Time-of-Use Rate Optimization Calculator
TOU Rate Analysis
Compare flat rate vs time-of-use plan with load shifting
EV Charging Optimization
Optimize EV charging costs with TOU rates
Formula
Flat Cost = Usage × Flat Rate; TOU Cost = (Peak kWh × Peak Rate) + (Mid-Peak kWh × Mid Rate) + (Off-Peak kWh × Off Rate); Savings = Flat Cost − TOU Cost after load shifting
Frequently Asked Questions
What are time-of-use (TOU) electricity rates?
TOU rates charge different prices based on when you use electricity. Peak hours (typically 4-9 PM) have the highest rates, while off-peak hours (nights, early mornings) have the lowest. By shifting energy use to off-peak times, you can significantly reduce your bill.
What loads can I shift to off-peak hours?
Common shiftable loads include: EV charging (use a timer), dishwasher, clothes washer/dryer, pool pump, and water heater. Smart plugs and timers make automation easy. Pre-cooling your home before peak hours with a smart thermostat also helps. These loads typically represent 25-40% of household usage.
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