Where cheap electric rates come from and how they work

Lower electric rates for EV charging exist because utilities and grid operators offer different prices depending on when you charge and how much power you use. The cheapest rates usually happen during off-peak hours — typically late evening, overnight, and early morning — when overall electricity demand is lowest. Some utilities also offer special EV-only rate plans that cost less per kilowatt-hour than standard residential rates, sometimes 30 to 50 percent less during off-peak windows.

Time-of-use (TOU) rates are the most common structure. Your utility divides the day into peak hours (usually afternoon and early evening) and off-peak hours, and charges different prices for each. If you charge your vehicle during off-peak times, you pay the lower rate. Some utilities also offer demand response programs where you let them remotely control when your charger runs, and they pay you a credit in return.

The rates and timing vary significantly by utility and state. A utility in California may have peak hours from 4 p.m. to 9 p.m., while one in the Midwest might set them from 2 p.m. to 7 p.m. Some utilities offer summer and winter schedules with different peak windows. You need to check your specific utility's offerings to know what rates explore to you.

Key Takeaways

  • Off-peak charging rates — usually between 9 p.m. and 6 a.m. — cost significantly less than peak-hour rates at most utilities.
  • You must enroll in a time-of-use or EV-specific rate plan with your utility; standard residential rates do not include these discounts.
  • A programmable home charger or vehicle settings let you schedule charging to run only during cheap hours automatically.
  • Some utilities offer demand response programs that pay you to let them control when your charger runs during peak demand periods.
  • Rates, peak hours, and plan availability differ by utility and state, so you must contact your provider directly to see what options exist where you live.

How to find out what rate plans your utility offers

Start by visiting your utility's website and searching for "EV rates," "electric vehicle rates," or "time-of-use rates." Most utilities now have a dedicated page listing available plans. If you cannot find it online, call the customer service number on your electric bill and ask specifically whether they offer any rate plans designed for EV charging or time-of-use pricing.

When you contact your utility, ask for the following details: the off-peak hours and peak hours under each plan, the price per kilowatt-hour for each period, any enrollment fees or plan-switching costs, and whether the plan requires a smart meter or special equipment. Some utilities charge a small monthly fee to be on a TOU plan, while others do not. A few utilities require you to install a dedicated smart meter before you can enroll.

Write down the rates and hours for each plan your utility offers, then calculate what your monthly charging cost would be under each one based on how much you typically charge and when. If you charge mostly at night, a TOU plan with cheap overnight rates will save you money. If your schedule forces you to charge during peak hours, a TOU plan may cost more than your current rate.

Enrolling in a cheaper rate plan

Enrollment usually happens online through your utility's website or by phone. You will need your account number (on your electric bill) and sometimes a photo ID. Most utilities let you switch plans once or twice per year without penalty, though a few lock you in for 12 months. Ask about the cancellation policy before you enroll.

After you enroll, your utility will set up the new rates on your next billing cycle or within a few days. You should receive a confirmation email or letter with your new rate schedule. Save this document — you will need it to know exactly when peak and off-peak hours begin and end, and what you pay during each period.

Some utilities require a waiting period before you can switch plans again. If you enroll in a TOU plan and find it does not save you money because your schedule does not align with off-peak hours, you may be stuck on that plan for several months. Check the terms before you commit.

Setting up automatic charging during cheap hours

Once you are on a lower-rate plan, you need a way to charge only during off-peak hours. A programmable home charger is the most straightforward tool. Most modern Level 2 chargers sold today have a built-in timer or smartphone app that lets you set charging windows. You tell the charger what time to start and stop, and it will not deliver power outside those hours even if the vehicle is plugged in.

Many electric vehicles also have built-in scheduling features in their infotainment system or companion app. You can set a departure time and tell the vehicle to charge only between certain hours. The vehicle communicates with the charger to control when charging happens. Check your vehicle's manual or app to see if this feature is available.

If your charger and vehicle both have scheduling, use the charger's timer as your primary control and the vehicle's schedule as a backup. This prevents accidental charging during peak hours if one system fails or is misconfigured. Set your windows to end 30 minutes before peak hours begin, so you do not accidentally charge into the expensive period.

