What does optimizing Energy mean?

AlgoSpace checks if you forget to turn off the light.

<<play no motion light on prompt>>

If you forget to turn off AirCon
<<play no motion AirCon on prompt>>

Also if you forget to close the door when AirCon is on.

<<play AirCon on and door open prompt>>

And turn off all the standby devices during your sleep
<<play Energy Conservation prompt>>