"Good guy! The electricity bill doubled just after installing the LED large screen?" A man who opened a convenience store complained to me two days ago. Let’s talk about this clearly today - how much electricity does a 1 square meter LED display consume? Don’t worry about drawing conclusions, there are many tricks here!

1. Let me tell you the conclusion first: There is really no standard answer to this matter

Let me give you a reassurance first:​The power of 1 square meter LED screen usually floats between 200-1200 watts​. What's wrong with the electricity bill that costs more than 5 times the price? You will understand by looking down.

For example, the menu screens we install for the milk tea shop and the giant advertising screens in the gym are all 1 square meter, but the power consumption is less than the power of an induction cooker. Do you know why not? Keep watching!

2. Four key factors determine the appetite of electric tigers

1. Brightness The "big eater"

• ​​Outdoor screen 4000 nits brightness​ ≈ 10 household projectors
• ​​Indoor screen 800 nits brightness​ ≈ 4 LCD TVs are on at the same time
• For every 1,000 nits of brightness increase, the power consumption will be about 15% more

2. The denser the pixels, the more power it consumes

• P2.5 screen (160,000 lamp beads per square meter) consumes 2.8 times more power than P10 screen (10,000 lamp beads per square meter)
• It's like the higher the screen resolution of a mobile phone, the more electricity it takes.

3. The use scenario is the invisible killer

• 24-hour continuous advertising screen vs. 8-hour conference room screen every day
• 24/7 monitoring large screen vs. performance rental screen that can be used and opened
• At the same power, the usage time difference is 3 times, and the electricity bill can be subtracted by a month.

4. Black technology is the power saving king

• ​​Dynamic brightness adjustment technology​Can save 30% electricity (the same principle as the automatic brightness adjustment of the mobile phone)
• New driver IC chips save 18% power than old models
• Graphene heat dissipation material allows 20% of electricity to be wasted on heat dissipation

3. Teach you step by step to calculate electricity bills

Take a practical case: a 1 square P4 indoor screen installed in a supermarket chain

• Standard power: 480 watts
• Open for 12 hours a day
• Electricity bill 1 yuan/degree
• ​Daily power consumption​: 480 watts × 12 hours = 5.76 degrees
• ​Monthly electricity bill​: 5.76 degrees × 30 days × 1 yuan = 172.8 yuan

If you use the smart power saving mode, you can save two hot pot meals a month! This is why many displays now have automatic dimming function.

Fourth and five major power-saving tips are effective

1. ​​Don't pull the brightness up​: The indoor screen is adjusted to 800 nits.
2. ​​Timed power on and off​: Automatic sleep during non-business hours
3. ​​Select a high refresh rate screen​: Screens above 1920Hz are more power-saving (unexpectedly?)
4. ​Regular dust removal​: If there is too much dust, the heat dissipation will be poor, and it will consume 5-8% more electricity.
5. ​Modular design​: Which area is broken and which one is replaced, and there is no need to consume power on the entire screen

5. Real case speech

The curved advertising screen installed in a shopping mall in Singapore last year is a typical example:

• 86% transparent screen
• Intelligent dimming + partition control
• The actual power saves 37% electricity compared to the traditional solution
• One year's photoelectric bill saves a senior engineer's monthly salary

Personal opinion time

If I want to say, staring at the power figure is like buying a car and only looking at the fuel tank size - the key is to look at the "fuel consumption" (that is, the energy efficiency ratio). Some screens on the market now seem to have low power, but the brightness attenuation is severely reduced after half a year. Doesn’t this mean saving power in white?

A truly reliable LED screen needs to do three things:

1. It can light up when it should be (such as outdoor advertisements at noon)
2. It can be saved when you save (such as automatically dimming in the middle of the night)
3. Use three to five years to reduce the brightness attenuation by no more than 20%

What do you think? The fenced screen we made for a stadium in Japan has only reduced its brightness by 12% after three years, which is much more valuable than saving the electricity bill. So, you can’t just look at the power numbers when choosing an LED screen, it depends on whether the overall solution is really worry-free.

Next time someone tells you "The LED screens are all electric tigers", so you can throw this article to him. Remember, for electricity bills, three points are based on the equipment and seven points are based on the usage!

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