Every so often, I think about how much electric power my house consumes at all hours, even when it’s the dead of night and nothing is really being used. So this morning, I went out and flipped each breaker off, one by one slowly, while watching the instantaneous kilowatt reading on the electric meter and taking observations.

This took about 20 minutes for all circuits, and then I honed in on the suspicious circuits, the ones which don’t have a known appliance like a fridge which should always be running. Years ago, when I moved into this house, I drew out a map which describes which outlets and appliances belong to which circuit.

The two suspicious circuits were the living room and bedroom circuits, and armed with a Kill-o-watt, I ended up finding that my very old Bose Companion 5 desktop speakers will draw 23 Watts doing absolutely zilch. And my 2018-era Roku TCL so-called “smart” TV draws 20 Watts when it’s “off”.

I’ve been meaning to replace the Bose speakers – due to a separate issue where the mute button only works half the time, and horrific Linux support – and a friend recently offered to sell me some reference speakers that I can pair with a Class D amplifier, one which has a physical on/off switch.

For the TV, I’m not exactly sure what to replace it with, since I was going to wait until it died and replace it with a commercial-spec display, one that has no remnants of “smart TV” anything. I don’t allow my TV to even have a network connection or WiFi, so it really shouldn’t be doing anything. So I guess in the meantime, I’ll just pull the plug when I’m not watching; at least it’s easy to reach.

EDIT: the TV is now showing inconsistent results. It will occasionally drop down to a more-reasonable 0.1 Watt. But it might also remain at the aforementioned 20 Watts. Not entirely sure what it’s doing, whether just sitting there or staying on for a while after turning “off” the TV.

  • fascicle@leminal.space
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    3 hours ago

    I put a smart switch on my Sony TV for the same reason, I noticed it would turn the sound bar on every couple of minutes even though the TV was off. With the smart plug I saw it would randomly use like 20-30w of power on and off all day so now when I’m not using the TV I use home assistant to flip it off and cut the power to the tv

  • Ciryamo@feddit.org
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    4 hours ago

    For PC peripherals like screens, printers and speakers you can buy a main-follow power strip. You plug your computer into the main socket and once the power strip detects a power drop off on that socket it disconnects power to all the other sockets. Saves the bother of having to turn on everything individually.

    • litchralee@sh.itjust.worksOP
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      3 hours ago

      I used to have one such power strip for my computer, but it quickly became infeasible for the following use-case: computer goes into sleep mode, power strip shuts off power to other accessories, those accessories drop off the USB bus, the computer wakes up from a change in USB state, the power strip turns everything back on.

      The Bose speakers were one such USB device that caused this behavior, and it’s hopefully the last such device that needs its own power.

  • superglue@lemmy.dbzer0.com
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    4 hours ago

    For the TCL Roku TV, there is a setting I believe that puts the TV into a very low power state. When you turn on your TV does it turn on really fast? If so, thats the reason. I think its called Fast TV Start in the power settings.

    • litchralee@sh.itjust.worksOP
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      3 hours ago

      Alas, there is no such option on my TV. The TV takes about maybe 10-15 seconds to turn on, which suggests that it’s actually booting up its embedded processor.

  • Alexstarfire@lemmy.world
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    5 hours ago

    You know, I was going to comment on how little those cost, but the I ran the numbers and was surprised. Nearly 400 kW a year, if left in that state 24/7.

    • Olap@lemmy.world
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      4 hours ago

      kWh perhaps? On 25p/kWh (about UK pricing currently) that’s about £100 per year, this does add up!

      • LainTrain@lemmy.dbzer0.com
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        3 hours ago

        Almost half the average electricity standing charge of approx. £196 per year (or £320 if they also have a gas supply which a lot of people in the country do). Or about 1.5% of yearly rent assuming small 1-bed in low demand area. Or around as much as 3/4 of elderly homeowners who own the housing and power they get for free via the WFP from our taxes.

        I’m sorry, good god our energy is a mess.