Have a Windows 7 laptop? Use this hidden Windows tool to generate a Power Report

By | October 22, 2011
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If you have a Windows 7 laptop and you want to extend its battery life, Windows 7 includes a hidden built-in tool that will analyze your laptop’s energy usage and give recommendations as to how to improve power consumption and extend your laptop’s battery life.

Here’s how to do it. 1. Run a command prompt as an administrator. To do this, type cmd in the Start Menu search box, and when the cmd icon appears, right-click it and choose “Run as administrator.”

2. At the command line, type in the following:

**You can change the output directory to anything you want – as long as the directory already exists**

3. Windows 7 will take a few moments to examine laptop’s power usage. After if finishes analyzing, it will generate a report in HTML format (Web page) in the folder you selected. Just double-click the file, and the report will open in your browser.

You can follow the recommendations in the report to improve your laptop’s power performance.

7 thoughts on “Have a Windows 7 laptop? Use this hidden Windows tool to generate a Power Report

  1. Adelin

    You mention:
    powercfg -energy -output C:Your User Name DocumentsEnergy_Report.html
    It should be:
    powercfg -energy -output C:\Your User Name\DocumentsEnergy_Report.html

    The “\” backslash-es” are missing !!!

    powercfg -energy -output C:\Report\Energy_Report.html
    The MAP “Report” has to be created beforehand !!

    Greetings, Adelin

    1. infoave Post author

      That’s what it says – the back slashes are there.

      powercfg -energy -output C:\Your User Name\ Documents\Energy_Report.html

      It should not be DocumentsEnergy_Report.html unless you want Documents as part of the file name.

  2. Muriel

    I don’t see any back slashes either, TC.
    Must be the Halloween goblins are out early.

  3. don

    The report seems to have been created, but I can’t locate it. What am I doing wrong?

  4. Dounantil

    I also see not back slashes, TC
    Your computer is different than ours?:)


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