Practical guide
Understanding ev charging cost comparison — sensitivity table
Everyday editorial team · GEOINNOVATION CO., LTD · Published · Updated
What this calculation is for
An electric-vehicle charging budget converts driving into energy purchases. Comparing charging with gasoline requires the same mileage basis and should not confuse battery capacity, energy consumption and charging power.
How the method works
Vehicle consumption, distance, charging rates and the named efficiency assumptions determine charging cost. Any displayed gasoline comparison uses the separately entered fuel and mileage assumptions. The displayed model uses: Annual kWh = miles ÷ vehicle efficiency; compare home/public charge costs with gas vehicle fuel spend.
A worked example
For an illustrative ev charging cost comparison scenario, use Annual miles driven: 12000 miles; Electric vehicle efficiency: 3.5 miles/kWh; Home electricity rate: 0.17 $/kWh; Comparable gas vehicle MPG: 30 MPG; Gasoline price: 3.5 $/gallon; Annual public charging costs: 300 $; Annual maintenance cost difference: -250 $. The modeled annual ev cost difference is $267.14. These are example assumptions, not current prices, official benefit amounts or personalized advice.
Assumptions and real-world differences
Home and public charging prices, session fees, weather and real charging losses vary. Battery degradation, installation costs, insurance and vehicle depreciation are outside an operating-energy comparison unless named. Vehicle purchase, insurance, charging losses, battery aging and maintenance estimates vary.
Reading the annual miles driven sensitivity table
The tool evaluates the same model across a range of annual miles driven values while holding other assumptions constant. Choose a realistic low value, high value and number of points. Each row reports the same headline measure; the table is a set of conditional calculations, not a probability distribution or a forecast. Input-step rounding can make nearby rows equal.
Reproduce this tool’s example
These fixed example inputs are independent of edits you make above. Enter them in this tool to reproduce the result, then replace them with your own assumptions.
- Minimum annual miles driven
- 6,000 miles
- Maximum annual miles driven
- 18,000 miles
- Number of comparison points
- 5 points
- Electric vehicle efficiency
- 3.5 miles/kWh
- Home electricity rate
- 0.17 $/kWh
- Comparable gas vehicle MPG
- 30 MPG
- Gasoline price
- 3.5 $/gallon
- Annual public charging costs
- 300 $
- Annual maintenance cost difference
- -250 $
Sensitivity analysis: 5 comparison points
Annual miles driven ranges from 6,000 miles to 18,000 miles.
- Annual miles driven: 6,000 miles: $-141.43
- Annual miles driven: 9,000 miles: $62.86
- Annual miles driven: 12,000 miles: $267.14
Frequently asked questions
- Is a battery’s kWh capacity the same as consumption?
- No. Capacity is stored energy; consumption describes energy used per distance traveled.
- Which inputs should I check before using this ev charging cost comparison estimate?
- Check annual miles driven, electric vehicle efficiency, home electricity rate, comparable gas vehicle mpg, gasoline price, annual public charging costs, annual maintenance cost difference. Match each field’s unit and time period, then compare the detailed rows rather than treating the headline alone as the complete answer.
- Does the most favorable row show the most likely outcome?
- No. The table assigns no likelihood to any row. It shows how the result responds to the chosen assumption, and you remain responsible for selecting a plausible range.