Energy Transfer Equity L.P. is a publicly traded partnership that owns the general partner of Energy Transfer Partners L.P. and approximately 52.5M Energy Transfer Partners limited-partner units. It also owns the general partner of Regency Energy Partners L.P. and approximately 26.3M Regency limited-partner units and is the parent of Southern Union Company. In total, the Energy Transfer Equity family of companies owns approximately 45,000 miles of natural gas and natural gas liquids pipelines.