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I've now switched to the server API for settings and mode status (but local API for high speed monitoring). I would have switched earlier, but the re-write never made it to the top of the long to-do list; it wasn't broken so it didn't make a lot of sense to make the change while the local API...

Can't log in as installer without physically toggling switch on powerwall. Telsa, if you're paying attention (we know you sort of are, because you've made this change) - the reason we log in as installer is to automate mode changes because your options don't work with our tariff - because you...

I got updated to 1.45.2 this morning this morning at 7:40. Powerwall immediately started charging and charged to 100%, and stayed there, and then didn't discharge at all. App showed it in self consumption mode with a backup percentage of 0%. I put it into backup, and then back into self...

Off-grid | Tesla

That used to be the case for me, and so my charge strategy was simple - charge overnight to 100% every single night to maximise the possible feed in. Unfortunately, since 1 January, the cheapest Off Peak is now about 50% more expensive (in VIC) than in 2019. That means now that the strategy...

App 0% = GW 5% App 100% = GW 100% It is linear between those two points. App never shows less than 0%, but GW will show lower values, if the powerwall is discharging when it reaches "App" 0%, it may run for a few minutes before shutting down. Usually it will then recharge from the grid (at...

Yep, there's a thread going here: Complete now returning 200 (1.43.3) · Issue #26 · vloschiavo/powerwall2. It looks like calls to the API no longer stick. A second call might make the first call take effect, resulting in the behaviour you noticed.

Depending on whether peak and shoulder are close in price, or shoulder and (normal) off peak are close in price, you could consider reserving off peak in the app for special off peak, and combining two other price bands. But, agreed, bands alone are not enough - the app must also allow for...

Yeah, I've seen the same thing: In Self Consumption mode, discharging to match house load. Increase backup percentage from 10% to 15% (when current state of charge is 70%), and immediately goes into standby - now drawing from the grid at peak rates. Try setting backup percentage to 0% to force...

1.40.2 seems very broken. Like @eml2 I see changes pushed immediately, but then it looks like it crashes. I've set reserve to 0% in the app, and the web UI reports 5%, but powerwall charges rather than discharges, as if the reserve percentage is set higher than current SOC.

I'm on v1.37.1 in AU; do you have the Gateway 2 (where the gateway looks like the powerwall, rather than an ugly grey cabinet)? I'm guessing you're on Gateway 2, and if so, you might already be up to date.

Three phase power is surprisingly common in AU (I guess like split phase is in US) but of course the vast majority of loads are single phase. Three phase is typically only required for large AC. Solar, historically, is almost always single phase even when the home has three phase power...

Fix connectivity issues and enable 800A CTs. What's interesting about this is that the Neurio must be connected to the Gateway over WiFi to receive the firmware update. My Neurio was connected using a RS-485 harness, because the gateway could not see the Neurios, so I couldn't get configured...

Long time reader first time poster in these cost of PV threads. Does anyone know why prices are so high in the US? I am comparing to AUS. Is it town or utility permit costs that get built into the quotes? Are the panels actually more expensive? Perhaps due to tariffs? Is it too early in the...

Not trying to start a debate here - I am guessing this has to do with eligibility for some sort of tax rebate - but it does not make sense in Texas where there is so much overnight wind energy that it would make sense to store it and use it during the day instead of gas / coal.

Even better, always charge to 100% after 8pm, then standby until 6am, then self consumption. This would optimise the likelihood that you'll have enough energy to see you through to 8pm each night. You could script this with a switch to backup only at 8pm, and self consumption at 6am.

The part might be a wiring harness (might be modbus, don't know) that allows the gateway to connect to the neurio via a wired connection. My powerwall wouldn't commission, as it couldn't properly establish comms with the neurio. Tesla support told the installer to use another gateway, and when...

I have found it entirely depends on whether the powerwall is discharging when the grid drops or not. If it is discharging, most devices seem to ride through the voltage dip before it disconnects from the grid. If it is not discharging, it doesn't react quickly enough to start the inverter and...

If you're after a giggle, call them back, get them to repeat the claim and then ask them if they're familiar with the ACL. I have a much longer answer, but that's for when it's actually needed. (TLDR; rep wrong).

I've got a couple of UK users (@spoonwzd was using it - or at least I was trying to get it so that it could be used at one point) using my control service, and one thing that tripped me up is that if you don't have a backup gateway (this isn't available in the UK) then certain things break. The...

Confirmed.

I had a similar situation - it stopped responding to commands to set the backup reserve percentage - but the web UI was still working. I logged in via the web UI, and there was an upgrade staged, ready for upgrade. My guess is that when it downloads an upgrade, but is in use, it stops...

Starting, not finishing. First Sunday in October to first Sunday in April. 6 months - October November December January February March Compare to say California, where it is 11 March to 4 November - effectively 8 months of the year has DST.

Retailers follow the network's tariff definition. If the network doesn't follow DST, then the retail tariff based on that network tariff also doesn't follow DST. Your point is valid, but it is almost certainly true that all retailers will follow DST in the same way as your network does. So...

