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Powerwall Manager v0.3.60 is now available and includes the following changes since v03.30: v0.3.60: Added Storm Watch Active status, added delta Watt threshold preference setting for power reporting, enabled dimmer level for reserve control/status using the base Powerwall device, added Child...

Powerwall Manager Version v0.3.30 is now available. This update includes the option to specify a refresh token instead of an access token, eliminating the need to enter a token every 45 days. The update also includes the ability to command and schedule off-grid operation. Off-grid commanding is...

Full support of the local gateway interface is on the to-do list of potential enhancements for the Powerwall Manager (when running on Hubitat at least. SmartThings currently appears to have an issue with handling the local gateway self-signed certificate). The local gateway API is different...

I'm not sure why, but with Self-Powered 100% Reserve, every once in awhile some solar was being sent to the home instead of charging the Powerwall. I didn't investigate the few times I saw this happen. It may be that the Powerwall didn't really accept the 100% reserve setting, even though it...

I can't say I've tracked my bill closely as of late, but I'm pretty sure based on my first few bills that it's the former, with the caveat that your demand is averaged over the number of on-peak days for the billing month. Weekends and holidays don't count, so it's typically around ~21 days each...

I would also encourage those in SRP territory with solar and Powerwalls to also look at the E-15 Average Demand Plan rates. I do not believe I have had a bill that would have been lower on E-27 since the E-15 rate plan was implemented about 1.5 years ago. E-15 has higher demand rates than E-27...

@Odiemac, are you still having issues with the Powerwall Manager app? The auth token refresh logic for the app was updated/improved in January, so if you are running an earlier version than v0.1.8e.20200104 (Jan 04, 2020) this could be the issue.

That's great! A 39% daily cost reduction and ~5kW demand drop is nothing to sneeze at considering the 4 A/C units, single Powerwall and no solar. Are you still scheduling the hourly reserve % reductions with the app?

A Stormwatch grid draw during peak hours would result in a huge demand charge with my utility demand rates as well. If you have a SmartThings or Hubitat Home Automation hub, you can schedule Stormwatch to be off during your utility peak periods with this app: Tesla Powerwall Manager app for...

Looking at the data for yesterday at least (I love looking at that stuff), overall, the single Powerwall handled your peak period demand as good or better than my expectations. As you saw, it looks like that peak demand for the day was 1.7kw, but would have been roughly 4.7kW without the...

I have occasionally seen the PW drop a little below the set reserve level, but it's probably less of an issue with solar, since the PW will never draw from the grid for battery charging. The Tesla Powerwall firmware may need to handle grid only hysteresis situations like this a little better...

Since you don't have solar, you may be fine not ever setting the reserve to 100%. I admittedly am not very familiar with how exactly the Powerwall operates with grid only and no solar charging. With solar, I've found that the TBC mode "smarts" don't always work/predict well and I sometimes begin...

I generally have zero demand each month now that I'm running in Self-Powered. Considering you have 2 Powerwalls, a single AC, and a one hour demand period, I'm guessing you'll get pretty close to zero demand even in TBC mode. Since SRP uses 30 minute demand periods, a single demand spike for me...

Yes, I'm still using Self-Powered. I schedule reserve in the app to 0% before peak and then back to 100% at peak end. I probably should be more concerned about a missed command, but since I'm also running the demand manager software in the background, if I were to get a demand spike due to the...

This schedule looks good to me for APS 3pm-8pm peak hours. You'll also want to add a return to 100% probably at 8pm. I'm really interested in how this works out from a demand shaving perspective. Good luck!

I put together the following cross-platform app that provides monitoring and control of the Powerwall through both the SmartThings and Hubitat hubs: Tesla Powerwall Manager app for SmartThings (and Hubitat) Hubs - DarwinsDen.com The app allows you to automatically command smart devices and...

Yes, the Powerwall Manager app can currently support up to 7 different schedules for commands to the Powerwall to include Reserve % updates. One concern though is with how long it takes the Powerwall to respond to the reserve % command change. With the recent Powerwall firmware updates, I know...

