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Recommendations for Smart plug with energy monitoring

  • 06-09-2022 11:41am
    Registered Users Posts: 26,456 ✭✭✭✭

    Hi all I've got my solar PV installation booked but in the meantime before that happens I want to look and measure the energy the devices around the house are using. I'm specifically interested in my work setup (as I'll approach them if the cost is high) and what power the standby devices are using.

    I've had a look at Amazon and see a plethora of smart plugs with energy monitoring, has anyone any recommendations or should I just take a punt?


  • Registered Users Posts: 1,519 ✭✭✭THE ALM

    I use a couple of Teckin and a couple of TP-LINK/Tado, have had no problems with either

  • Registered Users Posts: 1,133 ✭✭✭DC999

    +1 on TP-LINK/Tado. Get at least 1 with energy monitoring (to see what uses what amount of juice). Then get the normal smart plug of that brand (without energy monitoring) when you want to make a dumb device a smart device (to see the time when dishwasher comes on say). Am sure there are others brands but TP-LINK/Tado are perfect for me.

  • Registered Users Posts: 1,113 ✭✭✭heavydawson

    I bought a load of TPLink Kasa KP115s a few months ago while they were on offer in DID Electrical.

    Plugs are good, but software is lacking. There's no visualization of the usage over the course of day, only:

    1. Today - Current consumption + Total Consumption
    2. Last 7 Days - Daily Average + Total Consumption
    3. Last 30 Days - Daily Average + Total Consumption


    so I ended up writing some code to poll the plugs over the network and write the current consumption to an InfluxDB database I have running on an Pi to track the usage over time.

    I wrote a small Python wrapper around

  • Registered Users Posts: 1,133 ✭✭✭DC999

    Hey, app /software on the TP Link Tapo (which is likely similar to the Kasas) is fine for me as plugged in 1 thing at a time. So if I turned on the dishwasher once in a day I can see what each setting on it uses (50celsuis, 65celsuis...). So can see the current usage and the total by day, week, month. Doing that device by device (for the ones that use more juice) tells you how many units you'll use per day, week, year. So that was enough for me personally.

    Fair play to you on the Python wrapper. Many levels above me :)

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  • Registered Users Posts: 26,456 ✭✭✭✭gandalf

    Cheers guys I've ordered a TP Link Tapo. At the moment I don't particularly want smart plugs, it's more to monitor and stats on the various devices around the house.

  • Registered Users Posts: 2,226 ✭✭✭bullit_dodger

    I think what you are looking for is being lost perhaps in your description. Yes, the TP Link, Meros, etc "smart plugs" are good way in monitoring the current as a smart plug. But what you actually want is (I believe) one of these,

    Electricity Usage Monitor, Electricity Power Consumption Meter Energy Monitor Timer Plug Watt kwh Analyzer Plug-in with LCD Display for Home Hotel : DIY & Tools

  • Registered Users Posts: 1,133 ✭✭✭DC999

    Yeah, Tapo have a model for that ('energy monitoring' one) and can be used as a smart plug too. Doesn't have an LCD display so have to check the app to see usage at the time. 'The Alm' added the link above

  • Moderators, Education Moderators, Home & Garden Moderators Posts: 7,831 Mod ✭✭✭✭Jonathan

    I have both Kasa KP115 (the one with energy monitoring), and a plug in monitor similar to what @bullit_dodger linked to above. The plug in monitor is better for getting instantaneous values (including power factor, which generally isn't available on the smart plugs), while the smart plugs are better for getting long term readings (mainly because of the convenience of just checking an app or home assistant).

  • Registered Users Posts: 2,226 ✭✭✭bullit_dodger

    Likewise, I've both. The Meros smart plugs which I bought as a "cheep-n-cheerful" alternative to the more expensive Philips hue ones are pretty good and I was pleasantly surprised to see that it did energy monitoring (the Philips one doesn't FYI). It's neat as I've few lower power (3w) or so lamps set to turn on a (sunset + 20) and of at (sunrise -20) and you can see the power consumption wax/wane through the year as the nights get longer/shorter.

    The monitor I linked above though in addition to what Jonathan saying about some useful things like frequency, voltages, power factor .... it also has a cost mode where you put in the tariffs (supports D/N) and it will compute the money being spent in real time and or over a day/week for the device plugged into it.

    Loads of different makes/models on Amazon, but they all typically have the same internals. Note the 4 buttons, and LCD screen being the same across them all.

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