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EV Fast Charging Cost Calculator

Enter the price from the charging app and how many kilowatt-hours you expect to add. You get the session cost, the same energy at home, and whether a monthly membership is worth it.

This session
Monthly membership check
Session $22Home $8Full results ↓

Session cost

This fast-charge session
$22
Same energy at home
$8

Fast charging costs about $14 more than home for this session.

Miles added132
Fast charging per mile$0.17
Home charging per mile$0.06

Membership this month

The membership saves money at this monthly volume.

Break-even is about 68 kWh. Estimated difference versus paying the standard price:$2.

Energy only, plus any session or idle fees you enter. Excludes parking, taxes shown as a separate line, and subscription fees other than the one above.

How the session price is built

  • Energy = kWh added × the per-kWh price in the app. Networks meter at the charger, so this does not add home charging losses.
  • Session fee = a flat charge some networks add on top of energy. Use 0 if yours does not.
  • Idle fee = minutes the car stays plugged in after charging × the per-minute rate. Unplugging when it finishes makes this zero.
  • Home comparison = the same battery kWh ÷ 0.90 × your residential rate. The 90% is the Level 2 wall-to-battery figure used in our charging cost calculator.

How the membership check works

Monthly savings = kilowatt-hours you will fast charge × (standard price − member price) − the monthly fee. Break-even is the fee divided by that per-kWh gap. If the member price is not actually lower, the tool says the membership does not pay.

The default gap is Tesla’s October 2026 Supercharger index, not the national $0.55 average. Other networks use different plans. Replace both prices with the two rates your app shows. The worked example is in the commute charging guide.

FAQ

How much does public fast charging cost in the US?

DCFC Tracker put the national non-member average at $0.550 per kWh on October 11, 2026. That is an average across tracked sites, not your stall. Nebraska was near $0.39 and Hawaii was about $1.06 the same day. Enter the price the app shows before you plug in.

Why is fast charging so much more than home charging?

A DC fast charger carries equipment, demand charges, and network costs that a home meter does not. At the national average, 40 kWh is about $22. The same energy at the June 2026 US residential rate, after typical Level 2 losses, is about $8.

When does a Supercharging membership pay for itself?

DCFC Tracker’s October 2026 Supercharger index averaged $0.624 per kWh at the standard rate and $0.434 for members. At a $12.99 monthly fee, that $0.19 gap covers the fee after about 68 kWh. Confirm the current fee in the Tesla app. The membership is for non-Tesla drivers; Tesla owners are already billed at the lower rate.

Estimates for research only. Stall prices change by hour and location. Last verified 2026-10-11.