How to use script to change the Power Plan in Windows (PowerShell)

Introduction

This script sample can change the Power Plan in Windows.

Scenarios

Most organizations have a number of physical servers and you can make an impact by configuring the power plans on those systems. The appropriate power plan settings can reduce power consumption.  This script can easily change the multiple computers' power plan. 

Script

Step 1: Start the PowerShell Console with administrator. To run the script in the Windows PowerShell Console, type the command< Script Path> at the Windows PowerShell Console.

Step 2: If you want to know how to use this script. You can type the command Get-Help C:\Script\ChangePowerPlan.ps1 -Full to display the entire help file for this function, such as the syntax, parameters, or examples.

Example

Example 1: Type C:\Script\ChangePowerPlan.ps1 –PowerPlan "PowerSaver" in the Windows PowerShell Console. 

This command line shows how to change the power plan from Balanced to Power saver.

Here are some code snippets for your references.

If($PowerPlan)
{
    Switch($PowerPlan)
    {
        Balanced
        {
            Write-Verbose "Change the power plan from $CurrentPowerPlan to Balanced."
            $Result = ChangePowerPlan -ElementName "Balanced" -ComputerName $CN |`
            Select -ExpandProperty ReturnValue
            break
        }
        HighPerformance
        {
            Write-Ver "Change the power plan from $CurrentPowerPlan to Hgih performance."
            $Result = ChangePowerPlan -ElementName "High Performance" -ComputerName $CN |`
            Select -ExpandProperty ReturnValue
            break
        }
        PowerSaver
        {
            Write-Verbose "Change the power plan from $CurrentPowerPlan to Power Saver."
            $Result = ChangePowerPlan -ElementName "Power Saver" -ComputerName $CN |`
            Select -ExpandProperty ReturnValue
            break
        }
        Defalut
        {
            "The string parameter not found, please input the correct parameter value."
        }
    }
 
    If($Result)
    {
        Write-Host "Successfully change the power plan in Windows '$ComputerName'."
    }
    Else
    {
        Write-Host "Failed to chang the power plan in Windows '$ComputerName'."
    }
}
}

If($PowerPlan) 
{ 
    Switch($PowerPlan) 
    { 
        Balanced 
        { 
            Write-Verbose "Change the power plan from $CurrentPowerPlan to Balanced." 
            $Result = ChangePowerPlan -ElementName "Balanced" -ComputerName $CN |` 
            Select -ExpandProperty ReturnValue 
            break 
        } 
        HighPerformance 
        { 
            Write-Ver "Change the power plan from $CurrentPowerPlan to Hgih performance." 
            $Result = ChangePowerPlan -ElementName "High Performance" -ComputerName $CN |` 
            Select -ExpandProperty ReturnValue 
            break 
        } 
        PowerSaver 
        { 
            Write-Verbose "Change the power plan from $CurrentPowerPlan to Power Saver." 
            $Result = ChangePowerPlan -ElementName "Power Saver" -ComputerName $CN |` 
            Select -ExpandProperty ReturnValue 
            break 
        } 
        Defalut 
        { 
            "The string parameter not found, please input the correct parameter value." 
        } 
    } 
  
    If($Result) 
    { 
        Write-Host "Successfully change the power plan in Windows '$ComputerName'." 
    } 
    Else 
    { 
        Write-Host "Failed to chang the power plan in Windows '$ComputerName'." 
    } 
} 
}

Prerequisite

Windows PowerShell 2.0
Windows 7 or higher version

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