Mariner East Pipeline Construction Complete In Eastern PA

By Michael Graham, Delaware Valley Journal

February 17, 2022

After years of construction challenges and contentious political debates, the Mariner East 2 pipeline is now completed, Energy Transfer (ET) announced on Wednesday.

“In February 2022, construction of the final phase of the Mariner East project is complete, and commissioning is in progress which will bring our capacity to 350,000 to 375,000 barrels per day,” ET’s Co-Chief Executive Officer Tom Long announced during the company’s fourth-quarter 2021 earnings call.

“Energy Transfer’s Mariner East franchise will now include multiple pipelines across Pennsylvania connecting the prolific Marcellus/Utica Basins in the west to markets throughout the state and the broader region, including Energy Transfer’s Marcus Hook terminal on the East Coast, Long said.

And the pipeline’s been partially operational for months. “For full-year 2021, natural gas liquids (NGL) volumes through the Mariner East system and our Marcus Hook terminal are up nearly 10 percent.”

The Dallas-based company, which operates more than 114,000 miles of pipelines across North America, reported a record amount of products through its network in 2o21, in part thanks to the Mariner East capacity already online.

“Now that the final phase is complete, it brings our capacity to 350,000 to 375,000 barrels per day,” said Long said.

The $2.5 billion, 350-mile project began in 2017, providing hundreds of jobs but also provoking political pushback from opponents of fossil fuels. While the pipeline runs across the entire state, the opposition has been particularly intense in the Delaware Valley.

Rep. Danielle Freil Otten (D-Chester County) launched her political career with a run for the state legislature on her opposition to the project. She tapped into her neighbors’ frustration with the hassles that came with construction. However, her opposition has continued even as the pipeline’s construction has drawn to a close.

As recently as last October, Friel Otten was holding press conferences calling for the shutdown of the entire pipeline project.

Workers in the energy sector, however, have a different view.

“This is the news our members have been waiting for,” said Jim Snell, business manager of the Steamfitters Local 420. “They’ve been laboring for years on this pipeline because they know even greater opportunities are possible at the Marcus Hook Industrial Complex and beyond once everything is up and running. The economic benefits of this project have been irrefutable, but the economic promise is even greater.”

The construction of the Mariner East pipelines is credited with an estimated $9.1 billion in tax revenue and economic impact to the state. It also provided thousands of union jobs.

Kurt Knaus, spokesperson for the Pennsylvania Energy Infrastructure Alliance, says the pipeline’s completion is good news for the region. “Residents and businesses have long awaited the Mariner East project to come to fruition. Now, with its completion, Pennsylvania will soon be able to realize the full potential of this massive investment in energy infrastructure.

“The success of this project will be felt across the state for decades to come, and our communities will continue to benefit economically and environmentally from its sustained operation,” Knaus said.

The Delaware Valley Journal provides unbiased, local reporting for the Philadelphia suburbs of Bucks, Chester, Delaware and Montgomery Counties. For more stories from the Delaware Valley Journal, visit DelawareValleyJournal.com