Right now, you are probably paying the same price for electricity at 3 PM on a Tuesday as you are at 3 AM on a Saturday. That sounds fair. It is not. Because the electricity your utility delivers at 3 PM costs them two to four times more than what they deliver at 3 AM. The grid is strained, the power plants are maxed out, and demand is screaming. At 3 AM? Almost nobody is using anything. The grid is practically napping.
Here is the thing most people miss: over 60% of US utilities now offer a rate plan that lets you pay less when electricity actually costs less. It is called time-of-use pricing, and the average household that switches and shifts their heavy usage to cheaper hours saves $30 to $80 per month. Some EV owners in California are saving over $3,800 per year. That is not a typo. And the crazy part is that most people have never even heard of it.
This guide walks you through exactly how time-of-use rates work, how to check if your utility offers them, the seven biggest energy hogs you should shift to off-peak hours, and the smart devices that can automate the entire process so you save money without thinking about it. You do not have to use less electricity. You just have to use it at different times.
Key Takeaways
- Time-of-use (TOU) rates charge you less for electricity during off-peak hours (typically 9 PM - 6 AM) and more during peak hours (2 PM - 8 PM weekdays). The difference can be 2-4x.
- The cheapest electricity window is 11 PM to 6 AM — shifting heavy appliances to this window produces the biggest savings.
- Seven appliances account for most of your shiftable load: laundry, dishwasher, EV charging, water heater, pool pump, HVAC, and device charging.
- You do not need smart devices to start — a clock and changed habits work. But a $15-25 smart plug automates the savings and removes the mental load.
- Households with energy monitoring reduce consumption 10-30% in the first three months just by seeing where money goes.
- A $150-200 smart EV charger pays for itself in weeks through off-peak charging savings.
What Are Time-of-Use Rates? (No Jargon Version)
Most households pay a flat rate for electricity. Whether you run your dryer at 2 PM or 2 AM, you pay the same price per kilowatt-hour. That seems fair — until you realize that your utility does not pay the same price for power at those two times.
During hot afternoons when everyone is blasting their AC, the grid is under heavy load. Your utility has to fire up expensive "peaker" power plants just to keep up. That electricity costs them significantly more to generate and deliver. During the middle of the night, demand drops, wind turbines and baseload plants produce more power than anyone needs, and wholesale prices drop to a fraction of the daytime cost.
Time-of-use (TOU) rates reflect this reality. Instead of one flat price, you get different prices depending on when you use electricity. Use it during the expensive peak window? You pay more. Shift that same usage to the cheap off-peak window? You pay significantly less. The total amount of electricity you use does not have to change at all. Only the timing changes.
Think of it like highway tolls. Driving at rush hour? Full price. Driving at midnight? Half price or less. Same road. Same distance. Different cost — because demand is different.
Peak vs. Off-Peak vs. Super Off-Peak: When and How Much
Every utility structures their TOU windows slightly differently, but the general pattern holds across most of the country. Here is what a typical TOU rate schedule looks like.
| Time Window | Typical Hours | Rate Example | Cost Multiplier |
|---|---|---|---|
| Peak | 2 PM - 8 PM (weekdays) | $0.35-0.55/kWh | Highest (1x baseline) |
| Mid-Peak | 6 AM - 2 PM, 8 PM - 9 PM | $0.20-0.30/kWh | ~0.5x peak |
| Off-Peak | 9 PM - 6 AM | $0.10-0.18/kWh | ~0.3x peak |
| Super Off-Peak | 11 PM - 6 AM | $0.08-0.12/kWh | ~0.2x peak |
| Weekends | All day Saturday & Sunday | $0.10-0.20/kWh | Off-peak rates |
Look at those numbers. Running your dryer at 4 PM on a Wednesday might cost you $0.50 per kilowatt-hour. Running the exact same dryer at 11 PM costs $0.10. That is five times less for the same load of laundry. Over a month, those differences add up fast — especially for energy-hungry appliances like dryers, water heaters, and EV chargers.
How to Check If YOUR Utility Offers TOU Rates
Before you can save anything, you need to know what your utility offers. Here is the exact process, step by step.
