[nascarnation]

Back when nat gas was pretty pricey, the economics of geothermal for home heating (here in Indiana) was fairly good.
(although some folks had a lot more in unexpected repair expenses than budgeted)

Now with cheap nat gas I think the payback is much longer.
Of course the A/C side has to be considered also, but rising electric rates also affect the cost to pump the water for geo.

[ckilmer]

Now with cheap nat gas I think the payback is much longer.
...............
Judging by the map above, the best places for hot geothermal are out west where there’s not much natural gas.