$26.31 a Full Charge: Rivian R1S Charging Cost at Home

Charging a 2027 Rivian R1S costs about $26.31 for a full charge and $7.58 per 100 miles at 17¢/kWh — about $910 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 Rivian R1S costs about $26.31 for a full charge (~155 kWh) at the US average rate of 17¢/kWh — roughly $7.58 per 100 miles, or $910 a year at 12,000 miles. The R1S uses 44.6 kWh/100 mi on the EPA combined cycle. The R1S’s real cost scales with your own rate, from about 12¢ to over 50¢ across the US.

The Rivian R1S (EPA data for the 2027 model year, the newest the EPA lists; dollar figures use 2026 electricity rates) uses 44.6 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 R1S at about $7.58 per 100 miles — 7.58¢ a mile. That is on the heavy side — 62th of 67, where 67 is the least efficient — which is typical for a SUV of this weight. It still costs far less per mile than gasoline, but it is not where EV running costs are at their best.

What a R1S costs to charge at every rate

The same R1S costs $5.51 per 100 miles at Idaho’s 12.35¢ and $23.51 at Hawaii’s 52.72¢ — a 4.3× spread that is entirely the rate:

Wall-side for the R1S: EPA’s 44.6 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 R1S’s 7.58¢ 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 R1S’s math in full — both formulas, and the electricity rate at which the advantage disappears.

Range: what a “full charge” of the R1S really means

EPA range across the lineup runs 289–410 miles, averaging 347. Multiplying that by the car’s efficiency gives roughly 155 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 R1S on a public fast charger

On a public fast charger at about 48¢/kWh the R1S costs $21.41 per 100 miles against $7.58 at home — 2.8× — or roughly $2,569 a year instead of $910 if it never sees a home outlet. Why a session costs more than the posted price for a R1S (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 R1S’s $910 flat-rate figure.

The R1S in cold weather

A hard winter lifts the R1S from 44.6 to roughly 58.0 kWh/100 mi (the middle of the 20–40% rise real-world data shows), so $9.86 per 100 miles instead of $7.58 and an effective range nearer 267 miles than 347. The mechanics behind the R1S’s winter penalty — cabin heat, battery chemistry, preconditioning from the wall — are on the hub ; the R1S’s $910 annual figure above already averages the seasons.

Where the R1S sits against other EVs

Its nearest neighbors on efficiency are the Audi Q8 e-tron (44.4 kWh/100 mi) and the Rivian R1T (45.0 kWh/100 mi). The R1S at 44.6 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. And if a SUV like the R1S is the fixed requirement, the cheapest SUV to run tracked here is the Tesla Model Y at $549 a year — $361 less than the R1S.

Trims: does the R1S version you pick change the bill?

The EPA rates 12 configurations of the 2027 R1S, and they are not close: 39.5 kWh/100 mi for the most efficient, 50.1 for the least, a 27% spread. At 12,000 miles that is about $216 a year between the cheapest and most expensive version of the same R1S. Bigger wheels, all-wheel drive and performance tunes are usually what separates them — worth knowing before you tick the options box.

How it compares inside the Rivian range

The R1S at 44.6 kWh/100 mi sits among 3 Rivian EVs tracked here, running from 33.1 (R2) to 45.0 (R1T). Also on this site: Rivian R2 , Rivian R1T .

The tax question for the R1S, answered plainly

Nothing about the R1S 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 R1S on running cost and body style: Audi Q8 e-tron (44.4 kWh/100 mi), Rivian R1T (45.0 kWh/100 mi), Kia EV9 (40.0 kWh/100 mi).

Put the R1S’s $910 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 R1S in the Supercharger vs home calculator . All 67 EVs . The R1S is only one line on the household bill — the 40-appliance running-cost ranking shows where $910 a year of charging lands next to everyday loads like a refrigerator or a coffee maker .

Frequently asked questions

How we calculated this

Worked for the R1S: 44.6 kWh/100 mi ÷ 100 × 17¢ = $7.58 per 100 miles; 347 mi × 44.6 ÷ 100 = 155 kWh, × $0.17 = $26.31 per full charge; $7.58 × 12,000 ÷ 100 = $910 a year. The R1S’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 Audi Q8 e-tron — 44.4 kWh/100 mi against the R1S’s 44.6 — $7.55 vs $7.58 per 100 miles at 17¢.
• Cost to charge a Rivian R1T — 45.0 kWh/100 mi against the R1S’s 44.6 — $7.65 vs $7.58 per 100 miles at 17¢.
• Cost to charge a Tesla Cybertruck — 43.1 kWh/100 mi against the R1S’s 44.6 — $7.33 vs $7.58 per 100 miles at 17¢.
• Cost to charge an EV: all 67 models ranked — Where the R1S’s $910 a year sits among 67 EVs, plus the fast-charging, cold-weather and tax explainers.
• EV vs gas cost calculator — The R1S’s 44.6 kWh/100 mi against your gas car’s mpg and your local pump price.