I do have a gas heater on my central air unit, but "central" in my house means just the main floor really because the ducts are awful and might as well not exist on the 2nd floor. It seems like a high number, though, doesn't it? Elsewhere there's a comparison page that shows only this image.

What is the timescale for that comparison? I think it's just 1 month. What counts as a neighbor (Minneapolis, Hennepin County, all of Minnesota)? Who knows?

Maybe it's high because I live so far north with more hours of darkness than southern states.
Maybe it's high because I live where people are stuck indoors because of the severe cold for so many months.
Maybe it's high because I rely on my electric blankets for warmth and a 24-hour security light in my back yard.

I just don't know.