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Gateway issues

Discussion in 'Tesla Energy' started by RyanAP, Apr 16, 2018.

  1. RyanAP

    RyanAP Member

    Joined:
    Mar 16, 2018
    Messages:
    7
    Location:
    Cheshire
    we have had our powerwall 2 for about 2 months now and we are confused as to why we are still drawing power from the grid. Our battery is nearly always fully charged as we have an 8kw solar array yet my meter keeps ticking over to the sum of 8-10kwh per day. I have just had a new non smart meter installed as I suspected a faulty unit but this seems to not be the case. Can anyone suggest a solution or have had similar issues? We are not a heavy power using household so I can’t understand why we are still using power from the grid
     
  2. Icebox_inel

    Icebox_inel Member

    Joined:
    Mar 22, 2018
    Messages:
    19
    Location:
    Puerto Rico
    In my case, a tesla installer came to review my batteries since they was uses .1kwh from the grid, while the powerwall was charging until reach 100%). He ran the wizard option and verified all the parameters. After that the system uses .1kw for day.
     
  3. miimura

    miimura Well-Known Member

    Joined:
    Aug 21, 2013
    Messages:
    5,521
    Location:
    Los Altos, CA
    You didn't give us much information to go on. The following information would be useful for forum members to help you.
    - Where are you located?
    - Show a 24 hour power flow chart from the Tesla app with all elements displayed.
    - What loads are connected to your utility meter that are not measured by the Tesla energy monitor?
    - What settings are selected in the app?
     
  4. RyanAP

    RyanAP Member

    Joined:
    Mar 16, 2018
    Messages:
    7
    Location:
    Cheshire
    Since speaking to Tesla, the engineers seemed to have done a software fix to the main coil sensor and the system seems to be working. My question still stands, does anyone else in the UK have a similar issue where the house continues to take a considerable amount of power off the grid even when the battery is fully charged. As we all know these power walls are not cheap and having spent a considerable amount to save electricity use from the grid it seems the system is not working as I would expect it.
     
  5. cwied

    cwied Member

    Joined:
    Jan 13, 2015
    Messages:
    845
    Location:
    San Mateo, CA
    How many kWh is your solar array producing right now, and how many kWh do you use in a day? Is it just a matter of not having enough sun to cover your daily power requirements? As miimura said, the chart in the Tesla app (or pvoutput if you've set that up) is very useful for analyzing why there might be a shortfall.
     
  6. RyanAP

    RyanAP Member

    Joined:
    Mar 16, 2018
    Messages:
    7
    Location:
    Cheshire
    I produce around 20kwh per day with solar, with a 13.4kwh powerwall we should have more than enough. My home uses between 15 and 20 kWh a day
     

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  7. RyanAP

    RyanAP Member

    Joined:
    Mar 16, 2018
    Messages:
    7
    Location:
    Cheshire
    As shown in the screenshot we produced far more than we used yet according to my electricity meter says we used 6kwh, which is more than the 4.4kwh the app says we used.
     
  8. cwied

    cwied Member

    Joined:
    Jan 13, 2015
    Messages:
    845
    Location:
    San Mateo, CA
    Looks like an issue with the configuration. Your powerwalls are recharging using "all solar" instead of "excess solar." As a result, you're pulling from the grid while the solar is producing. You might check the "customize" settings in the app to see if there is something wrong there. If not, Tesla might have to do some reconfiguring of your system.
     
  9. CA-Gbm84

    CA-Gbm84 Member

    Joined:
    Oct 22, 2017
    Messages:
    39
    Location:
    Bay Area
    There is no home load (blue) shown for most of the day. This means Powerwall has no visibility to what to discharge to. Most likely the CTs measuring the home load are in the wrong place or configured wrong in the commissioning so the are adding rather than subtracting.

    Call Tesla support - they may be able to fix remotely if its just a configuration issue.
     

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