How Much Does A TV Cost To Run All Day?
Reference table
| Scenario | Power | Use time | Cost at 24.67p/kWh |
|---|---|---|---|
| 50W for 12 hours | 50W | 12 hours | 14.80p |
| 100W for 12 hours | 100W | 12 hours | 29.60p |
| 180W for 12 hours | 180W | 12 hours | 53.29p |
What to know
TV costs are usually modest compared with heating and drying appliances, but long daily use still adds up.
Practical guidance
Brightness, screen size and connected devices can change the total.
How to use this
For exact results, measure the TV, soundbar and set-top box together.
FAQs
How much for 24 hours?
A 100W TV for 24 hours costs about 59p.
Does a soundbar add cost?
Yes, especially if left on for many hours.
Are old plasma TVs expensive?
They can use much more power than modern LED TVs.
Should I unplug it?
Modern TV standby is low, but connected boxes may use more.
Last reviewed 3 May 2026. Source: Ofgem energy price cap. Figures are estimates. Actual prices vary by region, supplier, tariff, payment method and meter type.