EnergyLabelEU
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Costs for 0.283 €/kWh · Eurostat 2026 H1

Monitors · 34″ · 3440×1440 · LED LCD

LG 34UC99

G

Uses less electricity than 5% of the 1,482 monitors, 32–42″ on the EU register. At your selected price (European Union) that is €16 a year, €164 over ten years.

Power, SDR
39.7 W
Typical 31 W
Running cost
€16 / year
4 h a day

Uses more than most comparable models: 95 % of them need less. LXZ LX34 ZA, the most efficient alternative on sale, saves about €14 a year. 73% of comparable models reach a better class than G; the most common is F. On-mode power in SDR is 39.7 W; the typical screen of this size draws 31.5 W. LG has 244 models in this group; this one is number 226 among them. On the register since 2021 and still on sale.

Where it stands

Rank 1,400 of 1,482 monitors, 32–42″ by yearly consumption. 1,399 use less.

Median 46 This model · 58 5 135 kWh ← uses less · uses more →

Next to it in the ranking

  1. F LG 40WT95UF 58 kWh −€0.06
  2. G LG 32UQ750 58 kWh same
  3. G LG 34UC99 58 kWh
  4. G LG 34WN80C 58 kWh same
  5. G LG 32UL750 58 kWh +€0.03
See the full ranking

What it will cost you

Period 34UC99 LX34 ZA Difference
1 year €16 €2 −€14
5 years €82 €12 −€70
10 years €164 €24 −€141
15 years €246 €35 −€211

Is the more efficient model worth its price?

Years of use

Enter both purchase prices to see the total cost of ownership.

Power in SDR and HDR

Cost by viewing time

Use kWh / yr € / yr
2 hours a day 29 €8
4 hours a day 58 €16
8 hours a day 116 €33

Same size, lower running cost

On sale, at least 10% less energy, same size group

Model SizeSDR W kWh / yr Saves / year in 10 years
G LG 34UC99 (this model)
34″39.7 58 — —
34″5.7 8 €14 €141
34″5.7 8 €14 €141
34″8.0 12 €13 €131
34″15.9 23 €10 €99
34″20.0 29 €8 €82

Label and product sheet

Energy class SDR / HDR
G / –
On-mode power SDR
39.7 W
Standby / networked standby
0.5 W
Screen diagonal
34″
Resolution
3440×1440
Panel
LED LCD
Refresh rate
60 Hz
Software updates (minimum)
8 years
Guarantee (supplier)
1 years
Spare parts (minimum)
8 years

Model numbers and history

Registered by LG under one model number.

34UC99

  1. Placed on the EU market
  2. First published in the EU register (EPREL)

Questions

How much does the LG 34UC99 cost to run?

At 4 hours a day it uses about 58 kWh a year according to its EU energy label. At the EU average household price of 0.283 €/kWh that is about €16 a year, or €164 over ten years.