More Powerwall Monitoring Options…

Yes, just in case your Powerwall2-monitoring-OCD is not satisfied by the Tesla App, or PVOutput, there is yet another 3rd party option available, and finally a use for the otherwise-banished Metro interface on Windows10.

This time I’m going to introduce you to Powerwall Companion, a Windows 10 “app” that can be used on your desktop with low impact, and also makes a great always-on home monitoring display if you have an older tablet or notebook going spare.


You get this from the Windows App Store here – it’s a 58mb download, a quick install, and it will update in the background if the Author, Thirty Hippos, adds new features. There’s even a Windows Phone version, if you are one of the handful of people who have this phone in Australia….

Once installed, add your credentials and it will retrieve the PW2 states and live data from your Tesla account – no need for a local connection to the PW2 via Wifi, which will suit people who were given the 3G connection by their installer.

Screenshot 2018-03-26 10.56.33

It has a default view of the charge state and power flows in landscape mode.

Screenshot 2018-03-26 11.30.17

It can be scaled up or down without quality issues. Here’s portrait mode above.

Screenshot 2018-03-26 10.56.40

There’s a graphing page that loads in a few seconds and has an export function. You can select the same date ranges as the Tesla official app.

Screenshot 2018-03-26 11.13.33

Screenshot 2018-03-26 10.56.49This shot above is the year to date since my install In June 2017. Unlike the App, it does not give you the totals on the screen though.

Screenshot 2018-03-26 10.57.03

There’s also a view for just the charge state of the PW2 over time.

The settings screen just has a place for your credentials, so no screenshot for that one. If it fails to work one day, as mine did, you have to sign out and sign back in again, as it appears Tesla expires the logins from time to time.

Even more monitoring from your power provider?

I use Powershop, as they have a neat phone app, and a website that shows your power consumption with half-hour reads – their prices are reasonable too, although you need to interact with them to buy “powerpacks” in order to get a discount off the base rates every so often.

Whilst they don’t show anything for the solar contribution beyond a FiT credit on the bill each month, it’s interesting to see what effect the PW2 had on reducing my grid-import via their handy usage graph:

Screenshot 2018-03-28 11.36.34

You can see when the PW2 was installed – just prior to July 2017 – and the steep drop-off in grid-import consumption that followed the install is really obvious. Note that my usage above includes charging an electric car overnight pretty-much every day for this period, so if you don’t have an EV, your grid-import usage would be even less, perhaps zero, after installing a PW2.

  1. #1 by Tom Hollander on April 4, 2018 - 10:17 am

    Glad you like the app Mike! The mounted tablet is very cool. I have something similar using an old Windows Phone.

    – Tom (app author)


    • #2 by Michael on April 17, 2018 - 10:26 pm

      Hi Tom,

      Love the app – a suggestion, if you read this – put a clock on the top-left area, in a font as large as, or larger than, the charge percentage. It’ll make the app more useful as a in-house display.


      • #3 by tomhollander1 on April 25, 2018 - 10:12 am

        Good call – I’ve just pushed out an update that has this as an option (selectable on the Settings page). Should be pushed out to you from the store in the next couple of days.


  2. #4 by Peggy on June 12, 2018 - 3:07 pm

    Hi Mike
    The Windows 10 App which I have setup on a Surface will not show today or yesterday. Is this normal.
    Just wondering if it anything to do with the difference in US time to our date and time here in Aus


    • #5 by Michael on June 12, 2018 - 5:23 pm

      The Tesla login token seems to be killed periodically, so I have found you need to log out and log back in again to fix this.


  3. #6 by Peggy on June 16, 2018 - 9:04 am

    Thanks Mike
    Nothing would work. However after a couple of days all just came together and is now O.K. once again. Technology going its own way. The windows App on my surface is just great.
    Thank you for such an informative site.
    Regards Peg


  4. #7 by mark s on August 9, 2018 - 9:10 pm

    this app seems real buggy. Played for 10 minutes and I am giving up, its slow and crashes a lot


    • #8 by Michael on August 9, 2018 - 10:46 pm

      Really – never crashed once for me. Only issue is Tesla expiring the auth token every so often, which requires a logout/login again to fix. Maybe there is something else wrong with your PC.


  5. #9 by Dave on September 22, 2018 - 2:19 am

    Hi, Installed this a couple of days ago and I wonder if it has command line instructions. I’d like to export Yesterdays data and append to a file. That way, If I put this in a scheduled batch file, I can build up a rolling file so that I can view the data each day in a graph and see what’s happening over a few weeks etc. Brilliant app – Thanks.


  6. #10 by Dave W Robinson on September 29, 2018 - 11:05 pm

    I may have done something wrong as my post never gets updated? I have a further question, on an old laptop in Windows 10 in safe mode, export always works, on my Windows 10 main laptop, export always crashes the app and only part data is exported?


  1. Monitoring Tesla’s Powerwall2 on | MikesGear
  2. Australian Powerwall2 Update – 3 months on | MikesGear
  3. Australian Tesla Powerwall 2 Review | MikesGear

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