Dborn
Confirmed
Does anyone have an email address for Powerwall support? I have the phone number, but I want to send some screenshots of my Powerwall performance. Basically I want to log my issue with discharge during off peak which continues.
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At the same time, it needs to be a sufficiently simple user interface for the mass audience that is definitely less engaged than us!
The time-based control interface to me is just this, typically Tesla, erring on the minimalist side, light on the detail but functional and very usable.
I would hazard to suggest that the Tesla TBC (and this is from someone who doesn't yet have access) is unable to make the right decisions without tariff rate information (including feed in rate(s)).While I appreciate that this is 'first release' stuff from Tesla, it is still frustrating that I have to 'game' the app to get what should be the expected behaviour is a not untypical configuration.
So after continuing to watch the behaviour of my system with T.B.C set to Cost-Saving, I've edited my "Price Schedule" configuration from reflecting my tariff (Off-peak, Shoulder, Peak) to only having Off-peak and Peak. I extended all of the weekday Off-peak periods into the shoulder and on Weekends turned on the "All Day Off-Peak" setting.
But Tesla need to get to that level of complexity (or I'll have to, and I'm just one guy doing it for free).
@AnthonyB Could this have the unintended consequence of the battery charging from the grid during periods it thinks are off-peak but which are shoulder on your tariff?
Entirely agree there still more development needed on the algorithm.
Predicting how much charge is needed as at the start of the peak period each day, requires predicting how much excess solar will be created that day, which depends on predicting load and generation that day. Some of these decisions have to be locked in by ~4-6am weekdays on the Ausgrid time of use tariff. To reliably cover peak period there's a trade-off between being conservative and often having excess capacity in the battery at the end of the peak period or sub-optimal charge/discharge outside of peak.
Perhaps sub-optimal behaviour is unavoidable in some individual time periods in the course of achieving optimal use over the longer term.
I have found the email for Australian support. It is [email protected].
I have sent them a few emails with screen shots. Yesterday I received a call from a support tech, with his direct email address. I have today sent him further requested screen shots. My hope is that now I have established communication, this will go to the programmers for tweaking/fixing.
It absolutely could. I'll have to monitor closely and see what behaviour changes, for better or for worse!
It'll all be publicly visible here (Anthony's Tesla Powerwall) and here (Anthonys House 6.930kW | Live Output) for those equally curious.
actually, that was dumb as I'm getting grid charging during what is in reality shoulder period.
I've changed it again so that the Peak periods are now extended to include the shoulder periods.
Yes, it does. I don't see a screen shot in this thread of the Customize screen with it scrolled all the way to the bottom, so here's one that shows it.Does the time-based control still have the backup reserve setting? That would be one way to suppress discharging at the wrong time.
I have noticed recently that the Powerwalls are not just doing hard transitions any more in TBC Balanced mode. When the Peak Period starts and ends it does to hard mode changes to start discharging to match the house and then stopping at the end of Peak, but the transitions for charging are more tapered now. See chart below. The transition from charging with All Solar to charging with Surplus Solar took about 30 minutes to taper. Previously the chart had step changes in grid load.
View attachment 297021
The tapering is new to me in Balanced mode. Today (Thursday) is the first time I've noticed it, and I look at the charts A LOT. However, it only tapered the charging, not the discharging. Since our consumption was very light this evening it kept discharging through the evening Part-Peak (9-11pm) and then abruptly went into standby at 11:00 for the start of the Off-Peak period.Are you saying that the tapering is a changed recent behavior in the balanced mode? Is the tapered behavior the same In the cost saving mode?
Tesla told me a few weeks ago that they're rolling out the TBC functionality to customers in stages, and that everyone should have TBC by April-end (!). I don't know how they've determined who is in what stage. We are still waiting. For now, I'm still using the app each evening to put our Powerwalls in Backup mode during SCE's nighttime Super Off Peak period, when we charge our two EVs, and I'm switching back to Self Consumption mode each morning. With TBC, I'm looking forward to having the ability to export all of our Peak solar generation, not just our solar surplus.What determines the availability of this functionality? My firmware fist went from 1.15.3 to 1.15.5 and I’ve yet to receive it.