In most kitchens energy and therefore cost can be saved by thinking about how equipment is used and by keeping it in good repair.
Make sure the kitchen team knows how long it takes for a piece of equipment to heat up- less than 10 minutes for many hobs and grills and 15- 20 minutes for heavier equipment- discourage using equipment to heat the room!
Turn equipment off when not in use
Use pans that have the proper base size for hobs
Keep lids on pans
Ensure tha simmer controls are used where possible
Minimise hot holding
Locate fridges and freezers in a cooler part of the kitchen, away form the hot cooking equipment
Make sure fridges have plenty of ventilation and don't block ventilation panels
Do not overload fridges and freezers
Do not store boxes in fridges- the cardboard doesn't need chilling and they will block airflow
Always shut doors to chilling equipment immediately after use
Clean filters on extraction regularly
Have all equipment serviced regularly
11% of fridge efficiency can be lost through poor fridge seals
20% of oven heat can be lost through poor door seal
50% more energy used by heating elements covered in limescale
25% more energy used by freezers that are iced up or have blocked condensors