I like to keep my Asus ROG G750JZ(laptop) on all the time and I have already automated sleeping at 01:00 in the morning, auto wake-up on opening the lid. However since I am not using the laptop all the time and I keep the lid down to save energy, I would like to maximize the energy saving further by automatically switching the power plan from balanced to power saving (actually ASUS's Power4Gear Power Saving) on closing the lid.
Now I did a lot of research on this topic, unfortunately I could not find anything that does what I need. The closest I found was Power Plan Assistant(http://www.powerplan7.com/home.htm), but it doesn't offer the desired features. I found a few topics about powercfg command using powershell, but I could not understand them. I am open to suggestions and I am also willing to automate this by writing a script in powershell as well.
OS: Windows 8.1
Edit: I don't want it to go to sleep, as i would like to access it remotely few times a day.