EV Charging Costs Explained: Home vs Public vs Gas
What does it really cost to charge an electric vehicle at home? We compare home charging, public stations, and gasoline — with real numbers.
Is it expensive to charge an electric car at home? No — for most drivers, home charging is one of the cheapest parts of owning an EV. On a typical residential rate, a full charge costs a few dollars, and the ongoing cost per mile is usually a fraction of what the same driving would cost in gasoline. The exact answer depends on what you are trying to decide, though: whether home charging saves money over gasoline, whether switching to a time-of-use rate plan cuts your bill further, or whether your solar system can cover your driving costs entirely. This guide walks through all three paths with the right calculator for each.
Home charging costs: what you actually pay per mile
Most EV owners charge at home overnight using a Level 2 charger (240V). At the US average electricity rate of about $0.16/kWh, charging a typical EV with a 60 kWh battery from 20% to 80% costs roughly $5.76 — delivering about 150 miles of range. That works out to $0.038 per mile, which is why home charging rarely feels expensive once you see it broken down this way.
Compare that to filling a 12-gallon gas tank at $3.50 per gallon: $42 for roughly 360 miles — about $0.117 per mile. EVs typically cost 3–5x less per mile to fuel than comparable gas cars, which is the main reason the answer to "is it expensive to charge an EV at home?" is usually no. But the exact savings depend on your local electricity rate, your vehicle efficiency, and how many miles you drive each year — plug in your own numbers below rather than relying on national averages.
Calculate your home charging cost vs gasoline
Enter your EV battery size, electricity rate, and annual mileage to see your exact per-mile cost and annual savings over a gasoline car.
Open EV Charging Cost CalculatorTOU rate optimization: how off-peak charging changes the numbers
If you are already charging at home and want to reduce that cost further, the single most effective lever is switching to a time-of-use electricity rate plan and shifting charging to off-peak hours. Most utilities offer off-peak rates between 11 PM and 7 AM when grid demand is low.
Off-peak rates often run $0.06–$0.10/kWh — roughly 40–60% lower than the flat residential rate. On a $0.08/kWh off-peak plan, that same 150-mile charge drops from $5.76 to $2.88. For a driver logging 12,000 miles per year, that difference compounds to $150–$300 in annual savings on charging alone, on top of the savings over gasoline.
The tradeoff: TOU plans charge peak rates (sometimes $0.35–$0.50/kWh) during late afternoon and early evening hours. If you run other heavy loads — a heat pump, dishwasher, or dryer — during those windows, TOU may cost more overall even if your EV charges at the right time. Model your full household usage before switching, not just the EV.
Model your TOU savings including EV charging
Enter your current flat rate, expected off-peak rate, and how much load you can shift — including overnight EV charging — to see whether a TOU plan saves money net of peak-hour exposure.
Open Time-of-Use Savings CalculatorSolar-powered charging: can your system cover your driving?
If you have rooftop solar, the question shifts from "how much does charging cost?" to "does my solar system produce enough surplus to cover my driving?" A typical EV driven 12,000 miles/year needs about 3,400–4,000 kWh of charging electricity. Whether your solar system can supply that depends on your system size, local sun hours, your other home loads, and net metering policy.
Without a home battery, you can offset nighttime EV charging via net metering credits from daytime solar surplus — but only if your utility pays full retail for exported power. With a home battery, you can store daytime solar and discharge it for overnight charging, bypassing export rates entirely and bringing your marginal per-mile cost close to zero.
Check whether your solar system can charge your EV
Enter your solar system size, annual production, home load, and EV mileage to see how much of your charging can realistically be covered by surplus solar generation.
Open Solar EV Charging Feasibility CalculatorIf you are evaluating whether adding solar specifically to cover EV charging makes financial sense, the question becomes an ROI decision. A 3–4 kW addition to an existing solar array typically covers average EV driving, and the avoided charging cost accelerates the payback on that added capacity.
Calculate the ROI of adding solar to cover your EV
Project the 25-year return on a solar system sized to offset your home electricity and EV charging costs, accounting for rate escalation, incentives, and financing.
Open Solar ROI CalculatorPublic charging: convenient but pricier
DC fast chargers (Level 3) can charge your car in 20–40 minutes, but they cost significantly more than home charging. Prices vary by network, but expect to pay $0.30–$0.60/kWh, sometimes with additional session fees. That same 60% charge that costs $5.76 at home might cost $14–$22 at a fast charger.
Level 2 public chargers at shopping centers and workplaces typically cost $0.15–$0.30/kWh, closer to home charging rates. Some are still free, though that is becoming less common. The practical rule: rely on home charging for daily driving, use public charging for road trips and emergencies.
Total cost of ownership: fuel savings in the full picture
Fuel savings are just one piece of the EV ownership picture. EVs also have lower maintenance costs — no oil changes, fewer brake replacements thanks to regenerative braking, no transmission servicing. Over 5 years and 60,000 miles, the average EV owner saves:
- Fuel: $4,000–$7,000 compared to a 30 MPG gas car at $3.50/gal
- Maintenance: $1,500–$3,000 in avoided oil changes, brake work, and transmission service
- Tax credits: Up to $7,500 federal credit on qualifying new EVs, reducing the effective price premium
If you are on a TOU plan charging at $0.08/kWh off-peak, your 5-year fuel savings rise toward the upper end of that range. If you are charging with solar at near-zero marginal cost, the fuel savings picture shifts entirely — the question becomes payback on the solar system, not per-mile charging cost.
Start with the right question
If you want to know what home charging costs today, run the EV Charging Cost Calculator. If you already know charging costs but want to cut them with a TOU plan, use the Time-of-Use Savings Calculator. If you have solar and want to know how much of your driving it can cover, start with the Solar EV Charging Feasibility Calculator.