Time-of-Use Savings Calculator

Enter your monthly usage, peak/off-peak rates, and how much you can shift to off-peak hours to see potential savings.

⏱ ~15 sec⏰ Peak vs off-peak🔒 No signup

Result

$45.90/mo saved
Monthly savings from shifting
Flat-rate equivalent bill$252.00
Optimized TOU bill$206.10

Common shiftable loads: EV charging, dishwasher, laundry, and pool pump runtime — appliances that don't need to run at a specific time of day.

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How time-of-use savings work

Savings = Shiftable kWh × (Peak rate − Off-peak rate)

Time-of-use plans charge more during high-demand hours (typically late afternoon into evening) and less overnight or midday, so shifting flexible loads like EV charging or laundry to off-peak windows can meaningfully cut a bill without using less total electricity. This pairs naturally with an EV charging schedule set to start after peak hours end.

Frequently asked questions

Which appliances are easiest to shift to off-peak?

EV charging, dishwashers, and washer/dryer loads are the most common candidates since they can usually run on a delay timer without any inconvenience.

Is time-of-use always cheaper than a flat rate?

Not automatically — if your peak-hour usage can't realistically shift (like evening cooking and lighting), a TOU plan can sometimes cost more than a flat rate, so it's worth running your actual usage pattern through this calculator first.

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