Cost to Charge GMC Sierra EV on IONNA
A full charge for the GMC Sierra EV on IONNA costs $52.48 at 32¢/kWh. That is $25.42 more than home charging at the national average rate. The equivalent cost per 100 miles is $14.26.
Full Charge (80%)
$52.48
Half Charge (50%)
$32.80
Per 100 Miles
$14.26
Charge Time
28 min
IONNA vs Home Charging
| Scenario | IONNA | Home (16.5¢/kWh avg) | Difference |
|---|---|---|---|
| Full Charge (80%) | $52.48 | $27.06 | +$25.42 |
| Half Charge (50%) | $32.80 | $16.91 | +$15.89 |
| 25% Top-Up | $16.40 | $8.46 | +$7.94 |
Home Charging Cost Variation by State
Compare IONNA (32¢/kWh) against home charging in each state. In some states, public networks become competitive.
| State | Home Rate | Home Full Charge | IONNA | Home Saves |
|---|---|---|---|---|
| North Dakota | 10.92¢ | $17.91 | $52.48 | +$34.57 |
| Nebraska | 11.76¢ | $19.29 | $52.48 | +$33.19 |
| Missouri | 11.8¢ | $19.35 | $52.48 | +$33.13 |
| Idaho | 12.07¢ | $19.79 | $52.48 | +$32.69 |
| Arkansas | 12.35¢ | $20.25 | $52.48 | +$32.23 |
| Louisiana | 12.46¢ | $20.43 | $52.48 | +$32.05 |
| Oklahoma | 12.62¢ | $20.70 | $52.48 | +$31.78 |
| Iowa | 12.83¢ | $21.04 | $52.48 | +$31.44 |
| Wyoming | 12.85¢ | $21.07 | $52.48 | +$31.41 |
| Montana | 12.86¢ | $21.09 | $52.48 | +$31.39 |
| Utah | 12.88¢ | $21.12 | $52.48 | +$31.36 |
| Tennessee | 13.1¢ | $21.48 | $52.48 | +$31.00 |
| South Dakota | 13.6¢ | $22.30 | $52.48 | +$30.18 |
| North Carolina | 13.68¢ | $22.44 | $52.48 | +$30.04 |
| Washington | 13.81¢ | $22.65 | $52.48 | +$29.83 |
| Nevada | 13.98¢ | $22.93 | $52.48 | +$29.55 |
| Mississippi | 14.24¢ | $23.35 | $52.48 | +$29.13 |
| Kentucky | 14.27¢ | $23.40 | $52.48 | +$29.08 |
| Kansas | 14.29¢ | $23.44 | $52.48 | +$29.04 |
| Georgia | 14.46¢ | $23.71 | $52.48 | +$28.77 |
| Oregon | 14.66¢ | $24.04 | $52.48 | +$28.44 |
| New Mexico | 14.7¢ | $24.11 | $52.48 | +$28.37 |
| West Virginia | 14.77¢ | $24.22 | $52.48 | +$28.26 |
| Minnesota | 14.98¢ | $24.57 | $52.48 | +$27.91 |
| South Carolina | 15.41¢ | $25.27 | $52.48 | +$27.21 |
| Arizona | 15.61¢ | $25.60 | $52.48 | +$26.88 |
| Texas | 15.69¢ | $25.73 | $52.48 | +$26.75 |
| Virginia | 15.87¢ | $26.03 | $52.48 | +$26.45 |
| Florida | 15.92¢ | $26.11 | $52.48 | +$26.37 |
| Alabama | 16.06¢ | $26.34 | $52.48 | +$26.14 |
| Indiana | 16.19¢ | $26.55 | $52.48 | +$25.93 |
| Illinois | 16.36¢ | $26.83 | $52.48 | +$25.65 |
| Colorado | 16.44¢ | $26.96 | $52.48 | +$25.52 |
| Delaware | 16.51¢ | $27.08 | $52.48 | +$25.40 |
| Ohio | 17.59¢ | $28.85 | $52.48 | +$23.63 |
| Wisconsin | 18.2¢ | $29.85 | $52.48 | +$22.63 |
| Washington D.C. | 18.5¢ | $30.34 | $52.48 | +$22.14 |
| Michigan | 19.52¢ | $32.01 | $52.48 | +$20.47 |
| Pennsylvania | 20.19¢ | $33.11 | $52.48 | +$19.37 |
| Maryland | 20.61¢ | $33.80 | $52.48 | +$18.68 |
| New Jersey | 23.13¢ | $37.93 | $52.48 | +$14.55 |
| Vermont | 23.29¢ | $38.20 | $52.48 | +$14.28 |
| Alaska | 25.52¢ | $41.85 | $52.48 | +$10.63 |
| New Hampshire | 26.32¢ | $43.16 | $52.48 | +$9.32 |
| Connecticut | 28.3¢ | $46.41 | $52.48 | +$6.07 |
| New York | 28.37¢ | $46.53 | $52.48 | +$5.95 |
| Rhode Island | 30.14¢ | $49.43 | $52.48 | +$3.05 |
| California | 30.29¢ | $49.68 | $52.48 | +$2.80 |
| Maine | 30.73¢ | $50.40 | $52.48 | +$2.08 |
| Massachusetts | 31.16¢ | $51.10 | $52.48 | +$1.38 |
| Hawaii | 39.79¢ | $65.26 | $52.48 | -$12.78 |
Practical Notes: Sierra EV on IONNA
The Sierra EV's NACS+CCS port plugs directly into IONNA stalls — no adapter needed. Check the IONNA app before your first session to confirm which connector your target station uses — mixed-connector deployments are common in 2026.
On a session-by-session basis, the Sierra EV's 350 kW peak charging speed is well-matched to IONNA's DC fast hardware. Expect a 10→80% charge in roughly 20 min. Real-world times run 10–20% longer due to charging taper and battery preconditioning.
Cost-wise, one $52.48 full charge on IONNA represents $0.11 per mile of driving — about 11.4¢/mile. A gas equivalent at 30 mpg and $3.50/gal is roughly 11.7¢/mile, so this charging session is still cheaper than gas. Over 15,000 miles/year, exclusive reliance on IONNA would cost roughly $2,139.13/year in fuel — a meaningful delta compared to mostly-home charging (~$1,102.99/year).
For most Sierra EV owners, the realistic use-pattern for IONNA is road trips and occasional top-ups — not primary fueling. If you live in an apartment or condo and rely on public charging as your main option, factor in the per-session pricing with no membership option. For regular home charging in a specific state, check our home vs public analysis and your Sierra EV state-by-state breakdown.
Data sources: IONNA published rate card; EPA fueleconomy.gov; manufacturer specs; EIA residential electricity averages. Charging speed and effective cost vary with temperature, state-of-charge, and station power.