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Electricity Cost Calculator

Enter device wattage, daily usage time and your electricity rate to estimate daily, monthly and yearly energy use and cost.

✓ Method reviewed · 2026-08-22
CALCULATORHow much electricity does a device cost to run?

Results are for information and preliminary estimation. For critical technical work, manufacturer data, local codes and qualified professional review take precedence.

CALCULATION ENGINEELECTRICITY-COST · R1.5.1Engine and route QA: PASS · Method and limits visible
Trust & methodology →
1Enter real inputs
2Press Calculate
3Read result with assumptions
Method & assumptions

How is it calculated?

Energy use = power (kW) × time. Cost = energy (kWh) × electricity rate. Results are estimates based on your inputs.

Example

Example: A 1200 W device used for 4 hours per day consumes about 144 kWh in 30 days.

What questions does this tool answer?

  • How much electricity does a device cost to run?
  • electricity cost calculator
  • how much does appliance cost to run
  • kwh cost calculator
WHAT CHANGES THE RESULT

Check these before using the estimate

Electrical and energy calculations are not final designs by themselves. Load profile, conductor conditions, protection, efficiency and local codes must be considered together. Sorsana tools are intended for preliminary sizing and scenario comparison.

  • Continuous and surge characteristics of the real load
  • Cable length, conductor material and ambient temperature
  • Battery, charger and inverter efficiency plus usable capacity
  • Manufacturer data and applicable local electrical codes
FAQ

Frequently asked questions

Why is electricity measured in kWh?+

A kilowatt-hour represents energy used over time. A 1 kW device running for one hour uses 1 kWh.

Does this include standby power?+

No. Add standby wattage and hours as a separate scenario if you want to include it.