Electric Vehicle Savings Calculator
Frequently Asked Questions
How much does it cost to charge an electric vehicle?
The cost to charge an EV depends on your local electricity rate and the vehicle's efficiency. The average US electricity rate is about $0.12-0.15 per kWh. For a typical EV with 3-4 miles per kWh efficiency, driving 12,000 miles annually would cost approximately $300-500 per year in electricity - significantly less than the $1,200-1,800 most drivers spend on gasoline.
What is EV efficiency and how is it measured?
EV efficiency measures how far an electric vehicle can travel on a given amount of electricity. It's commonly expressed two ways:
- Miles per kWh: How many miles you can drive on one kilowatt-hour of electricity. Higher is better (typical range: 3-5 mi/kWh).
- kWh per 100 miles: How many kilowatt-hours needed to travel 100 miles. Lower is better (typical range: 25-35 kWh/100mi).
You can find your EV's efficiency rating on the EPA fuel economy label or the manufacturer's specifications.
How long does it take to break even on an EV purchase?
Break-even time depends on several factors: the price difference between the EV and a comparable gas vehicle, annual fuel savings, and any applicable tax credits or incentives. With federal tax credits up to $7,500 and state incentives, many buyers can break even in 3-7 years through fuel savings alone. High-mileage drivers and those with access to low electricity rates break even faster.
How much CO2 does switching to an EV save?
A typical gasoline vehicle emits about 19.6 pounds of CO2 per gallon burned. For a car averaging 28 MPG driving 12,000 miles per year, that's approximately 8,400 pounds (4.2 tons) of CO2 annually. While EVs aren't zero-emission when accounting for electricity generation, they typically produce 50-70% less CO2 than gas vehicles, even when charged from the average US grid. In areas with cleaner electricity, the reduction can exceed 90%.
What factors affect real-world EV efficiency?
Several factors can impact your actual EV efficiency:
- Temperature: Cold weather can reduce range by 20-40% due to battery heating and cabin heating needs.
- Driving style: Aggressive acceleration and high speeds decrease efficiency.
- Climate control: Heating and air conditioning use battery power.
- Terrain: Hilly routes consume more energy (though regenerative braking helps).
- Speed: Highway driving at 70+ mph is less efficient than city driving.