Do you know what current limitations of residential geothermal are? From looking at https://www.energy.gov/energysaver/geothermal-heat-pumps https://www.energy.

Do you know what current limitations of residential geothermal are? From looking at https://www.energy.gov/energysaver/geothermal-heat-pumps https://www.energy.gov/energysaver/geothermal-heat-pumps it looks like you'd need quite a bit of space, so basically single family homes with somewhat of a yard. For bigger setups it would make more sense to capture the heat locally and distribute them to a whole neighborhood given how much deeper it would need to go.