Cost
Are TOU Rates Worth It for EV Owners?
Quick Answer
Time-of-use (TOU) rate plans save EV owners roughly $300–$600 a year when overnight charging is consistent and daytime household usage is low. When most of the household's electricity is used during peak hours, switching to TOU can actually raise the bill.
Most people assume switching to a TOU rate plan is an automatic win for EV owners. But actually, it depends on more than just when you charge — it depends on when your whole house uses electricity.
The misconception about TOU plans
Most EV owners hear the pitch and move fast: switch to a time-of-use plan, charge overnight, and cut your electricity costs by more than half. It’s true that overnight rates on EV-specific plans can drop to $0.02–$0.10/kWh, compared to $0.16/kWh on flat rates. But that’s only half the equation.
TOU plans don’t just discount overnight electricity. They also charge premium rates during peak hours — often 2–3x the flat rate. If your household can’t shift laundry, cooking, dishwashing, and AC out of the peak window, you can end up paying more than you did before, even with cheap overnight charging.
The real question isn’t “should I switch to TOU?” It’s “how much of my household electricity happens during peak hours, and can I move it?” Our EV Readiness Check factors your rate plan into the cost analysis so you can see the real number before switching.
What TOU rates actually look like
TOU rates vary dramatically by utility. Here are four real 2026 plans to anchor the math:
PG&E EV2-A (California): Off-peak around $0.31/kWh from midnight to 3pm. Peak up to $0.62/kWh from 4–9pm daily. Partial-peak fills the shoulder hours.
Georgia Power Overnight Advantage: Super off-peak $0.0219/kWh from 11pm–7am. Off-peak $0.1017/kWh. Peak $0.303/kWh, but only on summer weekday afternoons (2–7pm, June–September).
Georgia Power Nights & Weekends: Flat $0.078/kWh for all non-peak hours. Peak $0.303/kWh, same summer weekday-only window.
PECO TOU (Pennsylvania): Super off-peak $0.053/kWh from midnight–6am. Peak $0.32/kWh from 2–6pm.
Notice the pattern: overnight rates range from $0.02 to $0.31/kWh depending on utility. Peak rates range from $0.30 to $0.62/kWh. The gap between plans is bigger than the gap between overnight and peak within a plan. Your utility matters as much as your habits.
The U.S. Energy Information Administration tracks state-by-state electricity prices at eia.gov if you want to compare your flat rate against the national average before running TOU numbers.
When switching saves real money
TOU works when three things line up:
1. Your EV charges consistently overnight. Plug in by 11pm, unplug in the morning. No drift into evening peak hours after a late drive.
2. Your household’s heavy usage can shift. Dishwasher on a delay timer. Laundry after 9pm. AC pre-cooled before peak, then coasted through.
3. You don’t have huge daytime loads you can’t move — no home office running three monitors and a space heater during peak, no pool pump running mid-afternoon.
For a household charging 12,000 miles a year at 3.5 miles/kWh, that’s about 3,430 kWh of EV charging annually. On a flat $0.16/kWh plan, that’s $549/year. On Georgia Power’s Overnight Advantage at $0.0219/kWh, the same charging costs $75/year. That’s a $474 swing on charging alone — before you factor in shifted household load.
Typical real-world savings for EV owners who charge consistently overnight: $300–$600 per year. Stack solar plus a home battery on a TOU plan in a high-rate state like California or Massachusetts, and savings can push to $600–$1,500/year because stored solar covers peak hours instead of buying grid electricity at $0.62/kWh.
Sarah, one of the long-term EV owners we’ve talked to, has been on a TOU plan for most of her 10 years of Tesla ownership. Her setup is textbook: home charging overnight, Supercharger network for winter road trips. The overnight rate does most of the work, and she doesn’t think about it. That’s the point — a well-matched TOU plan should be boring.
When switching costs you money
TOU can raise your bill in four common situations:
1. Non-EV usage stuck in peak hours
If someone works from home, cooks dinner at 6pm, runs AC through 100° afternoons, and does laundry after work, most of the household’s kWh gets billed at peak. On PG&E, that’s $0.62/kWh instead of a flat $0.31/kWh. Even with cheap overnight EV charging, the peak-hour premium on everything else can eat the savings whole.
