What it costs to charge a 2026 Rolls-Royce Spectre (23 inch Wheels) in Illinois

At Illinois's residential electricity rate of 19.22¢/kWh, a 2026 Rolls-Royce Spectre (23 inch Wheels) (rated 47.8 kWh per 100 miles by the EPA) costs $9.19 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 42.6% cheaper per mile than gasoline in Illinois — charging at home is much cheaper than gas here.

What a year of driving costs

Home charging this 2026 Rolls-Royce Spectre (23 inch Wheels) in Illinois runs about $1,379 over fueleconomy.gov's default 15,000 annual miles, versus about $2,403 for the gasoline equivalent. Call it about $1,024 saved annually, at this mileage.

Cost of a full charge

$23.26 — that's what Illinois's 19.22¢/kWh rate puts on the 121 kWh a 2026 Rolls-Royce Spectre (23 inch Wheels) needs for its full 253-mile EPA range.

2026 Rolls-Royce Spectre (23 inch Wheels) in Illinois, ranked

Among all 20,400 state-and-model combinations this site tracks, charging a 2026 Rolls-Royce Spectre (23 inch Wheels) in Illinois ranks 16,615 for cost savings versus gas — 1 being the best deal nationally. Separately, the Rolls-Royce Spectre (23 inch Wheels) ranks 377 of 400 EV models for raw efficiency, and Illinois ranks 36 of 51 for cheapest residential electricity.

Before you install a home charger in Illinois

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 Illinois 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. At 19.22¢/kWh, Illinois sits in the middle of the national range — the guide to why charging cost varies by state shows where.