So I have a netzero automation set that I believe should stop importing from the grid during peak hours. Maybe the other automations are conflicting? But for a little bit after 6 am every single day, I still import from the grid even though I have it set to time based control.
I know that it's not even a dollar every day, but this really bugs me. Any insight or advice would be appreciated!
Switched from 2 rate tariff to octopus agile, connected Tesla app with octopus to load the rates, rates displayed correctly. But the powerwall keeps importing during peak times, being fully charged to support the house during cheaper night rates. "Saving" mode, Grid charging is allowed, export set to everything (but only exports excess solar). Support keeps repeating "AI and learning", but nothing changes. Is it a false hope to think that Tesla can do a proper job and should I stop trying and move to predbat?
for the past week after a minor power and internet outage, our pw3 has not been charging nor has it been displaying grid usage. It will only display home and solar values that are identical to each other. the app only displays a yellow connection animation between the panels and the home, nothing flowing from the grid or to the pw3. My utility is still showing that I am generating and selling excess power to the grid, so i am hoping this is just a minor display issue, but i would like to be able to confirm the battery is charging and storing power.
I have tried resetting my gateway 2 by using a piece of tubing to push the button, i have done a full shutdown by turning off the pw3, gateway 2 breakers and ac disconnect switch.
i have also unhooked the taco small harness and reconnected. Nothing has restored the charging or the actual usage. the percentage on the power wall has been slowly decreasing each day. are there any other steps that I can do to possibly get this working again?
one note, even with everything off, the pw3 taco still has power from a 12v dc source coming from the gateway 2. any help would be great, thank you
My solar provider sent an email out saying that customers with existing PW2 systems (me) can now add a PW3 to their AC solar/battery system - no additional hardware required beyond the PW3 itself and both systems are fully compatible with each other.
Has anyone done this yet? how does it work? is it worth it? - I still have 3 years left on my PW2 warranty, so really curious if this will help me over the battery capacity shortage in the wee hours without replacing the whole system.
EDIT: Location QLD, Australia
We have a 24KW array with 2 Tesla PW2s. We got them literally days before the PW3s came out and were not backwards compatible. We want more battery storage. What’s the best option?
Edit: since the Powerwall 3 battery is fully depleted, my solar panels will not provide a charge. They must first sense a 120v60hz power signal from the batteries but since they are dead, I’m out of power until my utility provider comes back online. Even took the cover off my Tesla gateway box, stuck two wires in the positive and ground jump start ports and jumped it both with a car jumper and a fully charged 12v car battery. Gateway came on and detected in the all, but powerwall did not. All breakers on. Nothing tripped.
Do not manually turn your system on in the app when it gets down to around 5%. It needs that for the solar la el system to detect.
Morning.
My Powerwall 3 is completely depleted.
It got down to about 5% then shut off last night.
My utility is still out.
In a half dazed morning stupor the minute I woke up this morning, I restarted the Powerwall in the app.
It showed 0% battery but powered my house for about ten minutes before going off.
I didn’t think about turning breakers off.
Question: will my solar panels charge the completely depleted powerwall? I can’t turn it on/restart it via app. Tried manually toggling it off then on outside but no go.
Before it died I saw my panels were generating around 1kwh. House was pulling 3.5kwh for reference.
I flipped off all of the little breakers and left the main big one on.
Is it charging even though it’s dead or does it need to have a little juice to tell the panels it’s available?
I’m worried it will be useless until Monday when the utility estimates power restoration.
Lesson learned on my part if so.
Hi! So we just got our powerwall installed and commissioned this week. Learning as much as I can but have a few questions. As a background we are on a TOU plan with SDGE that has two super off peak periods. 10am-2pm and midnight to 6am.
Question #1 - why didn’t t our Powerwall charge to 100% overnight during the super off peak so we wouldn’t have to draw energy from the grid this am before our PV started production? Could it be because we are still in our learning phase?
