EV Time-of-Use Charging Cost Calculator

Many electricity providers charge significantly less between midnight and 8 AM — the EV Time-of-Use Charging Cost Calculator shows exactly how much you save by timing your EV charge around those rates. Enter your battery capacity, current charge level, target charge level, charging power, and peak/off-peak rates, then select your charging start time to get your total charging cost, a breakdown of peak vs. off-peak costs, charging time, and potential savings from shifting to off-peak hours.

kWh

Total battery capacity of your EV

%

Current battery charge percentage

%

Desired charge level after charging

/kWh

Electricity rate during peak hours

/kWh

Electricity rate during off-peak hours

When you plan to start charging

Results

Total Charging Cost

--

Energy Needed

--

Charging Time

--

Peak Rate Cost

--

Off-Peak Rate Cost

--

Potential Savings

--

More Automotive Tools

Frequently Asked Questions

What are time-of-use electricity rates?

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.

How much can I save by charging during off-peak hours?

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.

What charging power should I select for my EV?

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.

When are the best times to charge my electric vehicle?

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.

How do I sign up for time-of-use rates?

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.

Does time-of-use pricing apply to all my home electricity usage?

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.

How long does it take to charge an electric vehicle?

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.

Should I charge my EV battery to 100% every time?

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.