Holly Energy Partners, L.P. provides petroleum product and crude oil transportation, terminalling, storage, and throughput services to the petroleum industry in the United States.

It operates through two segments, Pipelines and Terminals, and Refinery Processing Unit.

The company operates refined product pipelines that transport conventional gasolines, reformulated gasolines, and low-octane gasolines for oxygenate blending, as well as sulfur diesel and jet fuels, and liquefied petroleum gases; intermediate product pipelines that transport intermediate feedstocks and crude oils; and oil trunk, gathering, and connection pipelines that delivers crude oil.

It operates 26 main pipelines; crude gathering networks; 10 refined product terminals; 1 crude terminal; 1 lube terminal; 31,800 track feet of rail storage; 7 locations with truck and/or rail racks; and tankages at 6 refining facility locations, as well as five refinery processing units.

The company was incorporated in 2004 and is based in Dallas, Texas.