Amazing, really, but not all that surprising. Tesla's app is unable to display data until the day after daylight savings kicks in. Was the same way last year. On the other hand, the third party Powerwall Companion windows app can figure it out.

Password is serial number from inside of gateway door with a leading S (if the printed serial number doesn't start with S, add one).

Probably incorrect CT placement. If you have hot water, you may have originally had two dumb (basic / dial) meters - one for house load and one for controlled load hot water. If these have been replaced with one smart meter and a time switch, it is possible that there are two active cables...

Yes. My approach (since this is what I knew - I've long since stopped being a developer) was to write a windows service that gets the solar forecast for the next day, anticipated load data, and sets reserve percentages to get it to charge as much as required when required. Setup isn't as dead...

True, but similarly, every kWh you charge from solar, you only get 0.9 back as well - so that 1 kWh of storage has cost me 12.4c worth of feed in - so I'm back to more than one six-pack. And, trust me, with a full household, an electric oven, dishwasher, A/C in summer, heater blower in winter...

If you get nothing for exported solar, true. In my case (and I suspect @poindexter's) I get paid 11.3cents for exported energy, but pay 9.8cents for off-peak grid - so it is definitely better to charge from the grid overnight to full, then allow the PW to run in self consumption mode to offset...

Both. Outages when the PW is charging have caused disturbances. We didn't notice a two hour outage when the sun was down, and tests with load > PV opening the breaker have also been seamless.

My experience has been if the PW is discharging into load, it is seamless. If it is charging from PV or on standby (so the inverter isn't running), it takes longer, and some devices may notice the momentary loss of power.

No one has worked out how to do this - and current thinking is that it isn't possible. If you work out how, please share!

The solution to this is both simple and complex... The simple part is the app needs to support you putting in the price you pay for grid usage, and the price you get paid for grid feed in for each time band. Then the app will be able to prioritise charging, discharging, and reserving power for...

At a guess, you'd need two gateways - as it is the gateway that reports the version number at https://powerwall/api/status

Yes. Same as you, regardless of load, temperature, power state. It's a bug.

I never had the chance to test with 1.17.x as I jumped from 1.15.3 to 1.20.0. Once I got past https issues (trusting the certificate, using a hostname that matched a SAN in the certificate) and change to login on 1.20.0 (and the fact that operation start call used to work unauthorised, but now...

Thanks. From this it appears that you have a three part tariff, with shoulder on weekdays from 7:30 to 14:00 and again from 21:00 to 22:00, and the message defines peak and off peak, with shoulder "everything else"? Weekend is shoulder and off peak, and no peak period? Off Peak end seconds...

See Flat Out 4.840kW | Live Output (go for extended parameters view for the SOC trace). Each time the SOC curve flattens and it starts drawing from the grid where load exceeds generation, it is honoring the target.

Hi Silvia, I was successfully changing my reserve level on 1.20.0 (I would "chase" my current SOC by setting the reserve level to it, in self_consumption mode) so that it would charge off solar on the weekend, but not discharge the battery (thus avoiding RT losses, when my weekend peak tariff is...

I actually think this is simpler - they advertised it with support for TOU and control, and they have not delivered (Tesla Powerwall): "Supported Applications Solar self-consumption Time of use load shifting Backup Off grid". The current functionality of TBC (charge from off peak, lose 15% in...

One thought is two additional CTs, connected via a DPDT relay controlled by say an Arduino. CT1 measures nothing, CT2 is connected to your load. When you want to discharge, switch the relay, and it will appear as if your load has doubled, and the PW2 will discharge into that load, exporting...

It is - but the shield cover to make it compliant is out of stock, and I haven't bothered poking the bear while I still have API control.

Should be true, but unfortunately, not true always. Some gateways do not have a shield around the HV components, so there are live bare metal parts inside the gateway. Be very careful opening the gateway, as you could easily accidently brush the panel against those parts while removing it.

You're lucky! I see discharge into off peak - my cycle (in winter) is charge during off peak to 100%, but it will often discharge 10% one to two hours before peak starts into off peak. Needless round trip, and insufficient charge to see me through the peak period.

No, so this advice may not help, but it might. When using powershell on windows, you need to have both imported the certificate, but also set up a hosts entry so that powerwall resolves to the powerwall IP address - because the certificate is for a hostname of powerwall (and a couple of others...

The forced password change is for the installer. The installer can set the user password as well.

Time based control would probably help, but, realistically, your car charging should have been on a separate circuit not seen by your powerwall; you already had cars set to charge from cheap grid power. It seems hit and miss whether you have an installer who realises this and one who doesn't...

That's right - a UPS is designed to switch over (if it needs to switch) in less than one cycle, which is 16ms for 60Hz, and 20ms for 50Hz. Typically they do this by always converting the incoming AC to DC and then inverting back to AC, so if the AC drops, the inverter is already running and...

Confirmed. Use a host name.