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PC monitor power consumption and electricity cost
- Last Updated: February 24, 2023
Nowadays, computer monitors are rather efficient, so the electricity usage of a computer monitor is quite low.
Still, in case of doubt, it is advisable to check the electricity usage of our computer monitors and find out the electricity cost of using them over time.
TABLE OF CONTENTS – QUICK NAVIGATION
1. How much electricity does a PC monitor use
1.1. How to calculate power from voltage and current
2. PC monitor electricity cost calculator
2.1. How much does electricity cost
2.2. Home appliances and devices electricity calculators
3. PC monitor electricity usage monitor
4. PC monitor electricity usage FAQ
4.1. Do monitors use a lot of electricity
4.2. How much energy does a monitor use overnight
5. Electricity measurement units: Watt (W), Kilowatt (kW) and Kilowatt hour (kWh)
5.1. Electricity measurement units calculators
6. PC monitors and energy conservation
How much power does a PC monitor use
All the computer monitors should have a label describing, at the very least, the energy consumption. Some monitors will also be labeled with information about the standby power consumption.
Considering purchasing a new PC monitor, look at the specifications. The computer monitor specifications must clearly describe the power consumption.
For example, according to the energy label from our computer monitor, it uses 0,21 Watts (W) per hour while on standby.
0,21 / 1000 = 0,00021 kWh
How to calculate power from voltage and current
If you only know the voltage and current of your air computer monitor, you can calculate the power consumption in Watts using the calculator below.
For more information about Power, Voltage, and Current, scroll down to the ‘Electricity Measurement Units’ section.
PC monitor electricity cost calculator
But, no need to do the calculations by hand.
The calculator below can estimate computer monitors’ energy consumption and cost over time. And it can also be used to calculate the standby energy consumption and cost.
You need to adjust the values in the PARAMETERS section to your requirements, and the calculator will automatically display the RESULTS section.
For example:
> If your computer monitor has a power rating of 25 Watts
> f it is in use 8 hours per day and 320 days per year
> if you are paying 0,2 euros (or dollars, or pounds, or …) per every kWh you consume
You will pay around 12 euros (or dollars, pounds, or…) per year in electricity costs.
How much does electricity cost
If you don’t know how much you are paying per kWh, you should be able to find the cost per kWh on your electricity contract or in one of the electricity bills.
Alternatively, if you don’t have access to your contract or electricity bills, this website shows the electricity cost per country.
Home appliances and devices electricity calculators
Here are a few other examples from our ‘Electricity usage and electricity cost calculators‘ page that may be of your interest:
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PC monitor electricity usage monitor
If you want to know the exact electricity usage of a PC monitor, your best option is to use a plug-in power meter to measure the exact power consumption and electricity cost.
Clicking on the image below will redirect you to the Amazon page, where you can look at the specifications of the power meter we use for our measurements.
Our house appliances and devices like the washing machine, the dishwasher, the TV, or the printer are plugged into a wall socket.
So, with a power consumption meter, we can determine how much electricity our appliances or devices are using, and, more importantly, we can measure the electricity usage over time.
Have a look at this YouTube video for more information.
PC monitor electricity usage FAQ
Do monitors use a lot of electricity?
It depends on the monitor model, but, in general, monitors do not use a lot of electricity except for maybe very old models.
Find out the power usage in Watts of your computer monitor and use the calculator from the ‘Electricity cost calculator’ section to determine your monitor’s electricity usage and cost.
How much energy does a monitor use overnight?
You can use the calculator from the ‘Electricity cost calculator’ section to find out the energy usage of a monitor overnight.
Most monitors go into standby mode if unused and use much less energy. In general, the energy usage in standby mode is very small.
Electricity measurement units
Not everybody is familiar with terms like Watts, Kilowatts, or Kilowatt hours, so if you would learn more about them, look at this YouTube video we have prepared about this topic.
Electricity measurement units calculators
Or you can have a look at this electricity measurement units calculators to get a better understanding of:
> What is a Watt (W), and how to transform Watts into Kilowatts
> What is a Kilowatt (kW), and how to transform Kilowatts into Kilowatts hour
> What is a Kilowatt hour (kWh), and how to transform Kilowatts hours to other units
> What are Power (P), Voltage (V), and Current (I)
PC monitors and energy conservation
Energy conservation can be defined as the decision and the act of using less energy.
Energy conservation both benefit you and the environment
The act of saving and conserving electricity does benefit you because you will be paying less for your energy bills.
And it also benefits the environment because conserving electricity prevents unnecessary waste of natural resources.
At the individual level, it may not look worth trying to save a few watts here or there.
Still, every little one counts, and if hundreds or thousands of us save a little every time, it will make an important contribution towards conserving our natural resources.
Energy conservation calculator
Reducing our PC monitors electricity usage, even a very small amount, would greatly impact preserving our natural resources.
For example, if 9000 households save as little as 10 Watts per day (0,01 kWh) on the electricity usage of our PC monitors, that would add to 32850 Kilowatt hours (kWh) saved per year.
9000 households x 0,01 kWh per day x 365 days per year
=
32,850 kWh saved per year
That is a considerable amount of electricity, but let’s add additional perspectives for clarity:
> Assuming an average cost of 0,18 euros (or dollars, pounds, or any other currency) per kWh, we would collectively save nearly 6000 euros annually.
> To produce 32,850 kWh of electricity, it is necessary to use around 17 metric tons of coal or 56 barrels of residual fuel oil.
Look at this page for more information about the number of resources needed to produce electricity.
In any case, small energy savings do count when looking into the bigger picture.
Proven ways to save electricity at home
Suppose you are looking for ideas to save electricity at home; look at this YouTube video. We show some useful tips for reducing electricity usage at home and decreasing the electricity bill.
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