Time-of-use plans charge you different rates depending on when you use electricity. Cheap power at night, expensive power during afternoon peak hours.
The pitch is attractive: shift your heavy usage to off-peak hours and save money. But here’s what the marketing leaves out—most Texas households can’t shift enough usage to beat a flat-rate plan. The savings depend entirely on your schedule and your willingness to change when you do laundry, cooking, and dishwashing.
How Time-of-Use Pricing Works
Running your dryer at 3 PM could cost triple what it costs at 10 PM. TOU plans divide the day into pricing tiers:
Typical TOU Structure
| Time Period | Hours | Rate (Example) |
|---|---|---|
| Off-peak | 9 PM - 6 AM | 6-8 cents/kWh |
| Mid-peak | 6 AM - 2 PM, 7 PM - 9 PM | 10-12 cents/kWh |
| On-peak | 2 PM - 7 PM | 18-25 cents/kWh |
The exact hours and rates vary by provider and plan. Some plans have only two tiers (peak and off-peak), while others add a mid-peak period.
Why Peak Hours Are So Expensive
Peak pricing (2-7 PM in most Texas TOU plans) lines up with when the grid is under the most stress. Everyone comes home from work, cranks the AC, cooks dinner, and runs appliances. Wholesale electricity prices spike during these hours, and TOU plans pass that cost directly to you.
The off-peak discount (nights and early mornings) reflects the grid’s low demand. Power plants that run efficiently at steady loads can supply cheap electricity when few people are using it.
How It’s Different from Free Nights Plans
Free nights and weekends plans give you zero-cost electricity during off-peak hours but charge a significantly higher rate during daytime hours. TOU plans don’t go to zero—the off-peak rate is low, not free—but the peak rate is typically lower than what free-nights plans charge during the day.
Free nights plans: dramatic swings (free vs. very expensive) TOU plans: moderate swings (cheap vs. expensive)
For most households, TOU plans are the less risky version of time-based pricing.
Who Saves Money with TOU Plans
Four types of households consistently win with time-of-use pricing. If you don’t fit one of these profiles, a flat rate is probably cheaper.
Remote Workers Who Control Their Schedule
If you work from home and can run the dishwasher, laundry, and dryer after 9 PM, you’re shifting significant load to off-peak hours. Your AC will still run during peak hours (you’re home, after all), but deferring major appliances can reduce peak usage by 30-40%.
Night Owls
If your natural schedule means you’re most active between 9 PM and 6 AM—cooking late, doing laundry at night, running the dishwasher before bed—TOU plans reward your existing habits without requiring any behavior change.
EV Owners Who Charge at Night
Electric vehicle charging consumes 7-10 kWh per hour. Charging during off-peak hours (9 PM to 6 AM) at 7 cents per kWh versus 20 cents during peak saves $1.30 per hour of charging. Over a month of daily charging, that’s $30-40 in savings just from the EV. Combine that with general off-peak usage and TOU plans become very competitive.
See our guide on the best electricity plans for EV owners for more options.
Homes with Battery Storage or Solar
If you have a home battery system, you can charge it during off-peak hours and discharge during peak hours. Some solar homeowners with batteries can virtually eliminate peak usage, making the off-peak rate their primary cost.
For solar buyback specifics, check our Texas solar buyback programs guide.
Who Overpays with TOU Plans
TOU plans can quietly add $35+ to your monthly bill if your habits don’t match the pricing windows.
Families with Kids Home After School
Kids get home around 3 PM. They turn on the TV, open the fridge, and crank the AC. That’s right in the middle of peak pricing. If your household’s heaviest usage happens between 3-7 PM, TOU plans will cost you more than a flat rate.
People Who Can’t Shift AC Usage
Air conditioning is the single biggest electricity consumer in Texas homes, accounting for 40-60% of summer bills. You can’t “shift” AC to off-peak hours—you need it when it’s hot, which is during peak hours.
Pre-cooling your home (running AC hard before peak hours, then raising the thermostat during peak) can help, but it requires a programmable thermostat and discipline. Most people just leave the AC running when it’s 102 degrees outside.
Anyone Who Forgets
TOU plans punish forgetfulness. Start the dryer at 5 PM instead of 9 PM? That load just cost you 2-3x what it would have on a flat rate. If you’re not the type to set timers and schedule appliances, TOU plans create constant cost anxiety.
The Math: TOU vs. Flat Rate
Numbers don’t lie. Here’s a TOU plan against a flat-rate plan for a household using 1,200 kWh per month.
Scenario 1: Average Household (Can’t Shift Much)
Usage distribution: 25% off-peak, 30% mid-peak, 45% on-peak
Flat rate at 12 cents/kWh:
- 1,200 kWh × $0.12 = $144/month
TOU plan (7¢ off-peak, 11¢ mid-peak, 22¢ on-peak):
- 300 kWh × $0.07 = $21
- 360 kWh × $0.11 = $39.60
- 540 kWh × $0.22 = $118.80
- Total: $179.40/month
Result: TOU costs $35 more per month. The flat rate wins.
