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Incorrectly setup CTs can be a really big problem! The Powerwalls do a very delicate balancing act and with the wrong CT data could put out the wrong power. You should show the weirdness to whoever installed your system. They need to send a technician out to diagnose and fix it. If you have a...

How much power does your home use? To be useful as a backup, you need enough Powerwalls to last through from peak power time until the next morning. Do you have any high current draw appliances like an Air Conditioner that you want to keep using during an outage?

I’ll be keeping a close eye on this thread. My UPS regularly reports over-voltage around 5:00a in the morning. It should be too early for solar, and I’m usually not up yet to investigate. The alert goes away after a few minutes. 🤷🏻

In fact, the most optimal algorithm for maximizing income is neither all TBC nor all Self Powered. The best algorithm is to use TBC during peak and Self Power off-peak. With this algorithm, fine-tuning utility rate settings is moot. During peak, you ideally want every Wh of solar to be going to...

Search these forums, there’s plenty of discussions on Powerwall battery wear. Factors like state-of-charge, temperature, charge rate, chemistry, etc… The same way a car’s odometer is an approximation on its relative wear, you can look at how much your Powerwall charges every day. It’s harder to...

Overall, PG&E are incentivized to downplay NBCs except where legally required to disclose. Search the following PG&E files for “bypass” to see how little is described. https://www.pge.com/content/dam/pge/docs/account/billing-and-assistance/vnem-brochure.pdf...

PG&E has “non-bypassable charges” that breaks the 1:1 nature of their so called “net metering”. It is better for your home to directly consume its own power, rather than “banking” it with the grid. Ideally, solar energy should go directly into powering the home. Excess goes to battery, and...

Yup. Been running “Self Powered” for this past week. Probably could have started earlier. Still sending excess power to the grid during peak. We just had a cloudy period and had only one day where the batteries didn’t fully charge.

The Powerwall is not computer UPS grade. Depending on how the grid goes out, you (and your electronics) may or may not notice the switch. If you have sensitive electronics, then you should still protect them with a UPS battery. I’ve had outages that knocked me off of a Zoom call. Other times...

This goes back to my “balancing a broomstick on your hand” analogy. While connected to the grid, the CTs monitor energy flow in / out from the grid. The TEG sends commands to adjust the PWs output voltage to push just hard enough against the grid to maintain a zero current. But it takes time to...

Yup! My TEG and Solar Combiners are all wired Ethernet. A shame the Wall Connectors don’t have that option.

Caveat: I am not an electrician! A 7V drop out of 240V is about 2.9%, right at the limit (3%) of acceptable loss for a branch circuit. Overall end-to-end drop should not exceed 5%, so it doesn’t leave much room to work with. The total distance between the grid meter and the batteries is also a...

This is why CT placement is important. When the CTs are placed on the left side of your diagram, the batteries will output whatever it takes to balance a net zero current to the grid. If the CT measures power leaking to the grid, then the battery voltage is too high. If there is current coming...

Update: WPA2/WPA3 transition mode doesn’t work with the Wall Connectors. I did an AP firmware update and the Wall Connectors dropped off. I now have to create a dedicated WPA2-Personal SSID for the Wall Connectors. 😡

Just to make things more confusing… I shifted my IoT SSID (2.4 GHz only) to WPA2/WPA3 transition mode and all my Wall Connectors dropped. Doing the whole 5-second button press, local WiFi to change the WiFi settings didn’t work. Then… I switched the Wall Connectors to my Guest SSID (2.4 GHz + 5...

The combined view appeared automatically. I don’t recall if there was any need to pair the wall connectors with the Powerwalls. Somehow Tesla needs to know that the Powerwall and Wall Connectors are at the same house. You can try messing with the settings. The Powerwall Settings page has a...

Just remind yourself what the Powerwall is really for. For you, does form override function or function over form? “It’s not having what you want. It’s wanting what you’ve got!” - wise words to live by and helps me put the rampant consumerism into perspective. Also, pay attention when your...

Yes, I have the Grid Charge option in San Jose.

As someone in the iOS app business, I want to temper folks’ expectations of what Tesla can do based on fundamental limits in iOS. You will notice that the widgets have a counting “X min, Y sec ago” indicator. This is because iOS does not allow live updates to Widgets(*). The data in the Widgets...

And you have done a full shutdown of your iOS device and then booted it back up again like the OP said? I didn’t see my Powerwalls either until a full shutdown and restart of my phone.

Argh! Curse you Storm Watch!!!! Why did you kick in NOW? After the power outage, and in the middle of peak hours too!!! 🤯

No Storm Watch, but I have a high wind warning and now the power grid is out. Glad I manually grid charged anyways.

I initially bought Eaton UPSs because they will not trigger until 70 Hz. No guarantees that whatever is behind it won’t not trip first though...

During the latest round of Pineapple Express storms, I have been tempted to grid charge to top off my Powerwalls. So I did some poking around to add my 1 cent to the debate. WARNING: IANAL! I’ve read municipal codes, IETF RFCs, and code diffs on github 😛 I am going to put some arguments in...

