Saving Money with Off-Peak EV Charging
Many utilities offer time-of-use (TOU) rates where electricity costs significantly less during overnight off-peak hours. By scheduling your EV to charge during these windows — typically 9 pm to 9 am — you can cut your charging costs by 50–70%. This calculator shows exactly how much you save per charge, per month, and per year.
Typical US Off-Peak Savings
Peak rates vary from 20–35¢/kWh, while off-peak TOU rates range from 8–15¢/kWh. For a 75 kWh EV charged from 20% to 80% eight times per month, switching to off-peak charging can save $200–$500 annually.
Tips for Off-Peak Charging
Most EVs let you schedule charging start times via the companion app or the vehicle's infotainment system. Set a charge limit of 80–90% to protect battery health, and use scheduled departures for maximum convenience.
FAQ
Off-peak hours vary by utility but are typically 9 pm–9 am (approximate). Check your utility's rate schedule for exact windows.
Typically $200–$600/year depending on mileage and local rate spread. Higher-mileage drivers save more.
No — overnight charging is fine. Set a 80–90% limit rather than charging to 100% every night to protect long-term battery health.