How Much Does It Cost to Charge a BMW i7 at Home? $22.56

Charging a 2027 BMW i7 costs about $22.56 for a full charge and $6.39 per 100 miles at 17¢/kWh — about $767 a year at 12,000 miles.

Updated September 2026 · Source: EIA Electric Power Monthly Table 5.6.A (July 2026 data) · EPA fueleconomy.gov · next EIA update ~Oct 23

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Why this number

Charging a 2027 BMW i7 costs about $22.56 for a full charge (~133 kWh) at the US average rate of 17¢/kWh — roughly $6.39 per 100 miles, or $767 a year at 12,000 miles. The i7 uses 37.6 kWh/100 mi on the EPA combined cycle. The i7’s real cost scales with your own rate, from about 12¢ to over 50¢ across the US.

The BMW i7 (EPA data for the 2027 model year, the newest the EPA lists; dollar figures use 2026 electricity rates) uses 37.6 kWh per 100 miles on the EPA combined cycle — the wall-outlet figure, so charging losses are already counted (look up your exact trim at fueleconomy.gov ). At the US average residential rate of 17¢/kWh that puts the i7 at about $6.39 per 100 miles — 6.39¢ a mile. That lands mid-pack: 44th of the 67 current models tracked here. Nothing about the running cost of the i7 will surprise you in either direction, which for a sedan at 37.6 kWh/100 mi is a reasonable outcome.

What an i7 costs to charge at every rate

The same i7 costs $4.64 per 100 miles at Idaho’s 12.35¢ and $19.82 at Hawaii’s 52.72¢ — a 4.3× spread that is entirely the rate:

Wall-side for the i7: EPA’s 37.6 kWh/100 mi is measured at the outlet, charger losses included; quick-fill your state above for your own figure.

That per-mile figure is the one to hold against gasoline: at 17¢/kWh the i7’s 6.39¢ a mile compares with about 13.6¢ for a 30-mpg gas car at $4.07 a gallon (EIA weekly, Aug 31, 2026). The EV vs gas cost guide works the i7’s math in full — both formulas, and the electricity rate at which the advantage disappears.

Range: what a “full charge” of the i7 really means

EPA combined range is about 353 miles. Multiplying that by the car’s efficiency gives roughly 133 kWh to refill a full range from empty, which is the honest way to think about a ‘full charge’ — battery capacity figures include a buffer you never actually use. That is a long range, and it means the per-charge cost below looks large simply because you are buying more miles at once — the per-mile figure is the one to compare.

The i7 on a public fast charger

On a public fast charger at about 48¢/kWh the i7 costs $18.05 per 100 miles against $6.39 at home — 2.8× — or roughly $2,166 a year instead of $767 if it never sees a home outlet. Why a session costs more than the posted price for a i7 (10–80% charging curve, idle fees, per-minute billing) is explained once on the cost-to-charge hub ; the EV time-of-use calculator nets an overnight rate against the i7’s $767 flat-rate figure.

The i7 in cold weather

A hard winter lifts the i7 from 37.6 to roughly 48.9 kWh/100 mi (the middle of the 20–40% rise real-world data shows), so $8.31 per 100 miles instead of $6.39 and an effective range nearer 272 miles than 353. The mechanics behind the i7’s winter penalty — cabin heat, battery chemistry, preconditioning from the wall — are on the hub ; the i7’s $767 annual figure above already averages the seasons.

Where the i7 sits against other EVs

Its nearest neighbors on efficiency are the Genesis Electrified GV70 (37.3 kWh/100 mi) and the Jeep Wagoneer S (37.7 kWh/100 mi). The i7 at 37.6 kWh/100 mi sits against a set that runs from the Tesla Model Y at 26.9 kWh/100 mi, and the least efficient is the GMC Hummer EV at 67.8 — a spread that changes annual charging cost by $834 a year at 17¢/kWh and 12,000 miles.

Trims: does the i7 version you pick change the bill?

The EPA rates 7 configurations of the 2027 i7, from 36.5 to 38.4 kWh/100 mi. That is a narrow band — about $39 a year between the best and worst at 12,000 miles — so pick the trim you want and don’t agonise over the running cost.

How it compares inside the BMW range

The i7 at 37.6 kWh/100 mi sits among 5 BMW EVs tracked here, running from 31.7 (iX3) to 39.4 (iX). Also on this site: BMW iX3 , BMW i5 , BMW i4 , BMW iX .

The tax question for the i7, answered plainly

Nothing about the i7 changes that: the rules are the same for every EV, and the full 2026 position — §30D, §25E, the ended §30C charger credit, state programs — is in the energy tax credit guide and on the cost-to-charge hub .

Related

Closest comparisons to the i7 on running cost and body style: Genesis Electrified GV70 (37.3 kWh/100 mi), Jeep Wagoneer S (37.7 kWh/100 mi), Hyundai Ioniq 6 (37.9 kWh/100 mi), Mercedes-Benz EQE (36.1 kWh/100 mi).

Put the i7’s $767 a year against a gas car in the EV vs gas calculator , check your state’s rate , or price a road-trip stop for a i7 in the Supercharger vs home calculator . All 67 EVs . The i7 is only one line on the household bill — the 40-appliance running-cost ranking shows where $767 a year of charging lands next to everyday loads like a electric furnace or a garage heater .

Frequently asked questions

How we calculated this

Worked for the i7: 37.6 kWh/100 mi ÷ 100 × 17¢ = $6.39 per 100 miles; 353 mi × 37.6 ÷ 100 = 133 kWh, × $0.17 = $22.56 per full charge; $6.39 × 12,000 ÷ 100 = $767 a year. The i7’s gasoline comparison is 12,000 ÷ 30 mpg × $4.07 = $1,628. EPA combined ratings, measured at the wall.

Sources: U.S. Energy Information Administration (EIA) electricity rates · DSIRE incentive records · public IRS/OBBBA guidance. Figures are modeled estimates, not quotes or tax advice. See our methodology.

Where to go next

• Cost to charge a Jeep Wagoneer S — 37.7 kWh/100 mi against the i7’s 37.6 — $6.41 vs $6.39 per 100 miles at 17¢.
• Cost to charge a Volvo EX90 — 37.8 kWh/100 mi against the i7’s 37.6 — $6.43 vs $6.39 per 100 miles at 17¢.
• Cost to charge a Hyundai Ioniq 6 — 37.9 kWh/100 mi against the i7’s 37.6 — $6.44 vs $6.39 per 100 miles at 17¢.
• Cost to charge an EV: all 67 models ranked — Where the i7’s $767 a year sits among 67 EVs, plus the fast-charging, cold-weather and tax explainers.
• EV vs gas cost calculator — The i7’s 37.6 kWh/100 mi against your gas car’s mpg and your local pump price.