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Octopus Powerwall integration
- Thread starter ACarneiro
- Start date
Pink Duck
Active Member
IO Flux was announced as having integration support for Powerwall (suspect shortly, as I didn't see any option to sign-up either).
Uncertain if this is just for PW3 API or for an upcoming upgrade to Tesla’s fleet API/SDK.
When I last looked into this I couldn't see how Octopus could automate PW3 to discharge on demand as there was no access to tariff offered.
Uncertain if this is just for PW3 API or for an upcoming upgrade to Tesla’s fleet API/SDK.
When I last looked into this I couldn't see how Octopus could automate PW3 to discharge on demand as there was no access to tariff offered.
Are the PW2 and PW3 so very different that they would merit completely separate APIs? Can it not just be "one big PW fleet"?
(He says, clearly not a tech guy)
phil4
Member
The PW3 still needs a Gateway at the moment (apparently software in the future may remove that need), so I expect it can be done for PW2 and PW3.
On the flipside there's a mass of installed PW2, and almost no PW3 at the moment, plus cost of living crisis, lack of grants etc.. may not be a good market to aim for. Flip side, is Octopus saying they're do PW3 installs.
Could be anything really.
However, doesn't work for everyone. I do too much EV charging and have too little solar to make Flux work even if I could, so I'm better using IOG off peak to run the house and charge the cars.
On the flipside there's a mass of installed PW2, and almost no PW3 at the moment, plus cost of living crisis, lack of grants etc.. may not be a good market to aim for. Flip side, is Octopus saying they're do PW3 installs.
Could be anything really.
However, doesn't work for everyone. I do too much EV charging and have too little solar to make Flux work even if I could, so I'm better using IOG off peak to run the house and charge the cars.
On the flip, flip side there is now no VAT on the batteries. 21% reduction is not trivial!
I, like you, would not change to flux. IOG is just too damn good for my usage pattern.
What would be perfect, though, is for Octopus to charge the car and the batteries simultaneously so that you don't have to worry about car charging slots during peak times draining the Powerwalls if you're not managing them manually.
(That was an appallingly constructed sentence, I hope you understand what I mean)
Pink Duck
Active Member
Think you misunderstood my earlier post. Am a tech guy! The PW3 local interface may offer more than PW2 but obviously both could be firmware updated remotely. Octopus only announced IO Flux support on the same day that PW3 started to arrive in the UK, coincidental or related? Like I said, I checked Tesla’s OAuth2 API not that long ago and couldn’t see a way that Octopus could automate the PW time-of-use prices and times, and Octopus also admitted they had no plans to support PW then. So some discussions must have been had with Tesla or Tesla have revealed to their clients an intended future update to make much requested capabilities possible. Indeed they have!
However, like you the IOG tariff still wins out if charging an EV. Thought VAT was 20%?
However, like you the IOG tariff still wins out if charging an EV. Thought VAT was 20%?
Last edited:
phil4
Member
Have either of you looked at the NetZero app for iphone. Somehow, the developer had managed to program the PW tariff screens with the days Agile prices, so there's clearly someway of feeding that to the PW API.
Netzero for Tesla
Optimize your solar/battery system with Powerwall automation, degradation tracking, solar generation analysis, a single-screen display, and more! Features: - Automate Powerwall configuration: backup reserve, operational mode, energy exports, and grid charging. - Track Powerwall degradation and...
apps.apple.com
I have the NetZero app and it seems like a nice GUI for my solar/Zappi/PW system. I see the automation tab, but I can't work out how useful that is... can it be used to tell the PW to charge during daytime cheaper rates with something like Agile?
I have IOG and fixed Outgoing which is fine for now but I'm considering ASHP which would greatly benefit from an automated charging schedule for the PW
I have IOG and fixed Outgoing which is fine for now but I'm considering ASHP which would greatly benefit from an automated charging schedule for the PW
squarepeg77
Member
If you use NetZero to push the Agile prices to your Powerwall and set the Powerwall app to Time Based Control, the Powerwall should charge during the cheapest Agile time slots.
This worked well for me until our solar started generating enough to cover our daily usage when I switched the Powerwall to Self Consumption.
One gotcha is that apparently the Tesla API doesn’t support negative prices, they all get capped to zero. So in the recent negative pricing event my Powerwall charged during the first time slot that it thought was 0p, not the one that was actually most negative. Hey ho.
This worked well for me until our solar started generating enough to cover our daily usage when I switched the Powerwall to Self Consumption.
One gotcha is that apparently the Tesla API doesn’t support negative prices, they all get capped to zero. So in the recent negative pricing event my Powerwall charged during the first time slot that it thought was 0p, not the one that was actually most negative. Hey ho.
squarepeg77
Member
The author of NetZero pointed me to this API: Tesla Fleet API (oops same endpoint as @Pink Duck posted above)Have either of you looked at the NetZero app for iphone. Somehow, the developer had managed to program the PW tariff screens with the days Agile prices, so there's clearly someway of feeding that to the PW API.
Netzero for Tesla
Optimize your solar/battery system with Powerwall automation, degradation tracking, solar generation analysis, a single-screen display, and more! Features: - Automate Powerwall configuration: backup reserve, operational mode, energy exports, and grid charging. - Track Powerwall degradation and...apps.apple.com
I guess it supports at least 48 time slots per day
I know and understand that you have some reluctance to using home assistant (I also did from experience years ago where it was a bit more of a fiddle) but this would solve your issue.
I’ve recently resorted to going back into it with a raspberry pi as to consolidate all my tech into one app and have not had to input any code yet.
As you might see from the picture, there is a discrepancy when my chargers are in use and that because the grid feed I’m using comes from the powerwall (directly from the gateway) and it cannot see them due to my wiring arrangements hence I don’t actually need to make automation so that it works not to drain the batteries but I will soon rectify this by getting a new in home display for the electric meter that will provide a local feed so that I can replace the current feed.
I have two Tesla integrations. One is local direct from the gateway (no lag and finer reading than from the Tesla app and another from the Tesla api same as what is on your Tesla app that allows for automation of charging and discharging the battery and setting backup etc.
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