Keep the following tips in mind, to possibly reduce your overall kitchen consumption.
Be efficient with refrigeration:
Keep your fridge and freezer at their ideal temperature. For your fridge this is between 2°C and 3°C and your freezer should be at -18°C.
Unplug your second fridge:
Unplug that second fridge or freezer that only has a couple of items in it, and find room in your current one to cut your consumption in half.
Use the microwave:
A microwave takes 15 minutes to do the same job as 1 hour in an oven. Use a microwave instead of your oven, to reheat leftovers or to speed up your overall cook time by defrosting meat and or vegetables.