NuStar Energy L.P. is a petroleum company that provides terminalling, storage, and marketing of various products both nationally and internationally. With three business segments - Pipeline, Storage, and Fuels Marketing, the company specializes in the transportation and marketing of petroleum products like crude oil, specialty chemicals, renewable fuels, and liquids. As of December 31, 2021, the company had over 3000 miles of product pipelines across five states, 2000 miles of anhydrous ammonia pipeline, and about 29 terminal and storage facilities of 44.2 million barrels capacity.