Question #2 - why would the system do this? Our PV is producing enough power to power our house needs but it is using that to charge the battery and is pulling power from the grid using the non super off peak rate? Shouldn’t it just use PV to power the house and only use excess PV to charge plus grid starting at super peak at 10am? Again maybe learning mode thing?
Thanks for sharing your collective knowledge! I certainly appreciate it!
Mark
I'm trying to work out how to get my Powerwall and separate PV system play nicely together when I have an export limit. To be clear, the Powerwall is _not_ the PV inverter in my setup - I have separate micro inverters on each panel.
I have very recently implemented a 5kW site export limit. The PV system manages this by monitoring the grid connection and adjusting generation so the export is under 5kW. This is the only way of limiting export available to me.
The problem is the Powerwall, which is also aware of the 5kW limit. At the time the screenshot was taken, it's sunny enough that the PV system could be producing 6-7+ kW if it weren't throttling itself to keep under that 5kW limit...but it's only needing to throttle itself because the PW is providing power to the house, let alone using the excess to recharge itself.
My utility rate means 'peak' is between 05:30 and 23:30, with off-peak overnight. The Powerwall is getting the tariff information directly from my supplier. It seems to be a chicken-and-egg situation where the Powerwall is discharging because the export is at the limit and it's 'cost effective', but that very same discharge is preventing me from using PV generation that's being throttled, meaning the PW keeps discharging to maintain avoidance of peak, etc etc
While I've had the setup installed and working a decent while, it's only in the last few days that the export limit has been required - and will remain required unfortunately.
What should I be doing differently here? Any and all advice welcome.
I’m relatively new to PW3 (about 1.5 months) and am in Northern California with PG&E on NEM 3.0.
I haven’t moved back into my house because it still isn’t fully renovated, but am curious to learn when PW decides to discharge itself to the grid given I haven’t seen it happen yet. Given no one is living in the house, energy usage at peak hours (evening) is very low and starting this month (July) export rates can hit over $0.40 in the evenings so I’d figured the PW would decide to discharge itself to make some money given it can re-charge in the morning just fine. Will it only discharge to grid when the export rates are significantly higher than peak rates which are about $0.58?
I have the settings set to ToU/Savings and export everything is set to on.
Just want to check with people this should improve!
Had solar panels and powerwall installed last week and unfortunately for the first week only 2 of our arrays were working as the roofer had forgot to connect them properly.
The powerwall was working and learning with a much smaller solar production than we are now getting.
We are now producing about triple the kWh we were for the first week. We do not have permission to export yet.
The problem is the powerwall is still charging on the cheap overnight rate more than needed as doesn't seem to be aware it will fully charge during the day and keeps pulling a small amount from the grid during the day to power the house despite the battery being full and solar being capped due to no export.
Should this improve when we get export and when the powerwall learns we're getting more solar regularly?
Hi, anyone else in Perth West Aust with PW3 not providing backup power?
I have a cabin and recently had solar & PW3 installed. Power was out in the entire region yesterday and I was loving life running the well, listening to music, making cold drinks. Several hours into it I wanted to take a shower.
Solar had been generating enough to keep PW3 at 100% the entire day. I turn the shower on and it immediately trips the house.
If the only thing really drawing power is the on demand water heater, shouldn’t that just drain PW3 faster (but keep functioning?) or does this sound like a problem with a breaker or hot water unit? I’m really hoping I can shower when the grid is down.
I want to thank everyone who helped me Beta test SolDial over the past 6 weeks. This is not another one of the "built in a weekend with AI" apps you keep seeing here. This was built painstakingly over many months of coding, testing, optimizing, and finally beta testing. Download it on iOS Today! https://apps.apple.com/us/app/soldial/id6775575568
What makes it different:
See your whole system live — solar, Powerwall(s), the grid, your cars — in one flow view. Per-Powerwall health + per-string solar, with sub-minute updates pulled from your Tesla Cloud and your Gateway over LAN if paired (keeps working even when your internet's down). Flip a switch to pair - reverse engineered through painstaking trial and error on my own system. It even allows those with multiple systems to manage them all separately with a drop down OR even link "feeder systems" to main systems in order to show 1 view of your entire setup. No other app does this, not even Teslas. It works extremely well.
