Windows 7 Power Efficiency

Did you know that Windows 7 includes a hidden diagnostic utility that you can use to generate a power efficiency report for your computer? No, well I’m not surprised. Its not exactly a widely publicised feature.

When you run the program, it monitors your computer for 60 seconds to identify areas where power is being wasted. After it finishes, a report is generated that will show any found errors, warnings or other information related to your computer’s power efficiency.

So how do you run a power efficiency report? First of all, close down any other programs. For best results, you really want to start this utility whilst nothing else is running on your computer.

  1. Click Start and type cmd.
  2. Hover your mouse over the cmd entry and right click.
  3. Select ‘run as administrator’ from the menu
  4. Type powercfg /energy and press Enter.

After it finishes, the power efficiency report will be saved to c:windowssystem32. The report will look something like the one below. It will contain information about which applications, processes or drivers are having an impact on power management.

Give it a try. You never know, you might be able to improve your laptops battery performance without the minimum of effort.