How much does it cost to charge a Hyundai Ioniq 9 at home?
$22.48 for a full charge
- Per 100 miles
- $6.71
- A month at 1,000 miles
- $67.12
- Per mile
- 6.7¢
- Gas at 30 mpg, same miles
- $149.33
2026 Hyundai Ioniq 9 S RWD, EPA 36.6 kWh per 100 miles, at the US average of 18.3¢ per kWh (EIA, June 2026). Filling the 110.3 kWh battery from empty takes about 123 kWh from the wall at 90% charging efficiency. How we calculate this
Electricity versus gasoline
| Hyundai Ioniq 9 | Gas car | Difference | |
|---|---|---|---|
| Per 100 miles | $6.71 | $14.93 | $8.22 |
| A month (1,000 mi) | $67.12 | $149.33 | $82.21 |
| A year (12,000 mi) | $805.49 | $1,792.00 | $986.51 |
Home charging beats gas for this car as long as electricity costs less than 40.8¢ per kWh. Negative differences mean the gas car is cheaper. The 30 mpg comparison car is our assumption; see the methodology.
What it costs at other monthly mileages
| Miles a month | Energy | Electricity | Gas (30 mpg) |
|---|---|---|---|
| 500 | 183 kWh | $33.56 | $74.67 |
| 750 | 275 kWh | $50.34 | $112.00 |
| 1,000 | 366 kWh | $67.12 | $149.33 |
| 1,500 | 549 kWh | $100.69 | $224.00 |
| 2,000 | 732 kWh | $134.25 | $298.67 |
Ways to spend less
- Ask your utility about a time-of-use or EV rate and schedule charging for off-peak hours; the car or charger can do it automatically.
- Precondition the cabin while the car is still plugged in, so heating or cooling comes from the grid instead of the battery.
- Keep tires at the pressure on the door-jamb sticker; underinflated tires raise consumption.
- Drive 100 fewer miles a month: saves $6.71 at 18.3¢ per kWh.
Cost to charge a Hyundai Ioniq 9 in every state
| Rank | State | Rate | Full charge | 1,000 mi a month |
|---|---|---|---|---|
| 1 | Nevada | 13.1¢ | $16.07 | $47.98 |
| 2 | Nebraska | 13.3¢ | $16.24 | $48.50 |
| 3 | Utah | 13.4¢ | $16.39 | $48.93 |
| 4 | Louisiana | 13.5¢ | $16.53 | $49.37 |
| 5 | Tennessee | 14.1¢ | $17.24 | $51.50 |
| 6 | Arkansas | 14.1¢ | $17.30 | $51.68 |
| 7 | North Dakota | 14.1¢ | $17.30 | $51.68 |
| 8 | Kentucky | 14.3¢ | $17.48 | $52.19 |
| 9 | Oklahoma | 14.3¢ | $17.56 | $52.45 |
| 10 | Idaho | 14.4¢ | $17.61 | $52.59 |
| 11 | North Carolina | 14.7¢ | $18.06 | $53.95 |
| 12 | Mississippi | 14.9¢ | $18.24 | $54.46 |
| 13 | Washington | 14.9¢ | $18.27 | $54.57 |
| 14 | New Mexico | 15.1¢ | $18.46 | $55.12 |
| 15 | Florida | 15.1¢ | $18.51 | $55.27 |
| 16 | Montana | 15.1¢ | $18.55 | $55.41 |
| 17 | Arizona | 15.2¢ | $18.60 | $55.56 |
| 18 | Wyoming | 15.2¢ | $18.68 | $55.78 |
| 19 | South Dakota | 15.4¢ | $18.82 | $56.22 |
| 20 | West Virginia | 15.5¢ | $18.93 | $56.55 |
| 21 | South Carolina | 15.6¢ | $19.06 | $56.91 |
| 22 | Kansas | 15.7¢ | $19.25 | $57.50 |
| 23 | Iowa | 15.9¢ | $19.52 | $58.30 |
| 24 | Texas | 15.9¢ | $19.54 | $58.34 |
| 25 | Missouri | 16.2¢ | $19.88 | $59.37 |
| 26 | Oregon | 16.3¢ | $20.00 | $59.73 |
