Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
Register
  • Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
  • The final cut of TMC Podcast #27 is available now with topics time-stamped. We discussed: Consolidation in LiDAR manufacturers; Volvo EX90 shipping with LiDAR; FSD Beta Full Release in N.A.; FSD detecting autopilot cheats, Gwen Shotwell directly overseeing SpaceX Starship; and more. You can watch it now on YouTube. We should have it published to podcast networks shortly.

Interesting Observations During Power Outage with Solar and Powerwalls

Summertime in the Sierra Nevada foothills means frequent power outages. I've made an interesting observation during my last outage.
I have an older 4kW string system and a newer 6kW Enphase IQ7 microinverter system. Last year during power outages when I had 2 Powerwalls and prior to lowering my off-grid frequency shifting from 65 Hz to 62(?) Hz my Powerwalls would get down to about 92% before the solar would start recharging the Powerwalls and then get close to 100% and cycle between these percentages.
I've since added a 3rd Powerwall, lowered my frequency shift to 62(?) Hz, and had some firmware updates. In my most recent outage I observed that my Powerwalls went down to about 96% and then went back up to 98% and stayed there modulating the solar. By modulating I mean the solar generation was going on and off but the Powerwall charge percentage remained at 98%. I suspect I was basically running of my Enphase system since my string system goes offline at the drop of a hat. I was curious to see what happened as the sun set but the power came on at about 4pm so I never got a chance. Don't know what changes made the difference.
 
Last edited:
  • Like
Reactions: morph3ous

About Us

Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.

Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


SUPPORT TMC
Top