Sunoco Logistics says it plans to invest $2.5 billion in a planned natural gas pipeline across southern Pennsylvania.
The company said Thursday the Mariner East 2 pipeline would provide four times the capacity to move gas from Marcellus Shale drilling sites in western Pennsylvania to its Marcus Hook storage and distribution facility near Philadelphia.
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Sunoco says the project involves building 350 miles of new pipeline near its existing Mariner East 1 pipeline.
It'll carry propane, butane, ethane and other gases.
The company says Mariner East 2 will have a daily capacity of 275,000 barrels compared with Mariner East 1's 70,000 barrels. That pipeline will start moving propane at year's end.
Sunoco says Mariner East 2 could be operational by the end of 2016, pending regulatory and permit approvals.