Recent content by dhskiracer71

Now that we switched to summer rates in the AZ SRP territory, my system is sending all my solar to the grid rather than just excess solar. I’d rather have only excess solar so that the batteries last through the evening peak period and I don’t end up with demand charges if depleted. I can’t seem...

Below is a snipet from the Statement of Certification from my installer (not Tesla). Maybe send to Tesla and ask for something similar on their letterhead.

App code and info/instructions here: Tesla Powerwall Manager app for SmartThings (and Hubitat) Hubs - DarwinsDen.com Note, occasionally things break due to changes by Tesla. For instance, currently the “Auth for Tesla” iOS app isn’t generating correct tokens but I am using the previously...

I’ve been running automated power wall scheduling for a couple of years to deal with the SRP TOU periods and to have full control over my PWs to zero out peak use and demand fees. Currently using Darwin’s PowerWall Manager App, Hubitat Hub and Windows Store Tesla Token Generator (only manual...

Storm watch activated today apparently due to the Red Flag warning for tomorrow in our area.

Still working for me for some reason on app version 20.49.0 as of 3/1/2021. Edit: I now recall a number of weeks ago when they updated the software and it broke my Hubitat briefly. I had to change my powerwall password and log back into the Tesla account in the hubitat power wall app to get...

I’m using Darwin’s Powerwall Manager via Hubitat. Set to run self powered exactly 5-9am and pm and it works instantaneously with 0.0 daily or ave demand. Did you verify no excess loads causing the spikes?

Working flawlessly for me on Hubitat. I know there have been issues on SmartThings which is why I made the switch to Hubitat.

The 2.81 cents is for the non-demand solar plans. I think you’ll want to do the E-27 or E-15 plan (demand charges sound like a non-issue with your system) and sell at the net metered rate (3.7 to 6.22 cents per kw).

No way you should be paying sales tax in Arizona for your powerwalls connected to solar system. Here is the actual tax exemption (see line 27 on page 4). I paid zero sales tax but purchased from local company that is more in tune with state tax laws and exemptions...

No way you should be paying sales tax in Arizona for your powerwalls connected to solar panels. Here is the actual tax law (see line 27 on page 4). I paid zero sales tax but purchased from local company. https://www.azleg.gov/legtext/50leg/2r/bills/sb1229p.pdf

I’m adding a second powerwall but by my local installer rather than Tesla directly and cost is about $2100 plus the price of the powerwall. Includes battery combiner panel and other electrical upgrades.

I‘ll revise my statement as it seems impossible to figure out how the Tesla PW logic works. Everyone seems to have different experiences. So my recommendation is to try different settings and see what works best for you. Probably best to give it a few days for each setting given all the...

In the SRP you’ll do best with one large shoulder period covering both peak periods (no peak period setting). This is from many hours of studying the PW behavior and trial and error. Or better yet use Darwin’s SmartThings app to automate schedules.

Also, I’m in SRP, 8k system and had one PW but adding a second to fully squash peak usage and demand charges. I have 3 a/c units and pool with as large family always home so we use a good chunk of electricity. Solar plan rates are dirt cheap so it’s all about managing TOU and demand charges in...