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Yes. Ideally, not Cyberpowers, as their accepted frequency range is too narrow. Look for an Eaton UPS, which has an upper frequency range to 70Hz and will not have any issues with the PW raising to 65 Hz.

Seriously - the Ubiquiti gear is good, and I use them too, but I would NOT recommend them to provide comms to a PW2 gateway. In fact, to get a reliable connection, I had to fire up a legacy dumb access point on a different SSID just for the PW2, while running the rest of the house on Ubiquiti...

Fairly common - many homes get upgraded to 3-phase to service a new higher power aircon system, or (shudder) swimming pool heater, if its not done with gas. Lately, some large induction cooktops recommend the house being connected to a 3-phase supply, if only so the cooktop can be on one phase...

I'm not sure I understand the problem. If you are off-grid (the grid has been disconnected/failed) and the battery is full, then the solar inverters can't produce any more energy than your house is using at that instant. Sure, if you turn on a pile of things and make more load, your solar can...

I don't know when mine updated to 1.44.4 - only in the last day or two. It seems they've fixed the charging priority - 1.43 used to send a lot of excess solar out to grid early in the day, despite the battery being less than 30% and needing some charge. It would then switch to finally directing...

After a year-and-a-half, and correcting for the current SOC of 1.8 kWh stored, my stats are "energy_exported": 6319520, "energy_imported": 7035558.2, efficiency 89.82% (close enough to 90% for my purposes).

Note its not "either/or" - the PW2 gateway can be simultaneously connected via WiFi and hard-wired cable to your home LAN, AND through their internal 3G gateway to the cellphone network - up to all three simultaneously. It will use whichever provides the best connectivity at any moment to upload...

Mine went one better - installed a new LAN cable through the ceiling cavity to connect the Tigo optimiser control box to - which is mounted nestled within 1 foot of both the inverter and the PW2 gateway that both connect fine on WiFi. They installed the PW2 and inverter first, so they knew the...

Mine always locks on to the channel that the basestation SSID is being broadcast on - whichever channel number this is, it switches the internal 'TEG-XXX" SSID to the same channel. If something is changing to stupid channels, are you sure its not the gateway simply responding to your basestation...

Try Powerwall 2 Gateway API Documentation No wireshark required!

It IS possible - our powerwalls in Australia, and several other jurisdictions, are allowed to and do exactly this. It is administratively disabled in many USA territories, for reasons, possibly only USA-specific-tax-reasons.

FWIW, we don't have 1:1 net metering either. In fact, when I called the Tesla hotline (through to the US-based callcentre) and asked about the two TOU modes when they were first brought out, her response was 'You're in Australia? ah, probably those TOU modes won't make sense, since they are...

FWIW, I think I've figured out what the algorithm is trying to do in the morning. Overnight, between midnight and whenever the sun rises around 7am-ish, the system runs the house on some mixture of battery and grid. (you can argue that during off-peak it shoudn't ever draw from battery, but...

Yeah - Nah. There's plenty of PW2 batteries installed in Australia, and many other brands of batteries, and they work fine during power outages. Its perfectly possible and legal and common practice to have batteries back up the mains, just like most other countries. Its not dangerous, the...

No - they're installed in NZ, and throughout Asia, often as power backup for cellphone towers - and lately in South Africa also. Theres a list of international partners at the bottom of Redflow – Sustainable Energy Storage, if you get in contact I'm sure they'll be only too happy to tell you who...

For the 'customer' login level, the userid is your Tesla login email address, and the password is the last 5 digits of your gateway serial number

I'm in Australia, so my system can and does charge from the grid, especially during winter when the forecast for the next day's sun is dim. I have a 7.3 kWp system (22 panels each 335Wp) just over 1 year old. In this daily chart attached, the battery was at 30% at the midnight start of the day...

Suggest you your CT sensors sorted out first ASAP - then see if this is still a thing. It is possible that your CT sensors are including negative house load or some funky combination, so that what is measured as '15kW solar' is really '20kW solar plus -5kW house load'.

I'd suggest letting the system run for a week or two on 'self powered' until it learns a bit of history about your average usage profile, and then see if TBC does sensible things.

Mine the same - also in Sydney. Runs from grid during offpeak from 10pm until around 1am or so, then spontaneously switches to drawing down the battery - seems to be trying to time the switch to run down to 30% charge by dawn. Sometimes it mis-calculates, reaches under 30% a bit too early, and...

You might find some help at PVOutput

If you were generating 11Kw, the sun must have been out and strong, one wonders why the lights were on in the first place! The frequency shift is a problem only when the sun is shining and the panels are producing - and at these times, I would think the effect on lighting would be the least of...

The PW2 has a local JSON API you could use with an external IFTTT server. Much of the API is documented at vloschiavo/powerwall2 For this use-case, your IFTTT script could query http://192.168.xxx.xxx/api/system_status/grid_status, parse the returned string and make decisions depending on the...

Also, the telemetry from https://(PW IPv4 Address)/api/meters/aggregates includes a 'generator' section along with sections for site(grid), battery, load, solar, busway, and frequency reference - so there is clearly some planning and capability in place to support generators in future. Might...

There's often a difference between the options the hardware supports, and the subset the installer on the day can be bothered telling you about if some of the options are too much trouble or beyond their competency level. Mine was installed onto my WiFi (plus their supplied cellular), as a...

FWIW, With AGL's online system, I can download on-demand half-hour raw usage/billing data, including separated usage and solar feed-in, going back 2 years. Including separate readings for each phase back when the three-phase supply had a separate meter for each phase. And they do correctly...

