Chena's owner, Bernie Karl -- who's often as colorful as the lights themselves -- said the auroras sometimes spark the libido.

CNN: 'Dancing lights' draw thousands to frozen north

If the hot springs aren't for you, Chena also takes guests up a nearby mountain to observe the auroras from heated Mongolian-style tents called yurts.

CNN: 'Dancing lights' draw thousands to frozen north

The designers of the plant at Chena, however, managed to slash their capital outlay by substituting mass-produced parts from air-conditioners for the bespoke components of most geothermal plants.

ECONOMIST: Geologists are getting more juice out of the ground