It's unlikely that all of that energy was injected into the earth by humans. The high-pressure fluid injection generated cracks and lubricated the surrounding r

It's unlikely that all of that energy was injected into the earth by humans. The high-pressure fluid injection generated cracks and lubricated the surrounding rock, facilitating a release of existing stresses. The area around Pohang is riddled with faults. There's a lot of energy down there just waiting to be released. South Korea, like most other developed nations, is trying to increase the use of renewable energy. There are many hot springs in Korea, especially around active faults. Geothermal is an obvious candidate in those areas. Of course they're also doing wind and solar where feasible.