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).
In 8 hours, how much electricity does a laptop consume?
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.
How much does it cost to keep a computer on 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.
Do laptops consume a lot of power?
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.
How much electricity does a laptop consume per hour?
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 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 electricity does a laptop consume?
How much electricity does it take to power your iPhone or Android for a year (to the nearest 10 kilowatt-hour)? 1 kilowatt-hour? 10 kilowatt-hours? Or 100 kilowatt-hours? 1 kWh is the answer.
This is the amount of power required to run ten 100-watt incandescent lightbulbs for one hour. 1 kwh costs roughly 12 cents, which is hardly worth being embarrassed about.
Your iPhone battery has a capacity of 1,440 mAh, which translates to 5.45 watt hours. If you fully charged and recharged your phone every day, you’d have to feed it around 2,000 watt hours, or 2kWh, over the course of a year. At a cost of 12 cents each day, your phone consumes nearly a quarter of a year’s worth of electricity. According to the Electric Power Research Institute, keeping your iPad nourished costs just $1.36 each year. With its much larger screen, the average laptop uses roughly 72 kWh each year, costing around $8.
That’s right, for less than the cost of three gallons of gasoline, you can power your phone, iPad, and laptop for a year.
So don’t be concerned about plugging in that charger and wasting some power. Don’t be concerned about your electronics’ long-term carbon footprint. Ignore the naysayers who claim that when you total up all the computing power in the cloud, your phone uses the same amount of electricity as two refrigerators. This has been completely debunked.
How much does it cost to run an oven for one hour in the United Kingdom?
What is the cost of using an electric oven? According to npower, an electric oven costs around 14p per hour to run.
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 is the cost of keeping a laptop charged?
Depending on the size of the laptop’s battery and your electricity usage rate, fully charging a laptop will cost between 1 and 3 cents in electricity usage. Small laptops, such as notebooks, typically have a battery capacity of 30-50Wh and charge about 1 to 1.5 cents. Larger laptops with more processing power or HD displays, on the other hand, sometimes have batteries that are above 70Wh and cost upwards of 2 cents to fully charge.
If we assume a power usage rate of 28.7c/kWh, the battery capacity and accompanying charging costs of common laptops are listed in the table below.
The cost of charging your laptop
Assumes that the battery is charged from 0% to 100% once a day, 365 days a year. Keep in mind that a larger battery does not always imply that it will last longer. The Asus ROG laptop, for example, has twice the battery capacity of the Toshiba Chromebook 2. The Asus ROG, on the other hand, is a gaming laptop that uses a lot more power than a regular laptop. This implies that depending on how the Asus ROG is used, it may or may not have a longer battery life. Other factors that influence laptop battery life include:
- Stress The more energy your laptop consumes, the harder it has to work. Streaming TV shows and playing video games are notorious for depleting a laptop’s battery charge.
- Condition of the battery
- Lithium batteries deteriorate with time, which means their maximum storage capacity decreases as they get older.
- TemperatureExtreme temperatures can hasten the loss of charge and deterioration of capacity. Laptops should not be left in hot automobiles or under direct sunlight.
- Components of aging
- Upgraded components may lessen your laptop’s overall need for electricity, depending on the model of laptop and your computer knowledge. Adding additional RAM or upgrading to an SSD makes it much easier for your laptop to access stored data, resulting in lower power consumption.
Remember that the more often your laptop battery needs to be charged, the more money you’ll spend on power. If your laptop battery only lasts a few hours and needs to be recharged frequently throughout the day, you’ll wind up spending a lot more money on energy than the above chart implies.