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  1. J

    Could Stormwatch have somehow increased my Powerwall capacity?

    Self-powered. I've been on self-powered ever since install, with the reserve setting at 40%. And, at time of install (October) the lowest the battery would get would be like 41% or so overnight before being recharged by solar. I can't account for the battery only getting down to low 50s by...
  2. J

    Could Stormwatch have somehow increased my Powerwall capacity?

    That's not quite the point. We're talking about overnight draw. Not about solar production. My batteries get up to 100% every day.
  3. J

    Could Stormwatch have somehow increased my Powerwall capacity?

    During the recent storms here in NorCal we had a few Storm Watch events and I put my Powerwalls on 100% backup. Now that weather is back to normal I put things back to my usual settings: 40% reserve. But I'm noticing that overnight my Powerwalls aren't discharging as much as they used to. It...
  4. J

    CoServ Solar Policy Change [update to NEM program]

    They're basically doing what CA did with NEM3. Gutting their payback rate in the name of "equity" when in reality it's just a cash grab. Their answer on the rate plan will be important, because basically you'll still end up with a power bill at night and will get almost nothing for...
  5. J

    Will California and West see Storm Watch in the next few days (2022-12-29)?

    It might be, but what's interesting is next day when Storm Watch was off it charged to 100% on solar. So I suspect when "hard charging" from the grid it doesn't go to 100%.
  6. J

    Will California and West see Storm Watch in the next few days (2022-12-29)?

    Well, since I'm going to be claiming my Powerwalls on my 2022 taxes I note the Inflation Reduction Act doesn't require the batteries to be solar tied or so I've read. Regardless, Tesla told me they can turn it on for me if I ask.
  7. J

    Will California and West see Storm Watch in the next few days (2022-12-29)?

    Storm Watch kicked on this morning in San Jose. What was odd was that it charged to 99% (now dropped to 98%) and didn't try to charge off of solar even though we had sun today.
  8. J

    Self-consumption and large loads (like EVSE)?

    Yeah, that looks like it would work. The /api/operation call can just set the backup level to 100%.
  9. J

    Self-consumption and large loads (like EVSE)?

    Let's say you have two Powerwalls and you're configured in a whole-home backup configuration. If I were to install a 48A (continuous) EVSE and then try to charge at 48A at night while in self-consumption mode what would the Powerwalls do? The car + the normal background loads will likely...
  10. J

    Tesla App Utility plan configuration: Multiple Peaks, Buy/Sell Behavior, etc

    Does HomeAssistant support HomeKit? I went with HomeBridge to give me Siri control over things.
  11. J

    Adding panelboard later?

    I have a 12kW SunPower system with two Powerwalls (and a Span panel). Nothing about my installed required the Panelboard in the gateway, but I was wondering: If I wanted to install an EVSE down the line in such a way that it NEVER draws from my Powerwalls then could I have the panelboard...
  12. J

    Santa Clara County retroactively Changing ESS Rules

    I'm not sure if being in San Jose proper makes things easier or harder (the requirement for bracket inspections, for example), but my installer - Freedom Solar - got both my Solar and my Powerwalls through everything with literally zero issues. And they did amazing work. Semper Solaris always...
  13. J

    Main Panel Upgrade After Solar Panel and Powerwall Installation

    I wouldn't have done Solar + Storage if I was an SVP customer, I think. But I also like being self sufficient.
  14. J

    Main Panel Upgrade After Solar Panel and Powerwall Installation

    Sorry, should have said "most". Or "all the ones I saw at home depot". If there was an edit button I'd change it. If I could afford a house in Palo Alto I'd have, in some ways, fewer problems. At once point PG&E wasn't charging for service upgrades if it was for EV charging. I think the...
  15. J

    Looking at ROI calcs for Powerwalls

    Yes, they're probably a bit overpriced. If Span worked with a different battery platform I'd probably have gone that route but they don't as of yet so here we are...
  16. J

    Tesla App Utility plan configuration: Multiple Peaks, Buy/Sell Behavior, etc

    I'm just trying to find a balance between "use em hard" and "don't use them at all". I also hope we can find smart home integration options in the future. Maybe someone will write it. If I have a smart thermostat (which I do) I'd love logic like "precool home while there's excess solar and...
  17. J

    Main Panel Upgrade After Solar Panel and Powerwall Installation

    My "main panel" is this tiny little box next to the meter with a single 100A breaker in it. So sad. My load center is where the actual home circuits are, and that's inside the garage. I wish I had conduit so bad...I hate my buried aluminum wire. That's also why a 48A EVSE takes a 60A...
  18. J

    Main Panel Upgrade After Solar Panel and Powerwall Installation

    One reason I didn't have Tesla do the install. :) In my case it's not *that* complicated. If I went to 200A it would be replacing the short run from the main to the gateway and the longer run from the generation panel to the sub. Replace a few breakers and done. That's probably idea, but the...
  19. J

    Tesla App Utility plan configuration: Multiple Peaks, Buy/Sell Behavior, etc

    Wasn't planning on "not charging to 100%". It was more "maybe I don't need to always be on self powered". I would like to do TBC - I guess if I entered a fake rate plan it would let me. As others have said, that's when it has 70% total storage left, correct? So 9.45kWh per Powerwall? Not...
  20. J

    Looking at ROI calcs for Powerwalls

    By my math Powerwalls didn't really break even in 10 years. However, they did do other things: Maximizes consumption of local solar power. My system is a bit oversized. :) Protection against the occasional outage. Protection against the next "flex alert" event. My 2 Powerwalls should be able...
  21. J

    Tesla App Utility plan configuration: Multiple Peaks, Buy/Sell Behavior, etc

    @jjrandorin Can you link me to a thread that discussed powerwall longevity? That was my main question. I don't see a way to edit my post to remove that portion of it so that it can be moved to a relevant thread, as the entire upper 2/3rds of the post are irrelevant to this thread.
  22. J

    Main Panel Upgrade After Solar Panel and Powerwall Installation

    I shouldn't need a new panel, other than the main panel. All modern panels are rated for at least 200A.
  23. J

    Grid charging update

    Mine won't even let me grid charge. :/
  24. J

    Tesla App Utility plan configuration: Multiple Peaks, Buy/Sell Behavior, etc

    My system is finally ALL DONE and I'm pretty happy with it. It involved: Subpanel upgrade to Span.io panel 12kW SunPower PV system 2 Powerwalls (Took a year to get the Powerwalls.) Now that the Powerwalls are in I look at my usage all the time. At this time of year (setting aside today...
  25. J

    Main Panel Upgrade After Solar Panel and Powerwall Installation

    *sigh* Do you have an "all in" budgetary number yet? I mean is the $40k with PG&E all costs, or are there more costs on top of that (setting aside the Tesla questions here). Tesla Solar did NOT do my install, but I do have Powerwalls. I ended up with a generation panel on the outside of my...
  26. J

    Main Panel Upgrade After Solar Panel and Powerwall Installation

    I don't have great insights for you, however, I do have questions because I've wanted to ask someone who actually got PG&E to do a underground line upgrade. My understanding is you pay an engineering fee to PG&E and then they determine what is needed to upgrade. That fee gets applied to their...