Also hidden for me and "powercfg -attributes 2a737441-1930-4402-8d77-b2bebba308a3 48e6b7a6-50f5-4782-a5d4-53bb8f07e226 -ATTRIB_HIDE" won't help.
Anyway, changing the DWORD-Value "Attributes" under "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\2a737441-1930-4402-8d77-b2bebba308a3\48e6b7a6-50f5-4782-a5d4-53bb8f07e226" from 0 to 2 is going to make it available after a restart.