Estimates the electricity cost of appliances based on power and usage time.
The electricity bill estimator calculates how much an appliance or household costs to run over a given period, based on power rating, hours of use per day, and the electricity tariff.
Energy (kWh) = Power (W) / 1000 × Hours per day × Days Cost = Energy (kWh) × Tariff ($/kWh)
Washing machine 2,000 W, run 1 hour/day, 30 days, tariff $0.25/kWh. Energy = 2 × 1 × 30 = 60 kWh. Cost = 60 × $0.25 = $15.00.
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