How to trigger Windows 10's battery saver when lid's closed or after a certain time

I was wondering if it would be possible to turn on the Windows 10's battery saver (the one you can enable when clicking the battery icon on the taskbar) when the lid is closed (also locking the PC) or after, say, 2 minutes of inactivity pass. I did some research and found no answer to my question. I was thinking of the task scheduler, AutoHotkey or registry hacking, but, again, there's no info on how to trigger these events. Perhaps you have some idea? Thanks in advance!

Question by Vizal on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.