FERC has approved an application of Tres Palacios Gas Storage LLC, a unit of Inergy LP, to build an extension of its header system to a processing plant in south-central Texas.

The Westport, CT-based company proposes to construct a 19.7-mile extension of its existing storage facility pipeline header system located in Matagorda and Wharton counties, TX, to accommodate the expansion plans of Houston-based Copano Energy LLC and to provide its customers with access to processing capability.

Copano plans to expand the capacity of its processing plant in Colorado County, TX, by 400 MMcf/d by early 2013, according to the order issued by the Federal Energy Regulatory Commission.

“This header extension will offer prospective customers processing gas at the Copano plant access to storage services at the Tres Palacios storage facility as well as access to interconnecting pipelines on Tres Palacios’ system,” it said. The Tres Palacios storage facility interconnects with 10 interstate and intrastate pipelines.

The storage facility has total capacity of 57.26 Bcf, of which 38.40 Bcf is working gas. It has a peak withdrawal rate of 2,500 MMcf/d, a maximum injection rate of 1,000 MMcf/d and is capable of cycling seven times a year.

The Commission reaffirmed the company’s request for authorization to charge market-based rates for Tres Palacios’ storage, hub and wheeling services. Tres Palacios is a midstream gas company, with operations in Texas, Oklahoma and Wyoming.

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