FWIW, one of the changes in 1.34.3 (over 1.33.0, which I was on up to ~4pm local time yesterday) is internal reporting of voltages. I have 3-phase power to the home (nominal 240V per phase). Up to now, the gateway was summing the three phase voltages together and reporting the 'site voltage'...

I'm wondering what sort of overnight loads you're powering if multiple powerwalls are drained from full to empty by 2-3am?? Anyway, what do you have the 'Reserve %' set to? Perhaps setting 'reserve %' lower might allow you to get through to the next day.

My system has a central string inverter (6kW), fed by 7.4 kWp panels fitted with optimisers (largely because the 22 panels are on 3 different orientations, with half of them subject to some morning shade). I deliberately increased the panels from the original design knowing it would cause...

How long did you leave the system with the simulated outage? It seems regardless of the charge state, the PW2 will raise the frequency to get the inverters to stop - but if the charge is less than ~96%, then it should ramp the frequency down over the next 5 - 10 minutes or so and the inverter...

If your PW2 is connected to your home LAN, you can check yourself what frequency the PW2 is seeing/pushing. https://(PW2 IP address)/api/meters/aggregates will give you: site last_communication_time "2019-03-04T13:16:18.279886213+11:00" instant_power -2172.479960680008 instant_reactive_power...

Eaton 5S range (http://powerquality.eaton.com/Products-services/Backup-Power-UPS/5S.asp) auto-detects 50Hz/60Hz, and accepts a range from 46Hz - 70Hz. We're nominally 50Hz in Australia, but never had a problem with the PW2 ramping to 56Hz (as displayed on the UPS display). Always check the specs.

Would it be easier to put the entire Neurio sensor box inside the meter panel, and run an ethernet cable 40 feet through the attic? This is also likely to minimise the amount of noise leaking into the very long CT clamp cables that might make their readings unreliable.

There are settings inside the Tesla gateway for flipping the CT directions in software, so it may not benecessary to physically turn around the CT clamps in the meter box. Also, the Neurio can be removed from the gateway box - it communicates back to the gateway processor using cabled ethernet...

Depends on the unit, but a 'proper' UPS should condition the power and do a full AC-DC-AC conversion, putting out the clean normal grid voltage and frequency to within a few % accuracy regardless of the input conditions. But you should check the specifications and ask the store to be sure.

Almost! If the house is already being powered by the Powerwall at night, so its discharging anyway, there probably won't be a frequency bump if the mains fails. However, during the day especially if the battery is full and the house is exporting, the PW2 has to instantly raise the frequency to...

Its a common problem, in-home UPS's not liking the power coming from the powerwall. Often it can be traced back to the frequency - normal grid is 50Hz (or 60Hz depending on where in the world you are, but go with 50Hz for this example). However, if the grid drops the first thing the battery...

Yes - I'd be checking with the installer of your SolarEdge to see if it's high voltage alarm limit can be configured higher. Here is an article talking about the same issue, but in Western Australia and referencing Fronius inverters. In New Zealand, I dredged this up...

instant_average_voltage: 249.7544708251953, 249.7V is quite high for grid - my guess is that your system when exporting is driving the local grid voltage up until it hits 253V or so, hitting the upper threshold for excessive grid voltage in the inverter causing it to start throttling the...

Mine is set for TBC-Cost Saving, our off-peak is 10pm-7am. Almost always it discharges during off-peak in the midnight-to-dawn period. Oddly, it almost always switches correctly from discharge to standby in the evening at 10pm when off-peak period starts, but then shortly after midnight changes...

Your sensor clamps are clearly seriously screwed, confusing the battery management algorithms - while they might be able to sort it out remotely, its likely the clamps have been installed on the wrong wires in the back of your meter-box and someone will have to visit your house to fix them. 48...

I'd be getting the HWS and the circuit between switchboard and HWS checked by an experienced sparky. Mains voltage should not change when the HWS kicks in. If it is kicking up, that could indicate your wiring to the HWS is constricted/corroded/degraded and has significantly increased resistance...

Where are you based - which state? city, regional or rural? Your first problem is that your normal grid voltage is too high. In Australia, the grid is supposed to be supplying at 230V, reduced from 240V almost 20 years ago - see When voltage varies - Electrical connection. If your normal grid...

In Australia PWs are permitted to charge from grid - mine charges overnight from cheap off-peak grid power, if the predictive system thinks the next day's weather will be dim and there won't be sufficient sun to charge it up. Its not a technical/capability issue, its a local regulation issue -...

Link to article please?

It is certainly plausible. The Tesla TBC app has no idea of actual tariffs,and seems to assume US-style net-metering where FIT equals consumption price. It would make financial sense therefore during peak times for the system to export ALL solar to the grid (to maximise feed-in revenue at the...

Same here - since 1.28 and 1.29 I have't had any lockups, and enough time has passed that earlier versions would have had at least one lockup happen - so 'outlook is good' as the magic 8-ball might say

The bit where it says 'Enter https://teg-xxx, where xxx is the last 3 digits of the Gateway serial number.' could only work if you are connected to the PW2's internal TEG-XXX WiFi network. If instead you have the PW2 connected to your home LAN or home WiFi, the name 'teg-xxx' won't work and...

Dead easy to program - the controller allows you to set a 'blackout' period, a 'start hour' and a 'finish hour', for when you DONT want it to come on. For normal non-solar houses, this is to enable you to prevent it coming on during peak and shoulder cost periods - effectively do what the...

I went Sanden heatpump, ditched the controlled load circuit, and programmed the Sanden to come on at 11am, drawing directly from the panels as part of the house load - and backed up by the battery as well. It runs for 2 to 3 hours, pulling 1 kW - Almost exactly one quarter the kWh the old...