Laptops consume between 20 and 50 watts of power on average. This amount can be reduced by turning on power save mode on laptops, which makes energy use more efficient. A darker screen, reduced functions, and other energy-saving techniques may be included in power-saving mode.
What is the average amount of energy used by a laptop per hour?
Laptops use 0.34 watts in Off mode, 0.78 watts in Sleep mode, 2.45 watts in Long Idle mode, and 5.91 watts in Short Idle mode, on average, each hour, according to a research of 1,084 models.
The most frequent wattage consumption of today’s best-selling laptops is 65W. (max). This laptop would use 32.5 watt hours of electricity per hour if Active mode used half of its power rating (which is close to the findings of my test below).
Assume an average daily usage of 14.3 hours in Off mode, 0.3 hours in sleep mode, and 9.4 hours in combined Idle and high performance modes, similar to ENERGY STAR.
These findings are based on standardized tests done for ENERGY STAR certification on 1,084 computers. Energystar.gov provided the information for the 1,084 computers. As a result, these results apply to the best-performing laptops available.
Off mode consumes less power than Sleep mode. Off mode, on the other hand, consumes more electricity per day than Sleep mode due to the projected period of use in each mode.
Laptops consume 55.45 watt hours of electricity per day on average. However, the most typical consumption is 47.12 watt hours. Laptops use between 6.3 and 230 watt hours a day on average, depending on how they are used.
However, there will be extreme usage situations. However, these findings are based on normal usage of today’s popular computers.
Laptops use an average of 1,686.6 watt hours of electricity every month, with 1,433.33 watt hours being the most prevalent. Laptops utilize anywhere from 191.67 to 7,025 watt hours per month.
When we look at the annual data, the quantity of watts that laptops consume becomes more relevant.
Laptops use an average of 20,238.8 watt hours per year, while 17,200 watt hours is the most prevalent. Each year, laptops consume between 2,300 and 84,300 watt hours of electricity.
The number of watts consumed every year varies a lot. This emphasizes the importance of selecting an energy-efficient, ENERGY STAR-certified notebook.
How many watts my laptop usesa real world test
I measured the real power consumption of my ASUS VivoBook 14 laptop using an energy monitor / smart plug (see out the one I used on Amazon here).
The ASUS VivoBook consumes the following amount of power:
- In Off mode, the power consumption is 0.33 watts.
- In Sleep mode, the power consumption is 3.89 watts.
- While writing on Google Docs, I used 19.6 watts in Active mode.
- While streaming YouTube, the active mode draws 21.5 watts.
- According to the manufacturer, the maximum power usage is 45 watts (I didn’t manage to reach this wattage).
I was merely interested because I didn’t complete these tests under the regulated test settings required for ENERGY STAR certification.
While I was at it, I wondered how many watts the charger consumes when it’s plugged into the socket but not connected to the laptop. Next, let’s take a look at the test’s results.
How many watts does a laptop charger use
When a laptop charger is plugged into an outlet but not plugged into the laptop, it can continue to use electricity.
Modern chargers are more efficient, decreasing and, in some cases, completely eliminating waste.
When the laptop charger I tested was put into the outlet rather than the laptop, it did not consume any electricity.
However, a word of caution is necessary. My energy monitor only measures 1 watt to two decimal places. As a result, the charger could be consuming a hundredth of a watt, but the energy monitor won’t detect it.
Power is consumed when the charger is hooked into the laptop. This is the situation “Off mode, where 0.33 watts per square meter were spent.
Do you need assistance selecting the correct laptop charger? Here’s where you can learn everything you need to know about laptop voltage, including safety considerations: Laptop charger voltage.
Sidenote: Many internet sources confuse the charger’s power / wattage rating with the number of watts it consumes. You may expect your charger to use very little electricity. In many / most circumstances, when a gadget is plugged into the charger but is still in Off mode, the device / charger will drain less than 1 watt (when the battery is already fully charged).
