HARMONY, Minn. – The deep and long Niagara Cave near Harmony is going off grid, kinda, with its own solar generators as a power source. The cave owner, Mark Bishop, said a generator on property he owns 20 minutes away in Preston is creating 45,000 kilowatt hours per year. The system puts more juice intio the grid than the cave’s visitor center and underground paths consume. “It’s our philosophy to do what’s right and protect the environment,” Bishop said.
Niagara Cave billboard. A tourist attraction with 30,000 visitors a year. In 2017 it was voted the second-best cave in the country by readers of USA Today.