions using GE for heating, and for many years that was almost the sole use it was put to in Iceland, eventually reaching 85% of all houses. Nowadays though, GE produces 27% of Iceland’s electricity, too. That’s not likely to happen here in the foreseeable future, though, because the high temperatures are much deeper.