Dàn ý : Nowadays, energy is necessary for our life. There are many kind of energy : ocean energy, electric energy, solar energy, wind energy... But energy also limit , so we must save energy. We can make some following ways.
To save petrol energy, we should:
+ Limit travel by car, motorbike, train...
You can using bicycles or walk.This not only help you save energy but also avoid traffic jams and can save your money any more.
- To save electricity energy, we should:
+ Turn off the light , the fans, the air-conditioner, you should close it after using.Avoid ironning close at peak hours...
+ When buying somethings, we should choose devices with costly a low electricity.
There are many ways to save water:
+ Turn off the faucet after using it
+ Don't let children play with water, if you let chidren play with water , this ill a lot of water.

- In the kitchen we should save gas energy by many ways:
+ turn off gas after cooking
+ don't use gas too much
+ when the food ripe, we should turn off gas immidiately to save gas.
- saving energy is our duty.
If you follow ways above, you can not only save energy but also save money very much and protect the environment.

Bài viết :)

As you know, energy is very important for our lives. We need energy to live and to work. If there isn't energy, our lives will be very difficult. However, the natural resources are being used up. So we should know how to save energy in the three following ways: First: how to save water. Second: how to save electricity. Third: how to save petrol or gas. As for me, we should save water by taking a shower instead of a bath; using less hydro. We should save electricity by turning off the lights, TV, air conditioner,...before leaving the room; using low energy light bulbs. To save petrol or gas, we should use public transport for short trips; try walking or cycling instead of using cars or motorbikes; using less gas when cooking. To sum up, we should save energy because to save is also to money as to as natural resources.

Xin hay nhất nhé :bro :))

Today, wasting energy and electricity is very common. Most of people who waste energy are kids because they don't know what they're doing. To reduce this we must save energy and electricity in some following ways:

Firstly, everyone knows, it's turning off lights, air-conditioner, fans, TVs...when we don't use them. Secondly, parents must teach their children how to save electricity and energy. Thirdly, we should use electricity more efficiently and reduce our electricity bills. The next tip is reducing the use of fossil fuels like gas, coal, and oil. It is not only saving energy but also protect our environment.

 All in all, because our energy is limited we need to reserve it for the future generations.