Our lawn mowers can be one of the great contributors of gas emission with the smoke it produces as we mow our lawns. However, today, people are considerate enough to design energy efficient lawn mowers. One of the great examples of energy efficient lawn mower is the Epic EP21H Self-propelled lawn mower, an electric powered lawn mower has the ability to cut on an average-sized yard in one single charge. This pollution-free mower features a push button start with LED battery level indicator and requires zero maintenance for it uses no gas and is a cordless one. Buying this kind of mower even give you the chance to separately solar panels to effectively charge your mower’s battery.