###### How much does it cost to run a lamp?

May 30, 2024###### How much does it cost to run a lawn mower?

May 30, 2024Getting straight to the point, it costs approximately **£0.01** to run **a laptop** for one hour. This depends on how much you pay for your energy and the wattage of your laptop however, so this is just an estimate.

To get a more accurate cost of how much it costs to run your laptop for different lengths of time, you can use our simple calculator below**.**

## Energy usage calculator for your laptop

To find how much electricity your laptop uses, you will need to know its power consumption and the unit price you pay for your electricity.

We have prefilled the power consumption with the average for a laptop and have used the current unit price based on the **June 2024** price cap. This will give you a quick idea of the cost, but you should use your details for more accurate figures.

You then need to enter your hourly usage time daily, and we’ll show you the cost per day, month, and year to run your laptop.

## How to use our calculator?

Here are some quick steps on how to use our calculator:

#### Identify the power usage of your laptop

First, find out your laptop’s power usage. The appliance label or user manual usually indicates this in watts (W). If you can’t find it, you can look up the** average wattage for a laptop, which is 50.**

#### Work out how often you use your laptop

Next, estimate how often you use thelaptop. Record the number of hours per day or the total time per week you use it. This will help determine the overall energy consumption.

#### How much your electricity costs

Check your electricity bill or contact your energy provider for the cost per kilowatt-hour (kWh) for your electricity. You’ll use this rate to calculate the cost of running your laptop.

#### We’ll tell you how much it costs to run your appliance

Enter the power usage, usage duration, and electricity cost into the calculator. The calculator will process this information and provide you with an estimate of how much it costs to run your laptop. You can see these costs per day, per month and per year.

## How to calculate the energy cost of your laptop manually

To manually work out the cost of your laptop (or any appliance), you need to do the following:

**Convert the power rating to kilowatts (kW)**: Power (kW) = Wattage (W) / 1000**Calculate the energy consumed (in kWh)**: Energy (kWh) = Power (kW) × Time (hours)**Calculate the cost**: Cost (£)= Energy (kWh) × Cost per kWh (£/kWh)

You first need to divide the wattage of the appliance by 1,000. This converts the wattage to Kilowatts.

Next, calculate the energy consumed in Kilowatt hours (kWh) by multiplying the Kilowatts by the number of hours of usage.

Finally, multiply the kWh by the unit price of electricity.

**An example for a laptop would be: 0.05 kW x 5 hours x 0.24p = £0.06. **

This would be the cost to run the laptop for five hours when the unit price of electricity is 24p.

## How many watts does a laptop use?

Based on data from sources like Energy Saving Trust and National Energy Action, we’ve found that the wattage for the average laptop is: **50 watts**.

## Factors that impact the running costs of a laptop

The energy running costs of using a laptop can be influenced by several factors.

The age and model of the laptop play a significant role. Newer models are often more energy-efficient than older ones.

How you use the laptop also matters. Running multiple applications at once can increase energy consumption.

The brightness of the screen is another factor. Lowering the brightness can help save energy.

Charging habits can impact costs as well. Keeping the laptop plugged in all the time can use more electricity.

Finally, the settings and power-saving modes available on the laptop can make a difference. Adjusting these settings can help reduce energy usage.

## How to save money on running your laptop

When using a laptop, you can save money on energy usage by adjusting the power settings to optimise battery life and reduce power consumption.

Lowering the screen brightness can also make a significant difference, as the display is one of the most energy-intensive components of a laptop.

Additionally, unplugging the laptop once it is fully charged prevents unnecessary energy drain and prolongs the battery’s lifespan.

Closing unused applications and tabs helps the laptop run more efficiently, reducing the amount of energy it needs to operate.

Finally, using a power strip with an on/off switch allows you to easily cut off power to the laptop and other devices when they are not in use, further saving on energy costs.

## Average runnings costs by different time periods

Time | Usage (kWh) | Cost (£) |
---|---|---|

Per Day (4 hours per day) | 0.2 | £0.05 |

Per Month (30 days per month) | 6 | £1 |

Per Year (365 days per year) | 73 | £18 |

## Frequently Asked Questions

Below, we have answered a few questions related to laptop energy usage.

### Does a laptop use a lot of electricity?

A laptop does not use a lot of electricity.

It is designed to be energy-efficient.

Most laptops use between 20 to 50 watts of power.

This is much less than a desktop computer.

### Are laptops energy efficient?

A laptop is generally energy efficient compared to other electronic devices.

It uses less power than a desktop computer, making it a cost-effective choice for daily use.

Additionally, laptops often come with energy-saving features like sleep mode and adjustable brightness settings.

These features help reduce electricity consumption, further enhancing their efficiency.

### How much energy does the average laptop use?

Again, based on available data from sources like Energy Saving Trust and National Energy Action, we’ve found that the average laptop uses approximately 0.05 kWh energy when switched on for one hour.

### How much does it cost to run a laptop for 1 hour?

Based on the average wattage of a laptop being 50, we can work out that the average laptop costs **£0.01 to run for one hour**.

We have used the current electric unit price 24p from the June 2024 to work this out.

### How much does it cost to run a laptop per day?

Using the current average electric unit price of 24p from the June 2024 price cap and the average wattage of a laptop’s being 50, we can work out that the average laptop costs **£0.05 to run for one day**.

We’ve assumed it will be used for 4 hours per day.

### How much does it cost to run a laptop per year?

The average wattage of a laptop is 50 and the current average unit price of electricity based on the June 2024 is 24p. Using this, we can work out that the average laptop costs **£18 to run per year**.

We’ve assumed it will be used for 365 days per year.