Scenario 2: Optimized Household (Actively Shifts Usage)
Usage distribution: 55% off-peak, 25% mid-peak, 20% on-peak
Flat rate at 12 cents/kWh:
- 1,200 kWh × $0.12 = $144/month
TOU plan (7¢ off-peak, 11¢ mid-peak, 22¢ on-peak):
- 660 kWh × $0.07 = $46.20
- 300 kWh × $0.11 = $33
- 240 kWh × $0.22 = $52.80
- Total: $132/month
Result: TOU saves $12 per month ($144/year).
The Breakpoint
To break even on most TOU plans, you need to shift at least 45-50% of your usage to off-peak hours. That’s a significant lifestyle adjustment. If you can push 55%+ to off-peak, the savings become meaningful.
How to Check If TOU Works for You
You can answer this question with data you already have. No guesswork required.
Step 1: Get Your Smart Meter Data
Texas homes with smart meters (most of the state) can access interval usage data through SmartMeterTexas.com. This shows your hour-by-hour electricity consumption for the past 12 months.
Step 2: Map Your Usage to TOU Tiers
Take your hourly data and categorize it into the TOU plan’s pricing tiers. Calculate what you’d pay under the TOU structure versus your current flat rate.
Step 3: Identify What You Can Shift
Look at your peak-hour usage and ask: what’s causing it?
- AC: Hard to shift (but pre-cooling helps)
- Laundry/dryer: Easy to shift (run at night)
- Dishwasher: Easy to shift (set delay timer)
- Cooking: Moderate to shift (depends on lifestyle)
- EV charging: Easy to shift (set charging schedule)
- Pool pump: Easy to shift (run overnight)
If AC dominates your peak usage and you live in a hot part of Texas, shifting enough to break even is difficult.
Step 4: Trial Run
Before committing to a TOU plan, try living the TOU lifestyle for a month on your current flat-rate plan. Run laundry after 9 PM. Delay the dishwasher. Set the pool pump to run overnight. If you can maintain these habits without frustration, TOU might work.
If you keep forgetting and running appliances during peak hours, stick with a flat rate.
Smart Home Tools That Help
A $25 smart plug or a thermostat schedule can shift hundreds of dollars in annual electricity costs from peak to off-peak.
Programmable Thermostats
Pre-cool your home to 72°F by 2 PM, then let the thermostat drift to 78°F during peak hours. A good programmable thermostat (Nest, Ecobee, Honeywell) automates this. You won’t even notice if the house warms a few degrees while cooling costs drop significantly.
Smart Plugs and Appliance Timers
Smart plugs let you schedule when high-draw appliances like space heaters, dehumidifiers, and window AC units turn on and off. Some have energy monitoring built in, so you can track exactly how much each device costs during different TOU periods.
Delay Start on Appliances
Most modern dishwashers, washing machines, and dryers have delay-start features. Load the dishwasher after dinner, set it to start at 9 PM. Same with the washing machine and dryer.
TOU Plans Available in Texas
Not every Texas provider offers time-of-use options. These three do, with meaningfully different structures:
TXU Energy: Offers TOU plans with two to three pricing tiers. Pairs well with their smart home programs.
Reliant Energy: Time-based plans with peak/off-peak pricing. Often bundles with smart thermostat incentives.
Rhythm Energy: Offers time-of-use options alongside their standard fixed-rate plans. Known for transparent pricing without hidden fees.
Compare specific TOU offerings from these providers in our TXU vs Reliant and Reliant vs Rhythm comparisons.
The Bottom Line
Time-of-use plans are a good deal for the right household. If you can shift 50%+ of your usage to off-peak hours—through EV charging schedules, late-night laundry, smart thermostats, and home batteries—the savings are real.
For most Texas households, a flat-rate plan is still simpler and cheaper. The average family can’t shift enough usage to overcome the peak pricing premium, especially during summer when AC runs all afternoon regardless of rates.
TOU makes sense if:
- You charge an EV at home
- You work from home and can schedule appliances
- You have solar + battery storage
- You naturally keep a late schedule
Stick with flat rate if:
- Kids are home after school running the AC
- You can’t or won’t shift appliance usage to evenings
- You forget to schedule things
- AC is your dominant electricity cost in summer
Ready to compare plans? Visit ComparePower to see TOU and flat-rate options side by side for your address.
Frequently Asked Questions
What is a time-of-use electricity plan?
A time-of-use (TOU) plan charges different electricity rates depending on when you use power. Off-peak hours (typically nights) are cheapest, while on-peak hours (typically 2-7 PM) cost the most. The goal is to incentivize shifting usage to low-demand periods.
Do time-of-use plans save money?
Only if you can shift 45-50% or more of your electricity usage to off-peak hours. Households with EV charging, flexible schedules, or home battery systems benefit most. The average Texas household that can’t shift AC usage typically pays more on a TOU plan than a flat rate.
What are peak hours for Texas electricity?
Most Texas TOU plans define peak hours as 2 PM to 7 PM on weekdays, which aligns with the hottest part of the day and highest grid demand. Some plans extend peak hours or include weekend pricing. Always check the specific plan’s EFL for exact peak/off-peak definitions.
How much can I save with a time-of-use plan?
If you successfully shift 55%+ of usage to off-peak hours, savings range from $10-20 per month ($120-240 per year) compared to a flat-rate plan. EV owners who charge overnight can save an additional $30-40 per month. If you can’t shift much usage, you’ll likely pay more, not less.