Charging a 2026 Tesla Model S Plaid at home in Delaware

At Delaware's residential electricity rate of 17.74¢/kWh, a 2026 Tesla Model S Plaid (rated 30.6 kWh per 100 miles by the EPA) costs $5.43 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. That works out to 66.1% cheaper per mile than gasoline in Delaware — charging at home costs a fraction of what gas would here.

What a year of driving costs

Delaware owners putting 15,000 annual miles on a 2026 Tesla Model S Plaid spend about $814 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,589 saved annually, at this mileage.

Filling up the 2026 Tesla Model S Plaid, in dollars

At Delaware's rate, fully covering this 2026 Tesla Model S Plaid's 368-mile EPA range costs about $19.97 (112.6 kWh) — the energy the EPA test actually used, not the battery's rated size.

Where this ranks

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Tesla Model S Plaid in Delaware ranks 6,606 for cost savings versus gas — 1 being the best deal nationally. Separately, the Tesla Model S Plaid ranks 70 of 400 EV models for raw efficiency, and Delaware ranks 33 of 51 for cheapest residential electricity.

Next step: home charger installation

Everything above is the per-mile and per-year cost once a home charger exists — getting one installed is a separate electrical job whose price depends on your panel and wiring, not the state average used here.

Line up a few Delaware electrician quotes for Level 2 install before you commit either way.

More on how this number was built

The methodology guide names the exact EIA and EPA tables behind this page's numbers. Delaware's 17.74¢/kWh rate ranks 33 of 51 states; the state rate guide lays out the full spread.