Hidden Windows 7 Treasure – PowerCFG

Powercfg -Energy

The interesting thing about Microsoft sometimes is that they do some really interesting and innovative functionality with a new operating system.  However they don’t always document what these advances are.  Take PowerCFG for example.  Here is a great tool, to help manage your default and custom Power Plans on a Windows 7 machine.  This tool has been around since Vista and helps to be able to configure, export, import and even delete a Power Plan.

What is new and different in Windows 7 as opposed to Windows Vista with PowerCFG is that Microsoft added a new switch.  The “-Energy” switch allows an administrator to take an in-depth look at what are the energy drainer on a desktop or more importantly on a laptop. 

 If we take a look at the command line options for -Energy, you will see the syntax and more specifically what it is going to do.

Powercfg -Energy

Powercfg -Energy

It is suggested that the computer is running idle when this feature is initiated.  You can define how long the trace as well as if the report is to be made into .XML.  If no duration is set then the default is 60 seconds.  Below is a batch file that was created to run this command.

 Batch file Powercfg -Energy

Batch file Powercfg -Energy

Once the application has run its course, an HTML report is produced showing the processes that are energy hungry.  The report is divided into Error, Warnings, and Information.  This will also include any USB devices that do not support “Suspend”, thus causing issues with power consumption.

This is a great tool that can help the administrator help to configure and maintain the Power Plans for a PC.  Enjoy!!


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