But we know for sure it can be done because in 2009 a nearby Icelandic geothermal plant accidentally drilled into Krafla's magma chamber. The incident revealed important insights about the liquid state and dynamic interactions of the magma, although the drill's steel casings were obliterated in the process. On the bright side, this incursion also showed that exposing the magma chamber doesn't cause volcanoes to erupt.
There's surprisingly little geothermal power being actively produced by the Earth via radioactive decay relative to the world energy consumption.
There's loads of stored energy, but not a lot of new "production", nor transmission.
At the normal average 4% energy production growth rate we have another 28 years until we use up all new geothermal energy produced in the Earth, assuming we would only build geothermal from today.
But at the current total world geothermal energy production of ~0.1TW, it'll take 150 years to reach the 40TW at 4% growth rate.
It'll still take like 750 years until we suck all the stored geothermal energy (which is like 5.5555 quadrillion TWh) dry every year at 4% growth rate, but still, it seems like another "climate-change-like" moment to literally suck up all heat the heat being conducted to the surface of the planet from the interior.
Especially since we would differentially cool the crust, seems like a recipe for earthquakes and general troubles if we take it too far in the next hundred years or so.
We should generally aim to keep the net energy balance of the Earth the same as it was before we were here. If there is growth it has to happen in space or any heat production has to at least be beamed into space via the infrared atmospheric window (where it mostly passes through our atmosphere without being radiated back via the greenhouse effect).
So we should probably use geothermal energy very wisely.
32 volcanoes, but how many of them are over a mile long? That's rad af.
Anyway, I wonder if drilling into the magma chamber won't create a "path of least resistance" for when the volcano finally decides to erupt... doesn't sound like a good idea to stay at the other end of such path.
Then, with earthquakes and what not, how stable can they keep that bore hole?