Is Your Idaho Power Bill Going Up Years ago when I moved here from Arizona I was relived when I received my Idaho Power bill. I remember thinking to myself... "This is a pleasant surprise". I was accustomed to having a $250-$350 bill in the summer and in the winter it would go down to about $100. Obviously summers in Arizona are extreme and the tradeoff would be that winters in Idaho can be pretty harsh. Regardless of how cold it's gotten in the winter, I've never paid $350 for one month of electricity in Idaho and that is definitely good news. The bad news is that things may be changing. According to ktvb: