Ed Hart
Member
I've been hearing conflicting pieces of information. I have Quantity 2 Powerwall getting installed on Wednesday next week. I live in a townhouse complex, so no Solar right now (maybe in the future). I wanted the Powerwall 2 because I currently am on EV-A because of my Model S.
What I want to do is to charge the two Powerwall 2 between 11pm and 6am @ $0.125 and use it throughout the day. My average daily usage is around 14kw, so that's why I went with two Powerwall.
I'm hearing that even with the latest firmware for the Powerwall, that Tesla does not yet support Time of Use Power Shifting, and right now all your an do is do whole home backup.
Is this true? All of the online documentation and the events they held at the factory in Fremont, indicated that we could do Time of Use Power Shifting.
I've tried searching in this group, but I'm seeing old posting that say the same thing, that it is supported by the hardware, but I can't find anyone WITHOUT solar who is doing this.
Can any exiting Powerwall user confirm this?
Note: When I run through my calculations based on PG&E web site for daily usage, I'm saving over 50% of my bill because during daytime hours we're paying upwards of $0.40/kwh, and with the Time of Use Power Shifting, I'll be consume stored energy at $0.125/kwh.
Note: We have AC, but we barely used it. The few days we do use it, we use around 20kwh per day, so two Powerwall will handle that.
Note: All the numbers above exclude the Model S because my Powerwall will be off grid, and NOT connected to the power walls (or that's my plan)
I have the same issues, so before buying, I asked this question and got this answer from an Energy Advisor at Tesla HQ:
Q: We are on TOU with SCE, so the challenge for which I would like to consider PowerWall is to bridge the costly evening hours from sundown to 10:00 PM, at which time my cost per kWh drops from $0.46 yo $0.11. Does the PowerWall software allow this to happen automatically?
A: Absolutely. You’ll be able to pre-program the powerwall at your own discretion. You can also go into your Powerwall app manually at any time to adjust and/or edit.