Don't open your door too often
during cooking times, as you can lose 20% of the accumulated heat.
Cook meals together.
Aim at cooking everything at once (e.g. apple pie and lasagne). Remember that you can cook at a higher temperature at the top of the oven, and at the same time...
Make use of residual heat from your oven
Turn off the oven for the last 10min of cooking time or simply leave the oven door open to heat your room.
Use pots and pans that cover the whole of the size of the cooker ring.
At a certain time of cooking, turn off the rings and use their residual heat to finish cooking.
Use lids on pots and pans while cooking
This will speed up cooking time and save energy.
Boil the water in your kettle
The boiled water will speed up cooking time.
Use the toaster instead of the grill
It uses less energy!
Be careful in your approach to using general kitchen appliances
Make sure to only use at the correct temperature and for the required amount of time.
Use a microwave for smaller amounts
Use the microwave instead of using the oven or stove to heat smaller meals.
Keep your oven clean
This will help reduce cooking time.
Replace door seals
If your oven door seals are worn, slit or broken, your oven can run less efficiently and therefore use more energy.
Consider using a slow cooker or pressure cooker
They can save both energy and time while producing great food. Slow cookers also use energy during off-peak hours.