Wouldn't a geothermal tap create problems with sulfur emissions, or do those stay in the ground (where they belong)?
They just go down a couple hundred feet--like a well. They pump cold water in and warmer water comes up. The reverse in the winter. Put a heat pump on the top and you have home heating and cooling. It works almost anywhere.
They don't tap super hot rocks--just the normal heat of the Earth. It's why basements stay cool in the summer and warm in the winter.