Williams Partners said that its Transco pipeline has filed an application with the Federal Energy Regulatory Commission (FERC) to provide an additional 142,000 dekatherms of incremental firm natural gas transportation capacity to serve growing markets in the Mid-Atlantic region of US by November 2012.

The Mid-Atlantic Connector expansion project is designed to provide Virginia Power Services Energy and Baltimore Gas and Electric Company with incremental firm transportation capacity from a Transco interconnection with East Tennessee Natural Gas in Rockingham County, North Carolina to delivery points as far north as Maryland.

The proposed expansion will consist of approximately three miles of new pipeline and upgrades to existing compressor facilities in Virginia. The capital cost of the project is estimated to be $55m.

The Transco pipeline is a 10,000-mile pipeline system which transports natural gas to markets throughout the north-eastern and south-eastern US.
The current system capacity is approximately 8.6 billion cubic feet per day.