Home > PowerShell > Function: Set-PowerPlan – Adjust The Power Plan of a Server

Function: Set-PowerPlan – Adjust The Power Plan of a Server

Description

Just something I worked up based on a suggestion by someone. This will change the power plan of the machine it’s run on. This can be critical if you want to ensure that the machine doesn’t go to sleep while an extended process is running. Simply run the function with the desired power plan and the change is immediate. For example:

Set-PowerPlan "High Performance"

The three power plans you can choose from are “high performance”, “balanced”, and Power Saver. That’s all there is to it.

function Set-PowerPlan {
	[CmdletBinding(SupportsShouldProcess = $True)]
	param (
		[ValidateSet("High performance", "Balanced", "Power saver")]
		[ValidateNotNullOrEmpty()]
		[string] $PreferredPlan = "High Performance"
	)
	 
	Write-Verbose "Setting power plan to `"$PreferredPlan`""
	$guid = (Get-WmiObject -Class Win32_PowerPlan -Namespace root\cimv2\power -Filter "ElementName='$PreferredPlan'").InstanceID.ToString()
	$regex = [regex]"{(.*?)}$"
	$plan = $regex.Match($guid).groups[1].value 
	
	powercfg -S $plan
	$Output = "Power plan set to "
	$Output += "`"" + ((Get-WmiObject -Class Win32_PowerPlan -Namespace root\cimv2\power -Filter "IsActive='$True'").ElementName) + "`""
	Write-Verbose $Output
}

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Categories: PowerShell Tags: ,
  1. September 11th, 2014 at 09:47 | #1

    on older machines that don’t have this WMI class you can write a script that invokes powercfg.exe and the GUID of the powerplan you want to use

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