The transportation sector is now the largest greenhouse gas emitting sector. Moving to cleaner fuel sources can help reduce emissions, and can be a key component of a region’s Climate Action Plan. A dramatic shift has been occurring in the makeup of transit bus fleets, with over 17 percent of the fleet electric/hybrid in 2016. While capital costs remain higher than traditional buses, lifetime costs of battery electric buses have been shown to be lower than other fuel options with additional positive externalities. Transit agencies across the country have been taking bold steps in pursuing alternative fuel transit vehicles, with help from state and federal grant programs.