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How much electricity does a monitor use?

The average monitor on the EU market uses 23.6 W when it is on. At 6 h a day that is 52 kWh a year, or €14.61 at €0.2832 per kWh (EU average). The most efficient tenth use 5 W (€3.10 a year), the least efficient tenth 70 W (€43.41 a year).

At a glance

  • Most efficient 10% €3.10 a year · 10.9 kWh · 5 W
  • Average model €14.61 a year · 51.6 kWh · 23.6 W
  • Least efficient 10% €43.41 a year · 153 kWh · 70 W
6 h a day
  • Electricity at €0.2832 per kWh (household price with taxes, Eurostat 2026-S1).
  • 210 g CO₂e per kWh generated in 2023 (European Environment Agency). Counts use only, not manufacturing.

By screen size

Size Models Average power Average a year Most efficient 10% a year
≤ 21″ 2,111 8.1 W €5.02 €2.03
22–24″ 2,384 16.4 W €10.20 €6.42
25–27″ 3,439 22 W €13.66 €8.75
28–32″ 1,065 30 W €18.61 €12.21
≥ 33″ 1,368 58.6 W €36.34 €15.97

By energy class

Class Models Average power Average a year
A 708 8.4 W €5.24
B 398 7.3 W €4.52
C 648 12.6 W €7.80
D 1,048 16.1 W €10.00
E 3,858 19.8 W €12.29
F 2,719 30.5 W €18.94
G 988 51.4 W €31.86

Standby

On standby the average monitor uses 0.43 W, and 0.36 W in networked standby (ready to be woken over the network). If it stays on standby for the other 18 hours of the day, that adds 2.8 kWh a year: €0.80 at €0.2832 per kWh.

The most efficient models: 25–27″ monitors

  • B

    XU2763HSU-B1

    • 27″
    • Full HD
    • LCD / LED

    €6.45 per year

    10.4 W on-mode

  • B

    XUB2763HSU-B1

    • 27″
    • Full HD
    • LCD / LED

    €6.45 per year

    10.4 W on-mode

  • B

    XUB2763QSU-B1

    • 27″
    • QHD
    • LCD / LED

    €6.64 per year

    10.7 W on-mode

  • B

    XB2792HSU-B1 A

    • 27″
    • Full HD
    • LCD / LED

    €6.64 per year

    10.7 W on-mode

See all 25–27″ monitors

From 10,367 monitors on the EU market with plausible energy data (EPREL, updated October 20, 2026). Running costs at €0.2832 per kWh (EU average, Eurostat 2026-S1) and the usage you choose above. All monitors by running cost · How we calculate