Okay, I’ve completed my real-world testing. Let’s return to the data I stated before “The gaming laptops are the outliers. Next, let’s take a quick check at the wattage of these.
How many watts does a gaming laptop use?
The power consumption of gaming laptops ranges from 35W to 320W, and in some cases even more. In non-gaming modes, the amount of watts utilized ranges from 0 watts in Off mode to roughly 20 watts in Idle mode.
Gaming laptops, on the other hand, require substantially more watts in high performance mode than standard laptops.
The Total Graphics Power (TGP) of ASUS gaming laptops, specifically their ROG variants, ranges from 35W to 150W, with 115W being the most frequent. With a dynamic increase, GPU power can range from 40 to 150 watts, with 130 watts being the most popular. Source
It’s not unrealistic to believe that off-the-shelf gaming laptops consume 2-5 times the power of a conventional laptop.
It’s easier to work with kWh when looking at the number of watts that laptops use over long periods of time. One kilowatt-hour equals 1,000 watts.
Let’s look at laptop power usage in kWh for convenience and to assist calculate the cost of running computers.
Laptop power consumption (kWh)
The table below shows how much energy laptops consume per day, month, and year.
The data in this table is similar to the data in the table above, and the usage assumptions are the same.
We can easily calculate the electricity cost using the power consumption in kWh. Assuming a 15-cent per-kWh price (the US average, according to Statista), the following is the result:
On average, a laptop costs $0.00825 per day, $0.25 per month, and $3.04 per year to run.
The statistics in the table above are the study’s average figures. The power usage ranges from very low to very high. Let’s look at these ranges, together with the most frequent power usage, to get a better idea of how much electricity laptops use and cost to run.
How much electricity does a laptop use? (kWh & $ ranges)
Laptops consume anywhere from 0.0063 to 0.2310 kWh per day, with 0.0471 kWh being the most typical.
The cost of running a laptop ranges from $0.000945 to $0.03465 each day, based on $0.15 per kWh. The most frequent daily operating cost for laptops is $0.007065.
Laptops use between 0.192 kWh and 7.025 kWh of electricity per month, with 1.433 kWh being the most common monthly usage.
The monthly cost of running a laptop ranges from $0.029 to $1.05 ($0.215 is the average monthly electricity bill).
Laptops consume between 2.3 and 84.3 kWh of electricity each year, with 17.2 kWh being the most typical.
The cost of running a laptop on power each year ranges from $0.345 to $12.645, with $2.58 being the most prevalent figure.
In the United Kingdom, how much does it cost to keep a laptop plugged in?
In the United Kingdom, how much electricity does a laptop consume each hour? A laptop normally consumes around 50 watts of power, or roughly 0.05 kWh. This means that if a laptop is turned on for eight hours a day, it will cost 5p per day to keep it running (based on a 12.5 p/kWh average energy unit cost).
How much does it cost to keep a computer running in the UK 24 hours a day, 7 days a week?
The Consumer Council provides a helpful calculator that you may download from its website to help you with your calculations. It’s based on 2018 data, so if you’re looking for something more current, try this Sust-It calculator, which uses 2021 data.
I like the Consumer Council’s version since it’s an Excel spreadsheet (and who doesn’t like an Excel spreadsheet?) that shows you how much it costs to run your home appliances. Put your electricity unit rate (in kWh) in the red box, and it’ll figure you how much each of your appliances needs.
You can alter the power rating to reflect what you see on the label of your appliance or electrical equipment to make the spreadsheet calculations more accurate. Even if you use the conventional values, you’ll get a solid idea of how much each appliance costs.
Appliances that can be left on and forgotten are the ones to be wary about. A vacuum cleaner is quite costly to operate, costing around 26p per hour on average. You’re not going to leave it on all night and rack up a charge, though. And because your fridge freezer is always on, the only way to save money there is to use it more efficiently.
