Williams took the next step with its proposed Mobile Bay South II Expansion project by filing an application with FERC. The project is one of a number of plans that would expand Williams’ Transcontinental Gas Pipe Line (Transco) to serve markets in the southeastern United States.

New service from the Mobile Bay South II Expansion project would be available in the spring of 2011, subject to Federal Energy Regulatory Commission approval, Williams said. The project is designed to add 380,000 Dth/d of southbound, year-round firm transportation capacity on the Mobile Bay Lateral from Transco’s mainline at Station 85 near Butler, AL, to its interconnect with Gulfstream Natural Gas System in Coden, AL (see Daily GPI, June 30).

“Williams is excited to provide this economically priced link between the abundant onshore supplies now available at Station 85 and growing markets in southern Alabama and Florida,” said Phil Wright, president of Williams’ gas pipeline business.

Williams has been focusing on the development of Southeast gas supply infrastructure in order to unclog current bottlenecks. In September FERC approved Transco’s 85 North project — a proposal to expand its pipeline by 308,500 Dth/d (see Daily GPI, Sept. 11). The Mobile Bay South II Expansion and the 85 North project together create more than half a Bcf of takeaway capacity from Station 85 in west-central Alabama to downstream markets.

The Mobile Bay South II Expansion project will require a compression addition of 8,180 hp at Transco Station 85 and facility modifications at Station 83. Williams estimates that the project facilities will cost approximately $36 million. The 85 North project will cost approximately $248 million.

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