1 Find Your Utility's Rate Plans Page
Go to your utility's website and look for "Rate Plans," "Pricing Options," or "Rate Schedules." You can also search Google for "[your utility name] time of use rates" — this usually brings up the right page directly.
2 Look for a TOU or "Time-Based" Option
It might be called "Time-of-Use," "Time-Based Pricing," "TOU Rate," "Flexible Pricing," or "Smart Rate." Some utilities bundle it with EV-specific plans. If you see any pricing that varies by time of day, that is a TOU plan.
3 Request a Shadow Bill Comparison
This is the most important step. Most utilities will run your last 12 months of actual usage data against their TOU rate and show you what you would have paid. This tells you whether TOU makes sense for your household before you switch. If you cannot find this tool online, call your utility and ask: "Can you run a rate comparison using my historical usage data?"
4 Check the Switch Rules
Some utilities let you switch plans monthly. Others require a 12-month commitment. A few have enrollment windows. Know the rules before you commit. Also check if there is a one-time enrollment fee (rare, but some utilities charge $5-10).
5 Install an Energy Monitor Before or Right After Switching
Once you switch to TOU, you need to see your real-time usage by time period. An energy monitor like the Emporia Vue 3 ($100-200) shows you exactly which circuits draw power during peak hours — so you know what to shift. Households with energy monitoring reduce their consumption by 10-30% in the first three months. Read our full energy monitor comparison for all options.
The 7 Biggest Energy Hogs to Shift Off-Peak
Not all electricity usage is created equal. Some appliances are easy to shift to off-peak hours. Others — like your refrigerator — run 24/7 and cannot be moved. The key is focusing on the big, flexible loads: appliances that use a lot of power and do not need to run at a specific time. Here are the seven that matter most, ranked by potential savings.
1. EV Charging — The Biggest Win
If you drive an electric vehicle, this is where TOU rates transform from "nice savings" to "life-changing savings." A typical EV uses 30-40 kWh per week. At peak rates of $0.45/kWh, that is $13.50-$18.00 per week. At super off-peak rates of $0.10/kWh, the same charge costs $3.00-$4.00. That is a difference of roughly $40-60 per month — or $480-720 per year. One California EV owner documented $3,840 in annual savings by switching to a TOU plan and charging exclusively between 11 PM and 6 AM using a smart EV charger with built-in scheduling.
The premium for a smart charger that schedules automatically ($150-200 over a basic charger) pays for itself in two to four weeks. Our EV charger comparison guide covers the best options.
2. Laundry (Washer + Dryer) — $15-30/Month Savings
Your dryer is one of the most power-hungry appliances in your home, pulling 4,000-5,500 watts per cycle. A single dryer load during peak hours might cost $2.00-2.75. That same load during off-peak hours costs $0.50-0.80. If you run 5-7 loads per week, shifting all laundry to after 9 PM or to weekends saves $15-30 per month. Most modern washers and dryers have delay-start timers built in — load the washer after dinner, set it to start at 11 PM, and move the clothes to the dryer when you wake up.
3. Dishwasher — $8-15/Month Savings
Your dishwasher uses 1,200-2,400 watts per cycle, including the heated dry function. Running it once daily at 4 PM versus 10 PM can mean a difference of $0.30-0.60 per load. Over a month, that is $8-15 in savings. This is the easiest shift of all: just run the dishwasher after dinner cleanup instead of right after. Most dishwashers have a delay-start button. Press it after you load the dishes, set it for 10 or 11 PM, and forget about it.
4. Water Heater — $10-20/Month Savings
Your electric water heater is a silent power hog, typically drawing 4,500 watts. It cycles on and off throughout the day to maintain temperature, but the heaviest use comes during morning showers and evening cooking. A smart plug with energy monitoring ($15-25) can turn your water heater off during peak hours (2-8 PM) and back on at 9 PM. Your tank holds enough hot water to coast through a few hours without reheating. This simple $15 investment saves $10-20 per month depending on your tank size and usage patterns.