Here are some preliminary findings for the worst offenders when it comes to wasting energy. For the computations, I’m using a 17p tariff.
If you had a 52 LCD TV and left it on for 24 hours, the electricity bill would be around 71p. If you fall asleep in front of the TV on a regular basis, these naps could become costly at the end of the year.
The cost of running an 800 watt PC is more than 14p per hour. If used continuously for 24 hours, it would cost more than $3.26.
One of the most expensive appliances to run is a fan heater. It would cost $9.79 if you left it on for 24 hours.
Is it true that leaving a laptop plugged in consumes a lot of power?
When my cable box was on and recording a show, it drew 28 watts, and when it was off and not recording anything, it drew 26 watts. Even if I never watched television, I would use around 227 kilowatt-hours each year. According to World Bank estimates, that’s more than the average person uses in a whole year in certain developing nations, including Kenya and Cambodia.
Even when a laptop computer is completely charged, leaving it plugged in consumes a similar amount of energy.
A week’s worth of electricity is 4.5 kilowatt-hours, or around 235 kilowatt-hours per year. (Depending on the model and battery, your mileage may vary.) My PC is a few years old, and several readers have commented to remark that their MacBooks consume significantly less power.)
Is it true that charging a laptop uses a lot of electricity?
Because they are designed to run on a battery and be more power efficient, laptops, notebooks, and netbooks require less electricity than desktop computers. In addition, laptops rarely have a strong video card and instead rely on integrated graphics, which use less power. The power consumption of a laptop varies depending on the screen size; normally, power consumption ranges from 20 to 100 watts when using the battery. When charging the laptop battery, the power consumption increases by 10% to 20%; we estimate that a 14-15 inch laptop consumes 60 watts when plugged in.
What in the UK consumes the most electricity?
The top of our list is washing machines, dishwashers, and tumble dryers, which account up 14% of an average energy bill. Because of the energy required to heat the water they utilize, they are energy-hungry household equipment.
What in a house consumes the most electricity?
The breakdown of energy use in a typical home is depicted in today’s infographic from Connect4Climate.
It displays the average annual cost of various appliances as well as the appliances that consume the most energy over the course of the year.
Modern convenience comes at a cost, and keeping all those air conditioners, freezers, chargers, and water heaters running is the third-largest energy demand in the US.
Here are the things in your house that consume the most energy:
- Cooling and heating account for 47% of total energy consumption.
- Water heater consumes 14% of total energy.
- 13 percent of energy is used by the washer and dryer.
- Lighting accounts for 12% of total energy use.
- Refrigerator: 4% of total energy consumption
- Electric oven: 34% energy consumption
- TV, DVD, and cable box: 3% of total energy consumption
- Dishwasher: 2% of total energy consumption
- Computer: 1% of total energy consumption
One of the simplest ways to save energy and money is to eliminate waste. Turn off “vampire electronics,” or devices that continue to draw power even when switched off. DVRs, laptop computers, printers, DVD players, central heating furnaces, routers and modems, phones, gaming consoles, televisions, and microwaves are all examples.
A penny saved is a cent earned, and being more energy efficient is excellent for your wallet and the environment, as Warren Buffett would undoubtedly agree.
How much energy does a laptop consume on a daily basis?
While notebooks and netbooks require less power than high-end laptops, the power consumption of a laptop varies depending on the screen size and specifications; normally, power consumption ranges from 20 to 100 watts when a laptop is powered by the battery.
When a laptop is charging while in use, its power usage increases by 10% to 20%. The average power usage of 14 to 15-inch laptops is reported to be 60 watts per hour, so a laptop utilizing 60 watts for 6 hours a day while plugged in will cost $0.0648 each day (if you are in NewYork).
Which appliance consumes the most power?
Heating and air conditioning Your HVAC system consumes the most energy of any single appliance or system, accounting for 46 percent of the energy used in the average U.S. house.
