Keep the freezer full
The reason why all the food in the freezer is all frozen to the same degree, regardless of where it has been placed is that of how a freezer was made to run. The internal mechanism ensures that cool air circulates around the entire freezing which results in all the food being frozen. With this in mind, it makes sense that the more space there is in the freezer, the more air needs to be circulated. Considering that freezers run on electricity, more air means more electricity means a larger electricity bill and finally less money left for you to enjoy yourself.
One way to keep the power bill down is to make sure that the freezer is full. This might sound counterproductive. Wouldn’t more food mean that you need more energy to freeze it? Actually no, more food means less space. Less space means that less air is required. The conclusion of all of this being that it is best to keep the freezer full if you want to save on electricity. This doesn’t need to happen all the time, but it should be a general rule.