I read in the Orange County Register today that President Obama approved an $8 billion project to build a nuclear power station. The article said we haven’t built one in 30 years. I’m not a scientist, but I know that the power plants basically generate power by creating steam and turning a turbine to create electricity. Can we dig deep enough into the earth to boil water?
You don’t need magma for that. It would be unstable and really hot. As you get closer to the core, even a regular mine shaft gets warmer with depth. Hot enough to boil water without reaching the core. But you have to go pretty deep still. Ultimately, it’s just not worth the cost with the technology we have. There are some areas that do use this kind of geothermal energy for water heating and power, but only in small places where the magma gets close to the surface and you don’t need such deep holes.