They can and spin the turbine to produce electricity at existing or new power plant. One of my sons was a drill engineer offshore Exxon Guyana now with a geothermal start up. They are working on first drill in Kenya. Thing about geothermal vs oil, you know the hot rock is down there but how hard will it be to drill? But if you want to lose money, invest in a geothermal startup, there's so many guarantee most won't make it.