Use of energy for transportation remained low in the United States during 2021 compared with pre-pandemic levels and only increased in 12 states. Average U.S. transportation energy use decreased by 5% from 2019 to 2021, according to our State Energy Data System (SEDS). Although transportation energy use did increase in every state in 2021 compared with 2020, transportation in the majority of states still remained below 2019 pre-pandemic levels in 2021.