We cannot live without energy. However, we are not exploiting energy properly and energy gradually becomes limited. There are three specific ways to save energy. One of the most prominent measure is to use less electricity. We should save electricity by turning off all the appliances before going out or going to bed. Another way is to use energy saving light bulbs. Our electricity bill will be reduced by using this way. Finally, we should use public transport or walk instead of going by motorbike or car. This way is good for our environment and it is very economical. To sum up, using less electricity, using energy saving light bulbs and using public transport are three main ways to prevent our energy from being limited.