EV Home Charging Calculator
Find the right home charger: how long charging takes at 2.3, 7.4 and 11 kW, what it costs per year, and what a wallbox really costs with installation and incentives.
1. Your EV & usage
Typical: 7-10 h on off-peak tariff.
2. Wallbox & installation
Many regions cover 30-50%.
Off-peak rate.
Recommended wallbox
Full charge time (7 kW)
Charging cost / year
Wallbox payback
Charging speed comparison
Wallbox investment
Worked example: 60 kWh EV, 12,000 km/year
A 60 kWh EV (e.g. Nissan LEAF) driven 12,000 km/year at 16 kWh/100km, with a $500 wallbox + $400 installation and a $350 incentive:
| Item | Value |
|---|---|
| Full charge at 7 kW | ~5 h 30 min |
| Range added per hour | ~43 km |
| Energy per year | 1,920 kWh |
| Charging cost / year ($0.15/kWh) | $288 |
| Same on public DC ($0.45/kWh) | $864 |
| Net wallbox investment | $550 |
| Payback vs public charging | ≈ 1 year |
And that's just vs public rates — vs petrol the wallbox effectively pays for itself in 6-8 months.
Home charging tips
- Pick 7.4 kW unless you drive 40,000+ km/yr. It charges any EV overnight.
- Sign up for an off-peak tariff. Night rates can be 50-70% cheaper.
- Schedule charging in the app. The wallbox/car handles the timing automatically.
- Claim the incentive. Installation rebates often cover 30-50% — apply before installing.
How it's calculated
- Charge time = battery (kWh) ÷ charger power (kW), plus ~8% conversion loss.
- Cost = annual km × consumption ÷ 100 × price.
- Payback = net investment ÷ (public cost − home cost) per year.
- Installation quotes vary by region and electrical setup.
Go further with the Solar Charging calculator or the Charging Cost calculator.
Frequently asked questions
How much does a home EV charger cost?
A 7-11 kW wallbox costs $300-900, plus $200-800 for professional installation depending on your electrical panel. Total typically lands between $600 and $1,500 before incentives, which often cover 30-50% of it.
How fast does a home charger charge an EV?
A 7 kW wallbox adds about 35-45 km of range per hour — a 60 kWh EV goes from 20% to 80% in roughly 5-6 hours overnight. A 11 kW charger cuts that to 3.5-4 hours. A standard 2.3 kW socket takes 2-3x longer.
Is a 7 kW or 11 kW home charger better?
7 kW is enough for almost every driver — a full overnight charge covers 250-400 km. 11 kW helps only if you need a full charge in under 4 hours or drive very high mileage. Check your car's onboard charger supports 11 kW first.
Can I plug an EV into a regular wall socket?
Yes, with a granny cable — but it's slow (2-4 km/hour) and not ideal long-term. For safety, use a dedicated high-amp socket. A proper wallbox is faster, safer and enables cheap off-peak tariffs.
How much does it cost to install a home charger?
Installation ranges from $200 (simple, close to the panel) to $800+ if you need a sub-panel, trenching or a long cable run. Many regions offer installation rebates that cover 30-50% of the total.