Purchasing requirements for monitors
Because there is such a large variation in power consumption for monitors, you can halve the consumption by choosing energy efficiently when replacing equipment. Savings of up to EUR 135 can be made over the life of the equipment of each unit.
Always only purchase flat screen monitors and consider whether it isn’t time to replace the old CRT monitor with a flat screen model. You also get more space on the desk, a more subdued screen image, and a better indoor environment because the monitor gives off less heat.
Purchasing requirement – Monitors
Requirements conform to Energy Star specifications effective from 1 January 2006.
|Equipment type||On watt||Sleep (1) watt||Standby (2) watt|
|Resolution < 1 megapixel||23||2||1|
|Resolution > 1 megapixel||28 x resolution (3)||2||1|
The requirements apply to standard types of monitors connected to mains electricity. Power consumption and times are the maximum permitted for energy efficient equipment.
Notes and additional definitions – Monitors
(1) Computer power management function puts monitor to sleep.
(2) Monitor is in Standby (off) mode when turned off using the on-off switch.
(3) O is horizontal x vertical resolution in megapixels. Example: 1280 x 1024 resolution equals 1.31072 megapixels. Maximum power consumption is 36.7 W (1.31072 x 28 W).
ENERGY STAR Program Requirements for Computer Monitors: Version 4.1 provides a complete description of the scope and definitions.
Changes in relation to the 2007 specifications
There are no changes in relation to the 2007 specifications.
Good advice on purchasing and operating equipment
- Only purchase flat screen monitors. Typically, these consume less than half as much current compared with CRT monitors.
- Choose monitors with the lowest power consumption costs over their lifetime. The most efficient cost less than half as much to run as the most inefficient. Check lifetime running costs on the product list.
- Monitors with external power supplies should comply with the requirements for power supplies.
- Use an AutoPowerOff plug bank that automatically switches off any connected equipment (e.g. monitor, printer, etc.) when the computer is switched off or after a period of inactivity.
- Make sure that monitors are programmed to switch to sleep mode after 5 to 30 minutes of inactivity using the computer’s ‘Control Panel’ power management options.
- Make users aware that they need to remember to switch off monitors before they leave the office, and when they go to lunch or meetings. An AutoPowerOff plug bank can automatically switch off a monitor.
- Read the Trust’s 2008 Interior Layout Guidelines (in Danish) with good advice on organising and equipping office workspaces.
Read more about AutoPowerOff plug banks, and where to buy them.
See the electricity consumption on the energy declaration, which suppliers in the Trust’s voluntary agreements display in their advertisements, technical data, etc.
See product lists of monitors from suppliers who have signed a voluntary agreement with the Trust stating that they have fulfilled the requirements for energy efficient purchasing.