[grumbelbart]

That's just economy of scale, though. It's always more expensive to be the early adaptor. In Switzerland, 15% of all buildings are heated using geothermal heat pumps.

[thomasmg]

Yes. And in Switzerland, I believe most new houses have some other type of heat pump (drilling for geothermal is not allowed everywhere, or too expensive). This all still needs electricity; but many houses now install photovoltaics. (At least where I live.)

[kragen]

This is completely unrelated to the article, which is about geothermal power, not ground-source heat pumps.

[thomasmg]

I mean heat pumps where you drill around 200 meters deep. Whether you want to call those geothermal or ground-source, that is up to you I guess.

[kragen]

This is completely unrelated to the article, which is about geothermal power, not ground-source heat pumps.