Vehicle EconomicsHome Charger Payback
How long would it take a home EV charger to pay for itself?
Why this comes up
A home charger is not automatically worth installing, it only pays off if it meaningfully shifts how much of your charging happens at the cheaper home rate instead of public rates. This engine turns that shift into a concrete payback period.
How we calculated this
Annual savings is the difference in charging cost between your home share without the charger and your home share with it, using the same fuel and charging cost model. Payback months, the break-even point where cumulative savings first cover the install cost, is the install cost divided by the monthly savings.
Worked example, using this page's own defaults: shifting from 20% to 90% home charging saves $784 a year, so a $1,200 charger pays for itself in about18.4 months (1.5 years).
What this means
- A charger only pays back if it meaningfully shifts your charging mix, installing one to save a small home-share increase can take years to break even.
- If home and public rates are close, no charger will show a fast payback, the savings simply aren't there.
- See Public vs Home Charging Cost for the full ongoing cost comparison behind this payback number.
Limitations
This does not include electricity used for anything other than EV charging, or any panel upgrade cost beyond what you enter as the install cost. See Methodology.
Methodology
This engine combines Vehicle Economics' fuel and charging cost model (your own miles, MPG or kWh, and rates converted directly to a dollar cost) and break-even search model (a closed-form solve where one exists, otherwise a bounded search over a stated plausible range). See Methodology for the full detail.