Track PC Power Consumption With Microsoft Joulemeter

Martin Brinkmann
May 31, 2010
Software, Windows, Windows software

Tracking a PC's or Laptop's power consumption can be helpful in several ways. It can for instance be used to analyse power usage to reduce the energy bill or find ways to increase a laptop's battery life by reducing the overall power usage.

Microsoft Joulemeter is an experimental program for Windows that can track the PC power consumption. It is compatible with desktop and mobile computers.

The application places an icon in the Windows system tray on startup. A click on that icon displays the main interface where the power consumption and statistics are displayed and constantly updated.

The power consumption is divided into base, cpu, disk and monitor which are added to get a total power consumption. The application currently is not measuring the gpu's power consumption which - on modern computer systems - uses lots of power.

It also has to be noted that the values are estimations if the application is installed on a desktop computer. The connection of a WattsUp power meter and the calibration module of Joulmeter is said to return accurate statistics.

Laptop users do not need a WattsUp meter. They simply have to pull the plug if the laptop is at least 75% charged to get more accurate power date.

Microsoft Joulmeter is an interesting program for Windows that can track a computer's power consumption. The software can be downloaded from Microsoft Research.


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  1. Martin said on March 12, 2023 at 3:05 pm

    An even quicker way to open Task Manager is by pressing Ctrl+Shift+Esc.

  2. archie bald said on March 12, 2023 at 4:32 pm

    Win+Pause used to be the goto shortcut for me since… W95… Ms recently hijacked it and you now get Sysinfo. Device manager is still accessible this way: the second to last link at the bottom.

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