Time‑of‑Use (TOU) Pricing
With TOU, the price per kWh changes by time of day. Shift flexible loads (EV, laundry, dishwasher) to off‑peak hours to save 10–20% without using less energy overall.
Typical TOU Windows (example)
| Bucket | Hours | Price |
|---|---|---|
| On‑Peak | 3–7 PM (weekdays) | $0.30 / kWh |
| Off‑Peak | All other hours | $0.09 / kWh |
Your exact windows and prices vary by utility—this page is a calculator and explainer.
TOU Savings Calculator
Tip: lower the target on‑peak % to see potential savings
Flat Plan
Bill = kWh × flat rate
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TOU Plan
Bill = (on‑peak kWh × on‑peak $) + (off‑peak kWh × off‑peak $)
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Projected Savings
Flat − TOU
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On‑Peak kWh After Shift
Lower is better
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How to win on TOU
- Pre‑cool the house before 3 PM; keep indoor RH under 60%.
- Run dishwasher & laundry after 9 PM; charge EV off‑peak.
- Set thermostat to 78–80°F when away (Texas cap 80°F).