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EVSE energy usage when not charging

Discussion in 'Prime Plug-in Charging' started by MNdriver, Aug 5, 2017.

  1. MNdriver

    MNdriver Senior Member

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    In case anyone is interested, now that I have a handy kWh meter attached to my dedicated circuit, I monitored how much electricity was used by the EVSE when I left it plugged into the outlet but not the car. The kWh used rose from 7.12 to 7.17 over 28 hours.
     
    #1 MNdriver, Aug 5, 2017
    john1701a and bisco like this.
  2. bisco

    bisco cookie crumbler

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    would that be about a kWh/mo.?
     
    #2 bisco, Aug 5, 2017
  3. jerrymildred

    jerrymildred Senior Member

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    My Killawatt meter draws about 0.01 kWh over about 10 hours even with nothing pugged into it. I suspect the one you have is not that different, so at least some of that is probably from the meter. And, as @bisco said, it's a fraction of a penny a month. ;)
     
    #3 jerrymildred, Aug 5, 2017
  4. john1701a

    john1701a Prius Guru

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    Vampire draw is an interesting topic.

    Our 2 chargers both have Wi-Fi connections. That means there were always be potential for some consumption even when not plugged in. But then again, these older models (from just 2 months ago!) don't have indicator lights. The newest does... for Power, Wi-Fi, and Charging status.

    Realistically, the usage is trivial compared to what the car itself will ultimately consume.
     
    #4 john1701a, Aug 5, 2017
  5. MNdriver

    MNdriver Senior Member

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    I agree. I was mostly curious to see if this contributed to my 7.12 kWh measurement after my first charge, since that was more than I was expecting.
     
    #5 MNdriver, Aug 5, 2017
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