For a low-mileage driver, usually barely. An EV tariff pays in proportion to the charging energy you move into its cheap window, and a driver who charges little has little to move — at the example rates below, a saving of a few dollars a month, which a higher daytime rate on the rest of the home’s electricity can quietly erase. The small-numbers test further down takes two minutes with your own two rates.
Key Takeaways
- An EV tariff pays by the kilowatt-hour shifted; low mileage means few kilowatt-hours and a small prize.
- At example rates, 100 kWh a month shifted saves roughly $8 — check what the tariff does to the rest of the bill before celebrating.
- Run the three-line test with your own rates: energy, gap, and the rest of the house.
- Charging mostly away from home leaves a home tariff almost nothing to discount.
Why Low Mileage Shrinks the Prize
Every tariff saving has the same shape: kilowatt-hours shifted, multiplied by the gap between the two rates. Mileage sets the first number. A high-mileage driver pushes hundreds of kilowatt-hours a month through the charger, so even a modest gap adds up. A low-mileage driver might put 100 kWh a month into the car — an example figure, but a realistic scale for light use — and the arithmetic shrinks with it.
Run it as an example. Take an example off-peak rate of 10 cents per kWh. Charging 100 kWh inside the window instead of at the U.S. average residential price of 18.31 cents per kWh saves about $8.31 that month. Double the charging and you double the saving; halve it and you are near $4. These are example sums to show the shape — your two rates and your real energy decide your figure.
The Small-Numbers Test
| Line | Where you find it | What it tells you |
|---|---|---|
| Your monthly home-charging energy | The charger app or the car’s records | The most the tariff can ever act on; low mileage keeps this small |
| The rate gap | Your standard rate minus the off-peak rate, from the tariff sheet — not the headline | What each shifted kilowatt-hour earns |
| The rest of the house | What the tariff charges for daytime electricity outside the window | Whether the saving leaks away on everything else you run |
The verdict is a comparison: your charging energy times the gap, against any extra the tariff adds to the rest of the home’s usage. If the first number is smaller, the tariff is not paying you — whatever its name suggests. Our guide to smart charging and time-of-use tariffs covers the scheduling mechanics that move sessions into the window.
When It Still Pays, Even at Low Mileage
- The gap is wide and your other usage already sits in cheap hours, so there is little daytime consumption for a higher rate to bite on.
- You charge at home almost every night. A small battery topped up daily still routes nearly all your charging through the window — the capture matters more than the total.
- Nothing else in the tariff takes the saving back. Read the whole sheet, not the car’s line alone.
And the clearest skip: if you charge mostly away from home — at work or on public chargers — there is almost nothing for a home tariff to discount, at any mileage.
The Part You Control: Landing in the Window
Whatever you decide about the tariff, the saving only exists for sessions that actually run in the cheap hours, and that is a charger feature. The EV-ACT5006T 48A wall charger supports scheduled home charging at up to 48 A, and the EV-ACS3210T portable charger adjusts from 10 to 32 A for homes on smaller circuits. Set the schedule once, in the charger or the car, and the window stops depending on memory.
Frequently Asked Questions
Is there a mileage where an EV tariff starts to pay?
No universal line exists. It is your monthly charging energy times your rate gap, weighed against what the tariff does to the rest of the bill. Two drivers at the same mileage can land on opposite answers.
I drive a plug-in hybrid. Does the same logic hold?
Yes. A smaller battery means fewer kilowatt-hours per charge, so the prize per session is smaller — but daily charging still adds up over a month, and the same three-line test decides it.
Can I use a plain time-of-use plan instead of an EV tariff?
Yes — they are different products that price the cheap window differently. Compare them with the same three numbers: your energy, the gap, and the effect on the rest of the house.
Related Reading
- Smart Charging and Time-of-Use Tariffs: How Scheduling Cuts EV Charging Costs
- Do You Need a Smart Meter for an EV Charger?
- Do Home EV Chargers Need Wi-Fi?