Reboot the Tesla’s MCU. Hold down both scroll wheels until the big screen reboots. Sometimes the WiFi driver goes nuts. Only a reboot can clean it up… for a while… Anecdote: My Model X kept saying a SW update was available, connect to WiFi for a week. Had to reboot the MCU and then it...

I would also add that utilities are starting to use batteries and solar to augment traditional spinning magnets. Both sources are DC and need to be converted to AC. So, your grid power is probably some mish-mash of “perfect sine” + “almost sine”. Once the power enters your house, after the...

I wouldn’t obsess over how rounded grid sine waves are. Who cares when the neighbor’s AC kicks in and the wall power sags? FWIW… don’t expect audiophile grade power or power response from a Powerwall. It couldn’t keep my networking equipment from rebooting (the one switch not behind a UPS) when...

My house takes 50-80 kWh per day, but the Powerwalls generally can carry me through the Peak hours. I upgraded from about 9kW to 16kW solar before the NEM 3.0 cutoff, so I am still getting used to the new capacity. In terms of efficiency (minimize loss and costs): 0) Use less power - duh! 1)...

I have a similar 16.5kW system, 3 Powerwalls, in California. I think your approach will depend on your home’s power consumption and what goal are you optimizing for. Some people want maximum independence, some want maximum profit, some want maximum power outage protection.

That is “Level 1” (120V) or “Level 2” (240V) NOT “1 or 2 EVSE”. It is a roundabout way to say “No Level 3/4 Tesla Superchargers / ChaDeMo / CCS” (400V+). It is one of those weird Oxford Comma moments: “Level 1 or 2” then “charging stations” meaning as many as you want just stick with Level 1...

My house was built with 3 EVSEs over 2 circuits (a pair are load sharing a circuit), they were clearly marked on the plans and passed permitting. Albeit, it was via Santa Clara County. This is the 1st time I have heard of such a specific limit. San Jose city council were just tooting their horns...

There is another thread about jumpstarting a Powerwall: Help: Powerwall Cold/Jump started without grid power [resolved] In extreme cases, if the Gateway is down, then it cannot command the batteries on. No battery, no reference AC signal. Without a reference AC signal, solar inverter will not...

You will have to ask Tesla that one. I am sure the raw information is there and they are using it.

I would expect that they use several techniques on a “first to appear” basis. I suspect the main check would be measuring total kWh charged / discharged which is the battery equivalent of “total mileage”. Of course there is also time since last replacement. They would also track how close the...

Out of curiosity, what worked best for you to cope with the 10-day wait?

If there is exposed conduit, you may want to have color matched paint available for them. Especially on the roof, where some homeowners might be nervous going up their to paint. Also, the last thing you need is an accident with spray paint on your new panels. The installers don’t have time to...

If you plan to have a wired Ethernet connection to manage the Powerwalls and Solar inverter, then you should have that setup and ready for them to pull through conduit. Remember that electrical code requires shielded Ethernet, at least the stuff that the installers pull throughout conduit and...

I am surprised as well, because the Powerwalls can as the solar to “curtail” their power by modulating the power frequency. Maybe your system doesn’t support that? Or isn’t configured to support frequency-watt curtailing? It can be a PITA to get the solar people to configure the right profile...

Does your Tesla support Charge on Solar? Do you have a Tesla Wall Connector that supports Charge on Solar? Do you care about Charge in Solar? That would require a Powerwall.

And for folks with 2 Wall Connectors, a new house diagram with a 2 Tesla garage! Now, they just need to support showing my 3 Wall Connectors!

Like this? https://service.tesla.com/docs/Public/diy/modelx/en_us/GUID-B04222E6-FA72-476E-8010-79B45620EB49.html

FWIW… my MX that was picked up on Wednesday had firmware 2023.38.200.2

@Rootcanal1 Any luck investigating your system? Is it setup wrong?

Final Update: Picked up MX today, they were able to squeeze my Friday appointment in today. They are burning the midnight oil to push them out the door. Close call with the FUSC transfer. Since I bought out the old MX lease, it was setup with a manual FUSC Docusign. They had to join the 2 back...

From my experience, if you smell rotten eggs, or natural gas, then it is imminent. Don’t smell? 🤷🏻 Maybe check the battery voltage with a multimeter? But I’m not sure what the minimum voltage is. It is pretty pointless to calculate the time of death. Anything you do is placebo...

First, I would only park it in a well ventilated place where it can be easily “jumped” and towed. Otherwise, if it’s gonna die, it’s gonna die whether you drive it or not. When it dies, it will die when you are parked. The safety relays to the main battery “click-clack” closed with 12V battery...

You have been assigned a VIN, which means there is literally a car rolling down the assembly line. Whatever physical design and components it needs are locked in. Delaying to January would only affect logistics and taxes. If Tesla announced new HW today, you are already committed to...

Update: Everything is happening fast and furious. From day-for-day EDD slips almost straddling the New Year. Then suddenly, USS waiver, VIN assigned, and now pickup as early as tomorrow. I booked Friday due to family logistics. Fingers crossed there are no major defects. 🤞 I suspect there was...

PF429 San Jose Standard Dual Motor 7-Seater Deep Blue Metallic 20” Wheels Cream Interior FSD FUSC Trade-in (at least in theory)

429 if that makes a difference.