Energy conservation is important because it reduces how much energy people use, which draws less electricity from polluting electric plants. It also allows people to save money. Energy conservation is viewed as an important component in the fight against global warming.
Definitions of energy conservation vary, but all of them include avoiding the use of electricity when it is not needed. Many people get in the habit of leaving the lights on when they leave a room; turning them off is a form of energy conservation. Some people fall asleep with the television on, wasting electricity. Using the sleep button, which turns the television off after they have fallen asleep, reduces total energy usage.
Heating and cooling account for a significant amount of the energy people use. Opening the windows to let light in instead of using electrically powered lighting is a form of energy conservation. Similarly, wearing warm clothing and turning the heating down a bit can lead to lower energy use.
Some people view energy efficiency as a form of energy conservation, but this usage is not accepted by all. However, the two concepts are related. Installing better insulation, for example, allows homeowners to run their heating and cooling systems less, which is a form of energy conservation by way of better energy efficiency.