Plug in as needed-

“If you’re tempted to get a second fridge – for example, to put in the garage or utility room – and use it at Christmas or when you’re catering for a party, make sure you empty it and switch it off the rest of the time.”

https://www.ovoenergy.com/guides/energy-guides/120-ways-to-save-energy.html?fbclid=IwAR1wQh1FPGcj1n_MkLYySqEDAnP8vMEcVQr_RL0sM8HWblsTeXH7j2WWfdw