My Gungnir draws 20W power per hour it's on. That's 480W per day if left on 24/7. At 10 cents per Kilowatt from Met Ed here in Reading, PA, leaving my G on costs me 5 CENTS A DAY or $1.50 per month. To balance this cost and the ecological catastrophe I create daily with my Gungnir, I park ONE spot farther away at work!!!!!!! I'll gladly pay 5 CENTS a day to possibily have 1 iota of better sonic goodness each time I go to listen. But more importantly, never turning it off saves me the caloric energy expenditure required to reach BEHIND my Gungnir to switch it on!!!!