Find desktop and notebook computers
Purchase computers with the Trust’s Energy Saving Label and save money over the lifetime of the computer.
Lists
Notebook computers (only in Danish)
Desktop computers (only in Danish)
Lifetime costs – what are they?
When you purchase a computer, the cost of running it is reflected in your electricity bill over the period in which have the computer. We call this the computer’s lifetime costs, i.e. the total cost of using it over the computer’s life, which we have set at 4 years.
If you add both the purchase price and lifetime costs together, you can find out what the product really costs. See the lifetime costs displayed in the list of recommended computers.
Lifetime costs depend on:
- On, sleep and standby. The time the computer spends in each of these different modes.
- Lifetime. How many years you expect to have the computer.
- Electricity price. The Trust bases its calculations on a standard price, but you can also input your own figures.
Sample calculations for the replacement of your computer
The calculator provides a precise indication of how much you can save when you replace a computer. Here are 2 sample calculations.
Switch from desktop computer with CRT monitor to energy efficient notebook
| On | Sleep | Standby | Consumption | |
| Current equipment: | ||||
| Non energy efficient desktop computer | 60 watts | 6 watts | 4 watts | 93 kWh/year |
| Non energy efficient 17″ CRT monitor | 90 watts | 8 watts | 4 watts | 125 kWh/year |
| Total consumption: | 218 kWh/year or EUR 348.80 /year | |||
| New equipment: | ||||
| Energy efficient notebook computer | 16 watts | 0,5 watts | 0,5 watts | 20 kWh/year or EUR 32.00/year |
| Annual savings: | |
| Savings on electricity bill: | 198 kWh/year or EUR 316.80 /year |
| Total saving: | 91 % |
| Savings in lifetime costs: | |
| Costs over five years based on continuing to run the existing equipment: | EUR 250.70 |
| Costs over five years based on an energy efficient notebook | EUR 23 |
| Total saving | EUR 227.70 |
Switch from high power consumption desktop computer with CRT monitor to energy efficient desktop
| On | Sleep | Standby | Consumption | |
| Current equipment: | ||||
| Non energy efficient high consumption desktop | 120 watts | 6 watts | 4 watts | 155 kWh/year or EUR 248.00 /year |
| New equipment: | ||||
| Energy efficient desktop computer | 30 watts | 2,5 watts | 0,5 watts | 35 kWh/year or EUR 56.00 /year |
| Annual savings: | |
| Savings on electricity bill: | 120 kWh/year or EUR 192.00 /year |
| Total saving | 77 % |
| Savings in lifetime costs: | |
| Costs over five years based on continuing to run the existing equipment: | EUR 178.25 |
|
Costs over five years based on an energy efficient desktop computer: |
EUR 40.25 |
| Total saving: | EUR 138 |
| Assumptions factored into the calculations above: | |
| Time on | 1,032 hours |
| Time sleep | 234 hours |
| Standby time | 7,494 hours |
| Computer lifetime | 5 year |
| Electricity price | EUR 1.60 /kWh |
Page last updated 07.04.2009