Electricity generation from the moisture in the air would NOT be interesting *
EXCEPT
if it uses condensation - evaporation to do so:
Skip condensation with a tank of water and you have water evaporation..!
That's evaporative cooling or swamp cooling!
Plain water on one side should be cheaper and more efficient by the sound of it
One could probably find or make a tiny MPPT to make the power useful.
*I think too little power is generated but I just scanned the research so far..?
Electricity generation from the moisture in the air:
https://pubs.rsc.org/en/content/arti.../ra/d4ra02346c
https://www.mdpi.com/2073-4360/16/2/260
https://pubmed.ncbi.nlm.nih.gov/28135262/