5. Pool Pump — $15-25/Month Savings
If you have a pool, your pump is probably running 6-8 hours per day at 1,500-2,500 watts. That is one of the largest single loads in a pool-equipped home. Many pool owners run their pump during the day out of habit, but there is no reason it cannot run from 11 PM to 7 AM instead. The water still gets filtered. The chemicals still circulate. Your pool does not care what time it is. Shifting your pool pump to the off-peak window saves $15-25 per month, and most pool timers (both analog and digital) let you set the run window yourself.
6. HVAC Pre-Cooling — $10-25/Month Savings
This is a smart strategy that does not require you to be uncomfortable. Instead of letting your AC fight the afternoon heat at peak rates, you pre-cool your home before peak pricing kicks in. Set your thermostat to cool your house to 70-72 degrees by 1:30 PM, then let it drift up to 76-78 degrees during the peak window (2-8 PM). Your home's thermal mass holds the cool air for hours, and your AC barely runs during the most expensive period.
A smart thermostat like the Ecobee ($200-250) automates this perfectly. It can be programmed with your TOU schedule so it pre-cools before peak hours and relaxes during them — all without you touching anything. See our full smart thermostat comparison for details, and our guide on cutting your summer AC bill for more cooling strategies.
7. Battery Charging (Phones, Laptops, Power Tools) — $3-8/Month Savings
This category is smaller per device but adds up across a household. Phone chargers, laptop chargers, power tool batteries, cordless vacuum chargers, robot vacuums, electric toothbrushes — all of these can charge overnight during the cheapest window. A smart power strip ($25-40) in your home office or charging station can be set to turn on at 11 PM and off at 6 AM, automatically catching the super off-peak rates. For a household with 5-10 devices charging regularly, this saves $3-8 per month. Read our smart power strip guide for the best options.
Real Savings Calculator: Before vs. After TOU Optimization
Let's put real numbers to this. Here is what a typical household spending $220/month on electricity looks like before and after switching to TOU rates and shifting usage.
| Appliance | Before TOU (Flat Rate) | After TOU (Off-Peak) | Monthly Savings |
|---|---|---|---|
| EV Charging | $65/mo @ $0.16/kWh flat | $25/mo @ $0.10/kWh off-peak | $40 |
| Laundry | $28/mo (mixed hours) | $10/mo (all off-peak) | $18 |
| Dishwasher | $14/mo (after dinner) | $5/mo (delay to 10 PM) | $9 |
| Water Heater | $38/mo (all-day cycling) | $24/mo (off during peak) | $14 |
| HVAC (Summer) | $95/mo (reactive cooling) | $72/mo (pre-cooling strategy) | $23 |
| Device Charging | $8/mo (mixed hours) | $3/mo (overnight only) | $5 |
| Total | $248/mo | $139/mo | $109/mo |
This example includes an EV, which is the biggest single win. A household without an EV would see savings closer to $30-50 per month. A household with an EV and a pool pump? Easily $80-120 per month. The savings scale with how much flexible load you have and how consistently you shift it off-peak.
Smart Devices That Automate the Savings
You can save money on TOU rates with nothing but a clock and discipline. But most people do not maintain perfect habits forever. Smart devices automate the timing so you set it once and never think about it again. Here are the four categories that matter most, ordered by impact per dollar.
Smart Plugs with Scheduling
A smart plug sits between your appliance and the wall outlet. You set a schedule — turn on at 11 PM, turn off at 6 AM — and it handles the rest automatically. Perfect for water heaters (use a heavy-duty rated plug), space heaters, charging stations, and any appliance that draws steady power. The Kasa Smart Plug with energy monitoring shows you exactly how much each plugged-in device costs you, which is invaluable for finding waste. At $15-25 per plug, you can outfit your entire home for under $100.
Ecobee Smart Thermostat Premium
HVAC is your biggest single energy expense, and the Ecobee is purpose-built to optimize it. For TOU rate plans, you can program it to pre-cool your home before peak hours and let the temperature drift during the expensive window. Room sensors detect which rooms are actually occupied, so it does not waste energy cooling empty bedrooms. The Eco+ feature automatically responds to grid demand signals, and Ecobee reports average savings of 23% on heating and cooling — which translates to $200-350 per year for most homes. On a TOU plan, the savings are even larger because you are avoiding the most expensive per-kWh rates.
