Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Payback period
1.6
Net install cost
$1,150
Annual savings vs public charging
$700
Net savings after 5 years
$2,350
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How to use this
- 1Enter charger unit cost ($).
- 2Enter electrician install cost ($).
- 3Enter utility/state rebate ($).
- 4Enter annual charging energy needed (kWh).
- 5Enter home electricity rate ($/kWh).
- 6Enter public charging rate you'd otherwise pay ($/kWh).
- 7Read your payback period on the right — it updates as you type.
- 8Hit Share to keep the scenario or send it to someone.
About this calculator
A hardwired Level 2 home charger plus electrician install typically runs $800-$2,500 depending on panel capacity and run length. This calculator compares that upfront cost against the per-kWh savings of charging at home overnight versus relying on public Level 2 or DC fast charging, factoring in any state or utility rebate for home charger installs (many utilities offer $200-$500 rebates to encourage off-peak charging). It answers the practical question: given how much you drive, does the install cost make sense before you just keep using the public network or the included Level 1 cord.
Worked example
Using the values the calculator loads with:
Inputs
- Charger unit cost: 500 $
- Electrician install cost: 900 $
- Utility/state rebate: 250 $
- Annual charging energy needed: 3500 kWh
- Home electricity rate: 0.15 $/kWh
- Public charging rate you'd otherwise pay: 0.35 $/kWh
Results
- Payback period: 1.6
- Net install cost: $1,150
- Annual savings vs public charging: $700
- Net savings after 5 years: $2,350
What each field means
Inputs
- Charger unit cost ($)
- The charger unit cost used in the calculation, measured in $. Starts at 500 $ so you have a working example on load.
- Electrician install cost ($)
- The electrician install cost used in the calculation, measured in $. Starts at 900 $ so you have a working example on load.
- Utility/state rebate ($)
- The utility/state rebate used in the calculation, measured in $. Starts at 250 $ so you have a working example on load.
- Annual charging energy needed (kWh)
- The annual charging energy needed used in the calculation, measured in kWh. Starts at 3500 kWh so you have a working example on load.
- Home electricity rate ($/kWh)
- The home electricity rate used in the calculation, measured in $/kWh. Starts at 0.15 $/kWh so you have a working example on load. Accepted range: 0.02–0.6 $/kWh.
- Public charging rate you'd otherwise pay ($/kWh)
- The public charging rate you'd otherwise pay used in the calculation, measured in $/kWh. Starts at 0.35 $/kWh so you have a working example on load. Accepted range: 0.05–1 $/kWh.
Results
- Payback period
- Returned as a decimal number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Net install cost
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Annual savings vs public charging
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Net savings after 5 years
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Is a Level 2 charger worth it if I have a free Level 1 cord?
A Level 1 cord (regular 120V outlet) adds roughly 3-5 miles of range per hour, which struggles to fully replenish a battery overnight after a long commute. Level 2 adds 20-40 miles per hour and comfortably refills any daily driving pattern overnight, which is really a convenience and reliability argument as much as a cost one.
What drives install cost variation?
The biggest factor is panel capacity and distance from the panel to the charger location. A garage right next to the electrical panel with available capacity might cost $400-$600 to wire; a detached garage or a panel needing an upgrade can run $2,000-$4,000+. Get a quote before assuming the default numbers here.
Do utility rebates for home chargers still exist?
Many utilities offer $200-$500 rebates or bill credits for installing a networked Level 2 charger, partly because it lets them shift your charging to off-peak hours via demand-response programs. Check your utility's EV program page — DSIRE (dsireusa.org) also tracks state and utility EV incentives.
Does this make sense if I rarely use public charging anyway?
If you already have workplace charging or rarely drive beyond your home charge, the payback math weakens fast since the savings depend entirely on displaced public-charging costs. In that case, base the decision on convenience and battery longevity from slower, more consistent charging rather than payback period.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Home EV Charger Install Payback Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/home-charger-payback
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/home-charger-payback" target="_blank" rel="noopener">Home EV Charger Install Payback Calculator — RevenueLab</a> (2026).</p>
Source: [Home EV Charger Install Payback Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/home-charger-payback) (2026).