2026 Rolls-Royce Spectre Black Badge (22 inch Wheels): home charging cost in Delaware

At Delaware's residential electricity rate of 17.74¢/kWh, a 2026 Rolls-Royce Spectre Black Badge (22 inch Wheels) (rated 45.4 kWh per 100 miles by the EPA) costs $8.06 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. Charging at home is much cheaper than gas here: 49.7% less than gas per mile, here specifically.

Annual cost, at 15 thousands miles a year

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Rolls-Royce Spectre Black Badge (22 inch Wheels) charged at home in Delaware costs about $1,209/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,194 a year.

Filling up the 2026 Rolls-Royce Spectre Black Badge (22 inch Wheels), in dollars

A 2026 Rolls-Royce Spectre Black Badge (22 inch Wheels) needs roughly 120.8 kWh to reach its EPA-rated 266-mile range, which runs about $21.44 at 17.74¢/kWh in Delaware.

Where this ranks

This combination ranks 15,160 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rolls-Royce Spectre Black Badge (22 inch Wheels) alone ranks 361 of 400 models for efficiency; Delaware alone ranks 33 of 51 states for electricity price.

Before you install a home charger in Delaware

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

Ask a licensed Delaware electrician to quote the install before this math becomes a real decision.

Where these figures come from

See the methodology guide for exactly which EIA and EPA figures feed 2026 Rolls-Royce Spectre Black Badge (22 inch Wheels)'s cost in Delaware. At 17.74¢/kWh, Delaware sits in the middle of the national range — the guide to why charging cost varies by state shows where.