Electricity is pretty cheap I understand, compared to the rest of the US. Due to hydro and solar?
So, perfect for a place that has lots of air-con and lights.
On my visit there we were amazed that we could swim in near freezing air temp in the huge heated outside pool (more than double the size of an olympic.)
Yes it's an extravagance, but at the same time where else might you get that experience except at natural hot springs locations?