Demand response programs that pay you to shift charging

Some utilities run demand response programs where they pay you a monthly credit or per-event payment to let them remotely control when your charger runs during peak demand periods. You keep your vehicle plugged in, but the utility decides when it charges. In return, you receive a credit on your electric bill, typically between $10 and $50 per month depending on the program and your location.

These programs work best if you have a flexible charging schedule — for example, if you charge overnight and do not need the vehicle until morning. The utility will not drain your battery; they will only delay charging until off-peak hours. You set a minimum charge level you want to maintain, and the program respects that.

Enrollment is usually free, and you can leave the program at any time. Ask your utility whether they offer a demand response program for EV charging, what the monthly credit is, and whether you need special equipment beyond your existing charger. Some utilities require a smart charger; others work with any charger that has internet connectivity.

Comparing the real savings from lower rates

The actual money you save depends on three things: the difference between peak and off-peak rates, how much you charge, and how well your schedule aligns with off-peak hours. If your utility's off-peak rate is 40 percent cheaper than the peak rate, and you charge 30 kilowatt-hours per week entirely during off-peak hours, you will save roughly 40 percent of your charging costs. If you charge half during peak and half during off-peak, you save roughly 20 percent.

Calculate your potential savings by multiplying your weekly charging amount by the off-peak rate, then by 52 weeks. Compare that to what you would pay at your current rate. If the difference is less than any monthly plan fee your utility charges, the cheaper rate plan will not save you money overall.

Some people find that a TOU plan saves them $20 to $40 per month; others save $100 or more depending on how much they charge and their local rates. The only way to know your real savings is to look at your utility's specific rates and your own charging pattern.

What to do if your utility does not offer cheap EV rates

Not all utilities have rolled out EV-specific or time-of-use rate plans yet. If yours has not, you have a few options. First, contact your utility's customer service and ask when they plan to introduce EV rates. Some utilities are in the process of designing these programs and may launch them within the next year or two.

Second, check whether your state's public utilities commission has rules requiring utilities to offer time-of-use rates or EV charging plans. Some states mandate that utilities make these options available. If your utility is dragging its feet, you can file a complaint with your state's public utilities commission asking them to require the utility to offer lower EV rates.

Third, if you have the option to choose your electricity provider (in deregulated markets like parts of Texas, New York, and Pennsylvania), you can switch to a supplier that offers cheaper EV rates. This is separate from your utility and involves signing up with a competitive electricity retailer. Not all areas allow this, so check whether your address is in a deregulated market first.

Frequently Asked Questions

Do I need a special charger to use cheap EV rates?

Not necessarily. Any charger can deliver power during off-peak hours if you manually unplug it during peak hours. However, a programmable charger with a timer or app makes this automatic and much more convenient. Many modern chargers have this built in, but older models do not. Check your charger's manual or contact the manufacturer to see if it has scheduling features.

What happens if I charge during peak hours by accident?

You will pay the peak rate for that charging session. If you are on a time-of-use plan, your bill will show separate charges for peak and off-peak usage. To avoid this, set your charger's timer to prevent charging during peak hours, or use your vehicle's scheduling feature as a backup. Some chargers will not deliver power outside your programmed window even if the vehicle is plugged in.

Can I switch back to my old rate plan if the cheaper plan does not save me money?

Usually yes, but it depends on your utility's policy. Most utilities allow you to switch plans once or twice per year without penalty. A few lock you into a plan for 12 months. Before you enroll in a cheaper rate plan, ask your utility about their switching policy and any fees for changing plans mid-year.

Do demand response programs work if I need to charge during peak hours sometimes?

Yes. You set a minimum charge level — for example, 80 percent — and the program will not delay charging below that threshold. If you need your vehicle charged to 80 percent by 6 p.m. and peak hours end at 9 p.m., the program will charge you to 80 percent before peak hours start. You can also manually override the program and charge whenever you need to.

How much does it cost to enroll in a time-of-use rate plan?

Enrollment itself is free at most utilities. Some charge a small monthly fee to be on a TOU plan — typically $5 to $15 per month — but many do not. A few utilities require you to install a smart meter, which they usually install for free. Ask your utility about any fees before you enroll so there are no surprises on your first bill.