Gary Zhou 
A Tesla Powerwall owner demonstrated what it looks like when you go through a 48-hour power outage with the battery system and solar power.
The demand for the home battery packs is currently through the roof.
Recent weather events, especially in Texas, have exposed the grid for being weaker than many people believed, and now many homeowners want to be more independent from it.
Tesla has been experiencing this surge in demand with the Powerwall, which is by far the most popular home battery pack.
Now, we found a good example of how the Tesla Powerwall perform during an extended power outage.
Dan King, co-owner of Harmon Electric & Solar, a solar company that installs Powerwalls, posted a video of a simulation of his own Powerwall with solar going through a 48-hour power outage:
The test was done during March last year, which is not one of the most energy-demanding months in Arizona, but the system still performed impressively.
As you can see from the stats, the home consumed 56.7 kWh on Sunday:
The solar would have been easily covered if the use was only during the solar power hours, but with Powerwalls, that solar power gets consumed the next day.
King noted that he did shut his outdoor lighting and sprinklers down, which helped the Powerwall still have a 15% charge by the morning, but it did show that with minimal power management, their Powerwall plus solar system would be sustainable.
However, that’s for months where AC is not required.
Tesla CEO Elon Musk recently announced that every new Tesla solar panel or solar roof system going forward will come with Tesla Powerwalls.
The company also recently introduced a new Tesla Powerwall+ with higher power capacity.