You may also want to consider getting a quote from a 3rd party installer. I had solar and Powerwall installed by Sun Valley Solar Solutions over a year ago and they did an excellent job. They are a certified Tesla Powerwall installer. I'm in Mesa/SRP.

This has been my experience as well. I'm not sure the gateway has ever reliably automatically joined my wireless network after rebooting my home router. My wired ethernet connection though has been rock solid. If you're concerned about security and your Tesla gateway is readily accessible from...

Thanks. Really appreciate it. Yes, I've found that self-powered does a better job than TBC Cost-Saving as far as quickly ramping up to cover usage spikes. I've been using the Powerwall Manager to define Self-Powered mode schedules to match my utility peak periods and it has eliminated that last...

Thanks for the feedback. That's a great idea. It would be very handy to have a way of viewing actual cumulative savings achieved using the Powerwall and/or solar from a production and load shift (and maybe even a demand fee) perspective. I'll add it to the list of potential enhancements and give...

Yes - unfortunately, I don't think Nests are going to work anymore for new users unless/until Samsung/SmartThings works something out with Google. There are other cheaper SmartThings compatible Z-Wave thermostats in the $75 range but they're not as nice as the Ecobees and I am not sure anyone...

Congrats on your founder's PW2. I'm interested in hearing how the Powerwall works for you for demand management without solar. The demand management app right now is more reactive than proactive. You choose a demand max kW goal that you would like to not exceed, say 5 kW. The app continuously...

I gave this a little thought and it wasn't that difficult to modify the Demand Manager app to support multiple thermostats/AC units. The logic isn't overly sophisticated, but now if the app needs to raise the set point of a thermostat to manage demand to meet you defined demand goal (and more...

Just as with @Chancellor32, the solar, PowerWall and Demand Manager software pretty much squashed all my SRP demand charges for the summer. My demand usage and charges for the summer months averaged around 0.3kW and less than $5 per month. I've never had an on-peak energy charge, only surplus...

One caveat to this. That is true for TBC cost saving when in a peak period. TBC cost saving in a shoulder period (not peak or off-peak) behaves similarly to self-consumption.

Here's a link to the Powerwall integration with SmartThings that @Chancellor32 mentioned: Tesla Powerwall Manager app for the SmartThings Hub - DarwinsDen.com The app/driver includes some built-in options to select smart devices to automatically turn off in the event of a grid outage, but you...

Yes, SRP uses rigid, on the hour and half hour (2pm, 2:30pm, 3pm, etc) periods for their demand calcs. So if you're going to run your AC for 30 minutes, you ideally want to straddle two 1/2 hour periods - starting it 15 minutes into a demand period and ending it 15 minutes into the next period...

One thing I noticed while writing the code to calculate the integrated average real-time demand that matches SRP numbers, is how much the actual demand calculation is skewed in SRP's favor (instead of using the absolute value of the simple 30 minute net usage calculation). In some cases it made...

Thanks for the feedback. The SmartThings app allows for scheduling mode changes and reserve % changes, but does not currently allow you to schedule different TBC peak/off-peak hours to be applied at certain times. It should be pretty simple to add this. I'll take a look. I've personally never...

I couldn't find anything out there either for SmartThings Powerwall integration, so I ended up writing my own: Tesla Powerwall Manager app for the SmartThings Hub - DarwinsDen.com So far, it's been working pretty well. If only Tesla would update the PW software to allow you to immediately...

Yes, using just Off-Peak and Peak (no shoulders) can help with the odd off-peak discharge issues. The behavior in peak though can burn through the batteries pretty quickly by discharging to cover net home usage while you exporting excess solar back to the grid. As long as your calcs account for...

Had I actually noticed that on page 5 when I originally read it, that would have been my interpretation as well. Maybe it's worded poorly by SRP and the intent is just to imply that there will always be a grid charge applied, no matter how much you produce. Here's the summary from my April bill...

