U.S. production of ethane, a hydrocarbon gas liquid (HGL) produced primarily in natural gas processing plants, has grown rapidly since 2013. Production has nearly doubled from 0.95 million barrels per day (b/d) in the first quarter of 2013 to 1.85 million b/d in the first quarter of 2021. In our Short-Term Energy Outlook, we forecast ethane production to continue to grow in response to a growing U.S. petrochemical industry and rising ethane exports to petrochemical plants around the world, reaching 2.6 million b/d by the fourth quarter of 2022.