Nowadays the computer monitors are rather efficient so the electricity usage of a computer monitor it 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 a period of time.

On this page you will learn:

> How much electricity does a computer monitor use

> How to calculate the electricity cost of a PC monitor

Electricity measurement units: Watt, Kilowatt or Kilowatt hour

> What is energy conservation and how does it benefit you and the environment

Alternatively, you may want to fast forward to the computer monitor electricity cost calculator.

How much electricity does a computer monitor use

All the computer monitors should have a label describing at the very least the energy consumption. Some monitors will also be labelled with information about the stand-by power consumption.

PC monitor electricity usage

If you are considering to purchase a new monitor for your PC, better have a look to 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 our while in stand by. 

0,21 / 1000 = 0,00021 kWh

Because we pay to our electricity provider 0,217 euro per every Kilowatt hour (kWh) we consume, assuming that our computer monitor is 16 hours a day in stand by mode, we will be paying 0,27 euro per year on electricity cost.

0,00021 kWh x 16 hours a day x 0,217 euro per kWh = 0.00072912 euro per day

0,00072912 euro per day x 365 days per year = 0.2661288 euro per year

Likewise, the computer monitor specifications state that it consumes 24,9 Watts per hour and doing the same calculations we can estimate that we will be paying 12 euro per year on electricity cost.

Electricity cost calculator

But, no need of doing the calculations by hand.

The calculator below can be used to estimate the energy consumption and cost of computer monitor over time. And, it can also be used to calculate the stand-by energy consumption and cost. 

You just 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:

> It has power rating of 25 Watts

> It is in use 8 hours per day and 320 days per year

> You are paying 0,2 euro (or dollars, or pounds, or …) per every kWh you consume 

You will be paying around 12 euro (or dollars, or pounds, or…) per year in electricity costs.

A few other examples from our ‘Electricity usage calculators‘ page that may be of your interest:.

Fridge electricity usage calculator icon
Refrigerator
Freezer electricity usage calculator icon
Freezer
Dishwasher electricity and water usage calculator icon
Dishwasher
Coffee machine electricity usage calculator icon
Coffee machine

Still, if you want to know the exact electricity usage of your computer monitor, your best option is to use a plug in power meter to measure the electricity consumption. 

Clicking on the image below it will redirect you to the Amazon page where you can have a look to the specifications of the power meter we use for our measurements.

All of our house appliances and devices like the washing machine, the dishwasher, the TV or the printer are plugged to 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 a period of time.

A plug in power meter displaying the power usage of a device

Electricity measurement units

Not everybody it is familiar with terms like Watts, Kilowatts or Kilowatt hours so if you would learn more about them, have a look to this YouTube video that we have prepared about this topic.

What is a Kilowatt hour (kWh)

Or you can have a look to 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)

Watt (W)
Watt
Kilowatt (kW)
Kilowatt
Kilowatt hour (kWh)
Kilowatt hour
Power, voltage, current
Power, Voltage, Current

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 on your energy bills. 

And it also does benefit the environment because conserving electricity prevents any unnecessary waste of natural resources.

Now, at individual level it may not look worth to try to save a few watts here or there. 

Still, every little counts and if hundreds or thousands of us do save a little every time, it will make an important contribution towards conserving our natural resources.

 

For example, if 9000 households would manage to save as little as 10 Watts per day (0,01 kWh) that would add to 32850 Kilowatt hour (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 euro (or dollars, or pounds, or any other currency) per kWh, we would collectively be saving nearly 6000 euro per year.

> 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.

Have a look to this page for more information about the amount of resources needed to produce electricity.
 

In any case it is clear that small energy savings do really count when looking into the bigger picture.

If you are looking for ideas to save electricity at home, have a look to this YouTube video were we show some useful tips to reduce the electricity usage at home and decrease the electricity bill. 

Two pie charts showing what home appliances and devices are using the most electricity at home.

We hope that you have found the information on this page informative and of value. 

If so, please consider to share or subscribe to our newsletter.

We dedicate a considerable amount of time and effort to create content and your support and engagement will encourage us to keep moving forward.

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