NGL Energy Partners is devoted to natural gas liquids (NGL) logistics, crude oil logistics, water services, and retail propane. Its crude oil logistics segment (its largest) buys crude oil from producers and transports it for resale at pipeline injection points, storage terminals, barge loading facilities, rail facilities, refineries, and other trade hubs. It also retails, wholesales, and stores propane and other natural gas liquids. Wholesale operations deliver propane to third-party storage and transportation facilities. Retail operations include leasing propane tanks and other equipment and propane delivery. The retail propane segment has a propane storage capacity of 11.9 million gallons.