EV Home Charging Calculators
Three free calculators to estimate the real cost of running an electric vehicle from home — your monthly charging bill, the time and cost difference between a standard outlet and a Level 2 charger, and how much you save by pairing your EV with home solar.
EV Home Charging Cost Calculator
Calculate your daily, monthly, and annual cost to charge your EV at home. Includes popular model comparison.
Miles or battery modeLevel 1 vs Level 2 Charger Calculator
Compare the charging time and annual cost difference between a standard 120V outlet and a 240V Level 2 charger.
Charging time includedEV + Solar Panels Savings Calculator
See how much you save combining an electric vehicle with home solar. Compares fuel cost vs charging cost including free solar miles.
UK-focusedHow EV home charging costs are calculated
Every EV charging cost comes down to three numbers: the kWh of electricity your car needs (driven by your annual mileage and your car's efficiency), the rate you pay per kWh, and the number of charging cycles. Unlike gasoline, there are no per-stop hidden costs — what you pay is exactly what your meter records.
A typical EV uses 28-35 kWh per 100 miles. Long-range Teslas hover around 28-30 kWh/100mi. Hyundai Ioniq 5 and Kia EV6 are around 32-34. Larger trucks and SUVs (Ford F-150 Lightning, Rivian R1T) consume 40-50+ kWh/100mi in real-world driving. Hot or cold weather, frequent highway driving, and roof racks all push consumption up.
Multiply your kWh/100mi by your annual mileage to get the kWh needed per year. Multiply by your electricity rate. That's your annual charging cost. Our calculators handle this automatically and include the most common EV models with verified efficiency figures.
EV vs gasoline — typical cost per 100 miles
| Country | EV (home, 30 kWh/100mi) | Petrol/gas car (30 mpg) | Saving |
|---|---|---|---|
| 🇺🇸 US | $5.10 | $12.00 | $6.90 / 100mi |
| 🇬🇧 UK | £7.35 | £18.50 | £11.15 / 100mi |
| 🇨🇦 Canada | $3.90 CAD | $11.30 CAD | $7.40 / 100mi |
| 🇦🇺 Australia | $9.60 AUD | $14.20 AUD | $4.60 / 100mi |
Assumes home charging at average residential rate, 30 mpg petrol car, $3.60/gal US, £1.45/L UK, $1.55/L CA, $1.85/L AU. EV savings scale with mileage — a 12,000 mile/year US driver saves ~$830/year.
Cheapest ways to charge an EV at home
- Switch to an EV-specific time-of-use tariff. UK options like Octopus Go, Intelligent Octopus Go, and EDF GoElectric drop the overnight rate to 7-9p/kWh — roughly one-third of the standard rate. US utilities offer similar EV plans (PG&E EV2-A, ConEd SmartCharge).
- Charge during off-peak hours. Even on a standard tariff, scheduling charging from 11pm-6am uses cheaper grid electricity in some markets and reduces strain on the system.
- Pair with home solar. Daytime charging from your own solar export rate is effectively free — you've already paid the solar capex. Set the car to charge when production peaks.
- Use a Level 2 charger. Doesn't change the rate, but allows faster off-peak windows so you can take full advantage of cheap overnight tariffs.
- Pre-condition while plugged in. Heating or cooling the battery and cabin before you unplug uses grid electricity at home-rate, not battery range.
Common questions about EV home charging
How much does it cost to charge an electric car at home?
It depends on your local electricity rate and your EV efficiency. A typical EV uses 28-35 kWh per 100 miles. At the US average rate of $0.17/kWh, that is $4.76-$5.95 per 100 miles, or roughly $50-$80 per month for a 12,000-mile-per-year driver. In the UK at 24.5p/kWh, the same usage costs around £7-£9 per 100 miles. Our Home Charging Cost Calculator does the maths for your inputs.
Is a Level 2 charger worth the extra cost?
A Level 2 (240V) home charger costs $500-$2,000 installed but charges 5-7× faster than a Level 1 (120V) plug. It does not change the cost of the electricity itself, but it eliminates "range anxiety" and lets you fully charge overnight even after a long day. For drivers covering more than 30 miles per day, Level 2 is usually worth it. Our Level 1 vs Level 2 Calculator shows the charging time difference for your specific car and daily mileage.
How much can solar panels save on EV charging?
If your solar system produces enough excess electricity to cover your EV charging, those miles are effectively free (you have already paid the upfront solar cost). For a UK driver covering 8,000 miles a year, the saving versus grid charging is typically £500-£700 annually. The trick is daytime charging — set your EV to charge during peak solar production hours. Our EV + Solar Savings Calculator quantifies this for your setup.
How long does an EV battery take to charge at home?
Level 1 (120V, 1.4kW): a typical 75 kWh battery takes 50-60 hours from empty. Level 2 (240V, 7-11kW): the same battery charges in 7-11 hours. Most drivers only charge what they used that day (say 20-40 kWh), so practical overnight Level 2 charging is 2-4 hours. Level 3 DC fast charging (50-350kW) is only available at public stations, not at home.
Is charging an EV at home cheaper than gasoline?
Yes, in nearly every country and every region. Even at higher-than-average electricity rates, home EV charging costs roughly one-third to one-half the cost per mile of a gasoline vehicle. The gap is wider at lower electricity rates and higher fuel prices. Switching to a time-of-use EV tariff (Octopus Go in the UK, off-peak plans in the US) cuts the cost further by another 50-70%.
How these calculators work
Every EV calculator shows its formula in plain text, identifies its defaults (rate per kWh, kWh per 100 miles, charging losses), and links to its sources — EIA/Ofgem/NRCan/AER for electricity rates, EPA fueleconomy.gov and DOE for EV efficiency figures. We assume 10% charging losses (typical for Level 2 home charging) unless your inputs say otherwise. See our Methodology page for the full standard.