I'm skeptical about the energy claims. How much of a difference is the continuous cooling of a can of beverage going to cost when you still have to keep the refrigerator running anyway?
Plus energy grids prefer a gradual and predictable energy draw than a sudden spike. Otherwise we end up with scenarios like this:
I think the idea is that there is no more need to keep all the beverages cooled the whole time. The bottles can be stored at room temperature and the customers only cool those bottles down they buying.
So the energy savings are not in the individual cooling process.
Plus energy grids prefer a gradual and predictable energy draw than a sudden spike. Otherwise we end up with scenarios like this:
https://www.youtube.com/watch?v=slDAvewWfrA