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Tool: EV Charging Cost Calculator — 免費線上計算機 | HomeCalcPro | 列印時間:
EV Charging Cost Calculator — 免費線上計算機 | HomeCalcPro
EV Charging Cost Calculator精準試算，提供行業標準公式與即時測算結果。
Project & Material Dimensions
Estimated Material & Energy Output
EV Charging Cost & Gas Comparison Formula
Transparent mathematical methodology explained in plain English.
Full Charge Cost = (Battery kWh / Efficiency [88%]) × Electric Rate ($/kWh) | Cost/Mile = (Rate / mi/kWh) / EfficiencyCalculates energy consumed to charge an EV battery factoring in standard 88% Level 2 AC charging efficiency losses, and compares against vehicle gasoline fuel economy (MPG).
Variables Explained:
- Battery Capacity (kWh): Usable EV battery capacity (e.g. 75 kWh for Tesla Model Y / 3).
- Electric Rate ($/kWh): Residential electricity price (US avg ~$0.15–$0.16/kWh).
- Annual Mileage: Miles driven per year (e.g. 12,000 miles).
75 kWh EV Battery at $0.15/kWh vs 28 MPG Gas Car ($3.60/Gallon) for 12,000 Miles
Comparing annual charging expense against gasoline spending.
- Cost to Fully Charge (0–100% at 88% efficiency): (75 / 0.88) × $0.15 = $12.78 per full charge.
- Cost per Electric Mile (3.5 mi/kWh): ($0.15 / 3.5) / 0.88 = $0.0487/mile (~4.9¢/mi).
- Annual EV Home Charging Cost: 12,000 × $0.0487 = $584/year.
- Annual Gas Vehicle Cost: (12,000 / 28) × $3.60 = $1,543/year.
- Annual Fuel Savings: $1,543 - $584 = $959/year.
常見問題解答 (FAQ): EV Charging Cost Calculator
Click any question below to expand quick answers, formulas, and expert tips.
How much does it cost to install a Level 2 home EV charger?
Installing a 240V Level 2 home charging station typically costs $500 to $700 for the wall charger unit plus $400 to $1,200 for licensed electrician installation (subpanel and 50A breaker).
Is public DC fast charging more expensive than home charging?
Yes, public DC fast chargers (Tesla Supercharger, Electrify America) typically cost $0.35 to $0.48+/kWh, making them 2x to 3x more expensive than charging overnight at home on off-peak rates.