Comment by acdha

> I always thought this method could be used to provide a/c for neighborhoods, operated as a neighborhood utility. I've not seen it done tho. I've seen neighborhood owned water supplies and sewer systems; it tells me the ownership part seems feasible.

I keep thinking this would be a great municipal code change: any time the roads are being built or ripped up for water/sewer maintenance, put in a ground loop and subsidize household connections for heat pumps so instead of having to deal with the marginal difference between 20℉ winter air you'd be working with 50-60℉ ground temperatures.