Your electric bill doesn't have to be a fixed cost—most utility providers offer time-of-use (TOU) plans that let you pay less during off-peak hours. If your utility company offers this option and you're willing to shift some household tasks to cheaper times, you could trim 10–25% off your annual electricity costs. Here's how to understand the rates, identify savings opportunities, and make the switch.
How Time-of-Use Rates Work
Time-of-use pricing divides the day into peak and off-peak periods, with different rates for each. Peak hours—typically 4 p.m. to 9 p.m. on weekdays—reflect high demand and cost more per kilowatt-hour. Off-peak hours, usually late night and early morning (9 p.m. to 6 a.m.) or weekend afternoons, charge significantly less.
Your utility provider sets these windows based on regional demand patterns. For example, California utilities like PG&E charge peak rates around 35–45 cents per kWh during summer evenings, while off-peak rates drop to 15–20 cents. That 2–3x difference makes strategic timing worthwhile if you can shift usage.
Typical Rate Structures Across Providers
Most utilities offer two main TOU plan types:
- Standard TOU: Two or three time blocks per day (peak, part-peak, off-peak). Most common for residential customers; easier to understand and plan around.
- Critical Peak Pricing: Premium rates during extreme demand days (summer afternoons), with steeper off-peak discounts to encourage conservation. Available from progressive providers like Xcel Energy and some regional cooperatives.
Check your provider's website or call their residential rates department to see what plans qualify for your address. Not all neighborhoods have access to all rate structures—newer builds often have smart meter infrastructure required for TOU enrollment.
Actionable Steps to Save During Off-Peak Hours
Shift high-draw appliances to off-peak times. Water heaters, washing machines, dishwashers, and electric vehicle charging consume the most electricity. Running your dishwasher or laundry at 10 p.m. instead of 6 p.m. can save $20–40 monthly if done consistently. If you own an EV, charging between 9 p.m. and 6 a.m. can reduce charging costs by 40–60% compared to daytime rates.
Adjust your HVAC schedule. Programmable thermostats let you pre-cool your home during off-peak morning hours, then raise the temperature 2–4°F during peak evening hours. This works best in climates with moderate humidity; expect $15–30 monthly savings depending on your cooling load.
Defer discretionary usage. Plug in power tools, battery chargers, and vacuum cleaners during off-peak windows. While individually small, these habits compound over months.
Install a smart meter or demand response system. Utility providers often offer these free or subsidized to TOU customers. Smart meters let you track real-time usage and see exactly which devices drive peak-hour consumption. Some utilities provide smartphone apps showing live rates, helping you time appliance use.
Questions to Ask Your Electric Utility Provider
Before enrolling, confirm three details:
- Is there a switching fee or contract lock-in period? Most TOU plans are free to join with no minimum term, but some regional utilities charge $30–50 to enroll or have 12-month commitments.
- What's the baseline or minimum charge? Some utilities have fixed monthly fees ($5–15) independent of usage, which slightly reduces your per-unit savings on small bills.
- How is net metering handled? If you install rooftop solar, confirm how export credits work on your TOU plan. Some utilities provide different compensation rates for peak vs. off-peak solar exports.
Is TOU Right for You?
TOU plans work best if you have flexible daily routines—remote workers, retirees, and households with smart appliances see the largest savings. If you work 9-to-5 in an office or have a rigid schedule where peak-hour usage is unavoidable, savings may be limited to 2–5%.
You can simulate savings by collecting a month of hourly usage data (most utilities provide this free online) and calculating hypothetical costs under TOU pricing. Use Mercoly to compare TOU offerings from nearby providers and see which aligns with your usage patterns and rate structure.
Frequently Asked Questions
Q: How long does it take to see savings from a TOU plan? Most customers notice measurable reductions on their next bill cycle (30–60 days), with full optimization taking 3–4 months as you adjust daily habits.
Q: Can I switch back to standard rates if TOU doesn't work for me? Yes—most utilities allow penalty-free switches during annual open enrollment periods (typically spring) or, in some cases, any time with 30 days' notice.
Q: Do smart home devices like smart plugs count toward demand response incentives? Some utilities offer $5–15 monthly rebates for connected thermostats and pre-approved smart devices, though these vary widely by provider and state.
Start by requesting a TOU rate comparison from your current provider or reviewing alternative offers on Mercoly to find the plan that fits your household best.