Oftenly called as efficient energy, Energy Efficiency aims to reduce the energy required for proving the products and services. Nowadays, with the so many innovations and advancement in technologies it is becoming essential to make the proper usage of energy which is achieved by energy Efficiency. Energy Efficiency helps to maintain the environment by protecting the air and preventing the change of climate. It also helps by reducing the emission from power plants. With the decrease amount of energy usage less energy will be needed to generate the power plants resulting in the reduction of greenhouse gas emissions and improving the quality of air. Energy efficiency plays an important role in the balancing of the economy. Energy efficiency and renewable energy are said to be the twin pillars of sustainable energy policy and are high priorities in the sustainable energy hierarchy.