Mariner East 2 NGL Pipeline

From Global Energy Monitor
This article is part of the Global Fossil Infrastructure Tracker, a project of Global Energy Monitor.

Mariner East 2 NGL Pipeline is an operating natural gas liquids (NGL) pipeline in Ohio, West Virginia, Pennsylvania, Delaware, and Pennsylvania, USA.[1]


The pipeline runs through Ohio, West Virginia, Pennsylvania, and Delaware, USA.[1]

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Project details

  • Operator: Energy Transfer LP[1]
  • Owner: Energy Transfer LP[1]
  • Parent: Energy Transfer LP
  • Capacity: 275,000 barrels per day[1]
  • Length: 350 miles[1]
  • Diameter: 20 inches[1]
  • Cost: US$3 billion[2]
  • Status: Construction[1]
  • Start year: 2022[1][3]


According to June 2020 data from the U.S. Energy Information Administration (EIA), the pipeline carries propane, butane, and natural gasoline. Permitting issues need to be resolved before the full capacity (275,000 barrels per day) is available, rather than the current 125,000 barrels per day.[1]

Construction began in 2017.[4]

As of November 2020, construction was expected to be complete by the end of the year.[5] However, more than two years later, the project was not complete in early 2022.[3]

As of April 2022, it is complete, and the full capacity of 275,000 barrels per day was now permissible.

Articles and resources


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Petroleum & Other Liquids, Movements, Energy Information Administration, June 4, 2020
  2. Mariner East: A pipeline project plagued by mishaps and delays, State Impact Pennsylvania, accessed Oct. 26, 2020
  3. 3.0 3.1 "Mariner East pipeline is set to be completed in 2022 after years of environmental damage and delays". WHYY. Retrieved 2022-02-08.
  4. "Mariner East pipelines". Wikipedia. Retrieved 2022-02-08.
  5. Janet McGurty, Energy Transfer's Mariner 1 pipeline to carry Midwest refined products to USAC S&P Global, November 25, 2020.

External resources

External articles