Washington home charging cost for the 2026 Rolls-Royce Spectre Black Badge (23 inch Wheels)

A 2026 Rolls-Royce Spectre Black Badge (23 inch Wheels) draws 48.3 kWh per 100 miles per the EPA; at Washington's 14.35¢/kWh residential rate that's $6.93 per 100 miles charged at home, versus $16.02 for a 25.5-mpg gas car covering the same distance. Charging at home is much cheaper than gas here: 56.8% less than gas per mile, here specifically.

What a year of driving costs

At fueleconomy.gov's default of 15,000 annual miles, the 2026 Rolls-Royce Spectre Black Badge (23 inch Wheels) costs roughly $1,039 a year to charge at home in Washington, against roughly $2,403 a year for an equivalent gas car. That's a savings of about $1,364 a year.

What one full charge costs

Covering the 2026 Rolls-Royce Spectre Black Badge (23 inch Wheels)'s EPA-rated 251-mile range takes about 121.2 kWh, which costs about $17.39 at Washington's residential rate — figured from the EPA's own combined range and consumption numbers, not the pack's nameplate capacity.

How this compares nationally

This combination ranks 12,894 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Rolls-Royce Spectre Black Badge (23 inch Wheels) alone ranks 380 of 400 models for efficiency; Washington alone ranks 15 of 51 states for electricity price.

Next step: home charger installation

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.

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

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. Curious how Washington's 14.35¢/kWh compares? The guide to charging cost by state ranks every state side by side.