Just read this useful command line utility built into Windows 7 for viewing a report about how your laptop is using energy.
Swiss IT Professional and TechNet Blog : Windows 7 – Power Management Reports
“Wondering why your battery life of your laptop is not as good as the manufacturers claim? powercfg -ENERGY You need to run this command from the command prompt with administrator privileges (Run as Administrator). This command will perform a 60 second analysis of the computer’s energy consumption and provide you with a report: (by default in the system32 folder): C:\Windows\system32\energy-report.html It lists the devices and drivers that hamper Sleep, or hinder that the full power saving features of your machine can not be utilized. It also lists if your hardware is capable of S1, S2, S3 or S4 sleep modes”
“Wondering why your battery life of your laptop is not as good as the manufacturers claim?
powercfg -ENERGY
You need to run this command from the command prompt with administrator privileges (Run as Administrator). This command will perform a 60 second analysis of the computer’s energy consumption and provide you with a report: (by default in the system32 folder): C:\Windows\system32\energy-report.html
It lists the devices and drivers that hamper Sleep, or hinder that the full power saving features of your machine can not be utilized.
It also lists if your hardware is capable of S1, S2, S3 or S4 sleep modes”
Looks like I have some things that I can look at to improve my battery life.
Update 28/05/2010 - some additional info and screenshots at http://blogs.techrepublic.com.com/window-on-windows/
Rob
PingBack from http://microsoft-sharepoint.simplynetdev.com/powercfg-%e2%80%93energy-windows-7-%e2%80%93-power-management-reports/
Any idea why I'm getting this error?
C:\>powercfg -ENERGY
Invalid Parameters -- try "/?" for help
There is no -ENERGY option whenI try /? for help. I am running a command prompt as Administrator on a Thinkpad with Vista SP1.
Hi Ian - I believe it is Windows 7 only
Got that error as well on Win 7.
I copy pasted command form this page.
Then manualy entered in small caps,thenit worked.
Great article: will definitely visit again.
Hi Varum - I tried in my version build 7100 English
Where you running a non english installation by any chance?
Feel free to email me via the links at the top of the page and I can see if I can help
To use this built-in command:
1. Click on "Start button -> All Programs -> Accessories". Right-click on "Command Prompt" and select "Run As Administrator". If you are prompted to enter password, enter the password and continue. You can also open Command Prompt in Administrator mode by typing "cmd" in Startmenu Search box and press "Ctrl+Shift+Enter".
I can't open the energy-report.html file. Firefox says "file not found", and IE can't open it either. I can navigate to the file in windows explorer, but cannot open the file with a web browser. Any ideas?
Nevermind, all I had to do was move the file out of the system32 directory and then I could open it.
I received the message tath it was enable to perform...I run it as administrator.
Thanks Noah.
I could not read it either.
Just move it to the desktop and open.
I can not open the file. Have tried to copy/move/rename and it won't let me do anything. Any ideas?
how do i open the html report?
Hi JHC/Open
can yu send me the fil and then i can check it is ok
rob
when i put this into my command prompt it tells me the energy command must be done by an administrator and must be executed by a higher command prompt. any idea why? a am logged in as an administrator. am i doing something wrong?