I got my first electric bill for my new house and suddenly I'm on a
I broke out my trusty
and measured how much power the various bits of my new
audiovisual rack use.
Idle, my rack consumes an astonishing 80 watts. That's like
leaving a lightbulb on all the time, and at my punitive rate of $0.35
/ kilowatt-hour it's costing me $20 / month just to own this rack.
What's it doing?
- 38W Tivo (Standby mode saves 2W)
- 35W Five Sonos
- 4W Network switch
- 2W Superfluous power conditioner lights
Of course, it takes more power to actually use the gear.
- 32W Listening to music upstairs (1¢/hr)
- Running three amplified Sonos zone players
- 85W Main amplifiers (3¢/hr)
- Just turning on the amplifier and the subwoofer amp,
not actually using it.
- 4W Watching TV
- The Tivo consumes so much power when idle that actually watching it doesn't add much. Of course, I need the amplifiers on too.
- 25W Watching Blu-Ray (1¢/hr)
- The disc player is hungry. It seems to use this much power even
when sitting idle at a disc menu.
- 184W Playing GTA4 on an Xbox 360 (6¢/hr)
- What an inefficient beast. It generates so much heat I have to
leave the door open, too. Saves about 30W when sitting idle on the
I don't begrudge the operating costs when actually doing stuff, even
the Xbox. But 80 watts when idle is terrible. The Tivo is never truly
idle, I can understand what it's doing with the power. But why do the
amplified Sonos players consume 7W each when doing nothing? At least I
can turn off the stupid power conditioner lights.