Enter your Battery Capacity, Current/Target Charge Levels, Charging Power, and your utility's Peak Rate and Off-Peak Rate, then set your Charging Start Time to calculate your Total Charging Cost — broken into Peak and Off-Peak Costs, plus Energy Needed.
Total Charging Cost
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Energy Needed
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Charging Time
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Peak Rate Cost
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Off-Peak Rate Cost
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Potential Savings
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Time-of-use rates charge different prices for electricity depending on when you use it. Peak hours (typically 8 AM to midnight) cost more, while off-peak hours (midnight to 8 AM) cost less, encouraging energy use during low-demand periods.
Savings vary by utility company and rate structure, but you can typically save 50-70% on charging costs by scheduling your EV to charge during off-peak hours instead of peak hours.
Level 1 charging (1.4 kW) uses a standard household outlet, Level 2 charging (3.3-22 kW) requires a dedicated EV charger installation. Check your EV's specifications and home charging setup to determine your charging power.
The cheapest time to charge is typically during off-peak hours, usually midnight to 8 AM. Many utilities offer the lowest rates during these hours when overall electricity demand is lowest.
Contact your utility company to enroll in their time-of-use rate program. Some utilities automatically offer these rates to EV owners, while others require you to opt-in to the program.
Yes, time-of-use rates typically apply to all electricity usage in your home, not just EV charging. This means you'll pay different rates for all appliances and devices depending on when you use them.
Charging time depends on your battery capacity, current charge level, and charging power. Level 1 charging can take 8-20 hours, while Level 2 charging typically takes 3-8 hours for a full charge.
For daily use, charging to 80% is recommended to preserve battery longevity. Only charge to 100% when needed for longer trips. Most EVs have built-in charging schedulers to optimize battery health.