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Mariner East 2 and Mariner East 2X are part of the Mariner East System that will expand takeaway capacity for the transportation of NGLs from the Marcellus and Utica Shales areas in Western Pennsylvania, West Virginia and Eastern Ohio to destinations in Pennsylvania, including our Marcus Hook Industrial Complex on the Delaware River, where they are processed, stored and distributed to local, domestic and waterborne markets. Mariner East 1 consists of interstate and intrastate propane and ethane service and commenced operations in the fourth quarter of 2014 and the first quarter of 2016, respectively.

Mariner East 2 and 2X will expand the total takeaway capacity to 345 thousand barrels per day upon full completion for interstate and intrastate propane, ethane and butane service. Mariner East 2 entered service in December of 2018. Mariner East 2X is expected to be in service to be in late 2019.

To learn more about Mariner East 2 and 2X, visit, or click on the project site link below: