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Transco submits expansion of Pa. gas pipeline facilities to early review at FERC

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Transco submits expansion of Pa. gas pipeline facilities to early review at FERC

Williams Cos. Inc. followed through on promises to expand the Transcontinental Gas Pipe Line Co. LLC system, giving staff at the Federal Energy Regulatory Commission a first look at a proposal that would build on a recent expansion and allow the pipeline to provide more than 582 MMcf/d of extra firm natural gas transportation on two project paths from the Marcellus and Utica shales to markets in the U.S. Northeast and mid-Atlantic.

Transco said it plans to give FERC a formal application for a Natural Gas Act certificate in June 2019 and put the Leidy South project into service by Dec. 1, 2021.

According to Transco's Nov. 5 request for prefiling review, the Leidy South project would overlap much of the Pennsylvania portion of the 1.7-Bcf/d Atlantic Sunrise expansion, which the company put in service in the first week of October. Leidy South would beef up the new Atlantic Sunrise greenfield pipeline with new compressor stations and upgrades at stations on new and existing lines.

Williams President and CEO Alan Armstrong said on a Nov. 1 earnings call that the company decided to move forward with the Leidy South project after reaching 15-year gas transportation agreements with anchor shippers. He also said the company would announce another Transco project before the end of 2018.

Transco told FERC that shippers have signed binding precedent agreements that claim the full amount of the project's capacity. The anchor shippers are Cabot Oil & Gas Corp. for 252.4 MMcf/d of incremental firm gas transportation capacity on one path and Seneca Resources Corp. for 330 MMcf/d on the other.

The project would include expansion of the Transco system in Pennsylvania with two new compressor stations, new compressor units at existing stations and short sections of pipeline loop. The project would also include an extension of the system through a capacity lease with National Fuel Gas Supply Corp.

Transco said 252.4 MMcf/d of firm transportation capacity would be created from an interconnection on Central Penn Line North in Susquehanna County, Pa., to an interconnection of Transco's Central Penn Line South and its mainline in Lancaster County, Pa. With the help of the lease with National Fuel, the company would add 330 MMcf/d of firm capacity from a National Fuel receipt point in McKean County, Pa., to the interconnection of Central Penn Line South and the mainline. (FERC docket PF19-1)

The Central Penn Line North and Central Penn Line South are the new sections of pipeline added to the Transco system along with compression facilities as part of the Atlantic Sunrise expansion.

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