| 27 | Georgia | 16.4¢ | $20.05 | $59.88 |
| 28 | Alabama | 16.4¢ | $20.10 | $60.02 |
| 29 | Colorado | 17.1¢ | $20.99 | $62.70 |
| 30 | Virginia | 17.2¢ | $21.10 | $63.03 |
| 31 | Indiana | 17.5¢ | $21.46 | $64.09 |
| 32 | Minnesota | 17.5¢ | $21.47 | $64.12 |
| 33 | Ohio | 19.2¢ | $23.52 | $70.24 |
| 34 | Delaware | 19.3¢ | $23.64 | $70.60 |
| 35 | Wisconsin | 19.6¢ | $23.97 | $71.59 |
| 36 | Illinois | 19.9¢ | $24.38 | $72.80 |
| 37 | Pennsylvania | 21.7¢ | $26.63 | $79.53 |
| 38 | Maryland | 21.8¢ | $26.77 | $79.93 |
| 39 | Michigan | 23.0¢ | $28.18 | $84.14 |
| 40 | Connecticut | 24.3¢ | $29.81 | $89.01 |
| 41 | District of Columbia | 24.4¢ | $29.89 | $89.27 |
| 42 | Vermont | 24.4¢ | $29.95 | $89.45 |
| 43 | New Jersey | 25.0¢ | $30.58 | $91.32 |
| 44 | New Hampshire | 27.0¢ | $33.10 | $98.86 |
| 45 | Alaska | 28.2¢ | $34.57 | $103.25 |
| 46 | Rhode Island | 29.2¢ | $35.82 | $106.98 |
| 47 | New York | 29.5¢ | $36.14 | $107.93 |
| 48 | Maine | 29.6¢ | $36.26 | $108.30 |
| 49 | Massachusetts | 29.6¢ | $36.29 | $108.37 |
| 50 | California | 34.7¢ | $42.58 | $127.15 |
| 51 | Hawaii | 52.7¢ | $64.61 | $192.96 |
Questions
How much does it cost to fully charge a Hyundai Ioniq 9?
About $22.48. Filling the 110.3 kWh battery from empty takes about 123 kWh from the wall at 90% charging efficiency. at 18.3¢ per kWh.
How much does it cost to charge a Hyundai Ioniq 9 per month?
About $67.12 a month at 1,000 miles (18.3¢ per kWh), or $805.49 a year. At the EPA rating of 36.6 kWh per 100 miles, 1,000 miles take 366 kWh from the wall.
How much does it cost to charge a Hyundai Ioniq 9 per mile?
6.7¢ a mile, or $6.71 per 100 miles.
Is charging a Hyundai Ioniq 9 cheaper than gas?
Yes: $6.71 per 100 miles against $14.93 for a 30 mpg car at $4.48 a gallon (AAA, September 24, 2026). It stays cheaper as long as electricity costs less than 40.8¢ per kWh.
How many kWh does it take to charge a Hyundai Ioniq 9?
Filling the 110.3 kWh battery from empty takes about 123 kWh from the wall at 90% charging efficiency. Most charging sessions top up part of the battery, so a typical night uses less.
Where is it cheapest to charge an EV at home?
Nevada, where 1,000 miles cost $47.98 a month. The most expensive is Hawaii at $192.96.
Sources
- EPA rating carrier: S RWD 92 MPGe, 335 mi; SE/SEL AWD 88 MPGe 320 mi; Performance 85 MPGe 311 mi
- EPA rating carrier: All 2026 Ioniq 9 use 110.3 kWh pack
- U.S. EPA and DOE, fueleconomy.gov (official ratings; verify here)
- AAA, national average price of regular gasoline, September 24, 2026
- U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A: average price of electricity to ultimate customers, residential, June 2026 Figures transcribed from republications of this table on September 26, 2026; pending direct verification from the EIA API.
Usage assumptions (hours a day, season) are ours and listed on the methodology page. Found an error? Tell us.