The Mariner East 2 project is the second phase of the company's larger scheme to increase the pipeline transportation capacity between the Marcellus and Utica shale regions. The open season enabled Sunoco to gather enough binding commitments to move forward with the project.
The Mariner East 2 pipeline will expand the current Mariner East pipeline service of natural gas liquids from western Pennsylvania, West Virginia and eastern Ohio areas to Sunoco's Marcus Hook Industrial Complex in Pennsylvania, where the NGLs will be stored and distributed to local and international markets.
The anticipated initial capacity of the pipeline is 275,000 barrels per day of NGLs, and when added to the Mariner East's current capacity, the finished pipeline will have a total capacity of 345,000 barrels per day of NGLs.
Sunoco plans to have Mariner East 2 finished by the end of 2016, so long as the regulatory approval process goes according to plan.