1. Methods to save energy

2. Turn on the lights and fans when there is no one in the room. 

3. Methods to save energy Build buildings with more curtain glass-walls. 

4. Methods to save energy Order foods more than enough in a restaurant. 

5. Methods to save energy Use energy saving equipment, e.g. use fluorescent lamps instead of filament lamps. 

6. Methods to save energy Keep water boiling for more than five minutes. 

7. Methods to save energy Use public transport like MTR trains instead of driving private cars. 

8. Methods to save energy Switch the TV off when no one is watching. 

9. Methods to save energy Can you suggest more ways to save energy? 