Saving electricity by turning off fridge?

Hi, I have a small fridge (about 80cm high, 54cm wide) from the company "privileg".

My fridge is often empty for a period of around 12 to 24 hours (before I cook the next time).

Would I save electricity by turning it off when it is empty, or does the device use up a lot of electricity when booting up (since it isn't cold anymore after it's been off for 12 hours).

Also, how much does the temperature in the kitchen play a role for the price of electricity?