HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\User\PowerSchemes User\PowerSchemes subkey of Power has an entry called "ActivePowerScheme" which contains the ID of the current power plan By default: Balanced (recommended): Code: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\User\PowerSchemes] "ActivePowerScheme"="381b4222-f694-41f0-9685-ff5bb260df2e" CMD: Code: Reg.exe add "HKLM\SYSTEM\CurrentControlSet\Control\Power\User\PowerSchemes" /v "ActivePowerScheme" /t REG_SZ /d "381b4222-f694-41f0-9685-ff5bb260df2e" /f