NuStar Energy LP engages in the business of liquid terminals and pipeline operations. It operates through the following segments: Pipeline, Storage and Fuels Marketing. The Pipeline segment provides transportation of refined petroleum products, crude oil and anhydrous ammonia. The Storage segment is engaged in terminal and storage facilities, which includes storage and handling services on a fee basis for petroleum products, specialty chemicals, crude oil and other liquids. The Fuels Marketing segment purchase crude oil and refined petroleum products for resale. NuStar Energy was founded on April 16, 2001 and is headquartered in San Antonio, TX.