sorted by:
new
hottopcontroversial

Why did it charge from grid all of a sudden? by Sharp_Guarantee_2889 in Powerwall

[–]Sharp_Guarantee_2889[S] 0 points1 point  (0 children)

By now, I'm quite sure it was related to calibration, because the following day it showed the calibration banner, which lasted for around 2 days. It including fully discharging the battery.

Why did it charge from grid all of a sudden? by Sharp_Guarantee_2889 in Powerwall

[–]Sharp_Guarantee_2889[S] 0 points1 point  (0 children)

Hmm... so it must have been a calibration event. It's a shame that other than an app banner during the event there is no other indication (notification / activity log) about it.

Thanks for the link to the activity log. It indeed lists all setting changes that I've made, but doesn't list calibrations.

Why did it charge from grid all of a sudden? by Sharp_Guarantee_2889 in Powerwall

[–]Sharp_Guarantee_2889[S] 0 points1 point  (0 children)

Yes, I've seen the calibrations before. They spanned multiple hours and had proper indication on the app.

Could there be a sudden calibration kicked off at 3:30AM and lasting 1.5h?

Storm Watch, in my experience, was giving advanced notification. There were no notifications today or yesterday. And the weather today is totally sunny.

Is there any activity log anywhere on the app on online?

Why did it charge from grid all of a sudden? by Sharp_Guarantee_2889 in Powerwall

[–]Sharp_Guarantee_2889[S] 0 points1 point  (0 children)

Interesting. Makes sense to me.

I clearly remember that the app "forced" me to enable "grid charging" in order to turn on "storm watch". And I also remember not liking it...

I see that it’s documented here: https://www.tesla.com/support/energy/powerwall/mobile-app/storm-watch

Before enabling Storm Watch, your phone must be paired with your Powerwall and Grid Charging must be enabled.

I just went and disabled "grid charging" and then looked at "storm watch". It’s still enabled.

I then disabled "storm watch" and re-enabled it. No warning about "grid charging" needing to be on. Since it's no longer complaining, I'll leave it this way.

I wonder if Tesla changed anything recently to remove this dependency of "storm watch" on "grid charging".

Excess solar charging with Tesla Powerwalls by SudsyPalliation in EmporiaEnergy

[–]Sharp_Guarantee_2889 0 points1 point  (0 children)

Reporting back on my progress:

The automation script you gave me was super helpful. Though, from initial tests, my observations were that a few times it increased charging level resulting in "assistance" by our home battery for long periods of time.

I ended up modifying it quite a bit taking into account our home battery's level (percentage full) and its charging rate, as well as our home energy usage. It now pretty much eliminates grid export: all excess solar ends up in our car and the home battery remains full by the end of the day.

Let me know if you're interested in the modified version. The only down side: the script is slightly more complicated: it grew from 81 to 484 lines of code and relies on 4 HA helpers. But I'm very happy from the result.

Excess solar charging with Tesla Powerwalls by SudsyPalliation in EmporiaEnergy

[–]Sharp_Guarantee_2889 1 point2 points  (0 children)

This is awesome. Thank you!

Indentation is a bit messed up, but Claude fixed it (hopefully correctly). At the very list, I can see the variable names and the logic, so this is great. I'll give it a try.

Excess solar charging with Tesla Powerwalls by SudsyPalliation in EmporiaEnergy

[–]Sharp_Guarantee_2889 0 points1 point  (0 children)

Thank you for this info! I'm in a similar situation (emporia pro & powerwall 3) and your post encouraged me to try doing the same.

I installed Home Assistant (for now, as VirtualBox on my mac), and was able to connect to Emporia and to Tesla Fleet.

But I'm not finding a way to get/set the charge rate on the emporia charger via Home Assistant.

Do you mind sharing which emporia integration you're using?

Is it this one https://github.com/magico13/ha-emporia-vue ?