It reads your real utility plan from just your zip + a dropdown — 50,000+ rate plans (OpenEI URDB), TOU down to weekday/weekend, and full California NEM 3.0 export, vintage-locked to your PTO year (back to 2023). EV charging credits included.
Minute-level solar forecasts (NREL PVWatts + weather) calibrated to your roof from your own history — not a regional guess. We calibrate once you have a year of data or at signup if you start with more. One time only to align your forecast to your system. From there lower trending production shows you degradation.
And it doesn't just show it — an AI Autopilot runs it: schedules each car into your cheapest/credit windows, keeps the Powerwall in the right mode, preps for storms — never touching anything sensitive without your OK. Natural Language based automation creation makes setting up custom automations a breeze if you're more of a DIYer. You can create automations that trigger based on multiple cross/device criteria (powerwall is x, car is y, solar gen is z) then take one OR MORE actions (then set powerwall to a, car charge to b, send solar to c). It's infinitely flexible. Nothing like this out there today yet.
Check out the site here: https://soldial.com/
Can I set my Tesla Powerwall where it will only charge my Tesla Model S if the Powerwall is at a 100% charge? I’ve already got the car set to charge on solar. Note I also pay for NetZero.
Thanks in advance!
Hi r/Powerwall,
I'm a Powerwall 3 owner with solar and I've been obsessed with monitoring my system ever since it went live. The Tesla app is (just about) adequate, but I wanted something I could glance at and immediately see everything at once: solar generation, battery state, grid flow, home consumption, without having to interact with the screen.
I use Netzero for its automations and much prefer its main graphical view, but I wanted something more simple which I could leave on permanently in the home for my wife and kids to be able to understand without the potential for any settings being inadvertently changed.
To that end, I started by building a web-based dashboard using the Netzero API. I hosted this on a Raspberry Pi so it could be viewed from any device on the local network. I shared some screenshots with others and they expressed interest, but didn't have the technical knowledge to get it running for themselves.
So, that led me to develop Zap Panels - a mobile app (and moving to the Tesla Fleet API) which is now available across iOS and Android. Thanks to the feedback I've received, the feature set has grown somewhat, but it's still primarily aimed at a UK audience since that's where I am. It should work worldwide, but this isn't something I can test for myself.
Briefly, the app offers:
Core features are free to use, but a one-off £4.99 in-app purchase (14-day free trial - no subscription) unlocks:
If there's anybody outside of the UK willing to join the iOS or Android test group, I could look to improve the app's non-UK support.
The app is free to download:
To find out more, please visit https://zappanels.com.
I’ve got a Tesla Powerwall that’s been doing something strange for the last couple of months.
I have a Netzero automation that sets the Powerwall backup reserve to 35% at 12:00am every night. That automation runs successfully.
However, just before 6:00am every morning, the Powerwall starts charging itself back up to 60%, effectively overriding the 35% reserve setting.
Nothing has changed in my Netzero automation, and this behaviour only started around two months ago.
Has anyone else experienced this? Is this due to a recent Tesla software update, an Energy Plan setting, or something else that’s now overriding Netzero?
Any advice on where to look would be greatly appreciated.
Last night I had a power surge and internet router died. I replaced the router and tried the Tesla app back to the internet. I kept getting an error. Now the Powerwall and Wall Connector won’t connect. The Powerwall has flashing green lights on the them. I tried to power cycle the system with no luck. I even held the Reset button on the Inverter for 10 seconds and that didn’t work. Any suggestions on how to get the Powerwall to stop flashing green without having to contact Tesla for help?
Background: we had 2x Powerwall 3 fitted in 2025 and added a 16kw solar array in 2026.
