NO, it does not "save" anything. Particularly energy.
If you published ten GB of data as all caps ASCII text, THEN you MIGHT
save a few milliwatts.
Since we merely write a few lines, the amount of energy used is quite
large, comparatively, and quite wasteful in all cases where one has only
written a few lines.
The less data that a computer actually processes per unit time, the
more wasteful they are, and below a certain point, the computer is at an
"idle state" from a consumption POV for all tasks performed that are not
heavy CPU intensive tasks..
In other words, the GUI and overhead for your machine means that unless
you are actually crunching numbers furiously in a process that actually
taxes the machine, the little petty bits of "work" you perform all use
the same amount of energy per unit of machine time.