How it works
Annual cost = watts × hours/day × devices × 365 ÷ 1,000 × tariff.
Input definitions
- Standby watts
- Enter the value in the labeled unit.
- Standby hours per day
- Enter the value in the labeled unit.
- Number of devices
- Enter the value in the labeled unit.
- Electricity price per kWh
- Enter the value in the labeled unit.
A worked example
- Standby watts
- 5
- Standby hours per day
- 20
- Number of devices
- 6
- Electricity price per kWh
- 0.25
Assumptions & limits
Uses only the values entered. Rates are illustrative inputs, not live quotes, legal rules or personalised advice. Check provider terms, local requirements and measurements before acting.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-19. Content checked against the stated method and examples. Our verification approach.
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Common questions
Should always-on network devices be treated as standby?
Use their measured average watts; some devices have no lower standby state.
How does Appliance standby annual cost calculate the result?
Annual cost = watts × hours/day × devices × 365 ÷ 1,000 × tariff.
What should I verify before using Appliance standby annual cost?
Uses only the values entered. Rates are illustrative inputs, not live quotes, legal rules or personalised advice. Check provider terms, local requirements and measurements before acting.