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Line Up Your Windows Power and Sleep Settings with PowerShell and WMI
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Joined: 7/1/2018(UTC) Posts: 64  Thanks: 1 times
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LINE UP YOUR WINDOWS POWER and SLEEP SETTINGS with POWERSHELL and WMI Windows Power Settings have always been a little bit confusing. I have found many articles on how to use PowerCfg.exe which returns the setting values (on a single computer) in ugly hex. Unless I'm totally missing something, the same information is available in WMI which can easily be accessed remotely by using PowerShell. Throw in a couple custom objects, slice, dice, and tag the data, then it really starts to make sense. In a mission to baseline the settings for a new client, I came up with this. 3 relatively simple WMI queries. 
Create an Object to store the results: Code:
$PowerPlanObj = [PSCustomObject]@{
InstanceId = $null
ElementName = $null
Settings = New-Object System.Collections.Generic.List[PSObject]
}
WMI Query #1 - Get the Active Power Plan (nothing at all new here). Code:
try {
# Get the Active Power Plan
$ActivePlan = gwmi -Namespace "root\cimv2\power" -Query "select ElementName,InstanceID from Win32_Powerplan where IsActive=True" -ErrorAction Stop
write-host ("Active Plan: " + $ActivePlan.InstanceId + " - " + $ActivePlan.ElementName)
# Set the Active Plan info in the object
$PowerPlanObj.InstanceId = $ActivePlan.InstanceId
$PowerPlanObj.ElementName = $ActivePlan.ElementName
} catch {
write-host "Error Querying root\cimv2\power Win32_Powerplan - make sure you have an elevated window"
write-host $_.ToString()
exit
}
WMI Query #2 - Get the readable names for the settings. Turn the results into a hashtable. Code:
# Get the readable names for the settings
try {
$SettingNames = gwmi -Namespace "root\cimv2\power" -Query "select ElementName,InstanceID from Win32_PowerSetting" -ErrorAction Stop
} catch {
write-host "Error Querying root\cimv2\power Win32_PowerSetting"
write-host $_.ToString()
exit
}
# Loop through the setting names and add them to a hashtable by setting id (use this to get the friendly name)
$SettingHash = @{}
foreach ($i in $SettingNames) {
# Turn this Microsoft:PowerSetting\{29f6c1db-86da-48c5-9fdb-f2b67b1f44da}
# into {29f6c1db-86da-48c5-9fdb-f2b67b1f44da} for the key
$SettingId = $i.InstanceId.Split("\")[-1]
# Add it to the hash
$SettingHash.Add($SettingId,$i)
# Example: $i.ElementName = Sleep after
}
WMI Query #3 - Get the settings for the active plan. Code:
# Change Microsoft:PowerPlan\{381b4222-f694-41f0-9685-ff5bb260df2e}
# to 381b4222-f694-41f0-9685-ff5bb260df2e for the query
$ActivePlanId = $PowerPlanObj.InstanceId.Split("\")[-1].Replace("{","").Replace("}","")
try {
$Settings = gwmi -Namespace "root\cimv2\power" -Query "select InstanceId,SettingIndexValue from Win32_PowerSettingDataIndex Where InstanceId Like '%$ActivePlanId%'" -ErrorAction Stop
} catch {
write-host "Error Querying root\cimv2\power Win32_PowerSettingDataIndex"
write-host $_.ToString()
exit
}
Build the Object for the settings with the relevant info, tag them, and output.
Code:
foreach ($i in $Settings) {
$SettingObj = [PSCustomObject]@{
PlanId = $PowerPlanObj.InstanceId
PlanName = $PowerPlanObj.ElementName
SettingId = $i.InstanceId.Split("\")[-1]
SettingValue = $i.SettingIndexValue
SettingType = $null
SettingName = $SettingHash.($i.InstanceId.Split("\")[-1]).ElementName
}
# Tag the settings AC or DC
if ($i.InstanceId -match "AC") {
$SettingObj.SettingType = "AC"
}
if ($i.InstanceId -match "DC") {
$SettingObj.SettingType = "DC"
}
# Add the setting to the list
$PowerPlanObj.Settings.Add($SettingObj)
}
# Output the settings
$PowerPlanObj.Settings | Out-GridView
Super easy to find settings by name from the active plan that you care about: 
Feel free to comment and follow me on Twitter Thanks - Dustin Edited by user Thursday, October 10, 2019 8:06:33 AM(UTC)
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 1 user thanked Dustin Higgins for this useful post.
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Line Up Your Windows Power and Sleep Settings with PowerShell and WMI
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