Charging a 2026 Porsche Taycan Turbo S at home in Hawaii

At Hawaii's residential electricity rate of 45.95¢/kWh, a 2026 Porsche Taycan Turbo S (rated 42.8 kWh per 100 miles by the EPA) costs $19.65 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. Here the math runs the other way: 22.7% more per mile than gasoline, because Hawaii's rate and this model's efficiency combine unfavorably.

Annual cost, at 15 thousands miles a year

Hawaii owners putting 15,000 annual miles on a 2026 Porsche Taycan Turbo S spend about $2,948 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. At this mileage, that's roughly $545 a year worse than the gas comparison.

Cost of a full charge

At Hawaii's rate, fully covering this 2026 Porsche Taycan Turbo S's 266-mile EPA range costs about $52.27 (113.8 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 Porsche Taycan Turbo S in Hawaii ranks 20,300 for cost savings versus gas — 1 being the best deal nationally. Separately, the Porsche Taycan Turbo S ranks 311 of 400 EV models for raw efficiency, and Hawaii ranks 51 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 Hawaii electrician quotes for Level 2 install before you commit either way.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. This is one of the combinations where charging costs more than gas — the guide to when that happens explains why the arithmetic can go either way.