How Electricity Cost Calculation Works
Appliance power consumption is measured in kilowatt-hours (kWh) by evaluating wattage draw against daily running hours and utility rates:
Daily kWh Computation
Multiply appliance wattage (W) by daily operating hours, then divide by 1,000 to convert watt-hours into kilowatt-hours (kWh).
Applying Utility Rates
Multiply total daily kWh consumption by your local electricity cost rate per kWh charged by your utility provider.
Scaling Time Periods
Project daily expenses across 30 days for monthly billing estimates or 365 days for annual energy budgeting.
📊 Benchmark Simulation (100W / 5 Hours / $0.15 per kWh)
Frequently Asked Questions
What is a kilowatt-hour (kWh)?
A kilowatt-hour (kWh) is a unit of energy equal to using 1,000 watts of power continuously for one hour.
How can I lower my household electricity bill?
Switching to LED lighting, unplugging phantom load devices, running major appliances during off-peak hours, and upgrading to energy-efficient appliances reduce costs.