I don't think there's anything stopping you from having bills below the $32.44 service charge on SRP's E-27 and E-15 plans, although the rules can certainly get pretty confusing. I've had after tax bills in the spring that were below $32.44 (although not by much) on my 5.6kW/1PW system.

Yes, unfortunately, demand by definition can't be negative. To make it even worse, demand is not net metered over the 30 minute demand period. So if in a given half hour, you send 6kW net surplus power to the grid for 15 minutes and then consume 2 kW net for 15 minutes, your demand penalty will...

I would think the integrated power calculation would be done in real-time at the gateway, not in the phone app. No insight into what's happening at that box, but who knows, but maybe one of the CT sensors on one of the inverter 240V poles is reversed or otherwise not reporting. Tesla/Neurio may...

@JayClark, one potential risk area with your set-up is with how well Tesla's software will manage your demand, solar and PW battery reserve over a full-week period. It may work fine, but if you use Tesla's Time-Based Control mode setting, you will be reliant on the Powerwall software to do the...

I should have done that to begin with. Here's my 2pm-8pm shoulder period for SRP summer:

It sounds like you've found a good kW/#PW sweet spot for managing demand for your home. If you do become more concerned with your Powerwalls not making it to 8pm, you could try changing your 2-8pm peak period to a shoulder period (the same 8pm-2pm off-peak, with no peak set). I would think your...

Most days I hit 8PM with about 30% reserve on my 1 PW (5.6kW PV), but sometimes it's still close on cloudy days. I ended up dropping my reserve to 0% just to be safe for demand management. I only have one 16 seer AC unit. I'm using single shoulder period inTBC Cost-Saving. Are you setting up a...

My panels are southwest facing (225 degrees) and roof tilt is around 18 degrees. On a typical clear day in December, the system produces around 20 kWh. Last December it produced about 500kWh over the month. You can review the entire output history here.

I'm in Arizona with SRP electric as well (5.6 kW/1 PW) In winter, I used a single 5am to 9pm shoulder period in cost-saving mode to cover SRP's two 5am-9am and 5pm-9pm winter peak periods and it worked fairly well for my needs - for the most part. From 9am-5pm, the solar panels were usually...

I've updated the SmartThings app to show 100% reserve in backup-mode, and also added an option to schedule mode changes (Backup, Self-Powered, Time-Based Control) on specified times and days. I was fairly happy with the performance of Time-Based Control/Cost-Savings to manage my demand, but I'm...

My utility has two peak periods per day in the winter, so that could be a nice addition. I was told by my (3rd party) installer that Tesla was planning on supporting more than one peak schedule per day, so it is possible that the gateway allows for it. The API appears to support an array of...

Thanks for the feedback! I'll update the docs to note that this requires the classic app. I'm guessing that the reserve percentage that is set through the API only applies to self-powered and advanced time control modes. The Tesla app may just present you with locked controls showing 100%...

I ended up writing a Powerwall app for the SmartThings hub that allows for monitoring and control of the Powerwall through SmartThings, and also allows you to fully leverage SmartThings to send mobile notifications and to command smart devices and Powerwall functions based on the current status...

Not air conditioned - and the door faces southwest to boot. I've insulated the garage door and some of the outside walls, so the garage at least stays cooler than the outside air in the afternoon - but not by much. I have an automated fan that draws the hot air out of the garage at night - or...

My PowerWall fan starts to get relatively noisy when my garage heats up over 100 degrees F. I can hear it from inside the house. The rest of the time it's pretty quiet. My contractor did not charge me extra for the wiring run through the attic from my electrical panel to the garage on the other...

My Firefox was just updated to 68.0 and the power flow animations are now working for the local gateway web page UI. Thanks @Sylvia Else for helping make this fix happen. This is an excellent example of multiple communities proactively working together to make things better for everyone...

I was able to add the PowerWall to the mobile app right after the installation and weeks before commissioning through the owner self registration page at: Powerwall Self Registration | Tesla. This page explicitly states that "The Powerwall can be registered to enable access to the Tesla mobile...