A new compressor station in Dallas County, AL, has been given the green light by federal regulators to begin service, adding 130,000 Dth/d of capacity to the pipeline system of Transcontinental Gas Pipe Line Co. LLC (Transco).

Transco in early May requested approval from the Federal Energy Regulatory Commission to place into service the second phase of its Mid-South Expansion Project, specifically the Alabama compressor project [Docket No. CP11-18-000].

Commissioners in August 2011 had approved the Williams Pipeline Partners LP subsidiary’s request to build and operate the Mid-South project in two phases (see Daily GPI, Sept. 1, 2011). Phase 1 involved 42-inch pipe looping along parts of its system in North Carolina and Alabama, and compressor upgrades in those two states plus Georgia and South Carolina. The expansion originally was designed to service LaGrange, GA, Progress Energy Carolinas and Southern Co.

Overall, the facilities expansions in Phase 1, completed last year, increased Transco’s capacity by 95,000 Dth/d. The Dallas County, AL, compressor adds another 130,000 Dth/d, which would give Transco additional total firm capacity of 225,000 Dth/d, the pipeline said.

According to Transco, the new Alabama station includes two Solar Mars gas turbine compressor units, each rated at 16,000 hp for a total of 32,000 hp, as well as gas cooling equipment.

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