Precedent agreements are in place to expand the Transco pipeline and provide 225,000 Dth/d of incremental firm natural gas transportation capacity over the next three years for growing markets in the Southeast, Williams Partners LP said Wednesday.

The Mid-South Expansion project would provide service on Transco to the city of LaGrange, GA, Progress Energy Carolinas Inc. and Southern Company Services Inc.

As designed the expansion would be developed in two phases, with 95,000 Dth/d placed into service in the fall of 2012 and 130,000 Dth/d in service the following summer. Capital costs are estimated at $214 million.

"This project will transport clean burning natural gas from Transco's Station 85 pool to new and existing power generation and municipal facilities in the Southeast," said Phil Wright, president of Williams' natural gas pipeline business.

An application to approve construction of the Mid-South project is scheduled to be filed this fall with the Federal Energy Regulatory Commission. Once all approvals are in place, around 23 miles of new pipeline would be built, as well as a new compressor facility in Dallas County, AL, and upgrades to existing compressor facilities in Alabama, Georgia, South Carolina and North Carolina.

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