2. Fixed base service charges
California utilities including PG&E and SDG&E started separating a flat Base Services Charge from per-kWh pricing in their March 2026 rate restructuring. That fixed fee doesn’t shrink no matter how much charging you shift off-peak. It quietly eats into per-kWh savings — the CPUC publishes current rate structures at cpuc.ca.gov if you want to check what applies to your account.
3. Summer peak season stacking
Many TOU plans (Georgia Power is a good example) only apply peak pricing on summer weekday afternoons — June through September, 2–7pm. That sounds narrow. But that’s exactly when AC is running hardest. Peak pricing plus max AC load is where TOU bills spike hardest, and it can wipe out overnight savings for the rest of the year.
4. Inconsistent overnight charging
Some owners plug in the moment they get home at 6pm because the car is low. On a TOU plan, that’s $0.62/kWh for the first few hours instead of $0.02–$0.10/kWh after 11pm. A charger with delayed-start scheduling (or your car’s built-in scheduled charging) fixes this — but you have to actually use it.
Before switching, look at three months of hourly usage data if your utility provides it. Most do through their app. If most of your kWh happens between 4pm and 9pm, TOU is a bad trade. Our readiness assessment can help you figure out whether your charging pattern actually matches the plan you’re considering.
The math for a real household
Let’s run two scenarios for the same household — 12,000 EV miles/year, 800 kWh/month of non-EV usage, Georgia Power service.
Scenario A — peak-hour heavy household: 500 of the 800 monthly kWh happens during summer peak (2–7pm weekdays). EV charges reliably overnight. Overnight EV cost: ~$6/month. But summer peak household charges add ~$100/month on top of baseline. Net result: bill goes up June–September, breaks even the rest of the year. Annual savings: near zero, possibly negative.
Scenario B — shifted household: same household moves laundry, dishwasher, and AC pre-cooling to off-peak. Only 100 kWh/month falls in peak. EV still charges overnight. Annual savings vs. flat rate: roughly $450.
Same house. Same car. Same utility. Same TOU plan. The only difference is behavior — and the outcome swings by $450 a year.
If you want to see how this compares against a gas car in your specific setup, the EV vs Gas Savings Calculator walks through the fuel-cost side. And if you’re still deciding whether an EV fits your daily driving, how much it costs to charge an electric car breaks down cost-per-mile before you even get to TOU pricing.
The charger you need to actually hit those rates
TOU savings assume you can get a full charge into the overnight window. On a standard 120V outlet (3–5 miles/hour), an EV driving 40+ miles a day needs 8-10 hours to refill — which eats most of a typical 11pm–7am off-peak window with little margin for a late plug-in. A Level 2 charger (25–30 miles/hour) refills the same driving in 2-3 hours, giving you room to charge fully even if you don’t plug in until midnight.
Installing one is cheaper than most people expect once rebates stack. Most major utilities offer $200–$1,500 back on hardware and installation, and some states go further — Colorado stacks an additional $5,500 on top of its state EV programs. The federal 30C credit covers 30% of hardware plus installation, up to $1,000, but it expires June 30, 2026, so it’s only useful if you install soon. Check afdc.energy.gov for what your state and utility currently offer before you install — funding is often first-come, first-served and runs out mid-year.
How to actually decide
A quick checklist before switching to TOU:
Pull your last 12 months of hourly usage data from your utility.
Identify what percentage of your kWh currently falls in the plan’s peak window.
Ask honestly: which of those loads can I shift? Dishwasher, laundry, and pool pumps are easy. AC in a heat wave and home-office computing are not.
Check for fixed base charges that will apply regardless of when you use power.
Confirm your EV or charger can schedule delayed-start charging.
Run the math with real rates from your utility’s TOU tariff sheet — not generic averages.
If the shifted-load percentage looks solid and your charging habits are consistent, TOU usually pays off. If you’re stuck with heavy peak-hour usage you can’t move, a flat rate is often cheaper. And if you’re still working out whether an EV fits your life at all — regardless of rate plan — the EV Readiness Check is a good place to start.
The TOU decision isn’t about being clever with rate plans. It’s about matching your household’s actual usage pattern to a pricing structure that rewards it. When those two things line up, you save real money quietly, every month. When they don’t, the plan works against you.
