Three tested scenarios
| Scenario | Assumptions | Annual energy | Annual cost |
|---|---|---|---|
| Light viewing example | 90 W, 2 h/day, 7 days/week; 1.5 W standby for 22 h/day; $0.18/kWh | 77.745 kWh | $13.99 |
| Example viewing pattern | 90 W, 4 h/day, 7 days/week; 1.5 W standby for 20 h/day; $0.18/kWh | 142.350 kWh | $25.62 |
| Heavy viewing example | 90 W, 8 h/day, 7 days/week; 1.5 W standby for 16 h/day; $0.18/kWh | 271.560 kWh | $48.88 |
All scenarios run 7 days/week at $0.18/kWh. Values are illustrative, not market averages.
How the estimate works
The calculator prices active and standby kWh separately, then adds them. Standby hours do not overlap viewing hours.
What changes TV energy use?
- Screen size and display technology.
- Brightness, picture mode, high dynamic range, and automatic brightness.
- Hours watched and time left on without viewing.
- Quick-start, network wake, voice control, and other standby features.
Ways to reduce cost
Use an appropriate brightness or energy-saving mode, enable automatic sleep, and turn the set off when nobody is watching. Review quick-start settings only if the convenience tradeoff works for you. The smart-plug model reports a finite payback only when net annual electricity savings are positive and safe disconnection is confirmed.
Measure your television
A plug-in meter can capture typical content and settings. Measure active viewing separately from standby, or use a multi-day kWh reading that includes your normal routine without adding standby twice.
Related: game console cost · methodology · accuracy guide
Last reviewed: August 14, 2026