Very inefficient compared to heat pumps or even peltiers for that matter.
> store heat in tanks
Oh I already do something similar at home for sub-ambient cooling but I wouldn’t call it cheap.
> If the $ per Wh cost from PV is extremely low
IMO this is roughly equivalent to saying “assume that you could clone dinosaurs, and that you could fill a park with these dinosaurs, and that you could get a ticket to this ‘Jurassic Park,’ and that you could stroll throughout this park without getting eaten, clawed, or otherwise quantum entangled with a macroscopic dinosaur particle”: https://scholar.harvard.edu/files/mickens/files/thisworldofo...