How to decide whether a time-of-use electricity plan fits your household
Compare when your home uses power with the plan’s peak windows before changing rates or buying new equipment.
Time-of-use pricing charges different amounts at different times. It can reward a household that can shift charging, laundry, dishwashing, or cooling away from peak periods. It can also raise costs if high-use routines are fixed in the expensive hours.
Begin with your actual bill and the tariff document. Rates, peak periods, seasonal schedules, fixed charges, and opt-out rules vary by utility and sometimes by customer class. This guide offers a comparison method, not a prediction of a particular bill.
The short answer
A time-of-use plan is a schedule decision. It can help when meaningful electricity use can move outside the expensive window, but a bill history—not a promotional rate—is the right starting point.
Download several bills and the current rate sheet
Use at least a few representative months, including heating or cooling season if relevant. Mark total kilowatt-hours, demand charges if any, and how the utility presents usage by time.
Circle the plan’s costly hours
Put the utility’s peak schedule next to a normal weekday and weekend. Include seasonal changes and holidays; a plan may have different windows in summer and winter.
Identify two or three movable loads
Choose only loads your household can safely shift, such as a dishwasher delay setting or EV charging schedule. Do not assume every appliance should run unattended or overnight; follow its instructions.
Ask the utility’s precise questions
Confirm enrollment date, minimum term, transition rules, whether interval data is available, and whether a bill comparison tool uses your meter data. Keep answers with the rate document.
Review the first comparable bills
Compare usage and cost against a similar period, then decide whether the schedule is working. Revisit after household, equipment, or weather patterns change.
Make a rate-window worksheet
Write the utility’s peak, off-peak, and seasonal windows next to the appliances you can safely schedule. Compare fixed needs, such as medical equipment or cooking, with flexible tasks, such as laundry. Do not shift a safety-critical task merely to chase a rate window.
Put the guide to work
Field notes
- Find the tariff, not just the ad
- Save the official rate sheet and note peak, off-peak, super-off-peak, fixed charges, and seasonal dates. A plan name alone does not reveal the cost structure.
- Map the largest loads
- List air conditioning, electric heat, EV charging, water heating, clothes drying, cooking, and pool equipment. Estimate when each normally runs before deciding it can be shifted.
- Separate comfort from convenience
- Pre-cooling, timers, or delayed appliance cycles may be practical; making the home unsafe, uncomfortably hot, or dependent on risky extension-cord arrangements is not a savings strategy.
- Recheck after a full cycle
- Compare like weather and similar household activity. A single mild month is weak evidence for a year-round rate decision.
Make the next step useful
Put this guide on your home plan
Know when to call a professional. Stop if work involves active gas leaks, damaged service wiring, structural movement, unsafe heights, suspected contamination, or a problem you cannot confidently isolate.
Editorial review and sources
Reviewed by: Smart Homeowners Editorial Desk
Last reviewed: August 25, 2026
Original Smart Homeowners editorial; not adapted from a third-party article.