Electric buses can store electricity or be continuously powered by an external source. Types of electric buses include hybrids, fuel cells, and batteries. Of course, hybrid buses do not have a significant impact on reducing greenhouse gases and are only a step towards fully electrifying vehicles. Most power storage buses are battery-powered electric buses, and these types of buses are one of the most popular types of buses today due to advances in the battery industry. In 2018, this type of bus traveled 280 km with just one charge, but many factors such as temperature, road roughness can be effective for the amount of distance traveled.