Even if you can’t easily recharge, it’s a great way to power your home for a few days. It’s arguably a very cost-efficient home backup solution, assuming you were already in the market for an EV.

A Cybertruck has nearly 10x the battery capacity of a single Powerwall, and to buy that much Powerwall capacity would cost at least as much as a Cybertruck. Even a Tesla Model 3 (which now supports home backup) is over 5x Powerwalls.

You still have to pay to install home backup support on your home’s breaker (at least $10k), but you don’t need anywhere near the amount of very expensive supplemental home batteries.

Also, even an EV with a 120V outlet and no home backup support could be very useful for recharging a portable battery bank.