The Federal Energy Regulatory Commission Wednesday approved Tres Palacios Gas Storage LLC's plan to place into commercial service Wednesday a third cavern at its facility in Matagorda County, TX (see Daily GPI, Aug. 31).

Tres Palacios, a subsidiary of Westport, CT-based NGS Energy LP, already has received authorization to operate storage caverns one and two, as well as its gas handling facility and header pipeline system (see Daily GPI, July 16, 2009; Oct. 2, 2008). The facility is using existing underground salt caverns in the Markham Dome. With the third cavern it will have a planned working capacity of 36.62 Bcf and the ability to inject up to 1 Bcf/d and withdraw up to 2.5 Bcf/d.

Tres Palacios is interconnected with 10 interstate and intrastate pipelines: Florida Gas Transmission, Transcontinental Gas Pipe Line, Tennessee Gas Pipeline, Natural Gas Pipeline Company of America, Central Texas Gathering System, Houston Pipe Line, Texas Eastern Transmission, Enterprise Texas, Enterprise Texas Intrastate and Kinder Morgan Tejas.

NGS Energy has storage projects in Mississippi, Louisiana and Colorado as well.

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