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.
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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.
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
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.
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.
> 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 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.
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 don’t have access to your contract or your electricity bills, this website does show the electricity cost per country.
A few other examples from our ‘Electricity usage and electricity cost calculators‘ page that may be of your interest:
If you want to know the exact electricity usage of an air conditioner, 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 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.
Have a look to this YouTube video for more information.
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 find out the electricity usage and electricity cost of your monitor.
You can use the calculator from the ‘Electricity cost calculator’ section to find out the energy usage of a monitor overnight.
Most of the monitors go into standby mode if not used, and they use much less energy. In general, the energy usage in standby mode it is very small.
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.
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)
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.
If we could reduce our PC monitors electricity usage, even a very small amount, it would make a big impact on preserving our natural resources.
For example, if 9000 households would manage to 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 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.
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.
Buying an energy effcient appliance or device is going to save electricity, water and decrease your energy and water bills, but at what prize?
Find out if you have paid a reasonable prize for that efficient device or appliance.
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