Do not heat over 20°C. Each °C saves 8% of energy.
Turn of the light in an empty room.
Try to use your car as less as possible.
Use rechargeable batteries instead of normal ones.
Print recto/verso as often as possible.
Prefer seasonnal products.
Choose regional's products.
Switch your monitor off if you are away from your desk for more than ten minutes,
and switch the PC off if you are away for more than an hour.
Do not leave taps dripping, always close them tightly after use.
(One drop wasted per second wastes 10,000 litres per year.)