Off-Peak EV Charging: Save 30–50% on Your Electric Bill
Your electricity rate isn't one number — it changes throughout the day. By shifting your EV charging to off-peak hours, you can cut your charging bill by 30–50% without changing anything about how you drive. Here's exactly how it works and how to set it up.
What Are Time-of-Use (TOU) Rates?
Time-of-use pricing charges different rates for electricity depending on demand. When everyone's running AC and cooking dinner (4–9 PM), electricity is expensive. When most people are asleep (9 PM–7 AM), it's cheap. Utilities call these "peak" and "off-peak" periods.
| Period | Typical Hours | Typical Rate | EV Impact |
|---|---|---|---|
| Off-Peak | 9 PM – 7 AM | $0.08–$0.14/kWh | Charge here → save 30–50% |
| Mid-Peak | 7 AM – 4 PM | $0.15–$0.25/kWh | OK if needed, avoid if possible |
| Peak | 4 PM – 9 PM | $0.25–$0.55/kWh | Never charge during this window |
How Much Can You Actually Save?
The savings depend on your utility's rate spread between peak and off-peak. Here's what typical EV drivers save by switching all charging to off-peak hours (assumes 1,000 miles/month, 3.5 mi/kWh efficiency):
| Scenario | Standard Rate | Off-Peak Rate | Monthly Savings | Annual Savings |
|---|---|---|---|---|
| Moderate spread | $0.17/kWh | $0.11/kWh | $17 | $206 |
| Large spread (CA/NE) | $0.30/kWh | $0.13/kWh | $49 | $583 |
| Dedicated EV rate | $0.17/kWh | $0.08/kWh | $26 | $309 |
How to Set Up Off-Peak Charging
Step 1: Check Your Utility's TOU Plans
Call your utility or check their website for available rate plans. Many utilities now offer specific EV rate plans with deeply discounted overnight rates. Search "[your utility name] EV rate" to find options.
Step 2: Schedule Charging in Your Car
Nearly every modern EV has built-in scheduled charging. Set your "departure time" (e.g., 7 AM) and the car calculates when to start charging to be ready on time. This is the simplest approach and requires zero extra equipment.
Step 3: Use a Smart Charger (Optional)
Smart Level 2 chargers add another layer of control. Chargers like ChargePoint Home Flex, Emporia, and JuiceBox allow scheduling via their apps, often with TOU rate optimization that automatically charges during your cheapest hours.
Step 4: Switch to a TOU Rate Plan
Contact your utility to switch to a TOU plan. Some utilities allow separate meters for EV charging at even lower rates. Compare the plan's peak/off-peak rates carefully — if your overall household electricity use is high during peak hours, a TOU plan might increase your total bill even as it lowers your EV charging cost.
Utility EV Programs Worth Knowing About
Many utilities across the country now offer programs specifically designed to reduce EV charging costs. These include dedicated EV-only TOU rates with off-peak prices as low as $0.06–$0.10/kWh, rebates on Level 2 charger purchases (typically $200–$500), demand response programs that offer credits for allowing the utility to pause your charging during grid emergencies, and separate sub-meter installations that let you track and bill EV electricity independently.
Check with your specific utility — these programs are evolving rapidly and new ones launch frequently. The Database of State Incentives for Renewables & Efficiency (DSIRE) is a good starting point for finding local programs.
Common Mistakes to Avoid
Forgetting to schedule: If you plug in during peak hours without scheduling, you'll charge at the most expensive rate. Always set a schedule in your car or charger app.
Not comparing whole-bill impact: A TOU plan lowers your charging cost but raises the price of other electricity use during peak hours. Run the numbers on your total household bill, not just the EV portion.
Ignoring demand charges: Some commercial and multi-family utility plans include demand charges based on your highest single draw. A Level 2 charger pulling 48 amps could spike demand charges if you're on the wrong plan.
⚡ Calculate Your Off-Peak Savings
Enter your off-peak rate in our calculator to see exactly how much you'd save per month and year.
Open the Calculator →Frequently Asked Questions
TOU rates charge different prices depending on when you use electricity. Off-peak hours (typically 9PM–7AM) are 30–50% cheaper than peak hours (4–9PM). Many utilities offer special EV TOU plans with even deeper discounts for overnight charging.
Typical savings are 30–50% off your charging costs, translating to $180–$580 per year depending on your utility's rate spread. States with large peak/off-peak differentials (California, Northeast) offer the biggest savings.
Most EVs have built-in scheduled charging — set your departure time and the car calculates when to start. Smart chargers like ChargePoint Home Flex also offer app-based scheduling with TOU optimization.