Cardinal Pipeline is a 105-mile 24-inch diameter pipeline that extends from Rockingham County, North Carolina, to a point southeast of Raleigh, North Carolina, with a design capacity of approximately 279,000 dekatherms per day.

The $39m Cardinal system expansion project is scheduled to be placed into service in July 2012. The expansion has been designed to serve growth on Piedmont’s and PSNC Energy’s distribution systems, including an expansion on Piedmont’s system to serve Progress Energy Carolinas’ planned new gas-fired power generation facility in Wayne County, North Carolina.

The pipeline is a North Carolina limited liability company whose members are wholly owned subsidiaries of Williams Partners, PSNC Energy and Piedmont.