In this video I'm going to show you what I believe is a bug
I've found in the Tesla app for the Powerwall 2. So let's get to it.
John Tisbury here. If this is your first time here and you want to learn more
about my Tesla Powerwall and solar installation. Plus I also do videos on
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any of the new content as I upload it. This is not actually a planned video and
it came about because of an error I believe I found within the Tesla
Powerwall app on my smartphone. So I wanted to take you through it to
highlight what I believe is the problem and to see if anybody else has that same
problem. So if you do then perhaps you comment down below and they'll be useful
from that perspective. I have logged the query with the Tesla support. So wait
here would see what they say, but I thought I'd just reach out from
the wider YouTube audience. Because I know a lot of you have got this
installation and got the Powerwall and use the app quite extensively so they'll
be good to get your feedback. So what is the problem I identified?
Well it concerns... I'll bring it up on screen so you can have a look. From the main menu, if you go
into the Performance figures or analytics. So we click on that... and it
shows me performance for the day initially. So today for instance we are
on 93% self-powered and that splits between solar and the Powerwall. And you
can see there is 48% and 45% respectively. And you
can then also change the view. Currently at the top here I'm looking at today. So if
I look at yesterday and you'll see that it shows zero, so nothing on solar and
nothing on the Powerwall. Which isn't quite what I was expecting. Luckily I
took some screenshots yesterday, as I generally do now and again, sort of dip in
and out of the app to keep an eye on it and see what's happening. And yesterday
we had a day where we had 21kWH of solar generation so
it's a really good day for solar power and we had a 100% full
charge in the Powerwall. So it's just bring those up for you... got them as
screenshots. So that's yesterday, so it's showing here that to the Powerwall there
was 9.6kWs, sorry 8.5kWh, reading the wrong bit. From it was 9.6kWh. For
instance, from the grid we only pulled 300 watts yesterday. And the house
consumed 19kWh. So I know that we were in a percentage of a sort of 95-98%
self power, if not slightly higher. And the screenshot I going to show
you is this one... hang on... it's this one here. So that's what I took yesterday. This was at 18:47pm
18:49pm. It was when the sun had gone down so it was end of the solar day.
The Powerwall is showing 91% charge there and if you look down in the
performance area it's saying 98% self-powered today, so that was yesterday.
And looking at the stats on that I've just run through for you. So home
usage 19kWh, solar 21.3kWh, generated from the Powerwall 9.6kWh
because previous day we'd also had 100%
fully charged so that rolled over onto the next day before the sun came up. And
also have obviously after the sun went down at the end of the day. And we sent
to that Powerwall to get 100% charge 8.5 kWh, so it's about sort
of 50% charged and the beginning of the day, or when the sun
come up. And then as you see there from the grid, 300watts. Ao not very much
at all and we sent to the grid 3.7kWh.
Those are the correct figures that's why I expected to see, and correlates with my
meter reading. But the performance from yesterday is wrong. I was expecting to
be sort of 95-98% self-powered, and as you see bring up the screen again
it's showing yesterday was zero. So nothing at all which is clearly wrong.
I took a couple of screenshots this morning tweeted those across to Tesla
Support so I'm waiting to hear what they say about that. Once they've had a look
at it. So the only thing that I believe as may have triggered this is
the fact that last night we moved on to British Summer Time here in the UK. So we
moved our clocks forward by an hour, and that may have upset the the analytic
recording within the app. I don't know. On my iPhone it's automatically updated and
I moved an hour forward but I don't know how the app is written and whether the
app also picks up on that change in British Summer Time from Winter time.
I guess it probably does because we're not the only country that does it and I know
this is sort of configured the UK, it's aware that we're in the UK.
I'll wait to hear back from from Tesla and let you know once I know what their
response is. But I was interested to look at it and I'm wondering what impact that
has on my weekly stats. So if I look at my sel- performance for a week it's
currently showing at 93% for the week. We'd had a super week in terms of
solar generation. But 50% of that is come from, 56% of that has come
from solar, 37% from the Powerwall. But I'm wondering if that factors in the
actual figures from yesterday I'm always taking them as a zero. I'll have to have
a look at my spreadsheets and I wish I keep a manual record of each day and
then work that back to see what is doing. So yeah, so if you have similar
problems let me know be really interested to hear about it and drop
some comments down below. As ever ,thumbs up, thumbs down, on this. We really
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consider subscribing that really helps the channel grow. And yeah I shall see
you on the next one. Alright take care bye.