EV Charging Cost Calculator
Get your personalized EV charging estimate in 30 seconds. Not a generic state average—we use your utility’s actual rate plan when available.
⚡ Quick estimate
3 inputs → instant result🎯 Improve your accuracy
Level up →Most calculators stop at state averages. Upload your data or enter bill numbers to get a personalized result.
📄 Green Button data upload
Download your interval usage data from your utility website (CSV format). We’ll auto-detect your on/off-peak pattern.
No file uploaded yet.
Where do I get this file?
Log into your utility account → look for “Usage” or “Green Button” → download CSV. Learn more at DOE →
📝 Enter 3 numbers from your bill
Find these on your latest electricity bill. See example ↓
Using default rate.
How to read your bill
Look for “Energy Charges” section. On-peak kWh and Off-peak kWh are usually listed separately if you have a TOU plan. Enter rates in cents (e.g., 12.5 for $0.125/kWh).
🔍 Explain my math
| Variable | Value |
|---|---|
| Calculation details will appear after your first estimate. | |
Estimates exclude applicable taxes, municipal fees, and seasonal adjustments.
🔄 Compare scenarios
See how different charging setups affect your monthly cost.
💰 How to check your rate plan
Log into your utility account or check your latest bill. Look for “Rate Schedule” or “Tariff”. Common types: Flat rate, Time-of-Use (TOU), Tiered, EV-specific. TOU plans have cheaper off-peak hours—ideal for overnight EV charging.
⏰ When is TOU worth it?
If your utility offers a TOU plan and you can shift 60%+ of charging to off-peak hours (typically 9 PM–7 AM), you could save 15–40% vs. flat rate. The break-even depends on the peak/off-peak spread and your daytime usage.
🔋 EV efficiency (kWh/100mi)
Find your EV’s rated efficiency at fueleconomy.gov. Real-world numbers vary 10–25% based on driving style, weather, and speed. This calculator uses EPA-based estimates you can customize.