Charging a 2026 Porsche Taycan 4S Performance Battery at home in Illinois

At Illinois's residential electricity rate of 19.22¢/kWh, a 2026 Porsche Taycan 4S Performance Battery (rated 38.4 kWh per 100 miles by the EPA) costs $7.39 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 53.9% cheaper per mile than gasoline in Illinois — charging at home is much cheaper than gas here.

What a year of driving costs

Illinois owners putting 15,000 annual miles on a 2026 Porsche Taycan 4S Performance Battery spend about $1,109 on home electricity, compared to about $2,403 a gas-car equivalent would spend on fuel. Call it about $1,294 saved annually, at this mileage.

Filling up the 2026 Porsche Taycan 4S Performance Battery, in dollars

At Illinois's rate, fully covering this 2026 Porsche Taycan 4S Performance Battery's 252-mile EPA range costs about $18.62 (96.9 kWh) — the energy the EPA test actually used, not the battery's rated size.

How this compares nationally

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Porsche Taycan 4S Performance Battery in Illinois ranks 13,965 for cost savings versus gas — 1 being the best deal nationally. Separately, the Porsche Taycan 4S Performance Battery ranks 225 of 400 EV models for raw efficiency, and Illinois ranks 36 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.

Get quotes from local electricians for Level 2 charger installation in Illinois before deciding.

More on how this number was built

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. At 19.22¢/kWh, Illinois sits in the middle of the national range — the guide to why charging cost varies by state shows where.