It's not significant indeed. Imagine a balloon the size of the earth and pricking a tiny hole in it. Does it 1) rapidly deflate, or 2) does not change measurably in size at all for millions/billions of years? Replace your mental model of a balloon with that of a massive amount of hot stuff surrounded by a thin crust and you have your answer.
Geothermal works pretty well anywhere from a technical point of view. The main issue is that drilling holes is expensive. There is a company called Eavor that is actually re-purposing former (failed) oil drilling attempts to get a head start on that. That is smart. Even so, they are on the expensive side of the spectrum. It's just a lot of capital expenses to get to warm enough temperatures that you can get steam to drive a turbine. And of course you need either a lot of holes or a very big one to scale it.
Eavor claims that they are going to be essential for baseload. IMHO they might be too expensive for that but we'll see if they can lower their cost over time.
Geothermal works pretty well anywhere from a technical point of view. The main issue is that drilling holes is expensive. There is a company called Eavor that is actually re-purposing former (failed) oil drilling attempts to get a head start on that. That is smart. Even so, they are on the expensive side of the spectrum. It's just a lot of capital expenses to get to warm enough temperatures that you can get steam to drive a turbine. And of course you need either a lot of holes or a very big one to scale it.
Eavor claims that they are going to be essential for baseload. IMHO they might be too expensive for that but we'll see if they can lower their cost over time.