A similar question was asked in a another geothermal post. https://news.ycombinator.com/item?id=32134418 https://news.ycombinator.com/item?id=32134418 The tldr

A similar question was asked in a another geothermal post. https://news.ycombinator.com/item?id=32134418 https://news.ycombinator.com/item?id=32134418 The tldr being that there is sufficient heat and we don’t need to worry about running out even if we tapped into a significant portion of it.