Joseph Meehan writes:

Once frozen it does not cost any measurable amounts to keep it frozen.

Nope. You don't understand the thermodynamics of sublimation and the heat
of fusuion and vaporization, and the practicalities of modern appliances.

You pay energy first to sublimate ice to vapor if they're loose in the
freezer. This is why they shrink over time, and why frozen food dessicates
if not in a vapor barrier.

You pay again to condense and fuse that vapor into frost on the
refrigerator's evaporator.

You pay *again* for the heater which melts that frost off during the
defrost cycle into a drain pan in the bottom of the fridge.

You pay again for a blower and heat to evaporate that drained, melted frost
out into the room air from below the fridge.

You pay again to condense that room vapor with your air conditioner.

So it's made quite a few thermodynamic trips ALL AT YOUR EXPENSE.