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”
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/
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
Rob
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
Rob
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?
Hi Aaron – even if you are logged on as an admin you still need to run this command from the command prompt with administrator privileges (Run as Administrator).
I am hahing energy efficiency problems, I folow the instructions on how to check on them using the command promp and I found 8 errors, and 9 warnings but the problem now is that I don’t know how to solv them. How do I identify the spesific errors and warnings and how do I macke the necesary adjustment to fix them?
Any help would be greatly appreciated.
Cioran – can you post the info anywhere
rodmar – the command promp part I’m able to do, the problem that I am facing is that when I try to view the info. at C:Windowssystem32energy-report.html the info. does not show in the in the brouser so I’m not able to effectively diagnose and solve the problems in my pc.Is there other way to view the energy managment report?
ok couple of things
1. change file extension to htm (in case you have no association with .html)
2. associate .html extension with your browser
3. try open file up from Word
failing that email it to me at robmar@microsoft.com
rob
I too could not open C:Windowssystem32energy-report.html
with neither Firefox, Internet Explorer nor Google Chrome. Copied the report to My Documents & it then opened fine.
Start > search: energy-report.html > right click > Open File Location > copy to your folder, Open the copy in your browser.
Could you tell me how this user mode application can get USB port state about suspend
Windows 7 Pro,, I too was getting Invalid Parameters when running this command…
Solution run it with /switch…
ie powercfg /ENERGY
THis worked for me
Hi. I am having similar problems to what every else on this thread is complaining about. Watching video or listening to music (but no mouse movement) will shut the HDD down after 20 minutes, despite changing power settings.
I have the energy-report file ready to download, if you can help.
Hello Every One , how are you.can any one give me favor how to correct the Error on my laptop battery problem , my laptop battery is 2 year old.
kindly tell me you can also contact me at
aamir.sky@gmail.com
@window 7 R2 ——->
C:Windowssystem32>powercfg -ENERGY
Enabling tracing for 60 seconds…
Observing system behavior…
Analyzing trace data…
Analysis complete.
Energy efficiency problems were found.
27 Errors
24 Warnings
12 Informational
————-
Whe usb device is in the suspend state, what method does "powercfg -energy" use to get the suspend information? This issue is based on the device's vendor driver do nothing in this case.
In Win 7 platform, i can use "powercfg -energy" to get use device's power state
When the usb device is in the suspend state. The device vendor's driver do noting in this case, but "powercfg -energy" can inderstand
the device is suspend . It is amazing!!! anyone can tell me how this command do that ????
In Win 7 platform, i can use "powercfg -energy" to get use device's power state
When the usb device is in the suspend state. The device vendor's driver do noting in this case, but "powercfg -energy" can inderstand
the device is suspend . It is amazing!!! anyone can tell me how this command do that ????
Got problem with sleep mode Windows 7. Anytime my computer is in sleep mode and it tries to wake up then the fout begins. My monitor turns into blue screen. Is there any way to solve this problem???
Beetje – can you confirm you have all your updates up to date/ also what antivirus sw are you running
rob
i cant open my energy report………..can anyone help????/
Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:Windowssystem32>powercfg -ENERGY
Enabling tracing for 60 seconds…
Observing system behavior…
Analyzing trace data…
Analysis complete.
Energy efficiency problems were found.
6 Errors
6 Warnings
17 Informational
See C:Windowssystem32energy-report.html for more details.
C:Windowssystem32>
Mine says 4 Errors 16 Warnings and 14 Informational; how do I fix it?
hi…on my power eff.diagnostic report the following warning appears:
"Battery:Last Full Charge (%)
The battery stored less than 50% of the Designed Capacity the last time the battery was fully charged.
Battery ID 0000000341G71C000AH210
Design Capacity 47520
Last Full Charge 19893
Last Full Charge (%) 41
i'd appreciate it much if you can help me address this so i can maximize my new battery on my toshiba tecra m11…
thanks a lot!
Hi,
When my laptop goes to turn off display mode it will not come out of this mode. Usually I can enter my password and my screen comes back on, but recently the screen stays only on the standard windows background without giving me the possibility to enter a password so that i can continu my work.
I am using Win7 and have updated all windows updates. Any idea where I should look to tweak?
Thanks in advance