The 16kw is split 8kw on the south facing elevation and 8kw on the north facing elevation.
Problem: not long after installation the primary powerwall tripped. The installer came back and split the south array over 2 MPPTs inputs, leaving the north array on the 1 remaining input.
Today: in the midst of a UK heatwave, the solar generation abruptly stopped at 1pm (peak generation) and it tripped the PW.
I spoke to the installer who suggested they miscalculated the load that the north array was capable of. As a result there was an overvoltage on the MPPT which likely caused the trip. Normally they’d split the array over multiple inputs but the PW only has 3. Annoyingly the secondary PW (full featured not an expansion) can’t be used.
Their suggestion: as we still have scaffolding up they’d come back to disconnect 2 of the 515w panels to reduce the voltage on the north array. They offered to refund me the difference of the panels etc.
This makes sense logically as Tesla One is reporting 575v (limit is 600v) but I’m finding it hard to justify given that this weather is very much an exception in the UK (33c).
I’m concerned that I’d be effectively “giving up” 1kw of potential generation all year round (albeit not full because of the orientation, granted).
Do I have any other options? Should I take the hit for the 1 or 2 days where there’s a red weather warning and switch off the north array at the DC isolator if I’m worried, or do I take the hit year-round with the security it’ll never trip?
I recently built an app using Replit, Teslemetry, and Resend, and overall it was a pretty interesting experience.
The primary goal of the app is to automatically charge my two Tesla Powerwall 2 batteries during off-peak electricity hours, but only when it makes sense.
The app checks whether the current solar irradiance is below 150 W/m² and also looks at the next day's weather forecast. If the forecast predicts poor solar production—such as heavy cloud cover, rain, or snow—it charges the Powerwalls overnight when electricity is cheaper.
One thing I really liked about Replit was how easy it was to describe what I wanted to the AI agent. It did a good job generating the initial application, and once I had a working version, I even asked it for ideas on how to improve it. It came up with a lot of useful suggestions that I hadn't considered.
The biggest challenge came during debugging. I spent a lot of time getting the AI agent to fix features that either weren't working correctly or weren't behaving the way I expected. Those back-and-forth iterations consumed credits pretty quickly. In the end, I spent close to $100 in AI credits.
I'm still experimenting with Home Assistant Green to accomplish the same automation. My hope is that, once everything is configured, it will provide similar functionality with a much lower ongoing operating cost than relying heavily on AI-assisted development.
Overall, I'm glad I built the app because I learned a lot, but if you're planning a similar project, it's worth budgeting for AI credits—especially if your project requires a lot of troubleshooting and refinement.
This is one of the biggest MAP Energy updates so far, with a huge amount packed into a single release across both iOS and Android.
✨ What’s new in 1.6.0?
📅 Day of week support added to manual tariff setup
📱 Improved iPad and Android screens for a better tablet experience
💡 Ideas Lab organisation
✏️ Optional naming for automations
🔴🟢 Grid import/export colours as a new option on the Live View display
🔋 Estimated battery degradation
🔋 Individual battery SoC display
🚗 IOG automation without a supported EV charger (load must be seen in house use)
⚙️ Placeholder screens now guide you directly to settings
🎛️ Consolidated Live Action buttons
🎨 More polished UI throughout
📊 Better graphs
⏱️ Time periods in automations
☀️ Solar forecast triggers above/below a set value
🚨 Improved multi-automation failure marking and automatic retry
🔐 Easier to read app permissions
🎁 Free hours support as tariff overrides on history
🗓️ Billing month support for calendar/history
🇦🇺 Amber Electric supplier support
⚡ EDF integration with Smart Slots support
☀️ support to use your Solcast API to see your forecast in the app
🛠️ General bug fixes and performance improvements
A massive thank you to everyone who has suggested ideas, reported issues, tested features, and helped shape MAP Energy into what it is becoming. 🙌
A lot of this release has come directly from user feedback!
Available in the iOS App Store and Google Play Store 👍🏻