Energy conservation and efficiency
Energy efficiency involves using technology that requires less energy to perform the same function. For example, a light-emitting diode (LED) light bulb or a compact fluorescent light (CFL) bulb needs less energy than an incandescent light bulb. Energy conservation, on the other hand, is any behavior that results in the use of less energy, such as turning lights off when leaving a room and recycling aluminum cans (aluminum production requires a lot energy). If we want to preserve the Earth’s resources for the future and cut costs, the conservation of energy and energy efficiency both play an important role in sustainability issues.