The electricity consumption of an empty freezer will vary depending on factors such as the freezer's size, energy efficiency rating, insulation quality, ambient temperature, and how often the door is opened. However, an empty freezer typically uses very little electricity compared to a full one.
When a freezer is empty, it has less thermal mass to maintain a cold temperature, meaning there is less to cool down and keep cool. As a result, it won't have to work as hard to maintain its internal temperature, leading to lower electricity consumption.
While it's challenging to give an exact figure without knowing the specific model and energy efficiency rating, most modern freezers are designed to be energy-efficient and have mechanisms in place to minimize electricity usage when they are not fully stocked. The power consumption of an empty freezer might be around 10-20% of its rated capacity, but this can vary.
It's important to note that keeping a freezer empty for an extended period is not the most energy-efficient approach. Over time, the freezer will accumulate frost, and the empty space will require more energy to maintain a cold temperature. For optimal energy efficiency, it's best to keep your freezer well-stocked, as the frozen items act as insulation and help maintain a stable temperature when the door is opened.
If you're concerned about energy consumption, consider investing in an energy-efficient freezer with a good Energy Star rating, and make sure to keep it reasonably full to maximize its efficiency.