Duncan Energy Partners L.P. (NYSE: DEP) is a publicly traded energy partnership that provides midstream energy services, including gathering, transportation, marketing and storage of natural gas, in addition to transportation and storage of natural gas liquids (NGLs) and petrochemicals.

DEP’s assets, which are located primarily in the Gulf Coast region of Texas and
Louisiana, include interests in more than 1,000 miles of natural gas transmission pipelines with a transportation capacity of approximately 1 billion cubic feet per day; nearly 600 miles of NGL and petrochemical pipelines featuring access to the world’s largest fractionation complex at Mont Belvieu, Texas; and 33 underground salt dome caverns with about 100 million barrels of NGL storage capacity. DEP owns approximately 66 percent of the equity interest in these assets, with affiliates of Enterprise Products Partners L.P. (NYSE: EPD) owning the remaining 34 percent interest.