Ready to find out if you’re EV ready?
Answer 5 quick questions about your charging access, daily mileage, and home setup. You’ll get a clear answer based on your actual situation — not assumptions.
Take the EV Readiness Quiz →Frequently asked questions
How much can EV owners actually save with a TOU rate plan?
Typical savings for EV owners who consistently charge overnight (roughly 11pm–7am) run $300–$600 per year compared to flat-rate billing. In high-rate states like California, Massachusetts, or New York, stacking solar and a home battery on top of a TOU plan can push savings to $600–$1,500 per year, because stored solar covers peak-hour household usage instead of buying grid electricity at $0.50–$0.62/kWh. Actual savings depend heavily on your utility’s specific TOU tariff — overnight rates range from around $0.02/kWh (Georgia Power Overnight Advantage) to $0.31/kWh (PG&E EV2-A) — so the same behavior produces very different outcomes across service territories.
Can a TOU plan actually raise my electricity bill?
Yes, in several common situations. If most of your household’s electricity is used during peak hours (typically 2–9pm) and you can’t shift it — home office computing, dinner cooking, AC during heat waves, pool pumps running mid-afternoon — you’ll pay 2–3x the flat rate for that usage. Fixed base service charges introduced in 2026 by some California utilities also don’t shrink no matter how much you shift off-peak. Summer peak stacking (AC load plus peak pricing on summer weekdays) is another common cost trap. If overnight charging drifts into peak hours because you plug in right after an evening drive, that also erodes the rate advantage.
What’s the difference between a general TOU plan and an EV-specific rate plan?
General TOU plans apply time-based pricing to your entire household usage. EV-specific plans (like PG&E’s EV2-A or Georgia Power’s Overnight Advantage) usually offer a deeper super off-peak discount in the overnight window (11pm–7am is common) specifically to incentivize EV charging then. The tradeoff is often a higher peak rate on the same plan. EV-specific plans typically save more if your EV charging is a large share of your monthly kWh and your non-EV usage is either small or already shifted to off-peak hours.
How do I know if my household can shift enough usage to make TOU worthwhile?
Pull your last 12 months of hourly interval data from your utility (most provide it in their online portal or app). Calculate what percentage of your total kWh currently falls inside the plan’s peak window. Then look at those peak-hour loads specifically: dishwasher, laundry, and pool pumps are easy to move with timers. AC pre-cooling before peak works in many climates. Home-office computing during work hours and cooking around dinnertime are harder to shift. If more than roughly 20–25% of your usage is stuck in peak hours after realistic shifting, TOU probably isn’t a win.
Do I need a Level 2 charger to benefit from TOU rates?
Not necessarily. Level 1 charging (a standard 120V outlet) delivers 3–5 miles of range per hour. If you drive under 40 miles per day, plugging in at 11pm and unplugging by 7am on a Level 1 charger is enough to cover daily driving entirely at super off-peak rates. For daily commutes of 40–100 miles, Level 2 makes TOU work better because you can fit a full charging session inside the overnight window. What matters more than charger speed is whether your car or charger can schedule delayed-start charging so plugging in early doesn’t mean paying peak rates for the first few hours.
Are fixed base service charges on TOU plans common?
They’re becoming more common. Several California utilities, including PG&E and SDG&E, began separating a flat Base Services Charge from per-kWh pricing in their March 2026 rate restructuring. This charge is billed regardless of how much electricity you use or when you use it, which means it doesn’t shrink when you shift load off-peak. Utilities in other states are watching this model. Before switching to a TOU plan, read the current tariff sheet — not marketing materials — and specifically look for fixed monthly charges, minimum bills, and demand charges that apply on top of the per-kWh rate.
Can I switch back if TOU doesn’t work out?
In most cases yes, but the rules vary by utility. Some allow you to switch rate plans once every 12 months. Others require you to stay on the plan for a minimum period (often one full billing year) before returning to a flat rate. A few require you to stay on a TOU/EV plan permanently once you switch. Check your utility’s rate change policy before signing up. It’s also worth running two or three months on TOU and comparing your actual bills against what a flat-rate bill would have been (some utilities show this comparison automatically), so you have real data before making the switch permanent.