Yes. It's foolish to compare the cost of consumable gas vs consumable electricity.

Much better is consumable gasoline versus battery depreciation. Electricity costs nearly disappear.

This was an old adage among the homebrew EV crowd: buying a battery pack is pre-paying for your fuel for the next N years.

The Powerwall[1] is about 35 cents per KWh, assuming it can handle 1000 full cycles. ($3500 for 10KWh capacity.) A decent EV can get 5 miles out of that, so the battery depreciation is 7 cents a mile. That's a multiple of the electricity cost, which is about 2 cents a mile if you don't try for any time-of-day billing.

[1] This is just my best comparison of the actual cost of a Tesla battery.