Emporia Vue 3 Energy Monitor
You cannot optimize what you cannot see. The Emporia Vue 3 clamps onto your electrical panel and tracks up to 16 individual circuits with 1-second real-time updates on your phone. On a TOU plan, this is incredibly powerful: you can see exactly which circuits draw power during peak hours and target them for scheduling or shifting. Most homeowners discover $200-500 per year in hidden waste within the first week. Solar monitoring built in. Works alongside any smart plug or thermostat to give you the complete picture. Read our full energy monitor comparison.
ChargePoint Home Flex EV Charger
If you own an EV, a smart Level 2 charger with TOU scheduling is the single highest-ROI device you can buy. The ChargePoint Home Flex delivers up to 50 amps (37 miles of range per hour of charging) and has built-in scheduling that lets you set exact start and stop times to match your utility's cheapest window. Plug in when you get home, and the charger waits until 11 PM to start — automatically catching super off-peak rates. The $150-200 premium over a basic "dumb" charger pays for itself in two to four weeks through electricity savings. Our EV charger guide has the full comparison.
Quick Comparison: All 4 Products
| Product | Price | Monthly TOU Savings | Payback | Best For |
|---|---|---|---|---|
| Smart Plug | $15-25 | $10-20 per plug | 1-2 months | Water heater, chargers |
| Ecobee Thermostat | $200-250 | $20-35 | 6-10 months | HVAC pre-cooling |
| Emporia Vue 3 | $100-200 | $15-40 (via insights) | 2-4 months | Finding peak waste |
| ChargePoint Home Flex | $400-600 | $40-60 | 2-4 weeks | EV off-peak charging |
Common Mistakes That Kill Your TOU Savings
Switching to TOU rates without a plan can actually increase your bill. Here are the mistakes to avoid.
Running heavy appliances during peak hours. This seems obvious, but it is the most common failure. If you switch to TOU and keep running your dryer at 3 PM because that is when you are home, your bill goes up — not down. Peak rates on TOU are higher than flat rates to compensate for the off-peak discount. You have to shift usage to benefit.
Ignoring weekend rates. Most TOU plans charge off-peak rates all day on weekends and holidays. That means Saturday and Sunday are free-for-all days for heavy appliance use. Batch your laundry, run the dishwasher twice, charge everything — weekends are your cheap-power window.
Forgetting about phantom loads during peak hours. Your entertainment center, home office equipment, and kitchen appliances pull standby power 24/7. During peak hours, that phantom draw costs 2-4x more. A smart power strip that kills power to idle devices during peak windows eliminates this waste. Our phantom power guide shows you exactly what each device costs in standby.
Not requesting a shadow bill comparison first. Always ask your utility to run your actual usage data against the TOU rate before you switch. If your usage is already concentrated during peak hours and you cannot shift it (for example, you work from home with heavy equipment running from 9 to 5), TOU might not be the right fit. The shadow bill comparison tells you this before you commit.
Who Should NOT Switch to TOU Rates
TOU rates are not for everyone. Here are the situations where flat rates might be the better deal.
- Home-based businesses that run heavy equipment during the day. If you operate machinery, server equipment, or commercial-grade appliances from 9 AM to 5 PM, your peak usage is locked in and cannot be shifted.
- Medical equipment that must run 24/7. CPAP machines, oxygen concentrators, and other medical devices cannot be scheduled around rate windows. The peak-hour premium would increase your bill.
- Households with no flexibility in schedule. If everyone in your home is gone from 7 AM to 6 PM and all activity happens during peak hours, TOU math does not work in your favor unless you invest in automation to handle appliances while you are away.
For everyone else — and that is most households — TOU rates combined with even basic scheduling habits produce real savings every single month.
Your TOU Action Plan: Start This Week
You do not need to do everything at once. Here is the order that produces the fastest results with the least effort.
1 Week 1: Check and Switch
Call your utility or log into your account. Ask about TOU rate plans. Request a shadow bill comparison. If the numbers work, switch. This costs nothing and takes 15 minutes.
2 Week 1: Shift the Easy Stuff
Set your dishwasher to delay-start after 9 PM. Move all laundry to evenings or weekends. Charge phones and laptops overnight. These behavior changes cost zero dollars and can save $20-40/month immediately.
