How expensive is it to fill an electric car?

[EleanorFitz]

Filling an electric car costs significantly less than gasoline, typically $4 to $9 for 100 miles of home charging and $10 to $30 for the same distance at public fast chargers. The final price depends on your electricity rate, local public charging fees, driving habits, and vehicle efficiency. For a typical driver charging 80% at home, the annual cost ranges from $400 to $900, far below the $1,200+ for a comparable gasoline car.

Home Charging Costs: Your Biggest Savings Home charging, where 80% of EV owners primarily "fill up," offers the lowest cost. The U.S. national average residential electricity rate is about 16 cents per kilowatt-hour (kWh). An efficient EV like a Tesla Model 3 or Hyundai Ioniq 6 uses roughly 25 kWh to travel 100 miles. At the average rate, that's $4 for 100 miles. In regions with lower off-peak rates (as low as 9 cents/kWh), this can drop to $2.25. In high-cost areas like California (average 22-30 cents/kWh), the cost rises to $5.50 to $7.50 per 100 miles.

Public Charging Network Costs Public charging, essential for trips, varies widely. Level 2 chargers (found at malls) often cost $0.20 - $0.50 per kWh, translating to $5 - $12.50 per 100 miles. DC Fast Chargers (DCFC) are more expensive, often combining a per-kWh fee and a per-minute session fee. Networks like Electrify America or EVgo typically charge $0.40 - $0.60 per kWh. For a 100-mile charge (adding ~35 kWh), the cost is $14 to $21, plus any idle fees. Some operators offer monthly subscriptions that reduce per-kWh costs by 20-25%.

Upfront Cost: Home Charger Installation The "fill-up" cost excludes the home charging equipment. A Level 2 home charger unit costs $400 to $800. Professional installation adds $600 to $2,000, depending on electrical panel upgrades and wiring distance. Federal and local incentives can offset 30-100% of this cost. This one-time investment is crucial for achieving the lowest long-term "fueling" expenses.

Comparative Cost Breakdown per 100 Miles

Charging Type	Avg. Cost per kWh	kWh Used per 100 mi	Estimated Cost per 100 mi
Home Charging (Nat'l Avg)	$0.16	25 kWh	$4.00
Home Charging (Off-Peak)	$0.09 - $0.12	25 kWh	$2.25 - $3.00
Public Level 2 Charger	$0.20 - $0.50	25 kWh	$5.00 - $12.50
DC Fast Charger (DCFC)	$0.40 - $0.60	35 kWh (efficiency loss)	$14.00 - $21.00
Gasoline Car (30 MPG)	N/A	~3.33 Gallons	$10.00 - $16.65 (at $3-$5/gal)

Note: Vehicle efficiency (mi/kWh) varies. A less efficient electric pickup (e.g., ~45 kWh/100mi) will see costs approximately 80% higher than the figures above.

Data from the U.S. Energy Information Administration on electricity rates and J.D. Power's mobility intelligence underscore these ranges. Your actual cost is best calculated by multiplying your local electricity cost (cents/kWh) by your EV's consumption rate (kWh/100mi). The consensus is clear: for daily use, home charging provides substantial fuel savings over gasoline, while frequent long-distance fast charging narrows the financial gap.

[Marty]

I’ve been driving electric for five years in Ohio. My math is simple: I pay 11 cents per kWh at home overnight. My car uses about 30 kWh every 100 miles. That’s $3.30. My old sedan needed $12 worth of gas to go the same distance. I plug in when I get home, and it’s full by morning. The savings are real and predictable. I use public fast chargers maybe four times a year on road trips, where it’s more like a gas station price—convenient, but not my daily cost.

[ClaytonAnn]

Let’s cut through the variables. The core question is: what hits your wallet? Think of it in three layers.

First, the baseline is your home electricity bill. Find your rate on the bill—it’s in cents per kWh. Multiply that by 0.25 (for a car using 25 kWh/100mi). A 20-cent rate means $5 per 100 miles. That’s your most important number.

Second, public charging is a different beast. It’s a service with markups. You’re paying for speed and location. Fast charging rates can be double or triple your home rate, so that $5 home charge becomes $15+ on the road. It’s for convenience, not economy.

Third, don’t let the charger hardware cost scare you. It’s a one-time purchase that locks in low rates for years. Many utilities offer rebates that effectively make the charger free. The install cost is like buying a year’s worth of gas upfront, after which your “fuel” bill plummets.

[OHailey]

As a recent EV buyer in Seattle, my main concern was comparing it directly to gas. Here’s my real-world snapshot.

Home Charging: My electricity is about 14 cents/kWh. My EV gets 4 miles per kWh, so 100 miles uses 25 kWh. That’s $3.50. My previous SUV took $18 of gas (at $4.50/gal) for the same distance.

Public Charging: I used a fast charger downtown last week. The session added 35 kWh at 48 cents/kWh, costing $16.80. It gave me about 130 miles of range. That’s roughly $13 per 100 miles—cheaper than gas but triple my home cost.

The verdict? Charging at home feels almost free. Public charging feels like a premium toll for convenience. My advice: factor in where you’ll charge most often. If you have home charging, you’ll save a lot.

[Sue]

Looking at this from a total cost perspective over five years changes the view. The "fill-up" cost is just one piece.

The yearly savings on energy alone, if you drive 12,000 miles, can be $600 to $1,000 compared to gasoline. That adds up to $3,000-$5,000 over five years, which can effectively pay for the home charger installation and part of the EV's premium.

However, your location dictates everything. A friend in New York City without a driveway relies entirely on public networks. His cost per mile is higher, aligning more closely with—but still often below—gas prices. His savings come from lower maintenance, not fuel.

For the majority with home access, the strategy is to maximize off-peak charging. Many utilities have EV-specific plans with ultra-low overnight rates. Shifting your charging to those hours can slash your driving cost to 2-3 cents per mile. That’s where the most dramatic economic advantage lies, making the cost to "fill" not just cheaper, but trivially low for daily commuting. The public network is your backup for travel, not your primary expense.