All of people are know energy is not limited, so we very need to save it. Firstly you should take off lights and some electrical applainces if you go out or you don't use it. When you don't take off, it will lose a lot energy and you will also lose some money. Secondly, we should ride a bike or walk to the nearplace, it's help you health and relax. But you can use bike or car if you really need and that place is far. Finally, you must drop rubbishs in the bin, not throw trash indiscriminately and you should recycle rubbishs if it can. This is some ideas i know to save energy.