# How much power does a laser machine use?

## How much power will a Trotec laser use?

This is a very common question that we are asked. Many customers believe that their laser may use a lot of power, and so wish to estimate how much a laser will affect their electricity bill. The good news is that a laser usually uses less power than common appliances such as a fan heater or an air conditioner.

The power consumption of lasers varies and depends on a few factors. The power usage will depend on the laser power (watts) and number of operating hours per time period. Lasers will higher wattage and longer run times will use proportionally more power. Please see the example below detailing the power consumption in kilowatt hours based on the specific example.

## What determines how much power a laser uses?

The energy consumption of a laser depends on a number of factors.

### 1. Actual working time

This is the amount of time the laser is actively working and processing the job, engraving, cutting and marking In reality between 20% to 50% of the working time will be spent on on manual tasks (loading and unloading of the laser). During breaks and rest periods, Trotec lasers can be placed in standby mode, so they only require minimal power. This can be best described as energy saving mode.

### 2.  Laser power used for processing

The maximum laser power of the machine will directly affect the amount of electricity that is used, i.e. a 20-watt laser uses significantly less than a 100-watt laser. Keep in mind that not all laser jobs will use the all of the available laser power, they will only use the watts selected.

### 3. Extraction systems

Using an extraction system and/or a cooling system (required for some lasers) also affects power usage. Trotec’s energy-saving function automates the operation of both the laser and the exhaust, so that neither is using power unnecessarily.

## A specific example for the power consumption of a laser

One laser corresponds to the consumption of 2 office PCs

You can use the following example to help estimate potential energy usage:

• A Speedy 400 laser machine with 80 watts laser power
• An average effective working time of 2 hours a day
• Of which 50% of the time with maximum laser power (80 watts) and 50% of the time with half laser power (40 watts)

The amount of electricity used in the example above is approx. 50 kWh per month, about the same as 2 office PCs. We bet this is a surprising result, but yet another example of Trotecs innovations and commitment to environmental sustainability. You'll probably find your laser uses less power than you expect.