3 Week 2: Add Smart Plugs
Buy 2-3 smart plugs ($15-25 each) for your water heater timer, charging station, and any other shiftable load. Set them to turn off during peak hours and turn on at 9 PM. One-time setup, permanent savings.
4 Month 1: Install an Energy Monitor
Get an Emporia Vue 3 installed on your panel. See exactly how much you are saving — and find the remaining peak-hour waste you did not know about. Households with monitoring reduce consumption 10-30% in the first three months.
5 Month 2: Optimize HVAC
If you do not have a smart thermostat, get an Ecobee and program it for TOU pre-cooling. This targets the single biggest expense on your bill and automates the savings permanently.
By the end of month two, most households are saving $30-80 per month consistently — without using any less electricity. You are just using it at smarter times. And once the automation is in place, the savings run on autopilot. You set it up once and forget about it while your bill drops month after month.
That is what taking back control of your energy costs actually looks like. Not sacrifice. Not sitting in the dark. Just awareness and timing. The electricity is the same. The comfort is the same. The price is not — and now you know how to use that to your advantage.
Ready to See Where Your Peak-Hour Money Goes?
Start with visibility. An energy monitor shows you exactly which circuits cost the most during peak hours — so you know what to shift first.
Track Your Usage: Emporia Vue 3 →Automate HVAC Savings: Ecobee Thermostat Save on EV Charging: ChargePoint Home Flex
What to Read Next
- Why Your Electricity Bill Keeps Climbing: The Data Center Effect — the structural reasons your rates keep rising and 7 ways to fight back
- Best Home Energy Monitors 2026 — in-depth comparison of the top monitors with full specs and installation details
- Best Smart Thermostats for Summer Savings 2026 — head-to-head comparison of Ecobee, Nest, and more
- Energy Vampires: Phantom Power and Your Electricity Bill — exactly how much your "off" devices cost you
- Smart Home Devices That Save You Money on Insurance — additional financial benefits of smart home automation
- Best Home EV Chargers (Level 2) 2026 — full comparison of smart EV chargers with TOU scheduling
Frequently Asked Questions
Log into your utility account online or call their customer service line and ask about time-of-use or TOU rate plans. Over 60% of US utilities now offer them, and some states like California require utilities to make them available. You can also search your utility name plus "time of use rates" online. Most utilities let you compare your current flat-rate cost against what you would pay on TOU using your actual usage data before you switch.
Peak hours typically run from 2 PM to 8 PM on weekdays, when demand on the grid is highest. Off-peak hours are usually 9 PM to 6 AM. Some utilities also offer a super off-peak window from roughly 11 PM to 6 AM with the lowest rates. Weekends and holidays are often off-peak all day. The exact hours vary by utility, so check your specific rate plan for the precise schedule.
Your bill could go up if you continue running heavy appliances during peak hours without any changes to your habits. Time-of-use rates charge 2-4x more during peak periods compared to off-peak. The savings come from shifting usage — running your dishwasher at 9 PM instead of 6 PM, doing laundry on weekends, charging your EV overnight. Most utilities let you do a shadow comparison before switching, where they show what your bill would have been on TOU using your real usage data. Always request this comparison first.
EV charging is one of the biggest wins with TOU rates. A typical EV uses around 30-40 kWh per week. At peak rates of $0.40-0.50 per kWh, that costs $12-20 per week. At off-peak rates of $0.08-0.15 per kWh, the same charge costs $2.40-6.00 per week. That is a savings of roughly $30-60 per month just from shifting when you plug in. Some California EV owners report saving over $3,800 per year by combining TOU rates with a smart EV charger that automatically charges during the cheapest overnight hours.
No. You can save money with TOU rates using nothing but a clock and changed habits — running the dishwasher after 9 PM, doing laundry on weekends, adjusting your thermostat manually before peak hours. Smart devices simply automate the process so you do not have to think about it. A smart plug with a timer ($15-25) can schedule your water heater to turn off during peak hours automatically. A smart thermostat ($200-250) can pre-cool your home before peak pricing kicks in. These devices make TOU optimization effortless, but they are not required to start saving.