The wells could be for geothermal heating/cooling.
One of them probably is for geothermal, but, as a former neighbor who ran an HVAC business found out in the massive storm of March 1993, it won't do them much good in the depths of winter here. We're on top of the Cumberland Plateau and we tend to get fairly major ice storms every year. Power outages can and have lasted for weeks.
When I designed my house I intentionally went with a passive solar design. If the sun is out my house stays 70F on the coldest winter days. In case it is cloudy and cold, I installed radiant floor heat that has a wood stove loop, in addition to the LP fired boiler. The floor heat takes two small pumps to run, both together are not quite the load of a 60 watt bulb. It can easily be run off of a battery with an inverter for weeks, or off my generator. It'd take a pretty big generator to run a dual stage heat pump when line power is not available.....